Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-seepage steel environment-friendly tundish fire clay, preparation method and construction method
The invention provides anti-seepage steel environment-friendly tundish fire clay, a preparation method and a construction method, and the anti-seepage steel environment-friendly tundish fire clay comprises the following preparation raw materials in parts by mass: 5-40 parts of white corundum, 35-80 parts of high bauxite, 5-35 parts of kyanite, 0.5-5 part of silica powder, 0.1-5 part of clay, 0.1-4part of zirconium oxide powder and 0.1-1 part of a water reducing agent. The tundish fire clay does not contain chromium, so that chromium pollution can be avoided; the viscosity of the fire clay isreduced through proper raw material particle size distribution, and field construction is facilitated; by adding zirconium oxide and utilizing the phase transformation toughening principle at the hightemperature, the high-temperature breaking strength of the fire clay is greatly improved, and the fire clay can resist to high-temperature molten steel scouring in the using process; and by adding kyanite and Al2O3-containing raw materials and using phase transformation at the high temperature of kyanite and expansion generated by secondary mullite, shrinkage, caused by liquid adding, of the fireclay is made up, gaps between the fire clay and the tundish nozzle are avoided, and the problem of steel seepage is solved.
本发明提供一种防渗钢环保中间包火泥、制备方法及施工方法，防渗钢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：白刚玉5‑40份、高铝矾土35‑80份、蓝晶石5‑35份、硅微粉0.5‑5份、粘土0.1‑5份、氧化锆粉0.1‑4份、减水剂0.1‑1份。该中间包火泥不含铬，可避免铬污染；并通过适宜的原材料粒度级配，降低了火泥的粘稠度，便于现场施工；通过添加氧化锆，利用其高温下相变增韧原理，大幅提升火泥高温抗折强度，在使用时更耐高温钢水冲刷，通过添加蓝晶石与含Al2O3原料，利用蓝晶石高温下相变以及二次莫来石化产生的膨胀，弥补火泥因添加液体导致的收缩，避免火泥与中包水口之间出现缝隙，解决渗钢问题。
Anti-seepage steel environment-friendly tundish fire clay, preparation method and construction method
The invention provides anti-seepage steel environment-friendly tundish fire clay, a preparation method and a construction method, and the anti-seepage steel environment-friendly tundish fire clay comprises the following preparation raw materials in parts by mass: 5-40 parts of white corundum, 35-80 parts of high bauxite, 5-35 parts of kyanite, 0.5-5 part of silica powder, 0.1-5 part of clay, 0.1-4part of zirconium oxide powder and 0.1-1 part of a water reducing agent. The tundish fire clay does not contain chromium, so that chromium pollution can be avoided; the viscosity of the fire clay isreduced through proper raw material particle size distribution, and field construction is facilitated; by adding zirconium oxide and utilizing the phase transformation toughening principle at the hightemperature, the high-temperature breaking strength of the fire clay is greatly improved, and the fire clay can resist to high-temperature molten steel scouring in the using process; and by adding kyanite and Al2O3-containing raw materials and using phase transformation at the high temperature of kyanite and expansion generated by secondary mullite, shrinkage, caused by liquid adding, of the fireclay is made up, gaps between the fire clay and the tundish nozzle are avoided, and the problem of steel seepage is solved.
本发明提供一种防渗钢环保中间包火泥、制备方法及施工方法，防渗钢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：白刚玉5‑40份、高铝矾土35‑80份、蓝晶石5‑35份、硅微粉0.5‑5份、粘土0.1‑5份、氧化锆粉0.1‑4份、减水剂0.1‑1份。该中间包火泥不含铬，可避免铬污染；并通过适宜的原材料粒度级配，降低了火泥的粘稠度，便于现场施工；通过添加氧化锆，利用其高温下相变增韧原理，大幅提升火泥高温抗折强度，在使用时更耐高温钢水冲刷，通过添加蓝晶石与含Al2O3原料，利用蓝晶石高温下相变以及二次莫来石化产生的膨胀，弥补火泥因添加液体导致的收缩，避免火泥与中包水口之间出现缝隙，解决渗钢问题。
Anti-seepage steel environment-friendly tundish fire clay, preparation method and construction method
一种防渗钢环保中间包火泥、制备方法及施工方法
HU LINGJUN (Autor:in)
19.02.2021
Patent
Elektronische Ressource
Chinesisch
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