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A method for improving quality and reducing impurities of tin concentrate

A technology for tin concentrate and concentrate, which is applied in the field of tin concentrate quality improvement and impurity reduction, can solve the problems of low tin concentrate grade, etc., and achieve the effects of high tin concentrate grade, improved tin concentrate grade, and good selectivity.

Active Publication Date: 2021-10-29
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when adopting this method to obtain a higher recovery rate, it inevitably leads to a low tin concentrate grade. The present invention provides an economically feasible method for improving the final tin concentrate grade for this type of tin concentrate

Method used

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  • A method for improving quality and reducing impurities of tin concentrate
  • A method for improving quality and reducing impurities of tin concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: The tin concentrate of a mineral processing plant in Wenshan, Yunnan is used for research, the tin grade is 5.36%, and the gangue minerals are mainly calcite, talc, topaz, etc., such as figure 1 As shown, the specific operation is as follows:

[0034] (1) Concentrate and adjust the low-grade tin concentrate from a concentrator in Wenshan, Yunnan. Foaming agent pine alcohol oil 40g / t, pre-desulfurization flotation to obtain desulfurization concentrate I and desulfurization tailings I;

[0035] (2) Perform shaker gravity separation on the desulfurization tailings I in step (1) to obtain re-selected tin concentrate, tin medium ore and tailings, and tailings are discarded;

[0036] (3) Concentrating the gravity-selected tin concentrate in step (2) to obtain concentrated grit and overflow, the water content of the grit is 10%, and the overflow is discarded;

[0037] (4) Carry out the concentrated sand settling in step (3) for ore washing in artificial floatin...

Embodiment 2

[0043] Example 2: The tin concentrate of a cassiterite beneficiation plant in Gejiu, Yunnan Province was used for research. The tin raw ore of the concentrator contained high sulfur and mud content. After the raw ore was sorted by the gravity-magnetic-flotation combined process, the tin concentrate contained 8.62% tin, veins Stone minerals are calcite, fluorite, etc., such as figure 1 As shown, the specific steps are as follows:

[0044] (1) Concentrate the low-grade tin concentrate from a cassiterite beneficiation plant in Gejiu, Yunnan Province. The liquid-solid ratio of the slurry is 30%. Then add 800g / t of activator sulfuric acid and 60g / t of butyl sodium xanthate as collector. , foaming agent pine alcohol oil 50g / t, pre-desulfurization flotation to obtain desulfurization concentrate I and desulfurization tailings I;

[0045] (2) Perform shaker gravity separation on the desulfurization tailings I in step (1) to obtain re-selected tin concentrate, tin medium ore and tailin...

Embodiment 3

[0053] Embodiment 3: The tin concentrate of a certain cassiterite dressing plant in Guangxi is used for research, the tin grade is 12.11%, and the gangue minerals are mainly fluorite and pyroxene, such as figure 1 As shown, the specific operation is as follows:

[0054] (1) Concentrate and adjust the low-grade tin concentrate of a cassiterite concentrator in Guangxi. The liquid-solid ratio of the slurry is 35%. Add activator sulfuric acid 1000g / t, collector butyl sodium xanthate 80g / t, Foaming agent pine alcohol oil 60g / t, pre-desulfurization flotation to obtain desulfurization concentrate I and desulfurization tailings I;

[0055] (2) Perform shaker gravity separation on the desulfurization tailings I in step (1) to obtain re-selected tin concentrate, tin medium ore and tailings, and tailings are discarded;

[0056] (3) Concentrating the gravity-selected tin concentrate in step (2) to obtain concentrated grit and overflow, the water content of the grit is 20%, and the overfl...

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Abstract

The invention discloses a method for improving the quality and reducing impurities of tin concentrate. The tin concentrate is subjected to pre-desulfurization flotation to obtain desulfurization concentrate and desulfurization tailings, and the desulfurization tailings is subjected to shaking table gravity separation to obtain re-election tin concentrate , Tin middle ore and tailings, tailings throwing tailings, concentration of tin concentrate by gravity separation to obtain concentrated sand and overflow, artificial floating tank washing for concentrated sand, to obtain artificial floating tank washing concentrate and tailings Desulfurization flotation concentrate and tailings are obtained by performing secondary desulfurization flotation on the ore washing tailings in the artificial floating tank, and tin flotation is performed on the desulfurization flotation tailings to obtain flotation tin concentrate and tailings, and pre-desulfurization The concentrate and secondary desulfurization concentrate are combined to form sulfur concentrate, and the artificial flotation tank washing concentrate and tin flotation concentrate are combined to form the final high-grade tin concentrate. High-grade tin concentrate, and the by-product sulfur concentrate is separated at the same time, which improves the economic benefits of the enterprise.

Description

technical field [0001] The invention relates to a method for improving the quality and reducing impurities of tin concentrate, which belongs to the technical field of mineral processing. Background technique [0002] The element symbol of tin (Tin) is Sn, which is located in the fourteenth position of the fifth cycle in the periodic table of elements, with an atomic number of 50 and an atomic weight of 118.71. Tin is one of the metals with a long history. In the Xia Dynasty in 2000 BC, tin and copper were used to produce copper-tin alloy bronzes. Metal tin can also be used to make tin candlesticks, tin pots, tin cups, etc. Because of its excellent properties such as low melting point, non-toxic and difficult to oxidize, corrosion resistance, good plasticity and beautiful appearance, tin has been used in modern industrial society since ancient times, and has been widely used in military and political fields. [0003] Cassiterite is the main type of tin-bearing minerals, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 刘殿文郑其方申培伦章晓林蔡锦鹏苏超李江丽杨升旺陈红兵李光荣
Owner KUNMING UNIV OF SCI & TECH
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