Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-cost environment-friendly tundish fire clay, preparation method and construction method
The invention provides low-cost environment-friendly tundish fire clay, a preparation method and a construction method. The low-cost environment-friendly tundish fire clay is prepared from the following raw materials in parts by mass: 5-40 parts of regenerated alumina-magnesia brick waste, 35-80 parts of magnesite, 0.5-5 parts of silica powder, 0.1-5 parts of clay, 0-4 parts of aluminate cement, 0.1-1 part of a water reducing agent and 0.1-0.3 part of organic fibers. The tundish fire clay does not contain chromium, so that chromium pollution can be avoided; and the regenerated alumina-magnesia brick waste material is adopted as the raw material, the waste material is completely utilized, the production cost is reduced, the regenerated alumina-magnesia brick waste material generates the magnesium aluminate spinel at the high temperature, and the contained Al2O3 reacts with the MgO generated after the magnesite decomposition to generate the magnesium aluminate spinel, so that the volume shrinkage caused by the magnesite decomposition can be made up, the gap between the fire clay and a tundish nozzle is avoided, and the problem of steel seepage is solved.
本发明提供一种低成本环保中间包火泥、制备方法及施工方法，低成本环保中间包火泥按照质量份数计算，其制备原料包括以下组分：再生铝镁砖废料5‑40份、菱镁石35‑80份、硅微粉0.5‑5份、粘土0.1‑5份、铝酸盐水泥0‑4份、减水剂0.1‑1份、有机纤维0.1‑0.3份。该中间包火泥不含铬，可避免铬污染；采用再生铝镁砖废料作为原料，充分利用废弃物，降低生产成本，且再生铝镁砖废料高温下生成镁铝尖晶石，其所含Al2O3也与菱镁石分解后产生的MgO反应生成镁铝尖晶石，可弥补菱镁石分解导致的体积收缩，避免火泥与中包水口之间出现缝隙，解决渗钢问题。
Low-cost environment-friendly tundish fire clay, preparation method and construction method
The invention provides low-cost environment-friendly tundish fire clay, a preparation method and a construction method. The low-cost environment-friendly tundish fire clay is prepared from the following raw materials in parts by mass: 5-40 parts of regenerated alumina-magnesia brick waste, 35-80 parts of magnesite, 0.5-5 parts of silica powder, 0.1-5 parts of clay, 0-4 parts of aluminate cement, 0.1-1 part of a water reducing agent and 0.1-0.3 part of organic fibers. The tundish fire clay does not contain chromium, so that chromium pollution can be avoided; and the regenerated alumina-magnesia brick waste material is adopted as the raw material, the waste material is completely utilized, the production cost is reduced, the regenerated alumina-magnesia brick waste material generates the magnesium aluminate spinel at the high temperature, and the contained Al2O3 reacts with the MgO generated after the magnesite decomposition to generate the magnesium aluminate spinel, so that the volume shrinkage caused by the magnesite decomposition can be made up, the gap between the fire clay and a tundish nozzle is avoided, and the problem of steel seepage is solved.
本发明提供一种低成本环保中间包火泥、制备方法及施工方法，低成本环保中间包火泥按照质量份数计算，其制备原料包括以下组分：再生铝镁砖废料5‑40份、菱镁石35‑80份、硅微粉0.5‑5份、粘土0.1‑5份、铝酸盐水泥0‑4份、减水剂0.1‑1份、有机纤维0.1‑0.3份。该中间包火泥不含铬，可避免铬污染；采用再生铝镁砖废料作为原料，充分利用废弃物，降低生产成本，且再生铝镁砖废料高温下生成镁铝尖晶石，其所含Al2O3也与菱镁石分解后产生的MgO反应生成镁铝尖晶石，可弥补菱镁石分解导致的体积收缩，避免火泥与中包水口之间出现缝隙，解决渗钢问题。
Low-cost environment-friendly tundish fire clay, preparation method and construction method
一种低成本环保中间包火泥、制备方法及施工方法
HU LINGJUN (Autor:in) / YAN HAO (Autor:in) / DENG WEI (Autor:in) / YU JIULI (Autor:in) / ZHAO WEI (Autor:in) / REN LIN (Autor:in) / LIU JINGXUAN (Autor:in) / SHI JIAPENG (Autor:in) / FU CHAOYANG (Autor:in) / WANG TUANSHOU (Autor:in)
08.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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