Title:
純度・白色度の高い天日塩の費用効果の優れた生産方法
Document Type and Number:
Japanese Patent JP5177956
Kind Code:
B2
Abstract:
The process of the invention deals with significant improvements in salt purity and whiteness brought about through treatment of brine with alum prior to charging into crystallizers for solar salt production. The improvements realized are partly on account of elimination of suspended impurities like gypsum and clayey matter in the brine, which may otherwise be carried along with the brine in the crystallizer and finally end up in the salt, and partly due to the improved crystal size and morphology that minimizes embedded impurities in the salt. Rain washing of the heaped salt has resulted in a salt with greatly reduced calcium and sulphate impurity levels hitherto not achieved in solar salt production. Alum treatment by the process of the invention requires no additional time or infrastructure and the cost of the treatment works out to <3 U.S. cents per ton of salt. The process can be implemented in any solar salt works.
Inventors:
Indrajit Mucopadhai
Pushipit Kumar Gosh
Badakke Psor Mohandas
Abdullahmid Usman Bahai Hamidani
Benkatarama Krishna Salma Susarla
Rahul Jasbantley Sangavi
Pushipit Kumar Gosh
Badakke Psor Mohandas
Abdullahmid Usman Bahai Hamidani
Benkatarama Krishna Salma Susarla
Rahul Jasbantley Sangavi
Application Number:
JP2006058323A
Publication Date:
April 10, 2013
Filing Date:
March 03, 2006
Export Citation:
Assignee:
Council of Scientific and Industrial Research
International Classes:
C01D3/06; A23L27/40; B01D9/02
Domestic Patent References:
| JP10150947A | ||||
| JP9503693A | ||||
| JP2000508236A | ||||
| JP6055181A | ||||
| JP5137905A |
Foreign References:
| WO1996026899A1 |
Attorney, Agent or Firm:
Koichi Washida