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Method for recycling molybdenum from waste slag of catalyst

A catalyst and waste slag technology, applied in the field of molybdenum recovery, can solve problems such as waste of resources, and achieve the effects of high recovery rate, saving mineral resources, and simple process flow

Inactive Publication Date: 2017-07-04
SICHUAN DONGYU INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of chemical industry, the alumina-based catalyst waste residue contains a lot of molybdenum, but it is basically not recycled at present, resulting in a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: A kind of method of reclaiming molybdenum from catalyst waste residue of the present invention comprises the following steps: A, adding sodium hydroxide and sodium carbonate solution to alumina-based catalyst waste residue and mixing uniformly; B, grinding the mixed material Slurry is heated and then solid-liquid separation is carried out to obtain a sodium aluminate-sodium molybdate mixed solution; C, using resin to absorb molybdenum in the sodium aluminate-sodium molybdate mixed solution to obtain a molybdenum solution; D, adding a molybdenum solution to the molybdenum solution Calcium molybdate was precipitated after adding calcium chloride. The concentration of sodium hydroxide solution in the step A is 0.3mol / L. The concentration of sodium hydroxide solution in the described step A is 0.6mol / L.

Embodiment 2

[0012] Embodiment 2: a kind of method of the present invention reclaims molybdenum from catalyst waste slag, comprises the following steps: A, add sodium hydroxide and sodium carbonate solution and mix uniformly in alumina-based catalyst waste slag; B, grind the material after mixing Slurry is heated and then solid-liquid separation is carried out to obtain a sodium aluminate-sodium molybdate mixed solution; C, using resin to absorb molybdenum in the sodium aluminate-sodium molybdate mixed solution to obtain a molybdenum solution; D, adding a molybdenum solution to the molybdenum solution Calcium molybdate was precipitated after adding calcium chloride. The concentration of sodium hydroxide solution in the step A is 0.8mol / L. The concentration of sodium hydroxide solution in the described step A is 0.4mol / L.

Embodiment 3

[0013] Embodiment 3: a kind of method of the present invention reclaims molybdenum from catalyst waste slag, comprises the following steps: A, add sodium hydroxide and sodium carbonate solution and mix uniformly in alumina-based catalyst waste slag; B, grind the material after mixing Slurry is heated and then solid-liquid separation is carried out to obtain a sodium aluminate-sodium molybdate mixed solution; C, using resin to absorb molybdenum in the sodium aluminate-sodium molybdate mixed solution to obtain a molybdenum solution; D, adding a molybdenum solution to the molybdenum solution Calcium molybdate was precipitated after adding calcium chloride. The concentration of sodium hydroxide solution in the step A is 0.5mol / L. The concentration of sodium hydroxide solution in the described step A is 0.5mol / L.

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Abstract

The invention discloses a method for recycling molybdenum from waste slag of a catalyst. The method includes the following steps that A, a sodium hydroxide solution and a sodium carbonate solution are added into the waste slag of the aluminum-oxide-based catalyst and are mixed uniformly; B, after the mixed material is ground into slurry and heated, solid-liquid separation is performed, and a sodium aluminate-sodium molybdate mixed solution is obtained; C, molybdenum in the sodium aluminate-sodium molybdate mixed solution is adsorbed through resin to obtain a molybdenum solution; and D, after calcium chloride is added into the molybdenum solution, calcium molybdate is obtained through precipitation. According to the method for recycling the molybdenum from the waste slag of the catalyst, the molybdenum is recycled from the waste slag of the aluminum-oxide-based catalyst through an analytical method, the technological process is simple, the equipment cost is low, the recycling rate is high, secondary utilization of the industrial waste slag is effectively achieved, valuable mineral resources are saved, and the remarkable progressive significance is achieved.

Description

technical field [0001] The invention relates to a method for recovering molybdenum, in particular to a method for recovering molybdenum from catalyst waste residue. Background technique [0002] With the large-scale mining of molybdenum ore, the current molybdenum resources are quite scarce, so how to efficiently recover molybdenum is particularly important. In the field of chemical industry, the alumina-based catalyst waste residue contains more molybdenum components, but it is basically not recycled at present, resulting in a great waste of resources. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for recovering molybdenum in alumina-based catalyst waste residue with simple process and effective recovery. [0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: [0005] A method for recovering molybdenum from catalyst waste slag, compri...

Claims

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Application Information

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IPC IPC(8): C22B34/34C22B7/00
CPCC22B7/008C22B34/345Y02P10/20
Inventor 李成
Owner SICHUAN DONGYU INFORMATION TECH
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