Title:
RESOURCE COMPREHENSIVE UTILIZATION PROCESS FOR SOLID WASTE OF RED MUD, FLY ASH, STEEL SLAG AND COAL GANGUE
Document Type and Number:
WIPO Patent Application WO/2024/074144
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of industrial solid waste recycling, and particularly relates to a source comprehensive utilization process for solid waste of red mud, fly ash, steel slag and coal gangue. The resource comprehensive utilization process comprises: adding Na2Co3, O2 and a reducing agent into industrial solid waste for a reaction, and separating out molten iron and molten liquid slag; adding a sodium salt into the molten liquid slag for a reaction to obtain a reaction liquid and sediment; sequentially introducing the reaction liquid into a calcium salt precipitation tank, an aluminum salt precipitation tank, and a silicon acid tank, separately introducing CO2 for an acidification reaction, and after filtration, sequentially obtaining a calcium salt, an aluminum salt, silicic acid and an alkali liquor; concentrating and crystallizing the alkali liquor to obtain a potassium salt and a sodium salt; drying the sediment and introducing Cl2 for a reaction to obtain gaseous TiCl4 and a residue; and adding sodium hydroxide into the residue for a reaction to obtain magnesium hydroxide. According to the source comprehensive utilization method for solid waste, the treatment process is short, the energy consumption is low, the additional value of a product is high, and no waste water and waste residue is discharged in the treatment process, so that the method is green and environment-friendly.
More Like This:
Inventors:
XU BO (CN)
XU YIMING (CN)
XU YIMING (CN)
Application Number:
PCT/CN2023/123286
Publication Date:
April 11, 2024
Filing Date:
October 08, 2023
Export Citation:
Assignee:
ZIBO YIHAI ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
International Classes:
C01F7/30; B09B3/00; C01F7/02; C04B18/12
Foreign References:
| CN115301716A | 2022-11-08 | |||
| CN102583477A | 2012-07-18 | |||
| CN102502665A | 2012-06-20 | |||
| CN102190322A | 2011-09-21 | |||
| CN101891224A | 2010-11-24 | |||
| CN103030160A | 2013-04-10 | |||
| US20090234174A1 | 2009-09-17 | |||
| US20170036920A1 | 2017-02-09 |
Attorney, Agent or Firm:
QINGDAO FIRST PATENT & TRADEMARK AGENT CO., LTD. (CN)
Download PDF:
Previous Patent: CONSTRUCT FOR ENHANCING GENE EXPRESSION
Next Patent: BISPECIFIC ANTIBODY BINDING TO BAFFR AND CD3 AND USE THEREOF
Next Patent: BISPECIFIC ANTIBODY BINDING TO BAFFR AND CD3 AND USE THEREOF