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Method for reducing calcium ions and magnesium ions in electrolytic manganese qualified solution

A technology for electrolytic manganese qualified solution, calcium and magnesium ions, applied in the direction of electrolysis process, electrolysis components, process efficiency improvement, etc., to avoid low production efficiency, easy large-scale production, and low production and operation cost.

Active Publication Date: 2018-09-11
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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  • Method for reducing calcium ions 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 ions and magnesium ions in an electrolytic manganese qualified solution, and belongs to the technical field of metallurgy through an electrolyticmanganese metal wet method. The pH value of the electrolytic manganese qualified solution is adjusted, and an extraction organic phase is prepared; the extraction organic phase is subjected to saponification through alkalin liquor to obtain a sodium soap organic phase, and the sodium soap organic phase is subjected to manganese soaping through a manganese sulfate solution to obtain a manganese soap organic phase; the obtained manganese soap organic phase is used as an extraction agent, and the electrolytic manganese qualified solution subjected to pH adjustment is used as extraction liquid for extraction to obtain an organic phase loaded with the metal ions of the calcium ions and the magnesium ions and a deeply-purified electrolytic manganese qualified solution; the obtained organic phase loaded with the metal ions of the calcium ions and the magnesium ions is subjected to manganese washing through a dilute manganese sulfate solution, and then sulfate reverse extraction is adopted toobtain a regenerative extraction organic phase and a water phase loaded with the metal ions of the calcium ions and the magnesium ions, wherein the regenerative extraction organic phase can be recycled. By means of the method, removing of the calcium ions and the magnesium ions with high concentrations in the electrolytic manganese qualified solution can be effectively achieved, meanwhile, loss of manganese ions is avoided, and moreover, impurity ions such as F<-> are not introduced.

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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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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