Title: Technology of purifying the sodium carbonate from natural soda-salt mineral
Application Number: 86104240 Application Date: 1986.06.15
Publication Number: 1012597 Publication Date: 1987.08.12
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01D7/10
Applicant(s) Name: Li Yuncai Address:
Inventor(s) Name: Gao Yutang
Attorney & Agent:
Abstract:
     The technology is solving the soda mineral at 60 deg.C clearing up and removing the impurities by hydrodynamically, spray-cooling and crystallization, removing bound water by spray-drying and packing the products. The distinction of the technology is to make use of the difference of solubilities of soda ash between 45.65g/100g H2O and 21.29g/100g H2O at 60 deg.C and 20 deg.C respectively to dissolve and clear up on heating and crystallize on cooling.
Time: 9