Silica-calcia low-grade collophanite positive and inverse floatation process

A positive and negative flotation, low-grade technology, applied in flotation, solid separation, etc., can solve the problems of content reduction, difficulty in obtaining phosphorus concentrate, etc., and achieve the effect of improving utilization rate

CN104907183AActive Publication Date: 2015-09-16WUHAN INSTITUTE OF TECHNOLOGY +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: WUHAN INSTITUTE OF TECHNOLOGY
Publication Date: 2015-09-16

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Abstract

The invention relates to a silica-calcia low-grade collophanite positive and inverse floatation process, which comprises the steps: 1 silica-calcia low-grade collophanite ores are broken up and grinded to enable phosphate minerals and gangue mineral monomers to dissociate, then are added with water to mix size, enter positive and inverse floatation, get rid of impurities in ores, and improve grade of phosphorite. Compared with the prior art, the silica-calcia low-grade collophanite positive and inverse floatation process has the advantages that the content of only one kind of gangue minerals can be reduced by adopting direct floatation and single inverse floatation, can reduce the contents of silicate minerals, carbonate minerals and iron and aluminum silicate minerals, can obtain low magnesium low power half oxide low silicon phosphate concentrate by adopting the silica-calcia low-grade collophanite positive and inverse floatation process, successfully achieves mineral processing enrichment of collophane calcium collophanite, and can improve use rate of phosphorus resource. The silica-calcia low-grade collophanite positive and inverse floatation process overcomes the defects that an existing floatation process can not be applied for mineral processing of silica-calcia collophanite which is high in content of high power half oxides.

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Description

technical field

[0001] The invention relates to a forward and reverse flotation process of silicon-calcium low-grade colloidal phosphate rock. Background technique

[0002] Phosphate rock is a non-renewable basic raw material for the production of phosphate fertilizers and phosphorus chemical products. my country is rich in phosphate rock, with a resource reserve of 16.786 billion tons and an average grade of 16.95%. The high-grade (30%) ore that can be directly used can only be mined for more than ten years. It is complex, finely distributed, poor dissociation, and high in gangue minerals such as silicate minerals, carbonate minerals, and sesquioxides. Its development and utilization is a worldwide problem. In phosphate rock flotation, direct flotation and single reverse flotation can only reduce the content of one of the gangue minerals, and it is difficult to obtain low-magnesium, low-sesquioxide, and low-silicon phosphate concentrate. Contents of the invention [0003...

Claims

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