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The small gem salt is in the form of cubic crystals, white in color, with a salty taste and in different sizes. After the extraction and crushing process, the white crystals are carefully packaged, in closed, clean spaces. The assortment is used in the chemical industry, tannery, wood industry, textile industry, varnishes, and paints, etc. In industry, sodium chloride is considered the most important inorganic raw material. It is the basic substance of an industrial branch, which processes it to obtain sodium, chlorine, hydrochloric acid, sodium hydroxide, sodium carbonate, etc. At the same time, NaCl is used in the industry of varnishes, paints, paper, plastics, textiles, and others. In the metallurgical industry, it is used as a reducer, and in electronics, it is used in the manufacture of sodium vapor lamps. NaCl is also used in the organic chemical industry and in the pharmaceutical industry.
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Recovery of acids and acidic rinse waters Additionally to the pickling bath treatment by microfiltration and ultrafiltration, the recovery of acid becomes more and more important. Additionally to sulphuric and hydrochloric acid, also mixed acids (HF / HNO3) can be recovered. The first step of the acid recovery is mostly a sludge separation by microfiltration. Downstream, diffusion dialysis, electrodialysis or nanofiltration is used for metal separation. For the treatment of rinse waters, OSMO Membrane Systems GmbH offers reverse osmosis or electrodialysis plants.
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