Zhengzhou Gofine Machine Equipment CO., LTD Company News

The flowerpot nutrient soil production line is one of the important equipment in modern agricultural production, which is used to produce high-quality nutrient soil required for the cultivation of various plants. The potted nutrient soil production line usually includes raw material processing, ingredient mixing, granulation, drying, packaging and other links. The production process can be adjusted according to different plant species and growth requirements.     Potting soil and Potting mix Potting soil: Potting soil usually contains organic matter, inorganic matter and an appropriate amount of fertilizer. Potting soil focuses more on providing the nutrients and support needed for plant growth, while having appropriate water retention and drainage. It is especially suitable for plants that have high soil requirements and long growth cycles, such as flowers, vegetables, etc. Potting mix: The mixture usually mixes different types of materials, such as perlite, vermiculite, humus, peat, etc., to achieve the purpose of providing the air permeability, drainage and nutrients needed for plant growth. It is suitable for plants such as succulents and cacti, and can help plant roots get good ventilation and drainage.       Potting Soil Production Line Process 1. Raw material preparation: such as peat, humus, perlite, horticultural sand, etc. are stored in the corresponding warehouse. 2. Weighing and proportioning: The raw materials are weighed and mixed by automatic or semi-automatic systems according to the formula requirements to ensure the uniformity of the mixture. 3. Mixing process: The raw materials are mixed in a blender or mixer to ensure that the various raw materials are evenly mixed. During the mixing process, the humidity, pH value, etc. of the potting soil need to be controlled to ensure the nutrient content of the final product. 4. Screening and packaging: The mixed potting soil is screened to remove large particles and impurities, and then automatically or semi-automatically bagged. 5. Conveying system: The bagged potting soil is sent to the packaging area through a conveyor belt or other conveying system. 6. Packaging: The automated or semi-automatic packaging system puts the potting soil into bags, seals them and prints labels. 7. Finished product storage: The packaged potting soil bags are stacked in the finished product warehouse, ready for sale or distribution. Through the above production line process, potting soil can be mass-produced, production efficiency and product quality can be improved, and products can be guaranteed to meet standards. The automation equipment and quality control system on the production line can improve production efficiency and product consistency.  

Composter is an ideal and efficient organic production equipment, which is of great significance in environmental protection and sustainable agricultural development. However, there are many factors that have a significant impact on the production of organic fertilizer during the composting process.     Main Factors Affecting Composting 1. Temperature: Suitable temperature is crucial for the smooth progress of composting. Changes in temperature will directly affect the activity and metabolic rate of microorganisms, and thus affect the speed and quality of composting. Higher temperatures help to speed up the decomposition of organic matter, but too high or too low temperatures may lead to poor composting results. 2. Moisture content: Moisture plays a key role in composting, providing a suitable living environment for microorganisms. Too little moisture will inhibit the activity of microorganisms; too much moisture will affect the aeration of the compost, resulting in insufficient oxygen, which is not conducive to the growth and metabolism of aerobic microorganisms. 3. Carbon-nitrogen ratio: The reasonable ratio of carbon-nitrogen ratio in the raw materials is crucial to the composting effect. Too high a carbon-nitrogen ratio leads to nitrogen loss during composting, while too low a carbon-nitrogen ratio will affect the growth of microorganisms and the decomposition rate of organic matter. 4. Ventilation: Adequate oxygen supply is the basis for the normal metabolism of microorganisms during aerobic composting. Good ventilation can promote the entry of oxygen and the discharge of gases such as carbon dioxide, ensuring efficient composting.       Harms of unfermented poultry and livestock manure · Infection by pests and diseases · Burning of seedlings · Hazards of toxic gases · Oxygen-poor soil · Slow fertilizer effect · Environmental pollution · Inconvenient transportation     How to choose the right composting equipment High-quality composting equipment can provide suitable environmental conditions, such as precise control of temperature, moisture and ventilation, to ensure that composting is carried out in the best condition. Advanced composting equipment can also improve composting efficiency and reduce manual operation and resource waste.     Hot-selling composting equipment · Intelligent temperature-controlled fermentation tank · Large-span wheel-type compost turner · Driveable diesel compost turner machine · Multitrack fermentation chain compost turner · Hydraulic lift compost turner · Tractor-drawn compost turner     In actual composting operations, comprehensive analysis and scientific management are required according to specific circumstances to ensure the smooth progress of composting work and achieve good results. At the same time, we will continue to develop and improve composting equipment, promote the development of composting technology, and bring greater progress and development opportunities to the composting industry.

Cat litter is a must-have item for every cat family, and bentonite cat litter is very popular in the market. Bentonite cat litter has many advantages, such as strong water absorption, odorlessness, easy of cleaning, etc., so the production of bentonite cat litter particles is a topic that has attracted much attention.   Advantages of Bentonite Cat Litter Benchtonite cat litter is made of natural bentonite, so it has good water absorption properties. This allows bentonite cat litter to quickly absorb urine and form lumps for easy cleaning. In addition, bentonite itself is odorless and more friendly to cats' health. Overall, bentonite cat litter is a high-performance, environmentally friendly and easy-to-use choice. Bentonite cat litter particles are usually spherical in shape with a diameter of about 2-5 mm. This form is conducive to improving the water absorption performance of cat litter and avoiding the difficulty of forming lumps due to the large sand particles. In addition to spherical cat litter, columnar tofu cat litter is also a common type of cat litter. Of course, whether it is spherical or cylindrical, the choice of particle shape depends on the difficulty of scooping and the ability of cat litter to effectively agglomerate.     Production process of bentonite cat litter granules The production process of bentonite cat litter granules generally includes steps such as raw material preparation, uniform mixing, granulation molding, and drying. First, the required bentonite raw materials are screened, cleaned, and processed to ensure the quality of the raw materials. Then the prepared raw materials are evenly mixed with other additives to ensure the stability of the quality of the final product. Next, the mixed raw materials are pressed into spherical/or cylindrical cat litter granules through a granulator. Finally, the granules are dried to reach the ideal moisture content and can be packaged and sold.     Production Equipment A series of equipment is required to produce bentonite cat litter particles, mainly including mixers, granulators, dryers, etc. The mixer is used to fully mix the raw materials to ensure the uniformity of the particles; the granulator is used to press the mixed raw materials into particles; and the dryer is used to remove moisture from the particles to ensure the quality of the product. In order to ensure the quality of the particles, a screening process is usually added to remove dust from the finished cat litter particles to create a more comfortable environment for pets. With the help of packaging machines, palletizers and other related equipment, an automated cat litter production line can be realized. Reduce labor costs and improve production efficiency.     The process of producing bentonite cat litter particles is not complicated, but each step needs to be strictly controlled to ensure the quality and performance of the final product. With the right equipment and process, it is not difficult to produce high-quality bentonite cat litter particles.

Livestock farming plays an important role in modern agriculture, but it also brings a lot of manure pollution problems. In order to solve the problem of manure treatment, various livestock and poultry manure treatment equipment came into being. This article will introduce several major manure treatment equipment, including manure dehydrators, industrial filter presses, etc., to improve manure treatment efficiency and reduce environmental pollution.   Manure Dehydrator A manure dehydrator is a device used for livestock manure treatment. Its main function is to separate the water in the manure and reduce the water content in the manure, thereby reducing the weight and volume of the manure, making it easier to process and utilize it. Manure dehydrator can quickly separate the water in the manure through the principle of rotating spiral, and at the same time reduce the ammonia content of the manure, reducing odor and environmental pollution.   Industrial Filter Press Industrial filter press is also widely used in livestock and poultry manure treatment. Its main function is to separate the solid particles in the manure from the liquid wastewater through the principle of pressure filtration, thereby reducing the amount of wastewater discharged and purifying the water quality. Industrial filter presses can efficiently treat a large amount of wastewater and manure, reduce environmental pollution, and at the same time, the filtered solid particles can be reused as fertilizer or biomass energy to achieve comprehensive utilization of resources.   Other Manure Treatment Equipment In addition to manure dehydrators and industrial filter presses, there are some other common manure treatment equipment, such as manure drying equipment, biological fermentation equipment, etc. These equipment can select appropriate technologies and equipment according to different needs and processing scales to achieve efficient treatment and resource utilization of poultry and livestock manure.   By introducing the above-mentioned livestock and poultry manure treatment equipment, the efficiency of manure treatment can be improved, environmental pollution can be reduced, and resource recycling can be achieved. In future development, we need to continuously promote scientific and technological innovation, improve manure treatment technology, achieve sustainable manure treatment and resource utilization, and promote the sustainable development of the livestock and poultry industry.  

In modern agricultural production, nitrogen, phosphorus and potassium compound fertilizers, as important plant nutrients, play a vital role. Through reasonable nitrogen, phosphorus and potassium granulation process, the nutrients in fertilizers can be fully utilized, the yield and quality of crops can be improved, and the development of agricultural production can be promoted.   NPK Production Process Nitrogen, phosphorus and potassium are the three main nutrients required for plant growth, and they have irreplaceable functions in different stages of crop growth. The production process of nitrogen, phosphorus and potassium compound fertilizer mainly includes raw material preparation, uniform mixing, wet granulation, drying and packaging. When making compound fertilizers, it is necessary to reasonably proportion them according to the demand for nitrogen, phosphorus and potassium of different crops to ensure that the content of various elements in the fertilizer meets the growth needs of crops.     NPK Granulation Technology Granulation is the process of processing fertilizer raw materials into granules through a certain process for easy storage, transportation and application. Commonly used NPK compound fertilizer granulation technologies include wet granulation and dry granulation. Wet granulation is to add the mixed fertilizer raw materials into the granulator and granulate them by adding appropriate amount of water or solution to form granular fertilizer. Dry granulation is to form granular fertilizer by pressure or mechanical force under water-free conditions.   NPK Production Line In the production process of nitrogen, phosphorus and potassium compound fertilizers, fertilizer granulators are crucial equipment. Common fertilizer granulators include roller granulators, flat plate granulators and osmotic granulators. These machines can make fertilizer raw materials into regular granular products according to different process requirements. In addition, fertilizer drying equipment, packaging equipment, etc. are also indispensable equipment in the production process, which ensure the quality and stability of fertilizers in the production process.   As one of the important material bases for promoting the development of agricultural production, the manufacturing process of nitrogen, phosphorus and potassium compound fertilizers needs to pay full attention to the selection and quality control of raw materials to ensure the quality and effect of the final product. Through the optimized granulation process, high-quality compound fertilizers can be prepared to provide better support for agricultural production.

With the continuous development of agricultural production, blended fertilizer is a popular type of fertilizer among agricultural producers. In order to improve the production efficiency and quality of blended fertilizer, our company has designed the latest BB fertilizer mixer, which has brought remarkable results to the blended fertilizer production line. Let us take a deeper look at the characteristics, applications, and blended fertilizer production process of the BB fertilizer mixer.   Characteristics and application of BB fertilizer mixer As an important piece of equipment in the blended fertilizer production line, the BB fertilizer mixer has the characteristics of good mixing effect, fast mixing speed, stable operation, and easy operation. It is suitable for the mixing production of various blended fertilizers, which can ensure the uniform distribution of various nutrients in the mixed fertilizers and improve production efficiency. BB fertilizer mixer is widely used in the growth process of crops in farmland, greenhouses, orchards, etc., to help crops grow healthy and strong.     Working Principle BB fertilizer mixer adopts advanced mixing technology to fully mix various raw materials through high-speed rotating mixing blades. Its working principle mainly includes raw material feeding, mixing, unloading and other links. The internal design of the mixer is reasonable, which can quickly mix various raw materials evenly to ensure the quality and stability of the mixed fertilizer.     Blended fertilizer production line and equipment Blended fertilizer production line is generally composed of raw material processing system, weighing system, conveying system, stirring and mixing system, packaging system, etc. The BB fertilizer mixer is one of the core equipment used in the production line. Its high-efficiency stirring capacity can greatly improve the production efficiency of the entire production line. Blended fertilizer equipment adopts advanced automatic control technology, is easy to operate, and has strong adaptability.       Through the latest BB fertilizer mixer, our company is committed to providing agricultural producers with more efficient and stable fertilizer production solutions. We firmly believe that through continuous innovation and optimization, our products can bring more reliable support and help to agricultural production. Customers in need are welcome to contact us to learn more about the information and services of BB fertilizer mixer.    

With the improvement of environmental awareness and the continuous improvement of environmental protection laws and regulations, the construction and operation of sewage sludge treatment plants have gradually become the focus of social attention. In this context, filter presses, as an efficient solid-liquid separation equipment, are gradually becoming one of the preferred equipment for treating sewage sludge.     The filter press machine has the following characteristics: 1. High efficiency and energy saving: The filter press uses the principle of pressure to quickly discharge water from solid materials, achieve fast and efficient solid-liquid separation, and save time and energy. 2. Stable and reliable: The filter press has a simple structure, convenient operation, long service life, stable operation, and can work continuously and efficiently. 3. Wide range of applications: The filter press is suitable for various sewage sludge treatment processes and can treat sewage sludge of different concentrations and properties.   Working processing: The filter press places the sludge containing the solid-liquid mixture in the filter medium through the pressure system inside the equipment and uses the external force to press and squeeze the sludge so that the water in the sewage sludge is quickly squeezed out, the solid particles form a filter cake on the filter medium, and the water is discharged. Finally, the effective separation of solids and liquids is achieved.   Application of filter press in filter press plant: Filter press plays a key role in the filter press plant. As the main force of solid-liquid separation equipment, it is used to treat sewage sludge, industrial wastewater, mining wastewater, food juice, olive oil extraction, and other fields. Through the treatment of filter press, solid particles in sewage can be effectively removed, so that sewage can be purified and meet the discharge standards, while also reducing pollution to the environment.       In summary, filter press plays an important role as an indispensable equipment in sewage sludge treatment plants. Its high efficiency, energy saving, stability, reliability and wide applicability make it widely used in the field of environmental protection, making an important contribution to improving environmental quality and protecting the ecological environment.

A composter is a device specially used for composting organic waste. It promotes the decomposition and maturity of organic matter through stirring, turning, ventilation, etc., and finally produces organic fertilizer with high nutritional value. Composters are widely used in agriculture and gardening and play an important role in improving soil fertility, improving soil structure, and promoting plant growth.     Types of organic fertilizer composting machines Crawler compost turner The crawler compost turner adopts a crawler-type driving structure, which is flexible to move and can adapt to different site conditions to improve work efficiency. It is easy to move, simple to operate, and highly applicable.   Tractor-pulled compost turners Traction compost turner needs to be used with a tractor or other vehicle, and is portable and flexible. It is low-cost and suitable for small-scale farmland.     Groove compost turning machine A trough compost turning machine is usually a fixed structure operating in a fixed compost turning trough suitable for long-term fermentation. Stable and reliable, suitable for continuous operation.     Horizontal fermentation tank A horizontal fermentation tank is a closed fermentation equipment with better fermentation effect and environmental control. It is conducive to controlling the fermentation process and reducing odor and dust emissions.   Film rolling machine The film rolling machine is mainly used to cover and remove films in composting sites to improve the fermentation efficiency of composting. Controlling environmental conditions is conducive to the reproduction and fermentation of microorganisms.     Application of composter Agricultural production: composter can convert organic waste such as crop straw and livestock and poultry manure into organic fertilizer, improve soil fertility and promote crop growth. Landscaping: used to treat garden waste, such as branches and leaves, lawn trimmings, etc., to produce organic fertilizer, improve soil quality and promote plant growth. Urban domestic waste treatment: In cities, composters can also be used to treat organic waste such as kitchen waste, reduce the amount of landfill and realize resource recycling. Environmental protection engineering: composters are also used in environmental protection engineering, such as treating sludge, industrial organic waste, etc., to reduce environmental pollution and realize resource recycling. Rural domestic waste treatment: used to treat rural residents' domestic waste, such as kitchen waste, poultry manure, etc., to produce organic fertilizer and improve farmland fertility.   As an environmentally friendly and efficient organic waste treatment equipment, composter is of great significance in promoting organic fertilizer production, improving soil quality, and reducing environmental pollution. It is one of the indispensable pieces of equipment in modern agriculture and ecological environment construction.

Double roller extrusion granulators and disc granulator are both common fertilizer granulation equipment. They have their own characteristics and applicable scenarios in the granulation process. Next, I will introduce the extrusion granulator and disc granulator to you in detail.     Double Roller Extrusion Granulator Working process: The double roller extrusion granulator presses the raw materials into granules by mechanical extrusion, which is usually suitable for granulating harder raw materials, such as fertilizers, organic fertilizers, etc. Advantages: Suitable for granulating raw materials with higher hardness. The molding properties of the raw materials can be fully utilized during the granulation process to generate uniform and dense granules. Large output, suitable for large-scale production. Disadvantages: High requirements for raw material humidity. Requirements for raw material particle size.   Disc Granulator Working process: The disc granulator granulates the raw materials by rotating the disc, which is suitable for granulating soft raw materials, such as organic fertilizer, biological fertilizer, etc. Advantages: Suitable for granulating soft and sticky raw materials. A certain amount of water can be added during the granulation process, which is conducive to the formation of particles. Disadvantages: The energy consumption is large. Due to the uniqueness of wet granulation, the finished fertilizer particles need to be dried and cooled to enhance the hardness of the fertilizer particles. The granulated particles are not uniform enough, and a screening machine is required to classify the fertilizer particles.   How to choose a suitable fertilizer granulator Raw material characteristics: According to the hardness and viscosity of the raw materials to be granulated, choose a double roller extrusion granulator or a disc granulator. Production requirements: If mass production is required and the raw materials are suitable for extrusion granulation, a double roller extrusion granulator can be selected; if it is a small-scale production or the raw materials are soft organic matter, a disc granulator can be selected. Budget considerations: It is necessary to consider the investment cost and subsequent maintenance costs of the equipment, and select equipment with a higher cost performance while meeting the needs.     In summary, the double roller extrusion granulator and disc granulator each have their own advantages and disadvantages and should be evaluated according to specific circumstances when selecting to meet production needs and improve production efficiency.  

Organic fertilizer plants are usually divided into two types: one is built and produced for the purpose of waste treatment, and the other is built and produced for the purpose of producing and selling organic fertilizer.   Waste Treatment Fertilizer Plant Composting plants for waste treatment are usually farms and agricultural processing enterprises. Waste, as a byproduct of the production and processing process, is converted from biomass waste into organic fertilizer through composting and fermentation. This production line is mainly used to produce powdered organic fertilizer, usually with fertilizer equipment such as compost turners, crushers, mixers, and packaging machines to form a complete set of automated organic fertilizer production lines.   Factories that produce and sell organic fertilizers are more diversified. They have a large demand for raw materials and need to build a larger raw material storage workshop. At the same time, they need higher-quality mechanical equipment and a higher degree of automation to reduce labor costs and scale production.   Production process of powdered organic fertilizer · Raw material processing: mainly composting, the organic waste is piled up in the composting field for fermentation. · Crushing and mixing: the fermented organic waste is crushed and mixed to make its particles finer and more uniform. · Drying: the mixed organic materials need to be dried to control the moisture content and increase the shelf life of the organic fertilizer. · Packaging: the dried organic fertilizer is packaged by a packaging machine for easy transportation and sales.     Granular organic fertilizer production line production process This type of granular fertilizer has a regular shape, is easy to store and transport, and is not easy to fly or clump, making fertilizer application more convenient and accurate, and improving the fertilization effect and the utilization rate of crop nutrients. In order to ensure the quality of granular fertilizer, it is usually necessary to screen and package the output fertilizer granules to provide customers with high-quality organic fertilizer products.   In general, the construction plan of an organic fertilizer plant needs to be reasonably designed according to the production purpose and the source of raw materials. The production process of an organic fertilizer plant is mainly divided into two types: waste treatment and organic fertilizer granule production. Waste treatment organic fertilizer plants mainly use composting and fermentation to convert waste into organic fertilizer; while organic fertilizer granule production lines need to be equipped with granulator, screening machine, dryer, cooler, packaging machine and other equipment to achieve large-scale production and sales of organic fertilizer. Regardless of the type of organic fertilizer plant, it is necessary to pay attention to the comprehensive consideration of the production process, the reasonable configuration of equipment, and the compliance with production efficiency and environmental protection standards, so as to promote the healthy and sustainable development of the organic fertilizer industry.

As an important agricultural machinery and equipment, fertilizer crushers play an important role in the fertilizer processing process. Different types of fertilizer crushers can meet different crushing particle size requirements. In order to speed up fertilizer production efficiency and improve the uniformity of raw material mixing. The materials processed by the fertilizer crusher are conducive to fertilizer granulation and subsequent fertilizer processing technology and improve fertilizer utilization.     Vertical type chain crusher A fertilizer vertical chain crusher is often used for crushing work in organic fertilizer production lines. This vertical crusher adopts chain transmission and is suitable for crushing various types of fertilizers such as organic fertilizers, compound fertilizers, inorganic fertilizers, etc. The number of chains can be increased or decreased as needed. The whole machine has a compact structure, low power consumption, stable operation, and convenient maintenance.     Semi-wet material crusher The semi-wet material crusher is mainly used to process materials with a moisture content between 15% and 30%. It can effectively crush semi-wet raw materials into the required fineness, such as organic fertilizers, animal manure, vegetables and fruits, etc. The processed materials can be composted and fermented to improve the utilization and absorption rate of fertilizers.     Cage crusher Cage crusher is widely used in various industrial fields, such as large-particle ammonium phosphate and materials with high humidity. There are two rotors moving in opposite directions inside, which use high-speed rotary motion to drive the cage bars on the rotor to hit the material to achieve material crushing. This crusher has the advantages of a simple structure, stable operation, low energy consumption, and easy maintenance.     Ton bag agglomerated compound fertilizer crusher The ton bag agglomerated compound fertilizer crusher is a crushing equipment specially designed for handling ton bag agglomerated fertilizer. During long-term storage or transportation, compound fertilizer is prone to agglomeration due to moisture or pressure, which affects the use effect of the fertilizer. In order to solve this problem, the ton bag agglomerated compound fertilizer crusher can be used to crush the packaged agglomerated compound fertilizer to restore it to a granular state, which is convenient for transportation and use.     How to choose a suitable crusher 1. Consider the type of fertilizer: Different types of fertilizers require different types of crushers to process. 2. Production scale: According to the size of the farm and production needs, choose a fertilizer crusher of suitable scale. 3. Crushing effect: Make sure that the crusher you choose can achieve the crushing effect you want. The degree of crushing will directly affect the absorption effect of the fertilizer. 4. Energy consumption and maintenance: Choose a crusher with low energy consumption and easy maintenance, which can save costs in long-term use. 5. Brand and quality: Reliable brand and quality can reduce the cost of subsequent maintenance and replacement.  

Organic fertilizer rounding machine is often used for polishing and shaping irregular and cylindrical fertilizer particles, which can make cylindrical particles roll into spherical particles at one time.   Granules rounding machine is widely used in fertilizer, cement, chemical, and other industries. Its main purpose is to shape and round irregular particles, so that the finished particles have a round and beautiful appearance. This machine has high output and a flexible process. It can be used with one or more granulators at the same time, which effectively solves the problems of complex processes, large equipment investments, and inconsistent quality of finished products produced by multiple equipment caused by one granulator equipped with one rounding machine in the past. The rounding machine is composed of two or more rounding cylinders. The material is discharged from the discharge port after multiple rounding treatments, ensuring that the finished particles have consistent particle size, high density and smooth surface. It has a beautiful appearance, simple structure, reliable performance, and easy operation and maintenance. Just follow the instructions. It has strong anti-overload ability and adapts to various working environments. Low power consumption, low production cost, and significant economic benefits have brought convenience and benefits to various industries.   Functions of organic fertilizer rounding machine 1. Improve the shape of fertilizer particles: Organic fertilizers are often irregular or cylindrical particles, which are not conducive to storage, transportation and application. Through the function of the rounding machine, irregular or cylindrical fertilizer particles can be shaped into regular spherical particles, making them more beautiful and easy to store and transport. 2. Improve the quality of fertilizer: The rounding machine can make the fertilizer particles uniform in size, bright and smooth on the surface, strong in particle strength, high in ball formation rate, and low in return rate, thereby improving the quality and stability of fertilizers and ensuring the effect of plant nutrient absorption. 3. Improve production efficiency: The rounding machine can cooperate with other production equipment to improve production efficiency, reduce production energy consumption, and reduce production costs. At the same time, the rounding machine can quickly and continuously shape fertilizer particles, speed up production speed, and increase output. In summary, the role of the fertilizer rounding machine is mainly to shape fertilizer particles, improve fertilizer quality, increase production efficiency, and make organic fertilizer production more efficient, stable and economical.     Features of organic fertilizer rounding machine The organic fertilizer rounding machine can be used in conjunction with one or more granulators. The processed organic fertilizer particles are uniform in size, bright and smooth on the surface, strong in particle strength, high in balling rate, and low in return rate. The fertilizer shaping machine also has the characteristics of beautiful appearance, economical and practical, low energy consumption, and low cost.     Application of fertilizer rounding machine in fertilizer production line