Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR REMOVING ALUMINUM FROM STRONG ALKALI SOLUTION AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/142674
Kind Code:
A1
Abstract:
A method for removing aluminum from a strong alkali solution. The method comprises: concentrating and filtering a strong alkali solution, taking a first concentrated solution, and adding an aluminum removing agent thereto to obtain a silicon slag and a filtrate; and concentrating and filtering the filtrate to obtain a metal hydroxide crystal and a second concentrated solution, wherein the aluminum removing agent comprises the following components: a silicate and silicon dioxide; and the strong alkali solution comprises aluminate ions. By using a silicate and silicon dioxide as the aluminum removing agent in the strong alkali solution, a water-insoluble aluminosilicate is generated from aluminum in the case that the original pH of the solution is not changed, and aluminum in the strong alkali solution is eliminated to a level of 30-100 ppm; moreover, corresponding sodium hydroxide, potassium hydroxide or lithium hydroxide crystals can be recovered, and mother liquor can be recycled.

More Like This:
WO/2010/084877PROCESSES FOR THE DISPOSAL OF ARSENIC
JPS6059975[Title of the Invention] A method of condensing silver from a copper electrolysis slime
Inventors:
MIAO YAOWEN (CN)
LI CHANGDONG (CN)
QIAO YANCHAO (CN)
LI BO (CN)
CHEN RUOKUI (CN)
RUAN DINGSHAN (CN)
Application Number:
PCT/CN2022/135814
Publication Date:
August 03, 2023
Filing Date:
December 01, 2022
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
International Classes:
C22B7/00; C01D1/32; C01D15/02; C22B3/44; C22B26/10; C22B26/12; H01M6/52; H01M10/54
Foreign References:
CN114480853A2022-05-13
CN104649320A2015-05-27
CN101323950A2008-12-17
US5531906A1996-07-02
US6077439A2000-06-20
Attorney, Agent or Firm:
BEIJING YZH IP FIRM (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: MULTILAYER COMPOSITE SEPARATOR FILM, SECONDARY BATTERY COMPRISING SAME, AND ELECTRICAL DEVICE

Next Patent: PREPARATION METHOD FOR SILICON-CARBON NEGATIVE ELECTRODE MATERIAL AND USE THEREOF