Invention Application
WO1989010200A1 PYRITE DEPRESSANTS USEFUL IN THE SEPARATION OF PYRITE FROM COAL
审中-公开
黄铁矿抑制剂在煤中分离硫铁矿中的应用
- Patent Title: PYRITE DEPRESSANTS USEFUL IN THE SEPARATION OF PYRITE FROM COAL
- Patent Title (中): 黄铁矿抑制剂在煤中分离硫铁矿中的应用
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Application No.: PCT/US1989001613Application Date: 1989-04-17
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Publication No.: WO1989010200A1Publication Date: 1989-11-02
- Inventor: THE DOW CHEMICAL COMPANY , KLIMPEL, Richard, R. , HANSEN, Robert, D.
- Applicant: THE DOW CHEMICAL COMPANY
- Assignee: THE DOW CHEMICAL COMPANY
- Current Assignee: THE DOW CHEMICAL COMPANY
- Priority: US183,577 19880419
- Main IPC: B03D01/02
- IPC: B03D01/02
Abstract:
The separation of coal from pyrite is enhanced by the use of an effective amount of a polymeric acid or salt thereof as a pyrite depressant in conventional flotation processes. The polymeric acid may be a carboxylic or sulfonic acid. An example of a salt of a polymeric acid useful in the process is sodium polyacrylate.
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