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Fluorite mineral flotation method

A technology of fluorite ore and slurry, which is applied in the field of flotation separation of fluorite ore, can solve the problems of separating fluorite and other minerals, and achieve the effect of good quality concentrate products, good recovery rate of fluorite, and wide application range

Active Publication Date: 2013-02-13
LONGQUAN FLUOSPAR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For complex fluorspar minerals and flotation tailings containing fluorspar, there is no more effective method to efficiently separate fluorspar from other minerals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The Zhejiang Longquan fluorite tailings were selected as the raw ore of the present invention, and the multi-element chemical composition analysis of the ore sample is shown in Table 1.

[0024] Table 1 Chemical composition of ore (%)

[0025] Component Ca CaF 2 CaO BaO MgO SiO 2 Al 2 o 3 K 2 o Na 2 o content 20.27 30.12 2.38 0.26 0.18 49.50 3.47 1.64 0.076 Component TF FeO Fe 2 o 3 MnO S P C F Ig content 1.27 0.30 2.38 0.07 0.08 0.028 0.14 17.69 5.96

[0026] The specific treatment process of the present invention is as follows: feed the ore mill to less than 200 mesh, account for 60%, the concentration of the pulp is 30%, add 1400g / t sodium carbonate to adjust the pH of the pulp to 8.5, add water glass, the coarse selection amount is 400g / t, and stir for 3 minutes ; Add composite collector (oleic acid: dimethylformamide = 4:1.5) 400g / t, stir for 3 minutes, and float for 6 minute...

Embodiment 2

[0028] The Hengkengping fluorite ore mined in Suichang, Zhejiang is selected as the raw ore of the present invention. The multi-element chemical composition analysis of the raw ore is shown in Table 2. In this ore, the CaO content is relatively high, reaching 4.39%, which belongs to the fluorite ore of high calcium carbonate. The present invention is compared with conventional collector oleic acid.

[0029] Table 2 Chemical composition of ore (%)

[0030] Component Ca CaF 2 CaO BaO MgO SiO 2 al 2 o 3 K 2 o Na 2 o content 22.17 37.12 4.39 0.16 0.47 44.32 3.26 1.28 0.190 Component TF FeO Fe 2 o 3 MnO S P C F Ig content 0.85 0.06 1.15 0.16 0.02 0.011 0.68 18.08 6.80

[0031]The specific process of the present invention is as follows: feed the ore mill to less than 200 meshes and account for 70%, the concentration of the pulp is 30%, add 500g / t sodium carbonate to adjust the pH of the pulp t...

Embodiment 3

[0033] Select Zhejiang Wuyi flotation tailings (containing 29.06% CaF 2 , the main useful minerals are fluorite, the gangue minerals are mainly quartz, and there are calcite and a small amount of sericite, iron, and a small amount of sulfide-pyrite). Due to the unsuccessful flotation process, they were forced to Long-term stockpiling. Grinding the ore to less than 200 mesh accounts for 56.06%, and the concentration of the pulp is 30%. Add 1000g / t sodium carbonate to adjust the pH of the pulp to 7.5, and add a composition (water glass: sodium fluoride = 4:1) as a regulator. 1000g / t, stirring for 3 minutes; adding composite collector (oleic acid: dimethylformamide = 4:1.5) 400g / t, stirring for 3 minutes, flotation at room temperature (20~35°C) for 6 minutes; The resulting foam product is reground to less than 400 mesh, accounting for 76.18%; the first selection plus combined inhibitor 800 g / t, the second selection starts to add combined inhibitor 400 g / t, and the selected middl...

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Abstract

The invention discloses a fluorite mineral flotation method. A flotation process of one-segment rough flotation plus scavenging and seven-segment fine flotation is matched with adoption of inhibitors formed by combination of water glass and sodium fluoride, and collecting agents formed by compounding of fatty acid and dimethyl formamide. In the flotation process, fluorites and other minerals in common fluorite minerals, complex fluorite minerals, flotation tailings containing the fluorites, and the like can be effectively separated, and obtained fluorite concentrate products are good in quality and have few impurities. The fluorite mineral flotation method is especially applicable to flotation separation of a large quantity of low-grade fluorite minerals with higher carbonate content, can be used for reducing the content of the impurities in beneficiation products, and has enormous economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to a mineral separation process, in particular to a flotation separation method for fluorite ore. Background technique [0002] Fluorite is a strategic mineral, which plays an important role in the economic development of a country, and is widely distributed all over the world. It has been used as one of the advantageous mineral products for foreign exchange earning in my country for a long time. It has a wide range of uses and can be used In metallurgy, chemical industry, ceramics, cement, glass and other industries. [0003] The general characteristics of my country's fluorite mineral resources are more lean ore, less rich ore, more difficult ore, less easy ore, more symbiotic ore, and less single ore. Over the years, my country's mineral processing equipment has been backward, and the technical level is low. The extraction rate of non-metallic minerals is only 20-40%, which is 10-20% lower than that of the same industry in the ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/002B03D1/01B03B1/00B03D101/02B03D101/06
Inventor 宋英金火荣周金城胡向明
Owner LONGQUAN FLUOSPAR
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