The raw materials supplied are mainly stored in silos. A small percentage of 2. CASTING the raw materials used are supplied in sacks and/or big bags. The stages of the production process are as follow: Once the quality of the desired mixture has been obtained and controlled by the laboratory, the slip is pumped into the overhead casting tanks. From there, it feeds the casting lines by gravity, where it is injected into 1. RAW MATERIAL PREPARATION hermetically sealed plaster moulds, moulds in which the piece is formed. Mineral raw materials (clay, kaolin, feldspar and silica) are unloaded fromOther pieces are also produced using plastic moulds with medium pressure trucks in the areas marked for this purpose. slip injection, although to a lesser extent. The plaster moulds used are produced in the same plant and are manufactured by filling a mixture of The raw materials are taken to the mixer, where they are blended withplaster and water into araldite master moulds. After setting, the master osmotic water. The resulting mixture is sieved and pumped into the storagemoulds are separated, and the plaster moulds are removed and transported tanks and kept in suspension with the help of agitators. The paste resultingto the dryers for their first dehydration prior to their use. from this operation is known as slip. 9 Ceramic sanitaryware