Method for producing electrolytic manganese metal by lixiviating sinter ore by adding ferrous sulphate in replacement of manganese carbonate ore

A technology of electrolytic manganese metal and ferrous sulfate, which is applied in the field of electrolytic manganese metal, can solve the problems of high production cost of manganese carbonate ore and unstable ore source, and achieve the effect of eliminating invalid labor time, improving the working environment and reducing the amount of ore input

Inactive Publication Date: 2011-07-13
CITIC JINZHOU METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high production cost and unstable ore source using manganese carbonate ore, the following technical scheme is proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method for producing electrolytic metal manganese by leaching sintered ore with ferrous sulfate instead of manganese carbonate ore is as follows:

[0030] (1) In the leaching stage, first inject 170M into the leaching tank 3 Anolyte, after stirring for 10 minutes, analyze Mn 2+ , H + , Suppose the anolyte content Mn 2+ :14g / L, H + :35g / L, (NH 4 ) 2 SO 4 : 110g / L.

[0031] (2) Calculate the weight of sulfuric acid and sintered ore powder that needs to be input according to the content of the anolyte and the formula of the amount of various raw materials added. Here the target manganese content is 35g / l, the weight ratio of the two ore (ferrous sulfate: sinter) is controlled at 0.7, and the acid-ore ratio is controlled at 0.73. As a result, 1.32 tons of sulfuric acid (98% concentration) and 9.92 tons of sinter (∑Mn48 %, ΣFe6.4%), 6.944 tons of ferrous sulfate.

[0032] (3) Add the calculated sulfuric acid from the sulfuric acid metering tank to the leaching tank. At this ti...

Embodiment 2

[0040] The method for producing electrolytic metal manganese by leaching sintered ore with ferrous sulfate instead of manganese carbonate ore is as follows:

[0041] (1) In the leaching stage, first inject 170M into the leaching tank 3 Anolyte, after stirring for 10 minutes, analyze Mn 2+ , H + , Suppose the anolyte content Mn 2+ :14g / L, H + :35g / L, (NH 4 ) 2 SO 4 :110g / L.

[0042] (2) Calculate the weight of sulfuric acid and sintered ore powder to be input based on the content. The target manganese is 38g / l, the weight ratio of the two ore (ferrous sulfate: sinter) is controlled at 0.8, and the acid-ore ratio is controlled at 0.8. 2.81 tons (98% concentration), 10.88 tons of sintered ore (ΣMn50%, ΣFe6.4%), and 8.704 tons of ferrous sulfate.

[0043] The following steps are the same as in Example 1.

Embodiment 3

[0045] The method for producing electrolytic metal manganese by leaching sintered ore with ferrous sulfate instead of manganese carbonate ore is as follows:

[0046] (1) In the leaching stage, first inject 170M into the leaching tank 3 Anolyte, after stirring for 10 minutes, analyze Mn 2+ , H + , Suppose the anolyte content Mn 2+ :14g / L, H + :35g / L, (NH 4 ) 2 SO 4 :110g / L.

[0047] (2) Calculate the weight of sulfuric acid and sintered ore powder that need to be input according to the content. The target manganese is 30g / l, the weight ratio of the two ore (ferrous sulfate: sinter) is controlled at 0.6, and the acid-ore ratio is controlled at 0.6. The calculation result here is : No need to add sulfuric acid to meet the requirements, 8.06 tons of sintered ore (ΣMn45%, ΣFe6.4%), 4.836 tons of ferrous sulfate.

[0048] The following steps are the same as in Example 1.

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Abstract

The invention discloses a method for producing electrolytic manganese metal by lixiviating sinter ore by adding ferrous sulphate in replacement of manganese carbonate ore. The method comprises the working procedures of lixiviation and oxidation, neutralization, filtration, purification, electrolyzation and the like, and is characterized in that the process of lixiviation and oxidation is implemented by injecting anolyte enough to lead the material to react into the lixiviation vessel, adding concentrated sulfuric acid, adding sinter ore and finally adding ferrous sulphate for lixiviation for 3-4 hours at 70-75 DEG C; adding ammonia water immediately when Fe2+ in the feed liquid is less than or equal to 0.001g / l so as to carry out neutralization, testing the pH value of the feed liquid several times during the process of neutralization, and stopping adding ammonia water when full-valent Fe up to standard is less than or equal to 0.001g / l and the pH value reaches 6.8-7.2. The invention can reduce production cost, and solve the difficulty in purchasing manganese carbonate ore. The sinter ore contains high grade manganese, therefore, ore input quantity is small, and correspondingly the slag quantity and fee liquid carried away by the slag are little. No carbon dioxide gas is exhausted during lixiviation with sinter ore as raw material, thus working environment is improved.

Description

Technical field: [0001] The invention belongs to the technical field of electrolytic manganese metal, and particularly relates to a method for producing electrolytic manganese by using sintered ore and ferrous sulfate instead of manganese carbonate ore to prepare a manganese sulfate solution. Background technique: [0002] In the production process of electrolytic manganese metal, there are mainly the following methods. One is to use manganese oxide ore as a raw material, roasting and reducing, and then undergoing acid leaching, and deep purification to prepare a pure manganese salt solution for electrolytic production. Obtain high-purity electrolytic manganese metal; the other is manganese carbonate ore as a raw material, and then undergo acid leaching, oxidation, iron removal and deep purification to obtain a pure manganese salt solution, which is used for electrolysis to obtain high-purity electrolytic manganese metal. It uses manganese-containing waste as raw materials, under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B47/00C22B3/06
Inventor 齐牧崔传海于晓玲张玉驰王云来王文田凯陈悦李昆鹏
Owner CITIC JINZHOU METAL
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