Granular potash fertilizer steps into the fast lane of development.

Although the potash market has been depressed for a period of time, the business opportunities for granular potash have been emerging. According to Zhang Weixing, deputy director of Shanghai Institute of Chemical Industry Co., Ltd., with the acceleration of land circulation speed, the continuous increase of planting area and the continuous improvement of mechanization level of planting fertilizer, the demand for granular potash fertilizer has become a development trend, and the domestic market and export market space are becoming larger and larger.

Powdered potash fertilizer will be blown away by wind or washed away from soil by rain when applied directly in agriculture, and the fertilizer will be released quickly, resulting in great waste. At present, there are certain breakthroughs in the production technology of domestic enterprises: irregular granulation technology and round granule granulation technology, as major technologies in the industry, have achieved major breakthroughs, related potash granulation auxiliary continuous granulation processes have been localized, granulation equipment and granulator enterprises continue to increase. According to statistics, in 2016, there were 66 granular potash production enterprises in China, with a total production capacity of 5.58 million tons/year and a total output of 2.82 million tons/year. Granular potash fertilizer has a history of more than 20 years in China, especially in recent years due to the acceleration of land circulation speed, large-scale planting area will be more and more, the international production cost of grain and agricultural products is forced, the high level of agricultural fertilizer mechanization requirements, the diversification of granulation functions and other multiple factors, granular potash fertilizer industry has become an important development direction.

Industry experts also pointed out that China BB fertilizer industry to truly achieve bigger and stronger, we must get out of the misunderstanding of simple mixing, and effectively solve the three major problems of granular potassium fertilizer and BB fertilizer combination: the first is to adopt the control separation and fertilizer efficiency adjustment mode. Three different elements of nitrogen, phosphorus and potassium are coated with three different coating solutions respectively, so as to achieve multiple effects of "controlling nitrogen slow release, promoting phosphorus synergy and preventing potassium leaching". The second is the combination of blending mode and integrated platform. Set up a new diversified fertilizer relay group to form new product types. This open structure can better adapt to the flexible and diverse requirements of soil testing and formula fertilization for fertilizer nutrients. Third, uniform grain size and mechanical fertilization combined. Segregation is a major problem in the production of blended fertilizers. At present, extrusion is the main method in the production of blended fertilizers in China, and the grain shape is not regular enough. The blended fertilizers matched with spherical large granular urea and ammonium phosphate are easy to segregate, which is not only not suitable for mechanized fertilization, but also affects the fertilizer efficiency of BB fertilizer. As a result, some farmers use the same BB fertilizer with good effect, while some farmers use the same BB fertilizer with poor effect. The reason is that the formula segregates, resulting in uneven fertilizer efficiency.