Patents

IN222095: Recovery of sodium chloride and other salts from brine

A new process for recovery of common salt, potassium chloride, concentrated magnesium chloride with enriched bromide, and high purity magnesia form brine in an integrated manner, said process comprises preparation of calcium chloride by reaction of hydrochloric acid generated in the process with limestone, desulphatation of brine with calcium chloride, production of sodium chloride or superior quality in solar pans, solar evaporation of bittern thereby producing carnallite and end bittern, processing carnallite through established processes to produce potassium chloride, recovering end bittern containing highly concentrated magnesium chloride and enriched bromide and calcination of a part of the end bittern after solidification to produce high purity magnesia and hydrochloric acid utilisable in the process.

Filing Date: 03-10-2016

Issue Date: 08-07-2018

Applicant: CSIR-Central Salt Marine Chemicals Research Institute (CSIR-CSMCRI), Bhavnagar

Patent No: IN222095

Application No: 01689DELNP2003

Inventor(s): Rajinder Nath Vohra; Pushpito Kumar Ghosh; Vadakke Puthoor Mohandas; Himanshu Labhshanker Joshi; Hasina Hajibhai Deraiya; Rohit Harshadray Dave; Koushik Halder; Ran Bahadur Yadav; Sohan Lal Daga; Kishorkumar Manmohan Das Majeethia; Upendra Padmakant Saraiya

IPC Classification: C01D 3/06

Country: India

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