Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of refractory materials and especially relates to an acidic refractory material for an induction furnace. The acid refractory material comprises the following raw materials in percentage by weight: 50-70% of silica sand; 10-20% of fused quartz, 2-10% of boric acid or boric anhydride; 5-15% of zirconium oxide, 5%-10% of calcium oxide, and 5-15% of magnesium oxide, wherein the silica sand is composed of a plurality of silica sand with different particle sizes, and the mass percentages of the silica sand with different particle sizes relative to the total mass of the silica sand are as follows: 35-55% of silica sand with the particle size of 0-1mm, 25-45% of silica sand with the particle size of 1-4mm and 20-45% of the silica sand with the particlesize of 4-8mm. Silica sand with different particle sizes is mixed according to a certain proportion, and fused quartz, a sintering agent and a hardening accelerator are added into the silica sand, the corrosion resistance, the permeation resistance and the rapid cooling and rapid heating resistance of the refractory material are improved, the thermal expansion coefficient of the refractory material is small, and the service life of the product is long.
本发明涉及耐火材料技术领域，尤其涉及一种感应电炉用酸性耐火材料，包括以下重量百分比的原料，硅矿砂为50~70%，电熔石英为10~20%，硼酸或硼酐为2~10%，氧化锆为5%~15%，氧化钙为5%~10%，氧化镁为5%~15%，其中所述硅矿砂由多种不同粒径的硅矿砂组成，各粒径硅矿砂相对硅矿砂总量的质量百分比分别为：粒径为0~1mm的硅矿砂为35~55%，粒径为1~4mm的硅矿砂为25~45%，粒径为4~8mm的硅矿砂20~45%。本发明采用不同粒度的硅矿砂按照一定的比例混合，并在硅矿砂中加入电熔石英、烧结剂和促硬剂，提高耐火材料制品的耐腐蚀性，抗渗透性和抗急冷急热性，且耐火材料制品的热膨胀系数小，制品使用寿命长。
The invention relates to the technical field of refractory materials and especially relates to an acidic refractory material for an induction furnace. The acid refractory material comprises the following raw materials in percentage by weight: 50-70% of silica sand; 10-20% of fused quartz, 2-10% of boric acid or boric anhydride; 5-15% of zirconium oxide, 5%-10% of calcium oxide, and 5-15% of magnesium oxide, wherein the silica sand is composed of a plurality of silica sand with different particle sizes, and the mass percentages of the silica sand with different particle sizes relative to the total mass of the silica sand are as follows: 35-55% of silica sand with the particle size of 0-1mm, 25-45% of silica sand with the particle size of 1-4mm and 20-45% of the silica sand with the particlesize of 4-8mm. Silica sand with different particle sizes is mixed according to a certain proportion, and fused quartz, a sintering agent and a hardening accelerator are added into the silica sand, the corrosion resistance, the permeation resistance and the rapid cooling and rapid heating resistance of the refractory material are improved, the thermal expansion coefficient of the refractory material is small, and the service life of the product is long.
本发明涉及耐火材料技术领域，尤其涉及一种感应电炉用酸性耐火材料，包括以下重量百分比的原料，硅矿砂为50~70%，电熔石英为10~20%，硼酸或硼酐为2~10%，氧化锆为5%~15%，氧化钙为5%~10%，氧化镁为5%~15%，其中所述硅矿砂由多种不同粒径的硅矿砂组成，各粒径硅矿砂相对硅矿砂总量的质量百分比分别为：粒径为0~1mm的硅矿砂为35~55%，粒径为1~4mm的硅矿砂为25~45%，粒径为4~8mm的硅矿砂20~45%。本发明采用不同粒度的硅矿砂按照一定的比例混合，并在硅矿砂中加入电熔石英、烧结剂和促硬剂，提高耐火材料制品的耐腐蚀性，抗渗透性和抗急冷急热性，且耐火材料制品的热膨胀系数小，制品使用寿命长。
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