Penelitian komposisi kimia, jenis bahan mentah dan kualitas pasta kapur untuk proses “liming”

The ain of this research was to determine the chemical composition, kind of raw material and the quality of paste of lime-water, for liming process in the limeyard within a tannery. Paste of lime water was produced by adding a quantity of water to lime in the pit. Samples was taken from the pits, after the hydration reaction was completed. The lime-paste was immersed in water to avoid natural carbonization reaction with carbondioxide in the air. The samples paste lime-water soon analysed. It was concluded that the paste of lime-water composed mainly of 12.75% CaO and 15.81%MgO wet basis. The pH of the saturated lime-water solution was 12.5. The raw material used was dolomite limestone. The quality of paste of lime-water was suitable for liming process.