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Method for treating molybdenum blue-containing solution by ion exchange process

An ion exchange method and solution technology, which is applied in the field of ion exchange treatment of molybdenum blue-containing solutions, can solve the problems of slow diffusion and adsorption, and achieve the effects of large adsorption capacity, improved work efficiency, and accelerated diffusion.

Inactive Publication Date: 2011-08-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned earlier, the affinity of molybdenum blue to resin is higher than that of SO 4 2- , Cl - , NO 3 - much larger, but very slow diffusion and adsorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 20L of molybdenum blue feed solution with a molybdenum concentration of 0.2g / L in a tank-type stirred reactor, control the solution temperature at 60°C, and pH 2.0; add D314 wet resin whose dry weight is 4.5 times the molybdenum content of the feed solution Reactor, control the stirring line speed of the outer edge of the stirrer to be 5m / s, stir and adsorb to equilibrium; analyze the molybdenum content in the solution, calculate the adsorption rate of molybdenum to be 99.1%, and the adsorption amount is 220.2mg / g (dry resin) .

Embodiment 2

[0032] Take 10L of molybdenum blue molybdenum material solution with a molybdenum concentration of 6.1g / L in a tank-type stirred reactor, control the solution temperature at 5°C, and pH 6.8; put D363 wet resin whose dry weight is 10.0 times the molybdenum content of the material solution Add the reactor, control the agitator outer edge stirring linear velocity to be 0.5m / s, stir and adsorb to balance; analyze the molybdenum content in the solution, calculate the adsorption rate of molybdenum to be 99.5%, and the adsorption capacity is 99.5mg / g (dry resin).

Embodiment 3

[0034] Take 10L of molybdenum blue feed solution with a molybdenum concentration of 13g / L in a tank-type stirred reactor, control the solution temperature at 25°C, and pH 4.0; add D301 wet resin whose dry weight is 4.0 times the molybdenum content of the feed solution to the reaction device, the outer edge of the agitator is controlled to have a stirring linear velocity of 5m / s, and the stirring is adsorbed to equilibrium; the molybdenum content in the analysis solution is calculated to be 99.3% of the adsorption rate of molybdenum, and the adsorption capacity is 248.3mg / g (dry resin).

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PUM

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Abstract

The invention discloses a method for treating a molybdenum blue-containing solution by an ion exchange process. In the method, macroporous anion exchange resin is contacted with the molybdenum blue-containing solution to adsorb molybdenum blue in a stirred tank reactor; and a desorbing agent is added into the resin after adsorption for desorption. The method is easy to operate and is low in cost, and the reacted resin can be reused.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and in particular relates to a method for treating a solution containing molybdenum blue by an ion exchange method. Background technique [0002] Under acidic conditions, MoO 4 2- Polymerization will occur to form isopolyacids. Molybdenum polyacids (especially when PO 4 3- , AsO 4 2- , SiO 3 2- The heteropolyacid formed when other impurities are present) has strong oxidizing properties, and the molybdenum in the polyacid can be reduced in the presence of a reducing agent to form molybdenum blue [1] . Molybdenum blue is a general term for a series of oxide and hydroxide mixed compounds formed by molybdenum in a mixed valence state, in which the average valence of molybdenum is between 5-6. The appearance of molybdenum blue in the smelting process is a very troublesome problem. For example, the leaching solution obtained by leaching nickel-molybdenum ore with strong alkali oxidation contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/42C22B34/34
CPCY02P10/20
Inventor 赵中伟许晓阳杨亮陈星宇陈爱良刘旭恒
Owner CENT SOUTH UNIV
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