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High efficiency purification method of ammonium tungstate solution with high Mo content by using special resin

A technology of ammonium tungstate and resin, which is applied in the field of high-efficiency purification of ammonium tungstate solution containing high Mo with special resin, can solve the problems of low efficiency, high cost, complicated process, etc., to simplify the process, reduce the process and reduce the production cost Effect

Inactive Publication Date: 2016-09-28
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 order to overcome the shortcomings of low efficiency, complex process and high cost of the method for producing 0-grade APT, the technical problem to be solved by the present invention is to provide a method for efficiently purifying ammonium tungstate solution containing high Mo with special resin

Method used

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  • High efficiency purification method of ammonium tungstate solution with high Mo content by using special resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Implement the experiment:

[0023] ①Sulphurization, WO in ammonium tungstate solution 3 The concentration is 221.68g / L, the Mo concentration is 1.31g / L, and ammonium sulfide is added for vulcanization. 2- 2.57g / L;

[0024] ②Stationary, vulcanization is completed, standing for 120min, filtration, liquid-solid separation, separation liquid collection for the next step, and separation slag collection and recycling;

[0025] ③ Prepare simulated exchange adsorption. The simulated exchange column is a transparent plexiglass simulated exchange column with a specification of Φ5cm×70cm. The filling resin is special resin WDA918. The quality of the filled resin is 467.5g, and the height of the resin layer is 36.5cm;

[0026] ④ Exchange adsorption, pass the separation liquid through the resin layer, the flow rate is controlled at 15mL / min, when the Mo content in the separation liquid passing through the resin layer is ≥ 0.01g / L, stop the exchange (the special resin WDA918 is reg...

Embodiment 2

[0033] Implement the experiment:

[0034] ①Sulphurization, WO in ammonium tungstate solution 3 The concentration is 254.5g / L, the Mo concentration is 4.5g / L, and ammonium sulfide is added for vulcanization. 2- 2.90g / L;

[0035] ②Stationary, vulcanization is completed, standing still for 150min, filtering, liquid-solid separation, separation liquid collection for the next step, and separation slag collection and recycling;

[0036] ③ Prepare simulated exchange adsorption. The simulated exchange column is a transparent plexiglass simulated exchange column with a specification of Φ5cm×70cm. The filling resin is special resin WDA918. The quality of the filled resin is 467.5g, and the height of the resin layer is 36.5cm;

[0037] ④ Exchange adsorption, pass the separation liquid through the resin layer, the flow rate is controlled at 10mL / min, when the Mo content in the separation liquid passing through the resin layer is ≥ 0.01g / L, stop the exchange (the special resin WDA918 is ...

Embodiment 3

[0044] Implement the experiment:

[0045] ①Sulphurization, WO in ammonium tungstate solution 3 The concentration is 168.40g / L, the Mo concentration is 7.0g / L, ammonium sulfide is added for vulcanization, the vulcanization stirring speed is 60r / min, the stirring time is 120min, the reaction temperature is 298K, and the vulcanization end point controls the S in the vulcanization solution. 2- 3.2g / L;

[0046] ②Stationary, vulcanization is completed, standing for 150min, filtering, liquid-solid separation, separation liquid collection for the next step, and separation slag collection and recycling;

[0047] ③ Prepare simulated exchange adsorption. The simulated exchange column is a transparent plexiglass simulated exchange column with a specification of Φ5cm×70cm. The filling resin is special resin WDA918. The quality of the filled resin is 467.5g, and the height of the resin layer is 36.5cm;

[0048] ④ Exchange adsorption, pass the separation liquid through the resin layer, the...

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Abstract

The invention belongs to the field of metallurgy of rare metals, and concretely relates to a high efficiency purification method of an ammonium tungstate solution with high Mo content by using special resin. The invention discloses the high efficiency purification method of the ammonium tungstate solution with high Mo content by using special resin, and disadvantages of low efficiency in the production method of 0 grade APT, complex processes, and high cost. The method comprises the following steps: a. the solution is sulfurated and permitted to stand; b. simulated exchange adsorption and exchange adsorption are prepared; c. desorption and transition are carried out; d. evaporation-crystallization-drying are carried out. The special resin WDA918 is used for high efficiency purification of the ammonium tungstate solution with high Mo content, and the link for removing impurities by copper salts is reduced; compared with the classic purification method of the ammonium tungstate solution with high Mo content including combination of selective precipitation and ion exchange, the links for removing Mo, P, As, Si and other impurities by adding copper sulphate or copper sulphide or copper oxide; the technology is simplified, production cost is reduced, and the recovery rate of WO3 is improved.

Description

technical field [0001] The invention belongs to the field of rare metal metallurgy, and in particular relates to a method for efficiently purifying high Mo-containing ammonium tungstate solutions with special resins. Background technique [0002] my country is rich in tungsten mineral resources. According to statistics, in 2008, my country's tungsten mineral resource reserves were 1.8 million tons, accounting for 60% of the global tungsten mineral resource reserves, and the basic reserves were 4.2 million tons, accounting for 66.66% of the global tungsten mineral resource reserves. . With the country's planning and reliance on the development of the tungsten metallurgical industry, my country's tungsten smelting technology has made considerable progress in the past 20 years. [0003] At present, the classic process of producing APT by tungsten smelting in my country is: grinding - alkali decomposition - batching - ion exchange - impurity removal (selective precipitation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/00
CPCC01G41/003
Inventor 江亲义郭昌平曾斌袁善禧胡俊杰
Owner XINYANG HUARUI MOLYBRENUM NEW MATERIALS CO LTD
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