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Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method

A technology of high pyrite concentrate and pyrrhotite is applied in the field of beneficiation activator and flotation to remove pyrrhotite in high pyrite concentrate, which can solve the problem of low recovery rate and high iron concentrate recovery rate. Problems such as poor desulfurization effect of pyrite concentrate

Active Publication Date: 2016-03-02
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, its preparation and use are simple and easy, and it is suitable for ordinary tap water and industrial backwater, and can solve the problems of poor desulfurization effect of high-sulfur iron concentrate and low recovery rate of iron concentrate.

Method used

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  • Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method
  • Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method
  • Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A high-sulfur magnetic separation iron concentrate containing sulfur mainly pyrrhotite in Inner Mongolia has an iron grade of 68.70% and a sulfur grade of 1.66%. The flotation process of "one rough, one fine, two sweep" is used for flotation desulfurization. The flotation reagents were added sequentially in the order of LJ reagent, collector butyl xanthate, and foamer No. 2 oil, and the dosage of the reagents in the selection and sweeping sections was halved at one time. The reagent system is shown in Tables 1 and 2.

[0043] Table 1 Flotation LJ agent formula (solution mass percent concentration is 1%, all mixed by mass ratio)

[0044]

[0045] Table 2 Flotation LJ reagent dosage (g / t, calculated according to the weight of dry ore for flotation)

[0046]

[0047] For the above flotation process, the control flotation time is 3-10 minutes for the rough selection section, 2-8 minutes for the fine selection section, 2-6 minutes for the first section of sweeping, and...

Embodiment 2

[0052] A high-sulfur magnetic separation iron concentrate containing sulfur mainly pyrrhotite in Inner Mongolia has an iron grade of 66.70% and a sulfur grade of 2.34%. The flotation process of "one rough, one fine, two sweep" is used for flotation desulfurization. The flotation reagents were added sequentially in the order of LJ reagent, collector butyl xanthate, and foamer No. 2 oil, and the dose of reagents in the selection and sweeping sections was halved once. The reagent system is shown in Tables 4 and 5.

[0053] Table 4 flotation LJ medicament formula (solution mass percent concentration is 1%, all mixed by mass ratio)

[0054]

[0055] Table 5 Flotation LJ reagent dosage (g / t, calculated according to the weight of dry ore feed to ore for flotation)

[0056]

[0057] For the above flotation process, the control flotation time is 3-10 minutes for the rough selection section, 2-8 minutes for the fine selection section, 2-6 minutes for the first section of sweeping,...

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Abstract

The invention relates to a desulfurization reagent for removing pyrrhotite in an iron concentrate containing high sulphur by a flotation method. The desulfurization reagent is characterized in that a flotation agent is prepared by mixing citric acid, tartaric acid, oxalic acid and copper sulfate which are prepared into a, b and c mixed solutions. For magnetic iron concentrate with different pyrrhotite contents, 0 to 50% of mixed solution b and 0 to 50% of mixed solution c are added to the mixed solution a to prepare a floatation desulfurization reagent which can effectively activate the pyrrhotite so as to separate the pyrrhotite and magnetite, and as a result, the optimal desulfurization effect can be achieved. The flotation desulfurization reagent is simple and easy to prepare and use, common tap water and industrial backwater can be used for preparation of desulfurization reagent, and the current problems of low desulfurization and low recovery rate of the iron concentrate containing high sulphur can be solved.

Description

technical field [0001] The invention relates to a beneficiation activator, in particular to a desulfurization agent for flotation removal of pyrrhotite in high-sulfur iron concentrate (hereinafter referred to as LJ desulfurization agent), which belongs to the field of mineral processing. Background technique [0002] The sulfur in the refractory high-sulfur iron concentrate mainly exists in the form of pyrrhotite, and its desulfurization problem has long restricted the development of iron and steel enterprises, which is a common problem faced by the entire industry. Most of the iron ores in Xinjiang, Anhui, Hubei, Jiangsu, Inner Mongolia and other places in China contain pyrrhotite to varying degrees, and the sulfur content is high; in addition, some iron ores imported from abroad also contain high sulfur content. of sulfur. In order to make full use of these iron ore resources, desulfurization must be carried out. However, since the specific magnetic susceptibility and sp...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D101/04
CPCB03D1/018B03D2201/02B03D2201/04
Inventor 李解李保卫曹钊王介良贾艳卢虎生屈启龙姚刚韩继铖
Owner INNER MONGOLIA UNIV OF SCI & TECH
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