料浆法磷铵生产工艺发展与五大磷肥工程改造

Development of ASCP for Ammonium Phosphate Technology and Five Projects of Phosphate Fertilizer in China

针对引进磷酸浓缩工艺生产磷铵的技术不适应我国矿产资源具体情况的难题 ,开发了料浆法磷铵生产工艺技术 ,已在 2 1个省区布点推广建设了 87套装置 ,形成生产能力 2 79× 10 4t/a的规模 ,占全国磷铵生产能力的 6 0 %。最近在贵州瓮福实施料浆法磷铵与引进的传统磷酸浓缩工艺联产的成功 ,为五大磷肥工程的改造提供了一条新的途径。

The production of ammonium phosphate by “ammoniated slurry concentrating process'(ASCP) developed by Sichuan University etc. has solved the difficulty that China's low grade phosphorus ore is not suitable for the imported “phosphoric acid concentrating process'(PACP). 87 plants employing ASCP have been built with a total capacity of 2.79×10 6 t/a,which is 60% of the total ammonium phosphate production in China. Recently, a technique for ammonium phosphate production combining both ASCP and the imported PACP has been developed and put into operation in Wengfu of Guizhou Province. The new process with independent property right has been adopted in the five updating projects of phosphate fertilizer in China.