Method for separating rhenium and molybdenum in molybdenum-rhenium ore concentrate

A molybdenum-rhenium and concentrate technology is applied in the field of separating rhenium and molybdenum in molybdenum-rhenium concentrate, which can solve the problems of complicated separation process and large investment, and achieve the effect of simplifying the operation process, reducing the separation load and reducing equipment investment.

Inactive Publication Date: 2012-09-12
陕西炼石矿业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a method for separating rhenium and molybdenum in molybdenum-rhenium concentrate, so as to solve the problems of complex separation process and large investment in the prior art

Method used

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  • Method for separating rhenium and molybdenum in molybdenum-rhenium ore concentrate
  • Method for separating rhenium and molybdenum in molybdenum-rhenium ore concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Dry the molybdenum-rhenium concentrate to 3% water content, granulate and control the particle size to Φ10mm; put the granulated molybdenum-rhenium concentrate particles into the muffle furnace for roasting, and grind the roasted ore until it reaches 80wt% in the grinding slurry after wet grinding The particle size of the solid matter is below 200 mesh, and the mass concentration of the solid matter in the grinding ore slurry is 50%; the mass concentration of the solid matter in the grinding ore slurry is adjusted to be 20%, and the sulfuric acid with a concentration of 10mol / L is added thereto to adjust The pH value of the grinding slurry is between 7 and 8; after 4 hours, filter the above-mentioned grinding slurry to obtain leaching slag containing calcium molybdate and leaching solution containing calcium perrhenate.

[0045] The leaching slag containing calcium molybdate enters the molybdenum smelting system.

[0046] Take 25% of the leaching solution and add sulfur...

Embodiment 2

[0049] Dry the molybdenum-rhenium concentrate to a water content of 3%, granulate, and control the particle size to Φ6mm; put the granulated molybdenum-rhenium concentrate particles into the muffle furnace for roasting, and grind the roasted ore to 80wt% in the grinding slurry after wet grinding The particle size of the solid matter is below 200 mesh, and the mass concentration of the solid matter in the grinding pulp is 40%; the mass concentration of the solid matter in the grinding pulp is adjusted to be 25%, and the sulfuric acid with a concentration of 10mol / L is added thereto to adjust The pH value of the grinding slurry is between 7 and 8; after 6 hours, the above-mentioned grinding slurry is filtered to obtain leaching slag containing calcium molybdate and leaching solution containing calcium perrhenate.

[0050] Calcium molybdate enters the molybdenum smelting system.

[0051] Take 50% of the leaching solution and add sulfuric acid to adjust the pH at 3.0~4.0, then add...

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Abstract

The invention provides a method for separating rhenium and molybdenum in a molybdenum-rhenium ore concentrate, comprising the following steps of: S1, carrying out wet grinding on a roasted ore obtained by lime roast-dissociation of molybdenum-rhenium ore concentrate, so as to obtain ore grinding pulp of which the mass concentration of solid substances is 40-60%; S2, adding acid into the ore grinding pulp to adjust the pH (Potential of Hydrogen) value of the ore grinding pulp to 7-8, so as to obtain a leaching solution containing the rhenium and leaching slag containing the molybdenum; separating the leaching solution from the leaching slag; S3, obtaining rhenium from the leaching solution; and S4, obtaining molybdenum from the leaching slag.. The molybdenum-rhenium ore concentrate and the lime are mixed and roasted to fix molybdenum and rhenium in the roasted ore; the roasted ore is wetly milled into smaller ore grains, which is convenient for subsequent treatment; and the pH value of the wetly-milled ore grinding pulp is adjusted to 7-8 so that molybdenum and rhenium are separated and recycling routes of the molybdenum and the rhenium are separated; an operation process is simplified and the separation load of equipment is reduced, so that equipment investment is reduced.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a method for separating rhenium and molybdenum in molybdenum-rhenium concentrate. Background technique [0002] Rhenium is a rare metal element with an average content of 1×10 in the earth’s crust -7 , Moreover, there is no single rhenium in nature, and rhenium generally appears in the molybdenite lattice in the form of homogeneous phases. Metal rhenium is an excellent engineering material with excellent ductility, formability and carburization resistance, and because of its high temperature resistance, high strength and high resistance value, it is widely used in the aerospace industry, electronic appliances, and instrumentation industries ; Rhenium compounds are also widely used as catalysts in petrochemical industry. Therefore, the extraction of rhenium has great economic and social significance. In molybdenite, molybdenum and rhenium exist together in a homogeneous phase. If ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/04C22B1/02C22B1/00C22B34/34C22B61/00
CPCY02P10/20
Inventor 张政吴海国王琳惠来善姚金江王智友李婕肖超宾智勇易晖余伦王晓云
Owner 陕西炼石矿业有限公司
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