Method for producing rare-earth poly-ferric aluminum silicate sulfate from rare earth-containing sludge and iron-containing dust sludge

Abstract

The invention belongs to the technical field of preparing macromolecule flocculating agent for sewage processing, and in particular relates to a method of producing poly-silicate rare-earth aluminum ferric sulfate by using mud containing rare earth and ferric dust, which comprises the steps of material mixing, acid hydrolysis and oxidization, hydrolysis and polymerization. The invention provides a novel technology of using main raw materials, such as sewage and mud containing rare earth and generated in pertrification catalyst production enterprises and mud containing ferric dust generated inmetallurgy steel-smelting enterprises for preparing macromolecule flocculating agent. The invention simplifies the technical process for producing poly-silicate rare-earth aluminum ferric sulfate, shortens the production time, has good product stability and performance, provides a new way for utilizing the mud containing rare earth and ferric dust, increases resource integrated utilization rate, lowers the production cost of the poly-silicate rare-earth aluminum ferric sulfate flocculating agent and the cost for sewage processing, and has high economic benefit, environmental protection benefit and social benefit.

Description

Method for producing polysilicon sulfate rare earth aluminum iron by using rare earth-containing sludge and iron-containing dust sludge 1. Technical field: The invention belongs to the technical field of preparing polymer flocculants for sewage treatment, and in particular relates to a method for producing rare earth aluminum iron polysilicon sulfate by using rare earth-containing sludge and iron-containing dust sludge. 2. Background technology: The existing raw materials for producing polysilicon aluminum ferric sulfate include sodium silicate, ferric sulfate, and aluminum sulfate. The production method is to acidify sodium silicate to prepare polysilicic acid, and then introduce iron and aluminum ions to polymerize. This production method needs expensive chemical raw materials, and the cost is relatively high. And ZL200510094967.1 "Method for preparing polysilicon aluminum ferric sulfate with metallurgical slag", although found a way to reduce the production cost of poly...

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Problems solved by technology

This production method requires expensive chemical raw materials, and the cost is relatively high.

And ZL200510094967.1 "Method for preparing polysilicon aluminum ferric sulfate with metallurgical slag", although found a way to reduce the production cost of polysilicon aluminum ferric sulfate, but the effective concentration is low and the stability is poor

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