A process system for harmless treatment of electroplating sludge using metallurgical sintering blast furnace

Abstract

The invention relates to a process system for the innocent treatment on electroplating sludge by utilizing a metallurgic sintering blast furnace. The process system comprises an electroplating sludge nuclear forming system, a nuclear bulge pre-coating system, a secondary composite pellet manufacturing system, a halfway reduction detoxification system and a blast furnace system. By utilizing a secondary material composite pelleting technology, in a colter uniformly-mixing pelleting system, the electroplating sludge and reductive metallurgic waste gravity fly ash form pellet cores with the appropriate granularity. In the pre-coating process, no secondary pollution is produced by the electroplating sludge by adopting the fly ash as a pre-coating material. The electroplating sludge enters a conventional pelletizing device to be subjected to the secondary composite pelleting after the electroplating sludge is pre-coated, then the electroplating sludge is transported to be subjected to metallurgic sintering and then enters a blast furnace to be thoroughly detoxified so as to realize the integrated use of resources. By adopting the process system, the electroplating sludge is thoroughly detoxified, and no new harmful substance is generated; little construction expense is used, and the operation expense is low; the resources can be effectively utilized, and a brand new way is developed for the harmless treatment of the electroplating sludge and the integrated use of the resources.

Description

technical field [0001] The invention belongs to the technical field of hazardous and harmful solid waste treatment, and specifically relates to the production of pellets and a harmless treatment process system for electroplating sludge, which can directly use metallurgical sintering and blast furnace to realize the harmless treatment and resource utilization of electroplating sludge Comprehensive utilization. The electroplating sludge composite pellets produced by the process system and processed by metallurgical sintering and blast furnace can become nickel-chromium-containing pig iron raw materials with high economic value through comprehensive utilization of resources. Background technique [0002] At present, for the harmless treatment of electroplating sludge and the recycling of resources, none of the electroplating enterprises has effective technology to completely solve it. There are roughly four methods for treating electroplating sludge: 1) Solidification / stabiliz...

AI Technical Summary

Problems solved by technology

Among the above processing methods, some are too much investment and high operating costs, some are not thorough enough, some are not fully and effectively utilizing resources, and some are occupying a large amount of land and wasting resources

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