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Application of hydroxypropyl starch ether in flotation of fluorite ore

A technology of hydroxypropyl starch ether and fluorite ore, which is applied in flotation, solid separation, etc., can solve the problem of difficult separation of fluorite, calcite and barite gangue minerals, low effective recovery rate, and poor quality of flotation concentrate Poor and other problems, achieve good suppression ability, improve grade and recovery rate, shorten the effect of flotation process

Active Publication Date: 2018-05-04
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 hydroxypropyl starch ether in the flotation of fluorite ore, aiming at the poor quality of the flotation concentrate of complex refractory fluorite ore such as calcite type and barite type and the relatively low effective recovery rate. Low-level problems, the flotation inhibitor hydroxypropyl 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 hydroxypropyl starch ether in flotation of fluorite ore
  • Application of hydroxypropyl 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 hydroxypropyl starch ether inhibitor 20mg / L and stir for 5min, sodium oleate 20mg / L, and then scrape bubbles. 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 hydroxypropyl 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 hydroxypropyl 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 the mineral concentration and floatation technology, in particular to application of hydroxypropyl starch ether in fluorite ore flotation. A floatation method of fluorite ore comprises the steps of grinding the fluorite ore comprising barite and calcite minerals, feeding the ground fluorite ore into a flotation machine, stirring the fluorite ore for pulp mixing, adjusting the pH value of ore pulp through HC1, NaOH or Na2CO3 until the pH value is greater than or equal to 7, stirring the ore pulp, adding hydroxypropyl starch ether inhibitors for guaranteeing that the concentration of the ore pulp ranges from 20 mg / L to 200 mg / L, and stirring the ore pulp for 2-5 minutes; adding sodium oleate serving as collecting agents, carrying out stirring and then carrying out gas filling and bubble scraping, wherein the amount of the sodium oleate is 20-400 mg / L. The hydroxypropyl starch ether is good in ability to restrain barite and calcite and has the advantages of being friendly to environment, wide in source, low in cost and obvious in effect.

Description

technical field [0001] The invention relates to ore dressing flotation technology, in particular to the application of hydroxypropyl 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 ...

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 余新阳王礼平王浩林王强强魏新安曾安何桂春
Owner 郴州市苏仙区黄泥坳矿业有限公司
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