Dolomite Overview: Application In Treating Desalinated Water

Right from the 19th century to the present day dolomite in India is one of the most important minerals. Global Dolomite Mining industry growth remains steady in the upcoming future. Dolomite is a double carbonate of calcium and magnesium. The common concept is that dolomite is a mixture of calcite and magnesite but it is more of a compound. Dolomite has a chemical formula of CaCO3.MgCO3 with a molecular weight of 184.4 and a specific gravity of 2.84g/cm3. Theoretically, pure dolomite contains 45.7% MgCO3 and 54.3% CaCO3. Moreover, the hardness of dolomite varies between 3.0 to 4.0 on the Mohs scale.

Applications Of Dolomite In Different Sectors

• Construction aggregate
• Cement manufacture, dimension stone
• Calcined to produce lime, sometimes an oil and gas reservoir
• A source of magnesia for the chemical industry
• Agricultural soil treatments, metallurgical flux

Dolomite Mining Usage In Treating Desalinated Water

• According to geologists and mining experts, the formation of dolomite is one of the most interesting of all the major rock-forming minerals. Apart from its significance in different industries, it has become an important constituent for the post-treatment of desalinated water. 
• According to WHO, there should be a minimum concentration of 10 mg Mg/L in desalinated water. Dolomite dissolution is a means of adding magnesium ions to desalinated water at the post-treatment stage. The professionals carry out this process in addition to Ca2+ ions and carbonate alkalinity. However after the results of the research conducted came out, everyone understood that dolomite dissolution per se is not feasible for post-treatment purposes. On further investigation, the results showed dolomite stops dissolving at a relatively low pH, rendering the alkalinity. 
• To solve this problem, experts implemented three combined dolomite-calcite dissolution alternatives. Among these three, the one that was effectively involved the dissolution of dolomite at first. Then it was accompanied by  CO2(aq)-rich effluent to further dissolve calcite.

Referred to as the best dolomite mining company in India, Metis Steel is doing a commendable job. The company provides a huge amount of dolomite to various industries across the country. The quality of the delivered products bear the maximum purity and therefore they have happy clients. Additionally, they follow an ethical approach in the manufacturing process.