What is the common name for a mixture of calcium silicates and aluminium, prepared by prolonged heating of limestone with clay, which slowly hardens when mixed with water?
Clinker (cement) Clinker (cement) In the manufacture of Portland cement, clinker occurs as lumps or nodules, usually to 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. Clinker consists of various calcium silicates including alite and belite. Tricalcium aluminate and calcium aluminoferrite are other common components. These components are often generated in situ by heating various clays and limestone. Portland cement clinker is made by heating a homogeneous mixture of raw materials in a rotary kiln at high temperature . The products of the chemical
Aluminium chloride tetrachloroaluminate AlCl in the presence of chloride ions. Aluminium chloride reacts with calcium and magnesium hydrides in tetrahydrofuran forming tetrahydroaluminates. Aluminium chloride is hygroscopic, having a very pronounced affinity for water. It fumes in moist air and hisses when mixed with liquid water as the Cl ions are displaced with HO molecules in the lattice to form the hexahydrate [Al(HO)]Cl (also white to yellowish in color). The anhydrous phase cannot be regained on heating as HCl is lost leaving aluminium hydroxide or alumina (aluminium oxide): On strong heating (~400 °C), aluminium oxide is formed from the aluminium hydroxide via: Aqueous