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Method for deeply removing soluble components of industrial waste residues

A technology for removal of industrial waste slag, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve problems such as incomplete dissolution and complete separation, and achieve hydrolysis or dissolution, low energy consumption, and improved The effect of removal efficiency

Active Publication Date: 2020-07-03
浙江美臣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the soluble components of the existing industrial waste residues cannot be fully dissolved and completely separated during the washing process, the present invention further provides a method for deeply removing the soluble components of industrial waste residues

Method used

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  • Method for deeply removing soluble components of industrial waste residues

Examples

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Effect test

Embodiment 1

[0025] This embodiment relates to a deep removal treatment method for soluble components of domestic waste incineration fly ash, which is specifically divided into the following steps:

[0026] Step 1. Add 50 kg of sodium silicate to water, stir at 20°C for 10 minutes at high speed, the speed of high speed stirring is 300r / min, and control the pH value of the solution to 10;

[0027] Step 2, add 150 kilograms of domestic waste incineration fly ash and 450 kilograms of water to the solution in step 1, and mix to form a suspension;

[0028] Step 3: Add 3 kg of aluminum powder to the suspension, and stir at 80°C for 30 minutes at a low speed of 50 r / min;

[0029] Step 4: Filter and dry the suspension in Step 3 to obtain domestic waste incineration fly ash after removal of soluble components.

Embodiment 2

[0031] This embodiment relates to a deep removal treatment method for soluble components of aluminum ash, which is specifically divided into the following steps:

[0032] Step 1. Add 30 kg of silicon dioxide to water, stir at 40°C for 30 minutes at high speed, the speed of high speed stirring is 400r / min, and control the pH value of the solution to 11;

[0033] Step 2, add 150 kilograms of aluminum ash and 750 kilograms of water to the solution of step 1, and mix to form a suspension;

[0034] Step 3: Add 1.25 kg of hydrogen peroxide into the suspension, and stir at 70°C for 65 minutes at a low speed of 150 r / min;

[0035] Step 4: Filter the suspension in Step 3 and dry to obtain aluminum ash after removing soluble components.

Embodiment 3

[0037] This embodiment relates to a deep removal treatment method for soluble components of salt-containing waste residue, which is specifically divided into the following steps:

[0038] Step 1. Add 30 kg of methyl silicate to water, stir at 30°C for 20 minutes at high speed, the speed of high speed stirring is 350r / min, and control the pH value of the solution to 12;

[0039] Step 2, add 140 kilograms of saline waste residue and 560 kilograms of water to the solution of step 1, and mix to form a suspension;

[0040] Step 3: Add 1.25 kg of hydrogen peroxide into the suspension, and stir at 60°C for 60 minutes at a low speed of 100 r / min;

[0041] Step 4: Filter and dry the suspension in Step 3 to obtain salt-containing waste residue after removal of soluble components.

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Abstract

The invention relates to a method for deeply removing soluble components of industrial waste residues. The method is characterized by comprising the following steps that first, a silicon-containing agent is added into water, stirring is conducted at a high speed of 20-40 DEG C for 10 -30 minutes, and the pH value of a solution is controlled to be 10-12; second, the solution of the step 1 is addedinto a mixed solution of the industrial waste residues and water to form a suspension; third, aluminum powder or hydrogen peroxide are added into the suspension, and stirring is conducted at 40-80 DEGC for 30-75 minutes; and fourth, filtering and drying are conducted on the suspension in the step 3 to obtain the soluble-components removed industrial waste residues. The method is wide in application range and applicable to pretreatment of industrial solid wastes such as sulfur-containing waste residues, domestic garbage incineration fly ash, aluminum ash, salt-containing waste residues, electroplating sludge or nitrogen-containing waste residues, and the obtained residues can be used for civil engineering and building auxiliary materials and other resource utilization routes, and is helpful for comprehensive utilization of the waste residues.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for deeply removing soluble components of industrial waste residues. Background technique [0002] Waste slag wet treatment is a common method to promote the reaction of solid phase components and then separate them from waste slag. In the process of wet treatment, components such as Al, Fe, and Ca in industrial waste slag form hydroxides in water to wrap on the surface of the waste slag, which makes the waste slag agglomerate and prevents water from entering the waste slag, resulting in the incomplete separation of the pre-separated components. Removal, resulting in waste residue that is not conducive to subsequent utilization or treatment. The existing common methods are heating, rapid stirring, multi-stage washing and ultrasonic stirring. The processing steps are cumbersome, the reaction time is long; heating is required, and energy cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00B09B2101/30
Inventor 钱光人周吉峙
Owner 浙江美臣新材料科技有限公司
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