Title: New method for producing feed additive MDCP using medium concentration wet method phosphoric acid
Application Number: 02133678 Application Date: 2002.08.29
Publication Number: 1478721 Publication Date: 2004.03.03
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01B25/222,C01B25/237,C01B25/32
Applicant(s) Name: Sichuan Weiyuan Shiniu Chemical Industry (Group) C Address: 642464
Inventor(s) Name: Yu Xiangxin, Liu Shunzhi
Attorney & Agent: liu shiquan
Abstract:
     A process for preparing the feed additive MDCP from the middle-concentration wet phosphoric acid includes such steps as using phosphorus ore slurry and sulfuric acid to extract coarse phosphoric acid, using the defluorinating agent, impurity removing agent and flocculant to purifying phosphoric acid by constant-pressure air floating and stripping, mixing with filtered cake of calcium hydrogen phosphate, and drying. Its advantages are high utilization rate of phosphorus, low cost and short period of production.
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