Invention Grant
- Patent Title: Method of dewatering a wet process phosphoric acid slurry
- Patent Title (中): 湿法磷酸浆液脱水方法
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Application No.: US743922Application Date: 1991-08-12
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Publication No.: US5185135APublication Date: 1993-02-09
- Inventor: Krishnan J. Pillai , Lawrence J. Connelly , William K. Gustafson
- Applicant: Krishnan J. Pillai , Lawrence J. Connelly , William K. Gustafson
- Applicant Address: IL Naperville
- Assignee: Nalco Chemical Company
- Current Assignee: Nalco Chemical Company
- Current Assignee Address: IL Naperville
- Main IPC: B01D37/02
- IPC: B01D37/02 ; C01B25/223
Abstract:
A digested slurry from a wet process phosphoric acid production process is dewatered by gravity-assisted vacuum filtration using as a filtration aid an aqueous solution of a polymeric filtraton aid that has been subjected to high shear mixing to enhance the performance of the filtration aid and enhance the filtration.
Public/Granted literature
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