PREPARING METHOD OF CAO REFRACTORIES

摘要

The calcium oxide refractory material is produced by firing at 1,200-1,350 deg.C, after wet mixing with calcium oxide and Si- oil solution and pressing this mixture. Si-oil solution comprises hydrogen chloride based solvent such as aromatic hydrocarbon system or trichloromethane, and its weight percent is 5- 25 to the weight of calcium oxide. The pure calcium oxide particles are coated by Si-oil solution in wet mixing process, and drying this mixture at ambient atmosphere of 150-200 deg.C. The most suitable solution of Si-oil is methyl-hydrogen-polysiloxane. The CaO refractory material is used as a flux for refining.