Invention Grant
US07954643B2 Use of a derivative of aspartic acid as a collector in froth flotation processes
失效
在泡沫浮选过程中使用天冬氨酸的衍生物作为收集剂
- Patent Title: Use of a derivative of aspartic acid as a collector in froth flotation processes
- Patent Title (中): 在泡沫浮选过程中使用天冬氨酸的衍生物作为收集剂
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Application No.: US10578106Application Date: 2004-11-05
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Publication No.: US07954643B2Publication Date: 2011-06-07
- Inventor: Ludwig Eisenhuth , Elisabeth Henriksson , Anders Klingberg
- Applicant: Ludwig Eisenhuth , Elisabeth Henriksson , Anders Klingberg
- Applicant Address: NL Arnhem
- Assignee: Akzo Nobel N.V.
- Current Assignee: Akzo Nobel N.V.
- Current Assignee Address: NL Arnhem
- Agent Ralph J. Mancini
- Priority: SE0302986 20031113
- International Application: PCT/EP2004/012744 WO 20041105
- International Announcement: WO2005/046878 WO 20050526
- Main IPC: B03D1/01
- IPC: B03D1/01 ; B03D1/02
Abstract:
A derivative of aspartic acid is used as a collector for a phosphate containing mineral, such as apatite, in a froth flotation process. According to the invention the collector has a high selectivity for phosphate containing minerals even in the presence of carbonate minerals, such as calcite. The derivative has the formula (I) where RI is a hydrophobic group containing a hydrocarbon group of 6-24 carbon atoms; RII is an alkyl group with 1-7 carbon atoms or a group of the formula (B)yH, in which B is an alkyleneoxy group with 2-4 carbon atoms and y is a number from 1 to 10; and M is a group selected from the group consisting of a cation or hydrogen. Methods for producing the derivative are also described.
Public/Granted literature
- US20070071665A1 Use of a derivative of aspartic acid as a collector in froth flotation processes Public/Granted day:2007-03-29
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