江苏省东海蛇纹石矿磷复肥装置开车一年多来 ,由于磷酸萃取系统反应热量不能有效移除 ,造成系统反应温度高而不能连续运行 ,磷石膏洗涤率仅在 84 %左右。磷铵装置也受其影响而开开停停 ,造成亏损。经考察 ,磷酸料浆低位真空冷却成套专利装置在川、滇、鲁的 5套湿法磷酸萃取系统 Phosphate compound fertilizer plant in East China Sea, Jiangsu Province, driving more than a year, due to the phosphoric acid extraction system can not effectively remove the heat reaction, resulting in the system reaction temperature is high and can not be continuous operation, phosphogypsum washing rate of only about 84%. Ammonium phosphate plant also affected its opening and closing stop, resulting in losses. After investigation, the phosphate slurry low vacuum cooling complete sets of patented device in Sichuan, Yunnan, Lu 5 sets of WPA extraction system