Mineral collector compositions and processes for making and using same,申请号US20000663721-传众专利搜索

Mineral collector compositions and processes for making and using same

申请公布号：US6409022(B1)

申请号：US20000663721

申请日期：2000.09.15

申请公布日期：2002.06.25

申请人：

CYTEC TECHNOLOGY CORP.

发明人：ROTHENBERG ALAN S.;MAGLIOCCO LINO GIOVANNI

分类号：B03D1/004;B03D1/008;B03D1/01;B03D1/02;C07C259/06;C22B1/00;C22B3/16;(IPC1-7):B03D1/01;B03D1/006

主分类号：B03D1/004

摘要：Collector compositions of a mixture of a C6 to C22 fatty hydroxamic acid and an oil for use in a method for the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester of a C6 to C22 fatty acid with a hydroxylamine salt and a base in the presence of an oil and water to produce an alkyl hydroxamate salt; acidifying the alkyl hydroxamate salt, forming an organic layer and an aqueous layer, wherein the organic layer contains a C6 to C22 fatty hydroxamic acid substantially free of starting esters and hydrolysis and transesterification products of the ester; and separating the organic layer from the aqueous layer to provide a collector composition of the C6 to C22 fatty hydroxamic acid and the oil.