A kind of phospho-silicate type rare earth ore flotation collector and its preparation method and application

Abstract

The invention discloses a phosphosilicate-type rare earth ore flotation collector and its preparation method and application; the phosphosilicate-type rare earth ore flotation collector is composed of the following materials with a mass ratio: 5~ 15 parts of octyl ether propyl-a-amino-1,1-diphosphonic acid, 60-80 parts of coconut oleic acid, 5-10 parts of hexadecylsulfonate, 1-3 parts of Tween-60. The phosphosilicate-type rare earth ore flotation collector of the present invention has strong collecting capacity, high recovery rate of concentrate, low production cost and less consumption, especially in phosphosilicate-type rare earth ore or xenotime The sorting effect is good when it is applied in flotation.

Description

Technical field [0001] The invention belongs to the technical field of rare earths, and is specifically a phosphosilicate type rare earth ore flotation collector and a preparation method and application thereof. Background technique [0002] my country’s proven industrial reserves of rare earth oxides are 18.59 million tons, accounting for about 23.6% of the world’s proven reserves of rare earths, with a complete range of light, medium and heavy rare earth elements. There are many types of rare earth industrial minerals, mainly including oxides, fluorocarbonates, phosphates, silicates, and complex salt minerals. At this stage, the three most important minerals for extracting rare earth metals in the industry are monazite [( RE,Th,Y)PO 4 ], bastnaesite [RECO 3 F] and xenotime [(Y,RE)PO 4 ]. Rare earth metals are widely used in clean energy, defense technology, industrial technology, electronic products and other fields. [0003] At present, most rare earth mines with bastnaesite a...

AI Technical Summary

Problems solved by technology

[0003] At present, most rare earth mines with bastnaesite as the main rare earth mineral use one or more of alkyl hydroxamic acid, hydroxamic acid with benzene ring, cycloalkyl hydroxamic acid, and naphthyl hydroxamic acid. Several kinds of collectors are mixed as collectors. Although this type of collectors has achieved good indicators in rare earth flotation, the price is high and the amount used is large, and the overall effect is not ideal when used alone; agents with benzene rings and naphthalene rings are difficult to degrade. Mineral dressing tailings wastewater is difficult to meet the requirements of environmental protection

[0004] At present, there is no report on the industrial utilization of phosphosilicate-type rare earth ores, and there are only laboratory separation indicators: for a very low-grade phosphosilicate-type rare earth ore with a REO content of 1.6%, the test uses A6494 hydroxamic acid The amount of collector is 1kg / ton raw ore, the inhibitor is water glass, and the foaming agent is terpineol. Under the condition of heating to 45°C, after grinding-high-concentration pulping-flotation process, it can Obtained rare earth concentrate with 14.5% REO grade and 75% recovery

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