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Method for efficiently leaching wolfram from wolfram-containing mixed material

A technology for mixing materials and tungsten ore, which is applied in the direction of improving process efficiency, can solve the problems of complicated and diverse processes required for separation and complex properties of tungsten-containing materials, and achieves simple leaching operation, suitable for popularization and use, and efficient industrialization. The effect of tungsten extraction

Inactive Publication Date: 2019-04-02
XINYANG HUARUI MOLYBRENUM NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for efficiently leaching tungsten from a tungsten-containing mixture, which aims to solve the technical problems of complex properties of existing tungsten-containing materials and complicated and diverse separation processes; through the The method realizes the efficient leaching of tungsten from various tungsten-containing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This specific embodiment is a process for leaching tungsten from a tungsten-containing mixture, and the specific steps are:

[0025] ① Weigh 100g of dry wolframite (WO 3 content is 66%) and 100g dry tungsten slag (WO 3 content is 9.7%), and crushed so that the particle size of the crushed material -325 mesh accounts for more than 96%, mix it evenly, and press the WO in the mixed material 3 Add 2.5 times of the required theoretical amount of sodium carbonate to the metal amount, stir it evenly, and place it in a stainless steel basin (120mm×60mm×2mm in size).

[0026] ② Turn on the high-temperature muffle furnace, and when the temperature in the high-temperature muffle furnace rises to 700°C, push the stainless steel basin containing the tungsten-containing mixture into the hearth of the high-temperature muffle furnace, roast for 4 hours, and turn it every 5 minutes during the roasting process Once the material in the stainless steel basin is filled with air.

[0027]...

Embodiment 2

[0030] ① Weigh 100g of dry wolframite (WO 3 content of 66%) and 100g of low-grade scheelite (WO 3 content is 23%), and crushed so that the particle size of the crushed material -325 mesh accounts for more than 96%, it is mixed evenly, and according to the WO in the mixed material 3 Add 1 times of the required theoretical amount of sodium hydroxide and 2 times of sodium carbonate, stir it evenly, and place it in a stainless steel basin (size: 120mm×60mm×2mm).

[0031] ② Turn on the high-temperature muffle furnace, and when the temperature in the high-temperature muffle furnace rises to 900°C, push the stainless steel basin containing the tungsten-containing mixture into the hearth of the high-temperature muffle furnace, roast for 3 hours, and turn it every 5 minutes during the roasting process Once the material in the stainless steel basin is filled with air.

[0032] ③Add 900ml of water directly to the roasted material while it is hot, carry out wet grinding and water leachi...

Embodiment 3

[0035] ① Weigh 100g of dry wolframite (WO 3 content is 66%), and 100g spent catalyst (WO 3 content is 5.2%), and crushed so that the particle size of the crushed material -325 mesh accounts for more than 96%, it is mixed evenly, and according to the WO in the mixed material 3 Add 2 times of the required theoretical amount of sodium carbonate and 0.5 times of sodium chloride, stir it evenly, and place it in a stainless steel basin (120mm×60mm×2mm in size).

[0036] ② Turn on the high-temperature muffle furnace, and when the temperature in the high-temperature muffle furnace rises to 1000°C, push the stainless steel basin containing the tungsten-containing mixture into the hearth of the high-temperature muffle furnace, roast for 2 hours, and turn it every 5 minutes during the roasting process Once the material in the stainless steel basin is filled with air.

[0037] ③ Add 1000ml of water directly to the roasted material while it is hot, carry out wet grinding and water leachi...

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Abstract

The invention discloses a method for efficiently leaching wolfram from a wolfram-containing mixed material. The method aims to solve the technical problems that the properties of existing wolfram-containing materials are complicated, and various complicated processes are needed for separation. The method includes the specific steps that any one or two or more materials among wolframite and scheelite mixed wolfram ore, wolframite, wolfram slag and a dead catalyst are obtained and mixed uniformly, any one or two or more materials among sodium carbonate, sodium chloride and sodium hydroxide are added, and uniform stirring is performed; a mixed material is roasted, the roasting temperature and roasting time are controlled, the roasting air-rich atmosphere is guaranteed, and stirring is continuously performed in the roasting process; a roasted material is directly subjected to wet grinding and water leaching while the material is hot, stirring is performed through rotary vanes in the wet grinding process, and leached liquid is obtained; and the obtained leached liquid is filtered, filtered slag is washed with hot water, and then a wolfram-containing solution is obtained. Through the method, the effect that the wolfram is efficiently leached from various wolfram-containing materials is achieved.

Description

technical field [0001] The invention belongs to the technical field of efficient extraction of nonferrous metal resources, and in particular relates to a method for efficiently leaching tungsten from a tungsten-containing mixture. Background technique [0002] Tungsten is a non-ferrous metal. It is not only the refractory metal with the highest melting point, but also has very high strength and hardness. Because of this characteristic, tungsten carbide with high hardness and strong wear resistance is widely used Cutting tools, mining tools. [0003] Today, tungsten smelting technology has undergone earth-shaking changes in the past 20 years, especially with the joint efforts of Chinese researchers, technological breakthroughs have been made in multiple directions. Among them, the high-concentration sodium hydroxide decomposition technology of scheelite developed by the team of Professor Zhao Zhongwei of Central South University solved the major problem of difficult decompos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B3/04C22B34/36
CPCC22B1/02C22B3/04C22B34/36Y02P10/20
Inventor 江亲义曾斌陈昌延胡俊杰胡亦发
Owner XINYANG HUARUI MOLYBRENUM NEW MATERIALS CO LTD
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