50,000 tons of calcium sulfate whiskers and 30,000 tons of ammonium phosphate, magnesium chloride and magnesium by-products were put into operation in the first half of the year
June 05, 2018
Weifang Xinchang Chemical Co., Ltd. has revealed that the company will invest 120 million yuan to build an annual output of 50,000 tons of calcium sulfate whiskers and by-product 30,000 tons of ammonium phosphate magnesium and magnesium projects will be completed and put into operation in the first half of this year. The project is a green environmental protection project that directly utilizes middle-low grade phosphate rock to produce calcium sulfate whiskers and by-product ammonium phosphate chloride and magnesium. It will solve the utilization of low-grade phosphate rock (with phosphorus content below 20%) and the solid waste of phosphogypsum. Big problem.
According to Weiling Wang, chairman and general manager of Nassen Chemical , China is a country with few ore deposits and low-grade ore deposits, with an average grade of about 17%. The process is a green chemical process that is economical, environmentally friendly and capable of efficiently utilizing the acidolysis of phosphate rock. It is a major breakthrough in the field of phosphorus chemistry. The technology uses phosphoric acid to decompose phosphate rock to produce water-soluble calcium and phosphoric acid, and reacts with water-soluble calcium and sulfuric acid in an acid hydrolysis solution and precipitates, purifies and cultivates calcium sulfate whiskers, and then it is classified into various industries for drying and calcination. raw material. Finally, the decalcified feed solution is neutralized with ammonia, and then concentrated, pressure filtered, and flash dried by spray drying to produce ammonium phosphate and magnesium chloride.
It is reported that after an annual output of 50,000 tons of calcium sulfate whiskers is completed and put into production, the company plans to carry out Phase II and Phase III projects, striving to form an annual production capacity of 500,000 tons of calcium sulfate whiskers and 400,000 tons of ammonium phosphate magnesium and magnesium. , can achieve industrial output value 3 billion yuan.
