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A kind of flotation depressant and preparation method and application thereof

An inhibitor and flotation technology, applied in flotation, solid separation, etc., can solve the problems of low effective recovery rate, difficult separation of barite gangue minerals, poor quality of flotation concentrate, etc., and achieve low environmental pollution, Improve the comprehensive utilization level of resources, improve the effect of grade and recovery rate

Active Publication Date: 2017-12-29
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problems such as the poor quality of the flotation concentrate of complex refractory fluorite ores such as calcite type and barite type and the low effective recovery rate, the flotation inhibitor of the present invention (utilizes ferric chloride to modify ordinary starch, "Iron starch" for short) can suppress 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 difficult separation of fluorite and calcite and barite gangue minerals , can also be used for suppression of calcite and barite minerals in other flotation processes

Method used

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  • A kind of flotation depressant and preparation method and application thereof
  • A kind of flotation depressant and preparation method and application thereof
  • A kind of flotation depressant and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Add deionized water:starch:ferric chloride with a mass ratio of 20:1:0.05 into the three-necked flask, and then put the three-necked flask into a magnetic stirrer for heating and stirring reaction in a water bath. The reaction temperature in the water bath is 90°C, and the stirring speed 800r / min, stirring until the solution turns reddish brown, and the obtained iron starch solution is used for flotation test research. The flotation test was carried out with XFGⅡ type hanging tank flotation machine. First, add 2g of pure minerals to the flotation tank, then add 35ml of distilled water, adjust the slurry for 1min, adjust the pH of the slurry to 9 with HCl or NaOH and stir for 2min, then add starch in turn Inhibitor 20mg / L stirred for 3min, sodium oleate 40mg / L stirred for 3min, and then scraped for 4min. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated.

[0019] The inhibitory effects of iron starch and ord...

Embodiment 2

[0023] Add deionized water:starch:ferric chloride with a mass ratio of 100:1:0.2 into the three-necked flask, and then put the three-necked flask into a magnetic stirrer for heating and stirring reaction in a water bath. The reaction temperature of the water bath is 95°C, and the stirring speed 400r / min, stirring until the solution turns reddish brown, and the obtained iron starch solution is used for flotation test research. The flotation test was carried out with XFGⅡ type hanging tank flotation machine. First, add 2g of pure minerals to the flotation tank, then add 35ml of distilled water, adjust the slurry for 1min, adjust the pH of the slurry to 9 with HCl or NaOH and stir for 2min, then add starch in turn 20 mg / L of class inhibitors, stirred for 3 minutes, sodium oleate 40 mg / L, stirred for 3 minutes, and then scraped and soaked for 4 minutes. After the flotation test, the foam product is filtered, dried, weighed, assayed and the recovery rate calculated. Example test r...

Embodiment 3

[0027] Add deionized water:starch:ferric chloride with a mass ratio of 100:1:0.2 into the three-necked flask, and then put the three-necked flask into a magnetic stirrer for heating and stirring reaction in a water bath. The reaction temperature of the water bath is 95°C, and the stirring speed 400r / min, stirring until the solution turns reddish brown, and the obtained iron starch solution is used for flotation test research. The flotation test was carried out with XFGⅡ 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, and the pulp was mixed for 1min. The pH of the slurry was adjusted to 6 with HCl or NaOH and stirred for 2min. Then add iron starch inhibitor 40mg / L and stir for 3 minutes, sodium oleate 40mg / L and stir for 3 minutes, then scrape and soak for 4 minutes, artificially mixed ore is separated by flotation once. After the flotation test, the foam product is filtered, dried,...

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Abstract

The invention relates to the technical field of mineral dressing, in particular to a flotation depressing agent as well as a preparation method and application thereof. According to the method, firstly, deionized water, starch and ferric chloride are sequentially added into a three-mouth flask according to a mass ratio being (20-100):1:(0.05-0.2); then, the three-mouth flask is put into a magnetic stirrer to take a water bath heating stirring reaction; the stirring speed is 400 to 800r / min; the water bath reaction temperature is greater than or equal to 90 DEG C; stirring is performed until a solution becomes mahogany; the finished product solution can be used for flotation test study. The depressing agent capability on calcite and barite minerals is high; the fluorite flotation concentrate grade and the recovery rate are favorably improved; the flotation flow is shortened; the comprehensive utilization level of resources is improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a flotation inhibitor, a preparation method and an application thereof. 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 fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/016B03D101/06B03D103/02
CPCB03D1/016B03D2201/06B03D2203/02
Inventor 余新阳曾安王浩林王强强魏新安
Owner JIANGXI UNIV OF SCI & TECH
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