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Combined reagent for microfine-particle cassiterite flotation and application method thereof

A technology of combining chemicals and fine particles, applied in flotation, solid separation and other directions, can solve problems such as poor flotation effect, and achieve the effects of improved effect, easy availability and low production cost

Inactive Publication Date: 2018-08-14
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor flotation effect of fine-grained cassiterite, and provide a combined agent for fine-grained cassiterite flotation. The combined agent has the characteristics of strong collection ability and good selectivity. , only need to add a small amount of inhibitors during flotation to achieve the ideal separation effect; especially for the flotation of micro-grained cassiterite with a particle size of 2 μm to 38 μm, it has a strong collection ability and a good selectivity

Method used

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  • Combined reagent for microfine-particle cassiterite flotation and application method thereof

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Effect test

Embodiment 1

[0015] The processing object of this embodiment is: a certain tin ore raw ore Sn grade 0.56% in Yunnan, the specific method is (flow process see figure 1 ): first grind the raw ore to -0.038mm, accounting for 60%, the dosage of each agent is: pH regulator sodium carbonate 100g / t, inhibitor water glass 100 g / t, collector tributyl phosphate 20g / t, after one After roughing, the grade of Sn in the tin concentrate is 11.26%, and the recovery rate is 63.58%.

[0016] The collector agent tributyl phosphate is replaced by the combination agent of the present invention (addition amount 20g / t), and the raw materials and their mass percentages in the combination agent are: tributyl phosphate 10wt%, benzohydroxamic acid 50wt% , pyruvic acid 38wt%, terpineol oil 2wt%, under the same flotation conditions, the tin grade in the tin concentrate was 16.85%, and the recovery rate was 76.72%.

Embodiment 2

[0018] The processing object of this embodiment is: a fine-grained tin ore raw ore Sn grade 1.28% in Guangxi, the specific method is: the grinding fineness-0.038mm accounts for 80%, the dosage of each agent is: pH regulator sodium carbonate 1000g / t, inhibit The agent sodium silicate is 1000 g / t, and the collector is benzohydroxamic acid 150 g / t. After a rough separation, the Sn grade in the tin concentrate is 10.78%, and the recovery rate is 73.58%.

[0019] The collector benzohydroxamic acid is replaced by the combined medicament of the present invention (addition amount 150g / t). The raw materials and their mass percentages in the combined medicament are: tributyl phosphate 35wt%, benzohydroxamic acid 10wt %, pyruvic acid 50wt%, pine oil 5wt%, under the same flotation conditions, the tin grade in the tin concentrate was 14.85%, and the recovery rate was 86.72%.

Embodiment 3

[0021] The processing object of the present embodiment is: a fine-grained tin ore raw ore Sn grade in Hunan is 0.75%, and the grinding fineness-0.038mm accounts for 95%. The dosage of each agent is: pH regulator sodium carbonate 2000g / t, inhibitor water glass 2000 g / t, the collector benzohydroxamic acid is 300g / t, after a rough separation, the Sn grade in the tin concentrate is 15.35%, and the recovery rate is 53.18%.

[0022] The collector benzohydroxamic acid is replaced by the combined medicament of the present invention (addition amount 300g / t), and the raw materials and their mass percentages in the combined medicament are: tributyl phosphate 50wt%, benzohydroxamic acid 30wt %, pyruvic acid 10wt%, pine oil 10wt%, under the same flotation conditions, the tin grade in the tin concentrate was 18.02%, and the recovery rate was 70.82%.

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Abstract

The invention discloses a combined reagent for microfine-particle cassiterite flotation and an application method thereof, and belongs to the field of mineral flotation reagents. The combined reagentcomprises the following raw materials in percentage by mass: 10-50 wt% of tributyl phosphate, 10-50 wt% of benzohydroxamic acid, 10-50 wt% of pyruvic acid, and 2-10 wt% of terpenic oil. The combined reagent is mixed according to a certain ratio; through a cooperative effect of the reagent, the cassiterite capturing capacity is improved, and better selectivity is achieved; and compared with a single cassiterite floatation collecting agent, the advantages of low reagent consumption, low cost, normal-temperature dissolution, no poison, high efficiency and environmental protection are achieved, inparticular, the better effect on floatation of microfine-particle cassiterite with particle sizes of 2-38 microns is achieved, and important significance on recycling of tin ore resources is improved.

Description

technical field [0001] The invention relates to a combined agent for flotation of fine-grained cassiterite and a use method thereof, belonging to the field of mineral flotation agents. Background technique [0002] The content of tin in the earth's crust is 0.004%, and the global tin reserves are about 4.8 million tons. In nature, it mainly exists in the form of sulfides, oxides, natural elements, silicates, sulfur salts, intermetallic compounds, hydroxides, borates, etc., and more than 50 tin minerals and tin-containing minerals have been found. Among them, the minerals with industrial value mainly include: cassiterite, cylindrical tin ore, yellow tin ore, stibnite and styroite. Tin mines are mainly distributed in China, Indonesia, Brazil, Bolivia, Russia, Australia and other countries. [0003] my country is rich in tin ore resources, mainly concentrated in Yunnan, Guangxi, Hunan, Inner Mongolia, Guangdong and Jiangxi provinces, among which Gejiu in Yunnan is known as th...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D101/06B03D101/00
CPCB03D1/018B03D2201/02B03D2201/007B03D2201/06
Inventor 罗斌刘全军余力纪慧超江旭
Owner KUNMING UNIV OF SCI & TECH
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