In the bauxite refining process, the aluminum-bearing minerals in bauxite are converted in a multiple-step process to alumina (Al2O3). Alumina can be smelted to form metallic aluminum or it can be used as the source of many other products, including refractory materials used to line high-temperature rotary kilns and metallurgical furnaces.
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ABOUT US. Our company is based in the town of Trzebinia, located on the motorway connecting Krakow and Katowice.Here, for more than 100 years, we have been manufacturing cement sold throughout Europe.In the meantime, Europe has changed, the countries and regimes have changed.In our country, the technology of production, types of cements (previously Portland cements, now calcium aluminate and ...
In the manufacture of Portland cement, clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter, produced by sintering (fused together without melting to the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage.