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Dissociation method of barite and gangue ores

A technology for gangue minerals and barite tailings, which is applied in the field of dissociation of barite and gangue minerals, can solve the problem that barite is difficult to activate, the experimental process is complicated, and fluorite concentrate is difficult to reach acid-grade fluorite standards. and other problems, to achieve the effect of high concentrate grade and no chemical pollution.

Inactive Publication Date: 2016-09-07
CENT SOUTH UNIV
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Problems solved by technology

Because this method can obtain qualified fluorite-barite concentrate at the same time, it is widely used in industrial production, but the experimental process is relatively complicated; the second type is to suppress barite and preferentially float fluorite
High-quality honey stone concentrate can be obtained by this method, but the suppressed barite cannot be recycled because it is difficult to activate
The third category is to suppress fluorite and preferentially float barite. This method has a relatively simple process and can obtain qualified barite concentrate, but it is difficult for fluorite concentrate to meet the acid-grade fluorite standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a polymetallic symbiotic fluorite deposit in Laibin City, Guangxi Province (main mineral composition: barite mass ratio 56%, fluorite mass ratio 20%), barite and fluorite are closely symbiotic. The ore is crushed to a particle size of 15~12mm by a jaw crusher, roasted at 120°C for 60 minutes by a rotary kiln, and then ground by a ball mill to -0.074mm, accounting for 60%. Spar concentrates and barite tailings. The grade of barite concentrate reaches 98%, and the recovery rate of barite is 90%.

Embodiment 2

[0023] A carbonate barite deposit in Hengyang City, Hunan Province (main mineral composition: barite 60%, fluorite 21%), barite and fluorite are closely symbiotic. The ore is crushed to a particle size of 15~12mm by a cone crusher, roasted at 200°C for 40 minutes by a rotary furnace, and then ground by a rod mill to -0.074mm, accounting for 80%, and the grinding product is obtained by re-election using a spiral chute Barite concentrate and barite tailings. The grade of barite concentrate reaches 95%, and the recovery rate of barite is 95%.

Embodiment 3

[0025] A carbonate barite deposit in Chenzhou City, Hunan Province (main mineral composition: barite 56%, fluorite 18%), barite and fluorite are closely symbiotic. The ore is crushed by a cone crusher to a particle size of 15~12mm, roasted in a tunnel kiln at 300°C for 30 minutes, and then ground by a rod mill to -0.074mm, accounting for 80%, and the grinding product is obtained by gravity separation using jig equipment Barite concentrate and barite tailings. The grade of barite concentrate reaches 96%, and the recovery rate of barite is 97%.

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PUM

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Abstract

The invention relates to a dissociation method of barite and gangue ores. According to the dissociation method, barite ores are grinded at first and then calcined at a temperature of 120 to 300 DEG C; and finally processed ores are grinded and screened for another time to obtain barite concentrate and barite tailings. Through calcining, fluorite ores in barite and gangue are fully dissociated; the grade of obtained barite concentrate is high, the content of barite can reach 95% or more; during the dissociation process of barite and gangue ores, no any chemical reagent is added, chemical-free sorting is realized, and the barite concentrate will not be polluted by chemical reagents.

Description

technical field [0001] The invention belongs to the field of mineral processing engineering, and in particular relates to a dissociation method of barite and gangue minerals. Background technique [0002] In my country, there are many barite mines with poor ore and few rich mines. More than 80% of the barite deposits with proven reserves are associated with other minerals, especially with fluorite ore. In carbonate and polymetallic symbiotic fluorite deposits, barite and fluorite have a close symbiotic relationship and are difficult to dissociate. [0003] Li Mingfeng pointed out in the "Experimental Research on Flotation Separation of Fluorite and Barite" that at present, the separation of fluorite and barite usually adopts flotation process. The process is roughly divided into three categories: At present, the separation of fluorite and barite usually adopts flotation process. The process can be roughly divided into three categories: the first category is to first suppre...

Claims

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Application Information

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IPC IPC(8): C01F11/46
CPCC01F11/462C01P2006/80
Inventor 刘三军姚文明岳琦覃文庆王军刘维张雁生焦芬
Owner CENT SOUTH UNIV
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