Production of high concentration nitro compound fertilizer by high tower melt rotary granulation. In this technology, urea-phosphorus-potassium melt is sprayed from the top of the granulating tower, cooled and agglomerated into particles during the descending process in the tower. This is also called melt granulation. In ammonium nitrate production enterprises, using high-tower melting granulation method to produce compound fertilizer has the following advantages:
First of all, the concentrated ammonium nitrate solution can be directly utilized, which saves the spraying granulation process and crushing operation of the concentrated ammonium nitrate solution when preparing compound fertilizer with solid ammonium nitrate, simplifies the production process and ensures the production safety.
Secondly, the melting rotary granulation process makes full use of the heat energy of concentrated ammonium nitrate solution, and the water content of the material is very low, so there is no need for drying process, which greatly saves energy consumption.
Thirdly, compound fertilizer with high nitrogen and concentration can be produced, with smooth and round particle surface, high qualified rate, difficult caking and easy dissolution, which ensures that the product has a strong competitive advantage in quality and cost from the production technology.
Rotary drum granulation is also called rotary drum granulation, which is the most widely used equipment in compound fertilizer production. The formula is relatively limited. Partial spraying and partial ammoniation can also be used through pipelines. There are the most types of equipment, 20,000-30,000 can be used as a production line, the daily output can reach more than 280-400 tons, and the good formula can reach more than 500 tons.
Drum granulation technology is favored by many compound fertilizer manufacturers because of its advantages of relatively small formula restriction, high output, low investment and short construction period, and is adopted by more and more compound fertilizer manufacturers.
Extended data:
Soil testing formula is a commonly used method for determining soil nutrients in compound fertilizer production. Soil testing and formula fertilization are based on soil testing formula and fertilizer field test. According to the law of crop fertilizer demand, soil fertility and fertilizer effect, on the basis of rational application of organic fertilizer, the application amount, application period and application method of nitrogen, phosphorus, potassium and medium and trace elements were put forward.
Generally speaking, it is the scientific application of formula fertilizer under the guidance of agricultural science and technology personnel. The core of soil testing and formula fertilization technology is to adjust and solve the contradiction between crop fertilizer demand and soil fertilizer supply. At the same time, it is necessary to supplement the nutritional elements needed by crops in a targeted manner, and make up whatever elements the crops lack, so as to achieve a balanced supply of various nutrients and meet the needs of crops;
Achieve the purpose of improving fertilizer utilization rate, reducing dosage, increasing crop yield, improving the quality of agricultural products, saving labor, reducing costs and increasing income.
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