Limescale is a hard, chalky deposit, consisting mainly of calcium carbonate (CaCO3). It often builds up inside kettles, boilers, and pipework, especially that for hot water. It is also often found as a similar deposit on the inner surfaces of old pipes and other surfaces where "hard water" has flowed. Limescale also forms as travertine or tufa
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2019/2/26 · The boiler will allow the company to convert 130,000 tons of waste per year into district heat, industrial hot water, industrial steam and electricity. The boiler will have a thermal capacity of 20 MW and will be based on Valmet's bubbling fluidized bed (BFB) technology with Advanced Combustion Zone (ACZ) for low-emission control.
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