发明公开
- 专利标题： COLLECTOR FOR FLOTATION OF CLAY MINERALS FROM POTASH ORES
- 专利标题（中）： 收集器从钾盐粘土矿物浮选
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申请号： EP08760774.3申请日： 2008-06-10
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公开(公告)号： EP2160251A1公开(公告)日： 2010-03-10
- 发明人: GUSTAFSSON, Jan Olof
- 申请人： Akzo Nobel N.V.
- 申请人地址： Velperweg 76 6824 BM Arnhem NL
- 专利权人： Akzo Nobel N.V.
- 当前专利权人： Akzo Nobel N.V.
- 当前专利权人地址： Velperweg 76 6824 BM Arnhem NL
- 代理机构： Schalkwijk, Pieter Cornelis
- 优先权： US934305P 20070612; EP07013198 20070705
- 国际公布： WO2008152029 20081218
- 主分类号： B03D1/01
- IPC分类号： B03D1/01 ; C01D3/08 ; B03D101/02 ; B03D103/10
摘要：
The invention relates to a flotation process for removal of slimes from potash ores wherein a collector is used selected from the group of ethoxylated fatty amines having the formulae (formula I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and less than 100, and (formula II) wherein R3 is a hydrocarbyl group having 8-22 carbon atoms; z is a number 1-3; X, Y and Y' are, independently, an alkyl group with 1-4 carbon atoms or the group -(EO)
s H, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y' is a group -(EO)
s H. The invention further relates to a process wherein the step of flotation of slime is followed by a step of flotation of KCI using a different type of collector.
s H, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y' is a group -(EO)
s H. The invention further relates to a process wherein the step of flotation of slime is followed by a step of flotation of KCI using a different type of collector.
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