Low grade fluorite and barite flotation separation method

A separation method and barite technology, applied in flotation, solid separation, etc., can solve the problems of increasing tailings storage pressure, waste of resources, etc., and achieve the effects of less energy consumption, less dosage of chemicals, and simple process structure

Inactive Publication Date: 2009-11-25
GUANGXI UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, when fluorite and barite appear together with associated minerals, currently only fluorite or barite minerals are generally recovered, which not only wastes resources, but also increases the storage pressure of tailings; especially the grade of fluorite and barite is only about 30%. When it appears in the form of associated minerals, there is no report on the simultaneous recovery of fluorite and barite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Mineral raw materials:

[0027] The content of fluorite in the ore used is 33.92%, that of barite is 35.33%, that of gangue mineral silicon dioxide is 13.67%, and there is also a small amount of calcium carbonate.

[0028] 2. Flotation agents and operating conditions:

[0029] Water glass 300g / t 10% aqueous solution

[0030] Oleic acid 500g / t direct stock solution addition

[0031] Starch 50g / t 1% aqueous solution

[0032] Sodium sulfate 500g / t 5% aqueous solution

[0033] Hydrochloric acid 300g / t 10% aqueous solution

[0034] Sodium hexametaphosphate 300g / t 5% aqueous solution

[0035] During flotation, use sulfuric acid to adjust the pH of the pulp to 6-7. During the flotation process, first add water glass to the grinding machine to grind the ore until the mineral monomers are dissociated, and then add acid to the flotation machine for fluorite , Barite mixed flotation to get mixed concentrate, and then add barite inhibitor to inhibit the barite, after seven...

Embodiment 2

[0037] 1. Mineral raw materials

[0038] The content of fluorite in the ore is 40.14%, that of barite is 34.67%, that of silicon dioxide is 15.78%, and that of calcium carbonate is 3.54%.

[0039] 2. Flotation agents and operating conditions:

[0040] Water glass 400g / t 10% aqueous solution

[0041] Oleic acid 700g / t direct stock solution addition

[0042] Starch 60g / t 5% aqueous solution

[0043] Sodium sulfate 700g / t 10% aqueous solution

[0044] Hydrochloric acid 400g / t 20% aqueous solution

[0045] Sodium hexametaphosphate 350g / t 10% aqueous solution

[0046] During flotation, the pH value of the pulp is 6-7; in the flotation process, first add water glass to the ore grinder to grind the ore until the mineral monomers are dissociated, and then add acid to the flotation machine for fluorite and barite Mixed flotation of rocks to get mixed concentrate, and then add barite inhibitor to inhibit barite, after eight times of beneficiation to get fluorite concentrate, and s...

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Abstract

A low grade fluorite and barite flotation separation method uses waterglass as the inhibitor for silicious mineral and calcium carbonate mineral; uses oleic acid as the collector for fluorite and barite; and uses starch, sodium sulphate, hydrochloric acid and sodium hexametaphosphate as the inhibitor for barite mineral. The invention can perform flotation separation of low grade fluorite and barite effectively; under the condition that the given fluorite grade is 33.92%-40.41%, and the barite grade is 34.67%-35.33%, by mixing, flotation and separation, can achieves the fluorite concentrate with grade of above 95% and recovery rate of 75.5%-78.5%, and the barite concentrate with grade of 92.3%-93.27% and recovery rate of 75.2%-79.73%.

Description

1. Technical field [0001] The invention relates to a mineral flotation separation method, in particular to a low-grade fluorite barite mineral flotation separation method. 2. Background technology [0002] The existing fluorite and barite recovery methods at home and abroad generally use water glass as the inhibitor of siliceous minerals, and oleic acid or sodium oleate as the collector of fluorite minerals for recovery; while barite is mostly recovered by gravity separation equipment Recovery, there is also the use of flotation methods for recovery. However, when fluorite and barite appear together with associated minerals, currently only a single fluorite or barite mineral is recovered, which not only wastes resources, but also increases the storage pressure of tailings; especially the grade of fluorite and barite is only about 30%. When it appears in the form of associated minerals, there is no report on the simultaneous recovery of fluorite and barite. 3. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D101/02B03D101/06B03D103/04
Inventor 魏宗武陈建华穆枭兰丽红
Owner GUANGXI UNIV
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