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Method for producing chemical raw materials by comprehensively utilizing manganese slag

A technology of chemical raw materials and manganese slag, applied in the direction of silicon oxide, manganese sulfate, silicon dioxide, etc., can solve the problems of waste of available resources, secondary pollution of the environment, etc., and achieve the effect of reducing secondary pollution

Active Publication Date: 2014-09-03
山西升佳化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, no matter whether the manganese slag is used in agriculture or construction, the valuable elements in the manganese slag have not been comprehensively utilized, resulting in the waste of a large amount of available resources and the secondary pollution of the environment

Method used

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  • Method for producing chemical raw materials by comprehensively utilizing manganese slag

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Effect test

Embodiment 1

[0025] refer to figure 1 , the method for the comprehensive utilization of manganese slag described in the present embodiment to produce chemical raw materials, comprises the following steps:

[0026] 1. Reaction: first crush the manganese slag to 80 mesh, then mix it with ammonium fluoride solution with a concentration of 10%, place it in the main reactor and heat it for 0.5 hours, and the reaction temperature is 80°C; the manganese slag and fluoride The ammonium solution is mixed in a ratio of 1:8 according to the mass volume ratio; after the reaction, solid-liquid separation is obtained to obtain solid A and liquid A;

[0027] 2. Absorption: the gas generated in the reaction process described in step 1 is absorbed through a tube-and-tube heat exchanger to obtain liquid B;

[0028] 3. Neutralization: Mix liquid A, liquid B and sodium hydroxide solution according to the mass volume ratio of 1:0.5:0.1, and react fully at 50°C to obtain a white carbon black suspension; solid-...

Embodiment 2

[0032] refer to figure 1 , the method for the comprehensive utilization of manganese slag described in the present embodiment to produce chemical raw materials, comprises the following steps:

[0033] 1. Reaction: first crush the manganese slag to 150 mesh, then mix it with 20% ammonium fluoride solution, place it in the main reactor and heat it for 1.5 hours at a reaction temperature of 90°C; the manganese slag and fluoride The ammonium solution is mixed according to the mass volume ratio of 1: 4; after the reaction, solid-liquid separation is obtained to obtain solid A and liquid A;

[0034] 2. Absorption: the gas produced in the reaction process described in step 1 is absorbed through a packed absorption tower to obtain liquid B;

[0035] 3. Neutralization: Mix liquid A, liquid B and sodium hydroxide solution according to the mass volume ratio of 1:1:0.5, and react fully at 70°C to obtain a white carbon black suspension; solid-liquid Separation to obtain white carbon bla...

Embodiment 3

[0039] refer to figure 1 , the method for the comprehensive utilization of manganese slag described in the present embodiment to produce chemical raw materials, comprises the following steps:

[0040] 1. Reaction: first crush the manganese slag to 200 mesh, then mix it with a 35% ammonium fluoride solution, place it in the main reactor and heat it for 2.5 hours at a reaction temperature of 110°C; the manganese slag and fluoride The ammonium solution is mixed according to the mass volume ratio of 1: 0.2; solid-liquid separation after the reaction, to obtain solid A and liquid A;

[0041] 2. Absorption: the gas generated in the reaction process described in step 1 is absorbed through a spray absorption tower to obtain liquid B;

[0042] 3. Neutralization: Mix liquid A, liquid B and sodium hydroxide solution according to the mass volume ratio of 1:2:1, and react fully at 90°C to obtain a white carbon black suspension; solid-liquid Separation to obtain white carbon black and li...

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Abstract

The invention relates to an industrial waste slag comprehensive utilization method, particularly a method for producing chemical raw materials by comprehensively utilizing manganese slag. A chemical process is adopted to decompose the manganese slag; reaction, absorption, neutralization, release, crystallization and other steps are utilized to effectively extract valuable elements in the manganese slag; and the valuable elements are comprehensively utilized to produce basic chemical raw materials, thereby changing wastes into valuable substances and greatly reducing the secondary environmental pollution caused by manganese slag.

Description

technical field [0001] The invention relates to a method for comprehensive utilization of industrial waste residues, in particular to a method for comprehensive utilization of manganese residues to produce chemical raw materials. Background technique [0002] In the prior art, the methods for extracting manganese element from manganese ore mainly include acid leaching and flue gas desulfurization. Among them, the acid leaching method mainly uses sulfuric acid to leach manganese in manganese ore, and a large amount of waste residue containing silicon, aluminum, and manganese is produced after leaching; the flue gas desulfurization method uses sulfur-containing waste gas discharged from power plants and manganese ore pulp Carrying out the reaction to produce manganese sulfate will also produce a large amount of waste residue containing valuable elements such as silicon, aluminum, and manganese. [0003] At present, the utilization of manganese slag in my country is mainly con...

Claims

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Application Information

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IPC IPC(8): C01B33/12C01G45/10C01G49/02C01F7/02
Inventor 杨晓红薛希仕
Owner 山西升佳化工有限公司
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