A kind of high calcium scheelite flotation collector and its preparation method and application method

A collector, scheelite technology, applied in flotation, solid separation and other directions, can solve the problem that the separation effect of high calcium scheelite is difficult to meet production needs, and achieve stable flotation index, high concentrate grade and high efficiency separation effect

Active Publication Date: 2019-06-11
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the separation effect of existing combined collectors on high-calcium scheelite is still difficult to meet the production needs

Method used

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  • A kind of high calcium scheelite flotation collector and its preparation method and application method
  • A kind of high calcium scheelite flotation collector and its preparation method and application method
  • A kind of high calcium scheelite flotation collector and its preparation method and application method

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preparation example Construction

[0053] The preparation method of a kind of high-calcium scheelite flotation collector of the present invention is to react with oil bottoms, hydroxylamine hydrochloride, sodium hydroxide, sulfuric acid, etc. in the coconut oil refining process, and react with soybean oleic acid After compounding, the collector is treated with saponification, the preparation process is simple, and the obtained collector abandons the shortcomings of the existing scheelite flotation collector, the product performance is stable, and the collection capacity of scheelite is remarkable enhanced. The concrete steps of this preparation method are as follows:

[0054] (1) add the hydroxylamine hydrochloride aqueous solution to the oil bottom in the coconut oil refining process, then add dropwise sodium hydroxide solution to react, the mol ratio n of each material 1 (oil foot): n 2 (Hydroxylamine hydrochloride): n 3 (NaOH) is (1-3): (0.8-2.2): (1.5-3.5), the main components of the used oil bottoms are...

Embodiment 1

[0074]A kind of preparation method of high calcium scheelite flotation collector of the present embodiment, its steps are as follows:

[0075] (1) adding mass concentration to the oil foot in the coconut oil refining process is the hydroxylamine hydrochloride aqueous solution of 10%, and the rear dripping mass concentration is that the sodium hydroxide solution of 50wt% reacts, and the mol ratio of each reactant is n 1 (oil foot): n 2 (Hydroxylamine hydrochloride): n 3 (NaOH) is 1: 2.2: 3.5, and the main components of the oil foot used in the present embodiment are medium-chain fatty acid caprylic acid and capric acid, and calculate the average oil foot mole number with the molecular weight of the capric acid fat in the oil foot, control simultaneously The reaction temperature is 50° C., and the reaction time is 4 hours. After the reaction, acidification treatment is carried out with a sulfuric acid solution with a mass fraction of 5 wt %. The pH of the acidification end poin...

Embodiment 2

[0099] A kind of preparation method of high calcium scheelite flotation collector of the present embodiment, its steps are as follows:

[0100] (1) the oil bottom in the coconut oil refining process is added the hydroxylamine hydrochloride aqueous solution that mass concentration is 15wt%, and the sodium hydroxide solution that rear drop mass concentration is 30wt% reacts, and the mol ratio n of each reactant 1 (oil foot): n 2 (Hydroxylamine hydrochloride): n 3 (NaOH) is 3: 0.8: 1.5, and the main component of used oil foot in the present embodiment is medium-chain fatty acid octanoic acid and capric acid, and calculates average oil foot molar number with the molecular weight of capric acid fat in oil foot, controls simultaneously The reaction temperature is 40° C., and the reaction time is 6 hours. After the reaction, a sulfuric acid solution with a mass fraction of 15 wt % is used for acidification treatment, and the pH of the acidification end point is 4. Then, coconut oil ...

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Abstract

The invention discloses a high-calcium scheelite flotation collector and a preparation method and an application method thereof and belongs to the technical field of solid mineral resource sorting. The preparation method comprises the following steps of: by taking foots, hydroxylamine hydrochloride, sodium hydroxide, sulfuric acid and the like in a coconut oil refining process as raw materials, adding the treated foots in a certain molar ratio into a hydroxylamine hydrochloride aqueous solution at a certain temperature; then dropwise adding a sodium hydroxide aqueous solution with a certain concentration, and performing acidification after the dropwise adding reaction is finished; dehydrating and washing the acidified product to obtain coconut alkylhydroxyoxime acid; and then compounding the coconut alkylhydroxyoxime acid and soy acid in certain percentages by mass to obtain a mixture, and then saponifying the mixture to obtain the high-calcium scheelite flotation collector. The collector prepared by the preparation method disclosed by the invention is stable in property, good in floating index, stable in foam, high in adaptability, low in cost and non-toxic, and meanwhile, can efficiently separate scheelite from calcium-containing minerals in the high-calcium scheelite.

Description

technical field [0001] The invention belongs to the technical field of separation of solid mineral resources, and more specifically relates to a high-calcium scheelite flotation collector and its preparation method and application method. Background technique [0002] my country is very rich in tungsten resources. With the reduction of wolframite resource reserves and the reduction of development scale, the development and utilization of scheelite resources is becoming more and more important. According to the main gangue mineral types of scheelite, it is usually divided into quartz-type scheelite and fluorite, calcite, barite-type scheelite. For quartz-type scheelite, because its gangue minerals are mainly silicate, quartz and other minerals, sorting is relatively simple; while for skarn-type ore containing high calcium such as fluorite, calcite and barite, white Tungsten ore, because the surface properties of these gangue minerals and scheelite are similar, the buoyancy o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D1/02B03D101/02B03D103/04
CPCB03D1/018B03D1/025B03D2201/02B03D2203/04
Inventor 胡义明周永诚皇甫明柱杨帆龙思思
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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