Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR SELECTIVELY LEACHING AND UPGRADING HIGH-TITANIUM SLAG
Document Type and Number:
WIPO Patent Application WO/2019/137542
Kind Code:
A1
Abstract:
A method for selectively leaching and upgrading high-titanium slag, which is carried out according to the following steps: (1) crushing high-titanium slag, and then placing the slag and a sodium hydroxide solution into an autoclave; (2) introducing oxygen into the autoclave, heating, stirring and preserving heat to complete acid leaching; (3) filtering and separating a material after acid leaching, and preparing acid leaching slag after the alkali leached material is washed with water; (4) placing the acid leaching slag and hydrochloric acid into an autoclave, then adding a crystal seed, and heating, stirring and preserving heat to complete acid leaching; (5) filtering and separating a material after acid leaching, and washing and drying the acid leaching product to obtain high-purity titanium dioxide. The method of the present invention may achieve the cyclical use of resources, does not generate industrial waste water and waste residue, and achieves green production.

Inventors:
ZHANG TINGAN (CN)
DOU ZHIHE (CN)
LIU YAN (CN)
ZHANG ZIMU (CN)
WANG YANXIU (CN)
Application Number:
CN2019/071692
Publication Date:
July 18, 2019
Filing Date:
January 15, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C22B34/12; C22B3/10; C22B3/12
Foreign References:
CN108300874A2018-07-20
CN108300875A2018-07-20
CN108149015A2018-06-12
CN103834812A2014-06-04
JP3911538B22007-05-09
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
Download PDF: