Abstarct
This study included the possibility of using Kaolin Duekhla and sand Ardma as materials in the production of local thermal cones with the addition of other materials such as sodium carbonate and calcium carbonate, red lead oxide, potassium feldspar, borax and fled in different proportions as material help smelting.Chemical analysis was to sand Erdma and Kaolin Duekhla to prove disqualified for work. Models have been formed through the stone cast and after mixing materials in a dry water was added to it to facilitate manual stamping CBS models were then drying models degree oven 120c. Program was burning in the oven at a rate of 300c per hour. Was prepared nine models change ratios of sodium carbonate and calcium carbonate for the difference in the degree of bending.The results of the fusion behavior of calcium carbonate are extrusive nonlinear Unlike Sodium Carbonate, which is in reverse, with the higher percentage of carbonate, sodium told temperature, and vice versa, either (density) rises with increasing temperature extrusive nonlinear unlike (porosity) drops with increasing temperature incineration Lama (hardness) and (compressibility) with a gradual increase in the temperature rise
