ILITO LOFONGO Daddy Patrick1*, KANDOLO KASEME Candice 1, MULUMBA KALAMBAY Alex1, INKIBA BATOKO Arsene2, MWANZA KANT Patrick1

Physico-Chemical Properties of Sand Deposits in Madimba Territory (Kongo Central), Favorable for Glass Industry.

The study consists in the determination of the physico-chemical properties of the sands in three deposits (Ngufu, Ngeba,Kimpemba) in the Madimba territory in Kongo Central province in order to assess their use in the glass industry. Essential elements usable in glassware are chemical composition, particle size, moisture, and loss to fire. Documentary work and photo- interpretation techniques enabled the selection of target sites. Sedimentological, particle size and chemical analysis of oxides were used. It was found that more than 80% of the particles in collected samples have their size between 0.71 mm to 0.1 mm ; an average of 98.9058% sand , 0.55% clay and 0.53% silt. These sands have a low fire loss with an average of 0.08% or 0.1%. Humidity is less than 1% ; it may increases with depth because of the influence of groundwater. The results of chemical analysis of oxides give respective a mean contents of SiO2 :98.9725%; Fe2O3 :0.0275%; Cr2O3 :0.0075%; TiO2 :0.0358; CaO :0.0658% ; MgO :0.0217%; K2O :0.0200% and MnO :0.0125%. The content of silica, SiO2>98.9% shows that these sands are pure and have only low levels of impurities; hence their physico-chemical properties are favorable to glassware. Télécharger l'article