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Comprehensive utilization and production method for treating two wastes

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

Active Publication Date: 2014-11-19
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 treating secondary waste, including a comprehensive utilization production method for treating aluminum sludge with a brand name of HW17 and waste sulfuric acid or waste hydrochloric acid with a brand name of HW34;

[0025] In this example, the brand HW17 aluminum sludge with a water content of 72% is dried and desorbed by hot air. The hot air drying temperature is 45-60 ° C, and the drying time is 12-15 hours; after the desorption is completed, the water content is 8.6%, 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 7.8;

[0026] Add the tri(octyl-decyl)alkyl tertiary amine extractant to the waste sulfuric acid or hydrochloric acid of the brand HW34 for 3 times, the ratio of each addition is 0.6:1, and the extraction time is 3 minutes each time;

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

Embodiment 2

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

[0033] In this example, the brand HW17 aluminum sludge with a water content of 73% is dried and desorbed by hot air. The hot air drying temperature is 60°C and the drying time is 12-15 hours; after the desorption is completed, the water content is 9.6%. , solid aluminum sludge with an aluminum content of 99%, and the acidity value of the solid aluminum-containing sludge after desorption is controlled to 4-5;

[0034] Add the tri(octyl-decyl)alkyl tertiary amine extractant to the waste sulfuric acid or waste hydrochloric acid of the brand HW34 for 3 times, the ratio of each addition is 0.6: 1.2, and the extraction time is 5 minutes each time;

[0035] Put 0.6 tons of treated waste sulfuric acid or waste hydro...

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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 secondary waste, which belongs to the field of waste treatment and reuse production. Background technique [0002] my country is a big producer of aluminum alloys. Aluminum sludge in aluminum alloy oxidation pools (HW17) is one of the most difficult problems to deal with in the industry. The normal treatment methods are accumulation and landfill. The same chemical plants, capacitor plants, electroplating plants, etc. The leftovers in the process flow have a concentration of 15% to 20% waste salt (sulfuric) acid (HW34) and there is no good treatment method for recycling. [0003] Polyaluminum chloride, also known as aluminum hydroxychloride, is an intermediate polymer compound between aluminum trichloride hexahydrate and aluminum hydroxide. Since pure polyaluminum chloride is a polymer formed by hydroxyl bridging polymerization Therefore, it is very soluble in water and can un...

Claims

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Application Information

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