Comprehensive recovery method for tungsten accompanying fluorite resources

A technology of fluorite and resources, which is applied in the field of simultaneous enrichment of tungsten fluorite mixed flotation-acid leaching to decarbonate calcium-tungsten fluorite efficient separation, comprehensive recovery of associated tungsten fluorite resources, can solve the difficulty of separating calcium-containing minerals, Low recovery rate of tungsten fluorite, difficult flotation recovery and other problems, to achieve the effect of increasing availability, improving comprehensive recovery rate, and reducing beneficiation cost

Active Publication Date: 2016-05-25
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

[0005] In view of the difficulty in separating calcium-containing minerals in the traditional fatty acid tungsten separation process, the traditional process of "floating tungsten first and then floating fluorite" or "floating fluorite first and then floating tungsten" makes it difficult to recover the target minerals in the follow-up section, and the recovery rate of tungsten fluorite is low. etc., the purpose of the present invention is to provide a method for making full use of the similar buoyancy characteristics of calcium-containing minerals to simultaneously enrich tungsten and fluorite, and then efficiently separate tungsten and fluorite. This method can greatly improve The utilization rate of tungsten and fluorite resources, and the process is short, the medicament is simple, the operation is convenient, the labor intensity is low, the energy consumption is low, the environmental protection is efficient, and the mineral processing cost is greatly reduced

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] Utilize this process method to process Shizhuyuan tungsten-tin-molybdenum-bismuth polymetallic ore, the fluorite content is 21%, WO 3 The grade is 0.35%, the calcite content is 11%, and the gangue minerals are mainly garnet, magnetite, quartz, mica, diaspore and so on. After crushing, grinding, iron removal and desulfurization, the raw ore is subjected to mixed flotation of tungsten and fluorite. The pH of the desulfurized tailings is adjusted to 9.0 by sodium carbonate, and 400g / t of combined inhibitors are added (the mass ratio of water glass, baked gelatin, and tannic acid is 10:1:1), stirred for 3 minutes, and then 200g / t of vegetable oleic acid is added. Slurry mixing and stirring for 5 minutes, aerated flotation, and tungsten, fluorite mixed concentrate, CaF 2 The grade is 91.31%, WO 3The grade is 1.31%, the calcite content is 5.11%, the mixed concentrate is acid leached with dilute hydrochloric acid with a mass fraction of 20%, after the underflow is concentrat...

Embodiment 2

[0040] Utilize this process to process Yaogangxian tungsten-tin-molybdenum-bismuth polymetallic ore, the fluorite content is 11%, WO 3 The grade is 0.45%, the calcite content is 7.48%, and the gangue minerals are mainly garnet, magnetite, quartz, mica, diaspore and so on. After crushing, grinding, iron removal and desulfurization, the raw ore is subjected to mixed flotation of tungsten and fluorite. Adjust the pH of the desulfurized tailings to 9.5 with sodium carbonate, add combined inhibitor 300g / t (the mass ratio of water glass, baked gelatin, and tannic acid is 10:1:1), stir for 3 minutes, and then add tallow oleic acid 200g / t, Slurry mixing and stirring for 5 minutes, aerated flotation, and tungsten, fluorite mixed concentrate, CaF 2 The grade is 90.28%, WO 3 The grade is 1.73%, and the calcite content is 4.76%. The mixed concentrate is acid leached with dilute hydrochloric acid with a mass fraction of 30%. Tungsten minerals float up, and the foam product after flotati...

Embodiment 3

[0042] Utilize this process method to process Shizhuyuan Chaishan high-calcium polymetallic ore, the fluorite content is 27%, WO 3 The grade is 0.15%, the calcite content is 21%, and the gangue minerals are mainly garnet, magnetite, quartz, mica, diaspore and so on. After crushing, grinding, iron removal and desulfurization, the raw ore is subjected to mixed flotation of tungsten and fluorite. Adjust the pH of the desulfurized tailings to 8.5 with sodium carbonate, add combined inhibitor 500g / t (the mass ratio of water glass, baked gelatin, and tannic acid is 10:1:1), stir for 3 minutes, and then add ricinoleic acid 500g / t , mixed slurry and stirred for 5 minutes, and aerated flotation was carried out. After the flotation process of "one rough, two sweeps and three fines", the mixed concentrate of tungsten and fluorite was obtained, and CaF 2 Grade 90.51%, WO 3 The grade is 1.01%, and the calcite content is 6.11%. The mixed concentrate is acid leached with dilute hydrochlori...

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Abstract

The invention discloses a comprehensive recovery method for tungsten accompanying fluorite resources. The method comprises the steps that tungsten accompanying fluorite ore is broken and ground and then is subjected to magnetic separation deferrization and flotation desulfuration; the desulfured tailings are subjected to flotation separation I through a combined inhibitor composed of sodium silicate, bake glue and gallotannic acid and a collecting agent fatty acid to obtain tungsten and fluorite bulk concentrate; the bulk concentrate is subjected to flotation separation II through an inhibitor amino phosphonate after being subjected to acid decalcification treatment, the foam product is fluorite concentrate, and the tailings product is tungsten concentrate. By means of the method, the comprehensive recovery rate of tungsten and fluorite resources is greatly improved, the flow is short, the medicament is simple, operation is convenient, the labor intensity is low, energy consumption is low, environmental protection and high efficiency are achieved, and the ore dressing cost is greatly reduced.

Description

technical field [0001] The invention relates to a method for comprehensive recovery of associated tungsten fluorite resources, in particular to a method for synchronous enrichment of tungsten fluorite mixed flotation-acid leaching decarbonation-tungsten fluorite efficient separation method, which belongs to the comprehensive utilization technology of tungsten ore resources field. Background technique [0002] China has maintained an advantage in tungsten ore resources for a long time. In terms of resource utilization types, foreign countries mainly develop and utilize scheelite resources, while my country has mainly developed and utilized wolframite resources for decades. Compared with scheelite, black tungsten Resources have the advantages of easy mining, easy selection, and good quality. However, with the depletion of wolframite resources and the decline of selected grades, it is becoming more and more important to the development and utilization of scheelite, and scheelit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/018B03D1/008B03D1/014B03D101/02B03D101/06B03D103/02
CPCB03D1/008B03D1/014B03D1/018B03D1/02B03D2201/02B03D2201/06B03D2203/02
Inventor 孙伟胡岳华韩海生唐鸿鹄孟祥松刘航穆迎迎
Owner CENT SOUTH UNIV
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