Formula and manufacturing method of graphitization furnace wall refractory castable precast block: Fid-Bau Portal

Formula and manufacturing method of graphitization furnace wall refractory castable precast block

LIU YUANHE / WU FENG / SUO HUAIYU / CHENG YUEHUI

The invention discloses a formula and a manufacturing method of a graphitization furnace wall refractory castable precast block, and relates to the technical field of precast blocks. The formula comprises the following raw materials: three special grade flint clay clinkers with different granularities, fused zirconia corundum, low iron mullite fine powder, silica powder, pure calcium aluminate cement, a water reducing agent, an anti-explosion agent, a defoaming agent and water. Particle raw materials composed of three kinds of special-grade flint clay clinkers with different granularities and fused zirconia corundum are selected, are fully mixed and then are injected into a model, a precast block is prepared through vibration casting, and after baking heat treatment for a certain time, the elastic compression strength of the precast block can be effectively enhanced. The special-grade flint clay clinker has the characteristics of extremely low impurity content, particularly extremely low Na2O+K2O content, high refractoriness and wide sintering fusion range, and can be fully sintered with other raw materials in a high-temperature use environment, so that the elastic compression strength of the precast block is effectively enhanced, and the sintered block can be prevented from cracking and the like.

本发明公开了一种石墨化炉炉墙耐火浇注料预制块的配方及制作方法，涉及预制块技术领域，所述配方包含以下原材料：三种不同粒度的特级焦宝石熟料、电熔锆刚玉，低铁莫来石细粉、硅微粉、纯铝酸钙水泥、减水剂、防爆剂、消泡剂、水。通过选取的三种不同粒度的特级焦宝石熟料和电熔锆刚玉组成的颗粒原料，通过充分的混合后注入模型经振动浇注制成预制块，且经过一定时间的烘烤热处理，可使预制块的弹压强度得到有效的增强，由于特级焦宝石熟料中杂质含量极低，尤其是Na2O+K2O含量极低，其耐火度较高，且烧结熔融范围比较宽的特性，可在高温使用环境中与其他的原材料充分的烧结在一起，进而使预制块的弹压强度得到有效的增强，可避免烧结块出现破裂等。

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