| 摘要 |
PURPOSE:To enable hot application and application at ordinary temp. and to obtain superior strength, oxidation and heat resistances in a wide temp. range by using a specified composite binder in monolithic refractories consisting of fireproof aggregate, fireproof fine powder and alumina cement. CONSTITUTION:A mixture consisting of 47-64wt.% classified fireproof aggregate, 35-45% fireproof fine powder of <=74mum particle size and 1-8% alumina cement is blended with 0.1-3% composite binder prepd. by combining acid clay as a base with sodium phosphate and sodium silicate to obtain monolithic refractories. The chemical compsn. of the binder consists of 50-58% SiO2, 5-12% P2O5 and 12-18% Na2O. By using the refractories, even a furnace having a wide service temp. range such as a torpedo car or a rotary kiln can be subjected to seamless with uniform quality. |
