Kunming University of Science and Technology

Peng Chen

Ping Ning

Senlin Tian

Yingjie Zhang

Xueqian Wang

Langlang Wang

Yixing Ma

Rui Cao

A method for production of ammonium phosphate from phosphate rock slurry. The method includes: introducing flue gas containing SOinto a phosphate rock slurry, to yield an absorption solution; evaporating waste ammonia water containing 10-20 wt. % ammonia to yield ammonia gas; introducing the ammonia gas into the absorption solution at a temperature of 110-135&#xb0; C. until a neutralization degree of the absorption solution reaches 1.5-1.6, thus yielding an ammonium phosphate solution and calcium sulfate; separating the calcium sulfate from the ammonium phosphate solution; and introducing the ammonium phosphate solution to a granulator for granulation to yield ammonium phosphate granules; drying and sieving the ammonium phosphate granules, thereby yielding ammonium phosphate.

Method for production of ammonium phosphate from phosphate rock slurry

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Kunming, China

Peng Chen