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Application of phosphoric acid ester compound to flotation of calcium-containing minerals

A phosphate ester and mineral flotation technology, applied in flotation, solid separation, etc., can solve the problems of small dosage of chemicals, difficulty in flotation and separation of minerals containing calcium salts, etc., achieve low production cost, low cost, and meet the requirements of industrial The effect of production

Active Publication Date: 2015-12-16
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] For the flotation process of calcium-containing salt minerals in the prior art, the surface chemical composition of calcium-containing minerals is similar to that of the flotation agent and the reactivity with the agent is similar, resulting in difficulties in the flotation separation of calcium-containing salt minerals. The purpose of the present invention is to provide a kind of phosphoric acid ester compound as the application of calcite inhibitor, phosphoric acid ester compound can effectively and selectively inhibit the stripping of calcite in the flotation separation process of calcium-containing minerals, the inhibitory effect is remarkable, and the dosage of medicament is small, Effectively realize the flotation separation of calcium-containing minerals; especially suitable for flotation of fluorite, apatite, scheelite, dolomite and other ores

Method used

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  • Application of phosphoric acid ester compound to flotation of calcium-containing minerals
  • Application of phosphoric acid ester compound to flotation of calcium-containing minerals
  • Application of phosphoric acid ester compound to flotation of calcium-containing minerals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 10g of ethylene glycol, 40g of ethylene glycol monoethyl ether, 40g of polyoxyethylene ether glycerin (molecular weight 1500), 30g of ethylene glycol monoethyl ether into a 300mL three-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel. Diethyl ether, heated to 75°C under stirring and mixing, then slowly added 20g of phosphorus pentoxide, controlled the reaction temperature to reach 130-140°C after adding phosphorus pentoxide, then added 30g of ethylene glycol monoethyl ether, and heated at 140 Keep warm at ℃ for 1 hour, add water to cool the product, and obtain the desired calcite inhibitor. Its infrared spectroscopic analysis as figure 1 . It is used for the separation of calcite in fluorite flotation.

[0029] The phosphate ester compound obtained above was used for the flotation separation of fluorite and calcite. Table 1 shows the comparison results between the new agent and the traditional calcite inhibitor acidified water...

Embodiment 2

[0034] Add 10g ethylene glycol, 40g ethylene glycol monoethyl ether, 40g polyoxyethylene ether glycerin (molecular weight 1200), 30g ethylene glycol monoethyl ether to a 300mL three-neck flask equipped with a stirrer, thermometer, condenser and dropping funnel. Diethyl ether, heated to 80°C under stirring and mixing, then slowly added 20g of phosphorus pentoxide, controlled the reaction temperature to reach 130-140°C after adding phosphorus pentoxide, then added 30g of ethylene glycol monoethyl ether, and heated at 140 Keep warm at ℃ for 2 hours, add water to cool the product, and then obtain the desired calcite inhibitor. Its infrared spectroscopic analysis as figure 1 . It is used for the separation of calcite in fluorite flotation.

[0035] The phosphate ester compound obtained above was used for the flotation separation of Shizhuyuan tungsten ore and calcite. Table 2 is the comparison result of the new agent and the traditional calcite inhibitor salinized water glass. H...

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Abstract

The invention discloses an application of a phosphoric acid eater compound to flotation of calcium-containing minerals. The phosphoric acid eater compound replaces traditional water glass to serve as a calcite inhibitor for the flotation of the calcium-containing minerals. The phosphoric acid eater compound has a selective inhibiting effect on calcite, and is particularly suitable for flotation of fluorite, scheelite, apatite, cassiterite and other minerals. In addition, the phosphoric acid eater compound has the characteristics of being good in inhibiting effect, stable in property, small in usage amount and low in cost so that the quality of concentrate of the scheelite, the fluorite and the apatite can be effectively improved.

Description

technical field [0001] The invention relates to the application of a phosphate compound in the flotation of calcium-containing minerals, and belongs to the technical field of flotation inhibitors of calcium-containing ores. Background technique [0002] Calcium-containing salt minerals are important raw materials for industrial and agricultural production and national defense construction. For example, scheelite is the raw material for the manufacture of tungsten alloy steel, apatite is the raw material for agricultural fertilizers, fluorite is the chemical raw material, and calcite is the raw material for building materials. . There are many kinds of calcium-containing salt minerals, with wide distribution of resources and large reserves. They have a broad market and important use value, and are widely used in coatings, rubber, ceramics, metallurgy, and chemical industries. [0003] The separation between calcium salt minerals and gangue minerals such as quartz is the main...

Claims

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Application Information

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IPC IPC(8): B03D1/016
Inventor 胡岳华孙伟韩海生耿志强陈臣
Owner CENT SOUTH UNIV
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