Invention Grant
US09387490B2 Method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrrhotite by exploiting the synergy of multiple depressants
有权
通过利用多种抑制剂的协同作用，提高含有磁黄铁矿的硫化镍矿石浮选中选择性和回收率的方法
- Patent Title: Method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrrhotite by exploiting the synergy of multiple depressants
- Patent Title (中): 通过利用多种抑制剂的协同作用，提高含有磁黄铁矿的硫化镍矿石浮选中选择性和回收率的方法
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Application No.: US13862117Application Date: 2013-04-12
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Publication No.: US09387490B2Publication Date: 2016-07-12
- Inventor: Jie Dong , Manqiu Xu
- Applicant: VALE S.A.
- Applicant Address: BR Rio de Janeiro
- Assignee: VALE S.A.
- Current Assignee: VALE S.A.
- Current Assignee Address: BR Rio de Janeiro
- Agency: Arent Fox LLP
- Main IPC: B03D1/02
- IPC: B03D1/02 ; B03D1/06 ; B03D1/016 ; B03D1/018 ; B03D1/01 ; B03D1/012 ; B03D1/014
Abstract:
A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the valuable sulphide minerals in the flotation of non-ferrous metal sulphides, while reducing or eliminating the use of environmentally problematic chemicals such as polyamines. The method has significant economic and environmental benefits. The multiple depressants comprise at least one organic polymer, at least one sulphur-containing compound and/or at least one nitrogen-containing organic compound.
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