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Method for recovering metal rubidium resources in pyrrhotite tailings

A technology of resource recovery and iron tailings, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of excessive loss, waste of resources, poor treatment effect, etc., and achieve the goal of simplifying recovery steps and improving recovery rate Effect

Inactive Publication Date: 2020-11-24
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most rubidium ore recovery and separation methods are not effective for polymetallic tailings, especially minerals with a considerable content of rare metals; or there is a lot of loss, or impurities are difficult to follow up, resulting in a great waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The grade of rubidium in a pyrrhotite tailings is 0.08%. The results of process mineralogy analysis show that rubidium mainly occurs in potassium feldspar. Rubidium is recovered according to the following steps: (1) After the tailings are crushed until the grinding fineness is less than 0.074 mm (less than 200 mesh) accounting for 70%, superconducting magnetism is used for magnetic separation; (2) The magnetic After dressing the tailings to make a slurry with a concentration of 20%, add sodium carbonate in an amount of 300g / t, add sodium silicate at 400g / t and stir thoroughly for 1 hour, add 30g / t ethyl dithiocarbamate and 20g / t xanthate inflated flotation (3) add sulfuric acid to the above tailings according to the standard of 150g / t, after fully stirring, add alkyl sulfonate according to 50g / t for air flotation. A rubidium concentrate with a grade of 4.58% was obtained.

Embodiment 2

[0021] The grade of rubidium in a pyrrhotite tailings is 0.08%. The results of process mineralogy analysis show that rubidium mainly occurs in potassium feldspar. Rubidium is recovered according to the following steps: (1) After the tailings are crushed until the grinding fineness is less than 0.074 mm (less than 200 mesh) accounting for 80%, superconducting magnetism is used for magnetic separation; (2) The magnetic After dressing the tailings to make a slurry with a concentration of 35%, add sodium carbonate in an amount of 600g / t, add sodium silicate at 800g / t and stir for 2 hours, add 50g / t ethyl disulfide nitrogen and 40g / t xanthate inflated flotation (3) add sulfuric acid to the above tailings according to the standard of 200g / t, after fully stirring, add alkyl sulfonate according to 100g / t for air flotation. A rubidium concentrate with a grade of 5.45% was obtained.

Embodiment 3

[0023] The grade of rubidium in a pyrrhotite tailings is 0.08%. The results of process mineralogy analysis show that rubidium mainly occurs in potassium feldspar. Rubidium is recovered according to the following steps: (1) After the tailings are crushed until the grinding fineness is less than 0.074 mm (less than 200 mesh) accounting for 80%, superconducting magnetism is used for magnetic separation; (2) The magnetic After dressing the tailings to make a slurry with a concentration of 30%, add sodium carbonate in an amount of 500g / t and stir for 2 hours, add 40g / t ethyl dithiocarbamate and 40g / t xanthate for aerated flotation; (3) the above tailings Add sulfuric acid to the ore according to the standard of 150g / t, after fully stirring, add alkylsulfonate according to 50g / t for air flotation. A rubidium concentrate with a grade of 1.03% was obtained.

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Abstract

The invention discloses a method for recovering metal rubidium resources in pyrrhotite tailings. The method comprises the following steps: (1) crushing tailings, and carrying out superconducting magnetic separation; (2) preparing ore pulp from the magnetic separation tailings in the step (1), adding sodium carbonate, fully stirring, adding a flotation agent, and carrying out air flotation; and (3)enabling sulfuric acid to be added into the tailings, after full stirring, enabling a flotation agent to be added for air flotation, and obtaining rubidium concentrate with the relatively high grade.Compared with the prior art, the method has the advantages that the recovery step of the metal rubidium in the tailings is simplified, meanwhile, the recovery rate of the rubidium is improved, and arelatively good preposition step is provided for further industrial purification of the rubidium or the rubidium-containing compound.

Description

technical field [0001] The invention relates to the field of resource recovery, in particular to a method for recovering rubidium metal resources in pyrrhotite tailings. Background technique [0002] Rubidium was first discovered in 1861. It is an alkali metal element in the first group of the periodic table. Because of its large atomic radius and ionic radius, it is easy to lose valence electrons and has lively chemical properties. Rubidium is an extremely important rare and precious metal resource, which is of great economic and strategic significance. [0003] Rubidium has no independent industrial minerals, and it is easy to ion-exchange with potassium in these minerals in an isomorphic manner to form a stable crystal structure. It is often dispersed in silicates such as lepidolite, iron lepidolite, feldspar, and cesium garnet. in minerals. Copper sulfide ore surrounding rocks contain aluminosilicate minerals including mica and feldspar. These minerals are artificially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03C1/30B03D101/06B03D101/00B03D103/02
CPCB03C1/30B03D1/00B03D1/018B03D2201/00B03D2201/06B03D2203/02
Inventor 晏波陈涛蒋少军黄剑程胜段连鑫
Owner SOUTH CHINA NORMAL UNIVERSITY
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