Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A technology of rare earth sulfate and iron dust sludge, which is applied in the direction of flocculation/precipitation water/sewage treatment, etc., can solve the problems of expensive chemical raw materials, low effective concentration, poor stability, etc., to reduce production costs and sewage treatment costs, Excellent performance and good product stability

Inactive Publication Date: 2009-07-15
杨祺
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing rare-earth poly-ferric aluminum silicate sulfate from rare earth-containing sludge and iron-containing dust sludge
  • Method for producing rare-earth poly-ferric aluminum silicate sulfate from rare earth-containing sludge and iron-containing dust sludge

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] (1). Weigh 2 kg of rare earth-containing sludge and 3.6 kg of steelmaking dust and mix them thoroughly, and put the rare earth-containing sludge and steelmaking dust into an acid-resistant reaction kettle at a weight percentage of 1:1.8.

[0023] (2). 52L mass percent concentration 10% H2SO4 is slowly poured into the reactor to carry out acid hydrolysis to rare earth sludge and steelmaking dust sludge, containing rare earth sludge, steelmaking dust sludge: 10%H2SO4 by weight 1 : 10 and fully stirred for 1 hour, the reaction system was cooled to room temperature, and the acidolysis reaction was completed.

[0024] (3). Filter the reaction product to remove the precipitate (mainly gypsum and acid insoluble matter), and the filtrate (mainly a mixed solution of ferrous salt, ferric salt, aluminum salt, lanthanum salt, cerium salt and hydrated silicic acid) Use 27.5% H2O2 to make all Fe2+ in the solution be oxidized to Fe3+, and the oxidation end point of the process of oxid...

example 2

[0026] (1). Weigh 2 kg of rare earth-containing sludge and 4 kg of steelmaking dust and mix them thoroughly, and put the rare earth-containing sludge and steelmaking dust into the acid-resistant reaction kettle at a weight percentage of 1:2.

[0027] (2). 99L mass percent concentration 5% H2SO4 is slowly poured into the reactor to carry out acid hydrolysis to rare earth sludge and steelmaking dust sludge, and rare earth sludge, steelmaking dust sludge: 5% H2SO4 by weight 1 : 17 was fully stirred for 1 hour, and the reaction system was cooled to room temperature, and the acidolysis reaction was completed.

[0028] (3). Filter the reaction product to remove the precipitate (mainly gypsum and acid insoluble matter), and the filtrate (mainly a mixed solution of ferrous salt, ferric salt, aluminum salt, lanthanum salt, cerium salt and hydrated silicic acid) Use 27.5% H2O2 to make all Fe2+ in the solution be oxidized to Fe3+, and the oxidation end point of the process of oxidizing F...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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 in metallurgy 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

1. Technical field: [0001] 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: [0002] 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 polysilicon aluminum ferric sulfate, but the effective concentration is low and the stability is poor. 3. Contents of the in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 杨祺杨忠刚
Owner 杨祺
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com