Refractory material preparation process and refractory material preparation system for European smelting gasifier: Fid-Bau Portal

Refractory material preparation process and refractory material preparation system for European smelting gasifier

TIAN GUO / ZOU QINGFENG / GUO QINGHUA

The invention discloses a refractory material preparation process and a refractory material preparation system for an European smelting gasifier, the refractory material preparation process comprises the steps of preparing a shaped refractory material and preparing a high-strength spray coating, the shaped refractory material takes alpha-Al2O3 as a main raw material, a proper amount of chromic oxide powder and chrome corundum clinker fine powder are added according to the proportion, a proper amount of water is added as a mixing agent, and the high-strength spray coating is prepared through forming, sintering and sintering. Compared with the preparation of the shaped refractory material, the preparation of the high-strength spray coating changes the mixing agent from water to solvent glue combination. The chromium corundum material is used for replacing a refractory material at the key part of the vault of the gasifier, sintering can be realized by controlling the vault heating rate without a special baking process before blow-in, and the chromium corundum refractory material adopts a sol combination mode, so that the smelting reduction gasifier can be quickly repaired; spraying refractory materials can be rapidly and tightly combined, material stability is achieved, the volume density is effectively controlled, and the service life is long.

本发明公开了一种欧冶炉气化炉用耐火材料配制工艺及其耐材配制系统，包括定型耐火材料配制以及高强喷涂料配制，其中定型耐火材料以α‑Al2O3为主原料，按照配比加入适量氧化铬粉和铬刚玉熟料细粉，再加入适量水作为混合剂，经成型，在高温下烧成，其中所述高强喷涂料配制相较于定型耐火材料配制将混合剂由水改为溶剂胶结合。本发明使用铬刚玉材质替换气化炉拱顶关键部位的耐火材料，在开炉前无需特殊烘烤过程，控制拱顶升温速率即可实现烧结，且铬刚玉系耐材采用溶胶结合方式，能够快速修复熔融还原气化炉；喷涂耐材能够快速紧密结合，实现材料体稳定，体积密度控制有效，使用寿命长。

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