Application of hydroxyethyl starch ether in flotation of fluorite ore

A technology of hydroxyethyl starch ether and fluorite ore, which is applied in flotation, solid separation, etc., can solve the problems of poor quality of flotation concentrate, difficult separation of fluorite, calcite and barite gangue minerals, and effective recovery rate Low-level problems, to achieve the effect of less environmental pollution, improve the level of comprehensive utilization of resources, improve grades and recovery rates

Active Publication Date: 2018-03-23
郴州市苏仙区黄泥坳矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of application of hydroxyethyl starch ether in the flotation of fluorite ore, aiming at the poor quality of the flotation concentrate of complex and refractory fluorite ore such as calcite type and barite type and the relatively low effective recovery rate. Low-level problems, the flotation inhibitor hydroxyethyl starch ether of the present invention can inhibit the flotation of gangue minerals such as calcite and barite, significantly improve the separation effect of fluorite and other minerals from calcite and barite, and solve the problem of fluorite It is difficult to separate from calcite and barite gangue minerals, and it can also be used for the suppression of calcite and barite minerals in other flotation processes

Method used

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  • Application of hydroxyethyl starch ether in flotation of fluorite ore
  • Application of hydroxyethyl starch ether in flotation of fluorite ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The flotation test is carried out by XFGⅡ hanging tank flotation machine. First, add 2g of fluorite or calcite or barite pure minerals to the flotation tank, then add 35ml of distilled water to stir and adjust the slurry, and use HCl or NaOH to adjust the pH of the slurry to 9. And stir, then add hydroxyethyl starch ether inhibitor 20mg / L and stir for 5min, sodium oleate 20mg / L, and then scrape. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0020] The test results of Example 1 are shown in Table 1.

[0021] Table 1 Test comparison results

[0022]

Embodiment 2

[0024] The flotation test is carried out by XFGⅡ hanging tank flotation machine. First, add 2g of fluorite or calcite or barite pure minerals to the flotation tank, then add 35ml of distilled water to stir and adjust the slurry, and use HCl or NaOH to adjust the pH of the slurry to 11. And stir, then add hydroxyethyl starch ether inhibitor 60mg / L and stir for 2min, sodium oleate 40mg / L, and then scrape bubbles. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0025] The test results of Example 2 are shown in Table 2.

[0026] Table 2 Test comparison results

[0027]

Embodiment 3

[0029] The flotation test was carried out with XFGⅡ type hanging tank flotation machine. First, 1g of fluorite and 1g of barite were added to the flotation tank, then 35ml of distilled water was added to stir the slurry, and the pH of the pulp was adjusted to 9 with HCl or NaOH and stirred, and then Add hydroxyethyl starch ether inhibitor 60mg / L and stir for 3min, sodium oleate 100mg / L in turn, then scrape bubbles again, artificially mix ore and separate by flotation once. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0030] Example 3 test results are shown in Table 3.

[0031] Table 3 Test results

[0032] Inhibitor

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Abstract

The invention relates to beneficiation and flotation technologies, in particular to application of hydroxyethyl starch ether to fluorite ore flotation. A flotation method for fluorite ores includes the following steps that the fluorite ores containing barite and calcite minerals are ground, fed into a flotation machine and stirred for pulp conditioning; then the pH of ore pulp is adjusted to be larger than or equal to 7 through HCl or NaOH or Na2CO3 and stirring is performed; hydroxyethyl starch ether inhibitor is added, the effect that the concentration of the inhibitor is 20-200 mg / L is ensured, and stirring is performed for two to five minutes; and finally, a collecting agent of sodium oleate is added with the use amount being 20-400 mg / L, and inflation and bubble scraping are performed. The hydroxyethyl starch ether has good ability to inhibit the barite and the calcite and has the advantages of environment friendliness, wide source, low price, obvious effects and the like.

Description

technical field [0001] The invention relates to ore dressing flotation technology, in particular to the application of hydroxyethyl starch ether in fluorite ore flotation. Background technique [0002] my country's fluorite resources mainly have single-type fluorite deposits (spots) but small reserves, associated (symbiotic)-type deposits (spots) few but large reserves, associated reserves greatly exceed single-type reserves, more lean ore, less rich ore , There are many difficult minerals and few easy minerals. Therefore, the above reasons lead to a low level of overall development and utilization of fluorite resources in my country. [0003] For a long time, the difficulty of fluorite flotation lies in the effective separation of fluorite from quartz, calcite, barite and polymetallic minerals, which is mainly due to the similar physical and chemical properties of the surfaces of fluorite, calcite, quartz and barite. Fluorite flotation in polymetallic associated fluorite m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/016B03D101/06B03D103/04
CPCB03D1/016B03D2201/06B03D2203/04
Inventor 余新阳王强强王浩林魏新安曾安
Owner 郴州市苏仙区黄泥坳矿业有限公司
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