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Method for preparing ultra-fine active white carbon black by using manganese leached slag and manganese electrolysis waste acid

A technology for leaching slag and electrolytic manganese, which is applied in the direction of silicon dioxide and silicon oxide, can solve the problems of low yield, small particle size and low tensile strength requirements, and improve quality and added value. The effect of reducing the diameter, improving the crosslink density and mechanical properties

Active Publication Date: 2011-10-26
DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent ZL200610035724.5 has reported that white bauxite waste slag with less impurities is used to prepare activated white carbon black, but its silica is mainly used in the field of rubber that does not require high tensile strength and low yield
So far, there has been no superfine reactive white powder with small particle size, easy dispersion in rubber system, high tensile strength of rubber and high added value, using brown manganese leaching residue with more impurities and electrolytic manganese waste acid as main raw materials. carbon black reports

Method used

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  • Method for preparing ultra-fine active white carbon black by using manganese leached slag and manganese electrolysis waste acid
  • Method for preparing ultra-fine active white carbon black by using manganese leached slag and manganese electrolysis waste acid

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation of particle active agent: (following examples are the same)

[0028] 1.2 mol of carbon disulfide, 1.2 mol of 20% sodium hydroxide aqueous solution and 0.1 mol of amino-terminated hyperbranched polyester (300 g) powder are uniformly mixed, stirred and reacted at 40° C. for 6 hours, then cooled for crystallization and filtered. Obtain sodium dithiocarbamate solid powder 336g, similar way can obtain potassium dithiocarbamate solid powder.

[0029] Preparation of ultrafine activated white carbon black:

[0030] (1) Wash 100 g of manganese leaching residue with 350 g of 0.10 wt % dilute sulfuric acid aqueous solution and 300 g of 0.10 wt % sodium hydroxide aqueous solution, and then wash with tap water until neutral;

[0031] (2) React the filter residue and 300 g of 41wt% sodium hydroxide solution at about 121° C. for 5 hours, filter, and wash the filter residue with distilled water to neutrality, and merge the washing solution into the filtrate, and collec...

Embodiment 2

[0036] (1) Wash 100 g of manganese leaching residue with 320 g of 0.12 wt % dilute sulfuric acid aqueous solution and 350 g of 0.07 wt % sodium hydroxide aqueous solution in turn, and then wash with tap water until neutral;

[0037] (2) React the filter residue and 200 g of 55 wt% sodium hydroxide solution at about 130° C. for 3 h, filter, and wash the filter residue with distilled water until neutral, and merge the washing liquid into the filtrate, and collect the filtrate;

[0038] (3) The filtrate obtained in step (2) was decolorized with 0.8 g of amino-terminated hyperbranched polyester and 1.0 g of polyacrylamide with a number average molecular weight of 1,000,000 g / mol or more at about 60°C for 5 minutes to obtain a light yellow to colored silicate aqueous solution;

[0039] (4) Take 1,000g of electrolytic manganese waste acid solution, decolorize it with 1.0g of activated carbon at about 95°C for 5 minutes, then use 0.15g of amino-terminated hyperbranched polyester at a...

Embodiment 3

[0042] (1) Wash 100 g of manganese leaching residue with 300 g of 0.15 wt % dilute sulfuric acid aqueous solution and 330 g of 0.05 wt % sodium hydroxide aqueous solution, and then wash with tap water until neutral;

[0043] (2) React the filter residue and 250 g of 45 wt % potassium hydroxide solution at about 125° C. for 2 h, filter, and wash the filter residue with distilled water until neutral, and merge the washing liquid into the filtrate, and collect the filtrate;

[0044] (3) The filtrate obtained in step (2) is decolorized with 1.0 g of amino-terminated hyperbranched polyester and 0.8 g of polyacrylamide with a number-average molecular weight of 1,000,000 g / mol or more at about 80 ° C for 5 min, respectively, to obtain light yellow to colored silicate aqueous solution;

[0045] (4) Take 1000g of electrolytic manganese waste acid solution, decolorize it with 1.5g of activated carbon at about 100°C for 5min, then use 0.10g of amino-terminated hyperbranched polyester at ...

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Abstract

The invention relates to a method for preparing ultra-fine active white carbon black by using manganese leached slag and manganese electrolysis waste acid. According to the invention, first, manganese leached slag is washed and neutralized by diluted acid and alkaline aqueous solution; the obtained filter residue strong alkaline solution is reacted and filtered, such that a filtrate is obtained; the filtrate is sequentially decolorized by using amino-terminated hyperbranched polyester and polyacrylamide with a number-average molar mass above 1000000 g / mol, such that a decolorized silicate aqueous solution is obtained; a particle activator is added to the solution, then decolorized manganese electrolysis waste acid is dropped to the solution; the obtained solution is reheated, reacted, filtered, washed, and dried, such that white carbon black is obtained. According to the present invention, white carbon black with a high added value can be produced by using waste slag and waste liquid discharged from a manganese mine enterprise, such that environment protection and comprehensive utilization of resources can be realized. The method also has advantages of simple technology, low cost,high added value, and is suitability for industrialized productions.

Description

technical field [0001] The invention relates to the field of recovery and reuse of industrial waste slag and waste liquid, in particular to a method for preparing ultrafine activated white carbon black by using manganese leaching slag and electrolytic manganese waste acid. Background technique [0002] Manganese is a raw material for the production of steel and stainless steel. Driven by the continuous growth of steel production, my country's demand for manganese ore continues to rise. As the world's largest producer of manganese-based ferroalloys, China produced 7.45 million tons of manganese-based alloys in 2008. my country is a country rich in manganese ore resources, but the average grade of manganese ore is low, and 93.6% of the manganese ore reserves in the country belong to poor manganese ore. According to statistics, every ton of manganese produced by electrolysis will produce 6-7 tons of manganese leaching slag and a large amount of waste acid. Moreover, with the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
Inventor 张道洪李维健李廷成詹海青张爱清刘春明杜冬云黎贵亮李金林刘作泳农桂银邓永光王晶刘栋柱叶恒朋陈南雄张丽云韦慷
Owner DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND
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