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Special additive for electrolytic manganese metal and preparation method thereof

A technology for electrolytic metal manganese and additives, applied in the field of electrolytic metal manganese production, can solve the problems of high electrolytic energy consumption, harsh production conditions, self-toxicity, etc., and achieve the effects of simple preparation process, clear and transparent appearance, and stable properties.

Inactive Publication Date: 2012-09-26
湘西自治州三泰精细化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of selenium dioxide additive is strong anti-impurity ability, high current efficiency (70%); The disadvantage is that it is itself toxic, the price is high, the selenium content is high in the electrolytic metal manganese products produced, and the use is limited
The advantage of sulfur dioxide additive is that the price is low, and the electrolytic metal manganese produced has high purity; the disadvantage is that the ability to resist impurities is weak, the production conditions are harsh, and the current efficiency is low (60%)
The above-mentioned patented products are produced by Luxi County Xibang Technology Co., Ltd. and have been introduced to the market in recent years. However, due to the two shortcomings of high electrolysis energy consumption and inability to carry out selenium-free electrolysis for a long time, they have not yet been accepted by electrolytic manganese production enterprises. Product sales are poor

Method used

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  • Special additive for electrolytic manganese metal and preparation method thereof
  • Special additive for electrolytic manganese metal and preparation method thereof
  • Special additive for electrolytic manganese metal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A special additive for electrolytic manganese, the percentage by weight of each raw material is shown in Table 1.

[0028] Table 1

[0029]

[0030] The above-mentioned preparation method for the special additive for electrolytic manganese comprises the following steps:

[0031] 1 Selection of raw materials: select each raw material according to Table 1:

[0032] 2. First add water to the reactor and heat it to 50-60°C, then add sodium styrene sulfonate, stir for 30 minutes until the sodium styrene sulfonate is completely dissolved, cool to room temperature, then add hydrazine hydrate and thiodiglycol, Stir evenly to obtain the special additive for electrolytic manganese (additive No. 1).

[0033] The prepared additive No. 1 was used in the production of electrolytic manganese, and a comparative test was carried out on the 5000t / a electrolytic manganese production line with that of completely using selenium dioxide. The technical indicators were as follows: qualifi...

Embodiment 2

[0037] A special additive for electrolytic manganese, the weight percentage of each raw material is shown in Table 3.

[0038] table 3

[0039] name

Weight (g)

Weight percentage content (%)

Remark

Hydrazine hydrate

8

8

40％

Thiodiglycol

14

14

98％

Sodium propyne sulfonate

30

30

25% (liquid)

water

48

48

Deionized water

[0040] The above-mentioned preparation method for the special additive for electrolytic manganese comprises the following steps:

[0041] 1 Selection of raw materials: select each raw material according to Table 3:

[0042] 2. Add water, hydrazine hydrate, thiodiglycol, and sodium propyne sulfonate to the reaction kettle in sequence, and stir evenly to obtain the special additive for electrolytic manganese (additive No. 2).

[0043] The prepared additive No. 2 was used in electrolytic manganese production, and a comparative test was car...

Embodiment 3

[0047] A special additive for electrolytic manganese production, the weight percentage of each raw material is shown in Table 5.

[0048] table 5

[0049]

[0050] Above-mentioned a kind of preparation method that is used for the special additive of electrolytic manganese production comprises the following steps:

[0051] 1. Selection of raw materials: select each raw material according to Table 5:

[0052] 2. Add water, hydrazine hydrate, thiodiglycol, and sodium vinylsulfonate to the reaction kettle in sequence, and stir evenly to obtain a special additive for electrolytic manganese (additive No. 3).

[0053] The prepared additive No. 3 was used in the production of electrolytic manganese, and a comparative test was carried out with selenium dioxide on a 5000t / a electrolytic manganese production line. The technical indicators were as follows: qualified liquid: manganese content 32-36g / l, ammonium sulfate content 80-100g / l, selenium dioxide content 8-12mg / l, pH value 6.4...

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Abstract

The invention relates to a special additive for electrolytic manganese metal and a preparation method thereof. The special additive for the electrolytic manganese metal disclosed by the invention is prepared from hydrazine hydrate, thiodiglycol, luminescence agent and water. The special additive disclosed by the invention is used for the currently universal production process of electrolytic manganese, the change in production process or the addition of any devices is not needed, the dosage of selenium dioxide can be reduced by 50%, the current efficiency achieves 70%, the recovery rate of Mn<2+> in an electrolyte is about 90%, and the quality of the electrolytic manganese is superior to that of a product by totally using the selenium dioxide.

Description

technical field [0001] The invention relates to the field of electrolytic manganese production, in particular to a special additive for electrolytic manganese and a preparation method thereof. Background technique [0002] my country is the world's largest producer and consumer of electrolytic manganese metal. In 2011, my country's electrolytic manganese metal production capacity reached 2.5 million tons, output reached 1.43 million tons, and domestic consumption exceeded 1 million tons. At present, selenium dioxide is generally used as an additive in the production of general-purpose electrolytic manganese in my country, and sulfur dioxide is used in the production of high-purity electrolytic manganese. The advantage of the selenium dioxide additive is that it has strong impurity resistance and high current efficiency (70%); its disadvantages are its own toxicity, high price, high selenium content in the produced electrolytic metal manganese products, and limited use. The ...

Claims

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Application Information

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IPC IPC(8): C25C1/10
Inventor 马远宏姚茂君
Owner 湘西自治州三泰精细化工有限责任公司
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