Title of Process/ Know-how/ Product/Design/Equipment
Process for recovery of common salt, potassium chloride and high purity magnesia from brine in an integrated manner
Application/Uses/Problem being addressed
Salient Technical Features including Competing Features/ Impact
The process relates to a process for recovery of common salt and marine chemicals of high purity in integrated manner, which boosts the viability of such recovery. The process is amenable to a wide range of brine compositions but especially attractive for brine compositions that are low in sulphate content and yield impure salt when the conventional process of solar salt production is followed.
The process is for recovery of common salt, potassium chloride, concentrated magnesium chloride with enriched bromide, and high purity magnesia from brine in an integrated manner, said process comprises preparation of calcium chloride by reaction of hydrochloric acid generated in the process with limestone, desulfatation of brine with calcium chloride, production of sodium chloride of 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 utilizable in the process.
TRL Level & Scale of Development:
-
Business scope & opportunity (in terms of scale, cost, market etc.):
The technology has been validated in CSIR-CSMCRI ESF/ pilot plant.
The process / technology is ready for technology transfer and can be implemented on commercial scale. The product has high demand in industrial sector.
Environmental Considerations:
Eco-friendly
Status of Licensing:
Ready for transferStatus of Commercialization:
Ready for commercializationMajor Raw Materials Needed
Bittern
Major Plant Equipment and Machinery Required
Material handling equipment such as pumps, belt conveyors, ridger, harvesters, loaders, crushers, tractors, trailers, Washery etc.
Techno-Economics
To be worked out based on proposed capacity