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Boiler Water sludge is caused by the presence of small quantities of hardness salts and traces of suspended matter in operational steam boilers and feed waters.This sludge settles on the surface forming a hard scale which indirectly increases the maintenance costs, degrades the heat transfer efficiency and overall boiler efficency. Therefore in order to ensure the boiler system and operate at optimum effiency it is essential that correct water conditions are maintained at all times.

Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone.

East India Chemical the term chromic acid is usually used for a mixture made by adding concentrated sulfuric acid to a dichromate, which may contain a variety of compounds, including solid chromium trioxide. This kind of chromic acid may be used as a cleaning mixture for glass. Chromic acid may also refer to the molecular species, H2CrO4 of which the trioxide is the anhydride. Chromic acid features chromium in an oxidation state of +6 (or VI). It is a strong and corrosive oxidising agent.

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