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A method for preparing composite aluminum sulfate by utilizing aluminum-containing waste slag

A technology of composite sulfuric acid and aluminum waste slag, which is applied in chemical instruments and methods, solid waste removal, water/sludge/sewage treatment, etc., can solve problems such as destroying the ecological environment, and achieve the goal of covering a large area and reducing production costs Effect

Active Publication Date: 2018-06-26
宁波顺帆净水剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the aluminum profile processing industry, inorganic acid treatment is commonly used to remove oxides on the surface. A large amount of aluminum-containing waste residue will be generated during the surface pickling process. If it is discharged directly, it will seriously damage the ecological environment.

Method used

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  • A method for preparing composite aluminum sulfate by utilizing aluminum-containing waste slag
  • A method for preparing composite aluminum sulfate by utilizing aluminum-containing waste slag

Examples

Experimental program
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Effect test

Embodiment 1

[0018] 1) Put 9 parts of dilute sulfuric acid, 11 parts of aluminum-containing waste residue, 13 parts of water, and 0.005 part of rare earth oxide in the reactor, and carry out acidolysis reaction under normal pressure for 3 hours to obtain aluminum sulfate-containing solution A ;

[0019] 2) filtering the solution A to remove undissolved impurities to obtain a clear solution B;

[0020] 3) adjusting the pH value of the solution B to 0.7 to obtain an acidic solution C;

[0021] 4) Add 15 parts of zeolite to the solution C, place it on a magnetic stirrer and stir it sufficiently for 2 hours to obtain a turbid solution D containing zeolite;

[0022] 5) Evaporating the water in the cloudy liquid D completely to obtain a solid mixture E.

[0023] Solid mixture E is exactly aluminum sulfate complex.

Embodiment 2

[0025] 1) Put 13 parts of dilute sulfuric acid, 15 parts of aluminum-containing waste residue, 17 parts of water, and 0.005 parts of rare earth oxides in a reaction kettle, and carry out acidolysis reaction under normal pressure. The reaction time is 4 hours, and aluminum sulfate solution A is obtained. ;

[0026] 2) filtering the solution A to remove undissolved impurities to obtain a clear solution B;

[0027] 3) adjusting the pH value of the solution B to 0.8 to obtain an acidic solution C;

[0028] 4) Add 30 parts of zeolite to the solution C, place it on a magnetic stirrer and stir it fully for 3 hours to obtain a turbid solution D containing zeolite;

[0029] 5) Evaporating the water in the cloudy liquid D completely to obtain a solid mixture E.

[0030] Solid mixture E is exactly aluminum sulfate complex.

Embodiment 3

[0032] 1) Put 10 parts of dilute sulfuric acid, 13 parts of waste residue containing 10% aluminum, 15 parts of water, and 0.005 part of rare earth oxide in a reaction kettle, and carry out acidolysis reaction under normal pressure, and the reaction time is 3 hours to obtain Containing aluminum sulfate solution A;

[0033] 2) filtering the solution A to remove undissolved impurities to obtain a clear solution B;

[0034] 3) adjusting the pH value of the solution B to 0.9 to obtain an acidic solution C;

[0035] 4) Add 15-30 parts of zeolite to the solution C, place it on a magnetic stirrer and stir it fully for 2 hours to obtain a cloudy solution D containing zeolite;

[0036] 5) Evaporating the water in the cloudy liquid D completely to obtain a solid mixture E.

[0037] Solid mixture E is exactly aluminum sulfate complex.

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Abstract

The invention provides a method for preparing composite aluminum sulfate by using aluminum-containing waste slag, comprising the following steps: (1) 9-13 parts of dilute sulfuric acid, 11-15 parts of aluminum-containing waste slag, 13-17 parts of water, 0.005 parts The rare earth oxide is placed in the reactor and reacted for 3-4h to obtain a solution A containing aluminum sulfate; (2) filter the solution A to obtain a clear solution B; (3) adjust the pH value of the solution B to 0.7-1.0, Obtain an acidic solution C; (4) add 15-30 parts of zeolite in the solution C, fully stir for 2-3h to obtain a turbid liquid D containing zeolite; (5) completely evaporate the moisture in the turbid liquid D, A solid mixture E is obtained. The invention converts aluminum-containing waste slag into composite aluminum sulfate, and the prepared composite aluminum sulfate has good flocculation effect and high water purification ability.

Description

technical field [0001] The invention relates to the field of industrial waste treatment of aluminum profiles, in particular to a method for preparing liquid aluminum sulfate by using aluminum-containing waste residue. Background technique [0002] In the aluminum profile processing industry, inorganic acid treatment is commonly used to remove oxides on the surface. A large amount of aluminum-containing waste residue will be generated during the surface pickling process. If it is discharged directly, it will seriously damage the ecological environment. Therefore, converting industrial waste into useful resources has always been a problem that aluminum profile companies need to solve. [0003] The task of the present invention is to seek a method for converting aluminum-containing waste slag produced by the aluminum profile processing industry into useful resources in order to overcome the above-mentioned shortcomings. [0004] In view of the above-mentioned defects, the crea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/42B09B3/00
CPCC02F1/42C02F1/5245B09B3/80
Inventor 张德明舒莉萍
Owner 宁波顺帆净水剂有限公司
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