Method of recycling molybdenum and rhenium from molybdenum concentrate by hydrometallurgy

A technology for hydrometallurgy and molybdenum concentrate, which is applied in the direction of improving process efficiency to achieve the effects of improving pH value, excellent separation effect and high recovery rate

Inactive Publication Date: 2014-06-18
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some colleges and universities also have some reports on rhenium, but very few, and the rhenium content of many molybdenum ores needs to be analyzed and verified

Method used

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  • Method of recycling molybdenum and rhenium from molybdenum concentrate by hydrometallurgy

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Experimental program
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Embodiment 1

[0041] In the molybdenum concentrate to be processed in this embodiment, the mass percentage of molybdenum is 55%, and the mass percentage of rhenium is 0.04%. Combine figure 1 In this embodiment, the method of hydrometallurgical recovery of molybdenum and rhenium from molybdenum concentrate includes the following steps:

[0042] Step 1: Mix molybdenum concentrate and deionized water evenly according to a solid-liquid ratio of 1:10 to obtain a slurry;

[0043] Step 2. Under an oxygen atmosphere, use a high-pressure reactor to perform pressure oxidation treatment on the pulp described in Step 1. The temperature of the pressure oxidation treatment is 180°C, and the time of the pressure oxidation treatment is 2 hours. The pressure of the pressure oxidation treatment is 0.6MPa; after the pressure oxidation treatment, the molybdenum concentrate is mainly oxidized into molybdenum trioxide and transferred to the solid phase, and part of the molybdenum exists in the form of molybdate and ...

Embodiment 2

[0057] In the molybdenum concentrate to be processed in this embodiment, the mass percentage of molybdenum is 45%, and the mass percentage of rhenium is 0.02%. Combine figure 1 In this embodiment, the method of hydrometallurgical recovery of molybdenum and rhenium from molybdenum concentrate includes the following steps:

[0058] Step 1: Mix molybdenum concentrate and deionized water evenly according to a solid-liquid ratio of 1:10 to obtain a slurry;

[0059] Step 2. Under an oxygen atmosphere, use an autoclave to perform pressure oxidation treatment on the pulp described in step 1, the temperature of the pressure oxidation treatment is 200°C, and the time of the pressure oxidation treatment is 1.5h, so The pressure of the pressure oxidation treatment is 0.7 MPa; after the pressure oxidation treatment, the molybdenum concentrate is mainly oxidized into molybdenum trioxide and transferred into the solid phase, and part of the molybdenum exists in the form of molybdate and transfer...

Embodiment 3

[0073] In the molybdenum concentrate to be processed in this embodiment, the mass percentage of molybdenum is 57%, and the mass percentage of rhenium is 0.04%. Combine figure 1 In this embodiment, the method of hydrometallurgical recovery of molybdenum and rhenium from molybdenum concentrate includes the following steps:

[0074] Step 1. Mix the molybdenum concentrate and deionized water evenly according to the solid-liquid ratio of 1:12 to obtain a slurry;

[0075] Step 2. Under an oxygen atmosphere, use a high-pressure reactor to perform pressure oxidation treatment on the pulp described in Step 1. The temperature of the pressure oxidation treatment is 180°C, and the time of the pressure oxidation treatment is 2 hours. The pressure of the pressure oxidation treatment is 0.5MPa; after the pressure oxidation treatment, the molybdenum concentrate is mainly oxidized into molybdenum trioxide and transferred to the solid phase, and part of the molybdenum exists in the form of molybdat...

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Abstract

The invention provides a method of recycling molybdenum and rhenium from molybdenum concentrate by hydrometallurgy. The method comprises the following steps: I, mixing molybdenum concentrate powder with deionized water to prepare ore pulp; II, carrying out pressurizing oxidization treatment onto the ore pulp; III, filtering to obtain a filter cake and filtrate; and IV, respectively treating the filter cake and the filtrate: drying the filter cake to obtain industrial molybdenum oxide; carrying out precipitation and impurity removal, active carbon adsorption and solid-liquid separation treatment onto the filtrate in sequence, crystallizing the filtrate treated by solid-liquid separation to obtain ammonium molybdate, and desorbing and crystallizing rhenium on the active carbon treated by the solid-liquid separation to obtain ammonium perrhenate. The method disclosed by the invention is simple in process, strong in repeatability, high in recovery rate of the molybdenum and the rhenium and suitable for large-scale industrial production.

Description

Technical field [0001] The invention belongs to the technical field of hydrometallurgy, and specifically relates to a method for hydrometallurgical recovery of molybdenum and rhenium from molybdenum concentrate. Background technique [0002] Since the 1970s, many complete hydrometallurgical processes for molybdenite have been developed at home and abroad. The more mature ones are nitric acid oxidation decomposition process, oxygen pressure oxidation process (POX) and sodium hypochlorite decomposition process. Now biological oxidation processes are also emerging. Reports. Pressurized oxidation hydrometallurgy has developed rapidly due to its short process flow, high metal recovery rate, strong adaptability to different types of raw materials, and environmental friendliness. Since the appearance of the pressurized oxidation hydrometallurgical technology, many internationally renowned mining companies such as AMAX, KENNECOTT and other companies in the United States continue to pay ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/34C22B61/00C22B3/24C22B3/46C22B3/04
CPCY02P10/20
Inventor 曹亮李来平蒋丽娟张新刘燕李延超杨健
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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