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A production method for comprehensive utilization of secondary waste

A technology of production method and treatment method, which is applied in the direction of aluminum chloride, aluminum halide, etc., can solve the problems of complicated production process and many auxiliary additives, and achieve the effects of good product fluidity, improved raw material utilization rate, and improved reaction effect

Active Publication Date: 2016-04-27
NANTONG KECHUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, waste aluminum-containing raw materials and waste hydrochloric acid, sulfuric acid and other inorganic strong acids have been used as production raw materials, realizing the dual functions of protecting resources and protecting the environment, but the production process is relatively complicated, and other auxiliary materials for production There are many additives, which cannot really achieve effective energy saving and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A comprehensive utilization production method for processing secondary wastes, including a comprehensive utilization production method for processing aluminum sludge with the brand HW17 and waste sulfuric acid or waste hydrochloric acid with the brand HW34;

[0025] In this example, the HW17 aluminum sludge with a water content of 72% was desorbed by hot air drying. The hot air drying temperature was 45-60°C and the drying time was 12-15h; after the desorption was completed, the water content was 8.6%, the solid aluminum-containing sludge with an aluminum content of 98-99%, the acidity value of the solid aluminum-containing sludge after desorption is controlled to be 7.8;

[0026] Add three (octyl-decyl) alkyl tertiary amine extractants to the waste sulfuric acid or waste hydrochloric acid of the brand HW34, respectively, with a ratio of 0.6:1 each time, and an extraction time of 3 minutes each time;

[0027] Put the treated 0.5 tons of HW34 waste sulfuric acid or waste hydroc...

Embodiment 2

[0032] A comprehensive utilization production method for processing secondary wastes, including a comprehensive utilization production method for processing aluminum sludge with the brand HW17 and waste sulfuric acid or waste hydrochloric acid with the brand HW34;

[0033] In this example, the HW17 aluminum sludge with 73% moisture content was desorbed by hot air drying. The hot air drying temperature was 60°C and the drying time was 12-15h; after the desorption was completed, the moisture content was 9.6% , Solid aluminum sludge with 99% aluminum content, control the acidity value of the solid aluminum-containing sludge after desorption to 4-5;

[0034] Add three (octyl-decyl) alkyl tertiary amine extractant to the waste sulfuric acid or waste hydrochloric acid of the brand HW34, respectively, with a ratio of 0.6:1.2 each time, and an extraction time of 5 minutes each;

[0035] Put the treated 0.6 tons of HW34 waste sulfuric acid or waste hydrochloric acid into a reactor with a ther...

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Abstract

The invention discloses a comprehensive utilization and production method for treating two wastes. The comprehensive utilization and production method particularly treats HW17 branded aluminum sludge and HW34 branded waste sulfuric acid or waste hydrochloric acid; the comprehensive utilization and production method for treating the two wastes comprises the following steps: the HW17 branded aluminum sludge is dried and desorbed through hot air; after the desorption, the aluminum sludge becomes aluminum sludge in a solid state; the acidity value of the desorbed solid aluminum sludge is controlled to be within 7.8-8.2; tri(octyl-decyl) alkyl tertiary amine extraction agents are added to the waste sulfuric acid or the waste hydrochloric acid respectively; treated waste sulfuric acid or treated waste hydrochloric acid is placed into a reaction kettle with a heat-insulating clamp sleeve; then, treated solid aluminum sludge is slowly added; after a hybrid reaction, the poly aluminum chloride is obtained; then, through sequential spray drying and water film dust removing, pure poly aluminum chloride is obtained. According to the comprehensive utilization and production method for treating the two wastes, pretreated waste aluminiferous raw materials, waste hydrochloric acid and sulfuric acid are taken as raw materials; double functions of resource conservation and environment protection are realized; moreover, the effective energy conservation and environmental protection are realized in the true sense.

Description

Technical field [0001] The invention relates to a production method for comprehensive utilization of two wastes, belonging to the field of waste treatment and reuse production. Background technique [0002] my country is a big country producing aluminum alloys. Aluminum sludge in the aluminum oxidation pond (HW17) is one of the most difficult problems in the industry. The normal treatment method is accumulation, landfill, and the same chemical plants, capacitor plants, electroplating plants and other factories. The waste salt (sulfur) acid (HW34) concentration of the process flow is 15%-20%, and there is currently no good treatment method for treatment and recovery. [0003] Polyaluminum chloride, also known as aluminum hydroxychloride, is an intermediate polymer compound between hexahydrate aluminum trichloride and aluminum hydroxide. Because pure clear polyaluminum chloride is polymerized through hydroxyl bridges The compound is very soluble in water and can be hydrolyzed to prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/56
Inventor 佘友德
Owner NANTONG KECHUN CHEM