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Co-processing method for metal-containing hazardous waste and cyanidation tailings

A technology for cyaniding tailings and hazardous waste, applied in crucible furnaces, electric furnaces, rotary drum furnaces, etc., can solve the problems of metal-containing wastes and cyanide tailings without efficient, safe and thorough treatment methods, and achieve low treatment costs , high level of automation, cost-saving effect

Active Publication Date: 2022-05-06
莱阳市裕铭环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a co-processing method for metal-containing hazardous waste and cyanide tailings, which solves the problem that there is no efficient, safe and thorough treatment method for metal-containing waste and cyanide tailings

Method used

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  • Co-processing method for metal-containing hazardous waste and cyanidation tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the embodiment of the present invention provides a method for co-processing metal-containing hazardous waste and cyanide tailings, which specifically includes the following steps:

[0036] S1. Drying

[0037] Unpack the metal-containing hazardous waste stored in tons of bags in the material preparation warehouse, and send it to the first dryer for drying. The cyanide tailings are stacked in bulk, and send the cyanide tailings to the second dryer for drying. After drying, they are transported To their respective pits, take multiple batches of samples to test the drying effect, see Table 1 for the moisture after drying;

[0038] Table 1 Moisture after drying (w / %)

[0039] batch 1 2 3 4 5 6 7 average Metal Containing Hazardous Waste 28.12 29.25 28.51 28.33 29.36 28.95 29.56 28.87 Cyanide tailings 18.25 16.69 17.23 18.48 18.56 18.23 18.42 17.98

[0040] S2. Compatibility

[0041] 1). Compatible...

Embodiment 2

[0056] An embodiment of the present invention provides a method for co-processing metal-containing hazardous waste and cyanide tailings, which specifically includes the following steps:

[0057] S1. Drying

[0058] Unpack the metal-containing hazardous waste stored in tons of bags in the material preparation warehouse, and send it to the first dryer for drying. The cyanide tailings are stacked in bulk, and send the cyanide tailings to the second dryer for drying. After drying, they are transported To the respective pits, take multiple batches of samples to test the drying effect, the moisture after drying is shown in Table 5;

[0059] Table 5 Moisture after drying (w / %)

[0060] batch 1 2 3 4 5 6 7 average Metal Containing Hazardous Waste 29.32 28.36 28.49 28.44 29.55 29.95 29.96 29.15 Cyanide tailings 19.35 19.67 16.73 16.59 17.86 17.73 18.96 18.13

[0061] S2. Compatibility

[0062] 1) Compatible with metal-containing hazar...

Embodiment 3

[0077] An embodiment of the present invention provides a method for co-processing metal-containing hazardous waste and cyanide tailings, which specifically includes the following steps:

[0078] S1. Drying

[0079] Unpack the metal-containing hazardous waste stored in tons of bags in the material preparation warehouse, and send it to the first dryer for drying. The cyanide tailings are stacked in bulk, and send the cyanide tailings to the second dryer for drying. After drying, they are transported To the respective pits, take multiple batches of samples to test the drying effect, the moisture after drying is shown in Table 9;

[0080] Table 9 Moisture after drying (w / %)

[0081] batch 1 2 3 4 5 6 7 average Metal Containing Hazardous Waste 29.19 27.95 27.69 29.98 29.96 29.71 29.69 29.17 Cyanide tailings 17.31 18.59 16.19 18.31 18.41 18.73 18.66 18.03

[0082] S2. Compatibility

[0083] 1) Compatible the metal-containing hazard...

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Abstract

The invention provides a co-processing method for metal-containing hazardous waste and cyanidation tailings, and relates to the technical field of ecological environment treatment. The co-processing method for the metal-containing hazardous waste and the cyanidation tailings specifically comprises the following steps that S1, the metal-containing hazardous waste and electrolytic aluminum anode scraps are unpacked and dried, and the cyanidation tailings are stacked in bulk; s2, the metal-containing hazardous waste, the cyanidation tailings and the dry basis of the electrolytic aluminum anode scrap are subjected to compatibility according to the proportion, and a homogenized material meeting the process requirement is obtained; s3, the homogenized material obtained after compatibility is put into an oxygen-enriched side-blown molten pool smelting furnace to be subjected to oxidation reduction smelting; and S4, metal-containing flue gas generated in the smelting process is subjected to purification treatment. By means of the treatment method, the metal recovery rate can be increased, harmless treatment is achieved, the unrecovered metal exists in the vitrified water disintegrating slag, the leaching pollution risk is avoided, the unrecovered metal can be used as a building material or used for sand blasting, meanwhile, flux does not need to be added in the smelting process of the treatment method, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of ecological environment treatment, in particular to a co-processing method for metal-containing hazardous waste and cyanide tailings. Background technique [0002] In recent years, with the rapid development of my country's industry, there are many industries producing hazardous waste in our country, and the types of waste produced are various, and the production volume is increasing year by year. Hazardous metal-containing waste occupies a considerable proportion, mainly from chemical industry, metallurgy, surface treatment, electronic component manufacturing, printing and other industries, and has the characteristics of complex chemical composition and uneven grade. [0003] At present, the disposal methods of hazardous metal-containing wastes at home and abroad mainly include: wet leaching, safe landfill, pyro-blast smelting, etc. For hazardous metal-containing wastes, if the leaching residues produced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B7/04C22B5/10C22B5/16C22B13/02C22B15/00C22B19/30C22B23/02C03C6/10C25C3/12
CPCC22B7/001C22B7/04C22B5/10C22B5/16C22B19/30C22B13/025C22B15/0052C22B15/0056C22B15/0054C22B23/025C03C1/002C25C3/125
Inventor 袁晓明陈森吕新宁秦耀伟李飞飞孙振杰姜希伟王中兴汪建军王桂云
Owner 莱阳市裕铭环保科技有限公司