Abstract
Summary In the Lithuanian metal working plants galvanotechnical slime is formed during the manufacturing process. It consists of Fe, Ca, Mg and combinations of microelements Cr, Mn, Co, Ni, Cu, Zn, Cd, Pb such as hydroxide, sulphide etc. To prevent contamination of the environment by metal combinations contained in the galvanotechnical slime it has to be utilized for ceramic products during the manufacturing process. In Lithuania the galvanotechnical slime is utilized for ceramzite produced in the Palemonas factory. The aim of this work is to find out whether the microelements contained in galvanotechnical slime are emitted from ceramzite into the environment while ceramzite is affected by water. There is hydromical clay in Lithuania. Cremate clay contains 70—95% of hydromicas, 5—30% kaolinite, and up to 5% of chlorite and traces of montmorillonite. It contains quartz, feldspars, calcite and limonite as well. Oxidical structure (%) is: SiO2 48–51, Al2O3 + TiO2 14—19, Fe2O3 5—8, CaO 7–11, MgO ∼ 3, K2O ∼ 3,...
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