A method for reducing calcium and magnesium ions in electrolytic manganese qualified solution

A technology of electrolytic manganese qualified liquid and calcium and magnesium ions, applied in the field of electrolytic manganese metal hydrometallurgy, to achieve low production and operation costs, obvious removal effect, and avoid low production efficiency

Active Publication Date: 2020-09-29
贵州武陵锰业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively solve the removal of high-concentration calcium and magnesium ions in the electrolytic manganese qualified solution without causing the loss of manganese ions, and does not introduce F - Other impurity ions

Method used

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  • A method for reducing calcium and magnesium ions in electrolytic manganese qualified solution

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Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the method for reducing calcium and magnesium ions in the electrolytic manganese qualified solution, its specific steps include:

[0025] Step 1: Step 1.1, adjust the pH value of the qualified electrolytic manganese solution: adjust the pH value of the qualified electrolytic manganese solution to 2 with 2mol / L sulfuric acid solution, and add the electrolytic manganese anolyte (that is, the electrolytic manganese anolyte, including Mn 2+ 15g / L, Mg 2+ 17g / L, H 2 SO 4 36g / L), the pH-adjusted electrolytic manganese qualified solution includes Mn 2+ 32g / L, Ca 2+ 800mg / L, Mg 2+ The concentration is 38g / L, (NH 4 ) 2 SO 4 130g / L;

[0026] Step 1.2, configure the extraction organic phase: the extraction organic phase is composed of extractant and 260# sulfonated kerosene, the extractant is a combined extractant of P507 and Cyanex272 with a volume ratio of 3:2, and the combined extractant is diluted to this level with 260# sulfonated kerosene ...

Embodiment 2

[0034] Such as figure 1 As shown, the method for reducing calcium and magnesium ions in the electrolytic manganese qualified solution, its specific steps include:

[0035] Step 1: Step 1.1, adjust the pH value of the qualified electrolytic manganese solution: adjust the pH value of the qualified electrolytic manganese solution to 3 with 2mol / L sulfuric acid solution, and add the electrolytic manganese anolyte (that is, the electrolytic manganese anolyte, including Mn 2+ 15g / L, Mg 2+ 17g / L, H 2 SO 4 36g / L), the pH-adjusted electrolytic manganese qualified solution includes Mn 2+ 22g / L, Ca 2+ 400mg / L, Mg 2+ The concentration is 15g / L, (NH 4 ) 2 SO 4 110g / L;

[0036] Step 1.2, configure the extraction organic phase: the extraction organic phase is composed of extractant and 260# sulfonated kerosene, the extractant is a combined extractant of P507 and Cyanex272 with a volume ratio of 3:2, and the combined extractant is diluted to this level with 260# sulfonated kerosene ...

Embodiment 3

[0044] Such as figure 1 As shown, the method for reducing calcium and magnesium ions in the electrolytic manganese qualified solution, its specific steps include:

[0045] Step 1: Step 1.1, adjust the pH value of the qualified electrolytic manganese solution: adjust the pH value of the qualified electrolytic manganese solution to 4 with 2mol / L sulfuric acid solution, and add the electrolytic manganese anolyte (that is, the electrolytic manganese anolyte, including Mn 2+ 15g / L, Mg 2+ 17g / L, H 2 SO 4 36g / L), the pH-adjusted electrolytic manganese qualified solution includes Mn 2+ 20g / L, Ca 2+ 200mg / L, Mg 2+ The concentration is 10g / L, (NH 4 ) 2 SO 4 100g / L;

[0046] Step 1.2, configure the extraction organic phase: the extraction organic phase is composed of extractant and 260# sulfonated kerosene, the extractant is a combined extractant of P507 and Cyanex272 with a volume ratio of 3:2, and the combined extractant is diluted to this level with 260# sulfonated kerosene ...

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Abstract

The invention relates to a method for reducing calcium and magnesium ions in electrolytic manganese qualified liquid, and belongs to the technical field of electrolytic manganese metal hydrometallurgy. Adjust the pH value of the electrolytic manganese qualified solution, and configure the extraction organic phase; the extraction organic phase is saponified with lye to obtain the sodium soap organic phase, and the sodium soap organic phase is subjected to manganese sulfate solution to obtain the manganese soap organic phase; to obtain the manganese soap organic phase The phase is the extractant, and the qualified electrolytic manganese solution with adjusted pH is used as the extraction solution to extract the organic phase loaded with calcium and magnesium metal ions and the qualified electrolytic manganese solution with deep purification; the obtained organic phase loaded with calcium and magnesium metal ions is treated with dilute sulfuric acid The manganese solution is used to wash the manganese, and then back-extracted with sulfuric acid to obtain a regenerated extracted organic phase and an aqueous phase loaded with calcium and magnesium metal ions, and the regenerated extracted organic phase can be recycled. This method can effectively solve the removal of high-concentration calcium and magnesium ions in the electrolytic manganese qualified solution without causing the loss of manganese ions, and does not introduce F ‑ and other impurity ions.

Description

technical field [0001] The invention relates to a method for reducing calcium and magnesium ions in electrolytic manganese qualified liquid, and belongs to the technical field of electrolytic manganese metal hydrometallurgy. Background technique [0002] At present, the process flow of electrolytic manganese metal production includes: acid leaching of manganese carbonate ore powder → oxidation, neutralization and iron removal → sulfide precipitation of heavy metal → qualified manganese electrolytic solution → electrolysis → metal manganese. Calcium and magnesium in manganese ore enter the electrolyte during the leaching process. Since magnesium ions are rarely discharged in the subsequent purification and electrolysis steps, they are continuously enriched during the electrolytic production cycle, and the content of magnesium sulfate in the electrolyte is greatly increased. At the same time, there is also a small amount of calcium ions, which brings certain difficulties to el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B47/00C22B3/26C25C7/06C25C1/10
CPCC22B47/00C25C1/10C25C7/06C22B3/34Y02P10/20
Inventor 常军秦林石维贾福康曹树宗
Owner 贵州武陵锰业有限公司
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