The Shandong Fuji slow-release compound fertilizer project has been completed and put into operation

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The chemical plant for the production of 300,000 tons per year of tower-type melt-granulated slow-release compound fertilizers, built in Linshu, Shandong, by Shandong Fuji Fertilizer Co., Ltd. at an investment of 76 million yuan, was officially completed and put into operation after more than 5 months of hard work. Thus, the company’s annual production capacity for various types of fertilizers has reached 1 million tons, with annual sales revenue set to exceed 2 billion yuan. 　　The civil structure of this device is of steel-concrete type, with surface anti-corrosion treatment. A relatively advanced mechanized elevator system is used for feeding materials; steam is used at the top of the tower to melt urea, and the materials are mixed there. An efficient anti-clogging dual-axis differential screw granulation unit with independent intellectual property rights was developed specifically for this purpose. The entire production process is controlled via DCS automation. 　　This project uses thermally dissolved urine as a carrier, and granulation is achieved through natural cooling due to gravity descent in a tower. The entire production process does not require coal, and no moisture is introduced; it generates neither dust nor wastewater. This not only saves energy but also reduces air pollution caused by SO2 gases. Therefore, the production of this project generates no emissions of ‘three wastes’ pollutants, making it a clean production process. 　　The tower-type melt granulation slow-release compound fertilizer has a uniform distribution of nutrients, a high nitrogen content, low moisture levels in its particles, high strength, smooth and round shapes, and it does not tend to clog. It also features pinholes (shrinkage cavities), which facilitate nutrient absorption by crops. As a result, it possesses strong market competitiveness as well as significant economic and social benefits.