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    中频炉的炉壁内衬能使用多长时间？ 1 . 中频炉炉壁内衬的砌筑料多采用石英砂和高铝土料。高铝土料较适应500kg以下的中频炉，500kg以上中频炉炉壁内衬制作,则采用干式石英砂。 2.熔炼炉用石英砂料最合适。石英砂料材料由天然矿石精选加工而成，其质量好坏主要取决与SiO2含量的高低及其粒度配方。改变炉壁内衬的制作可以提高炉龄，酸性炉壁内衬是用酸性氧化物制作的炉壁内衬。用于制作酸性炉壁内衬的氧化物主要为SiO2。几乎所有的酸性炉壁内衬都是用SiO2为主的耐火材料制作，特别适用于5-30T容量的大型感应炉。通过试验，石英砂理化指标第1种的膨胀系数为7%～9%，第2种的膨胀系数为0.5%～2%，第2种和粒度较合适中频炉的炉壁内衬的使用。 How long can the inner lining of the induction melting furnace be used? 1. The masonry materials for the lining of the furnace wall of the induction melting furnace are mostly quartz sand and high alumina materials. High alumina material is more suitable for induction melting furnaces below 500kg, and the furnace wall lining of induction melting furnaces above 500kg is made of dry quartz sand. 2. Quartz sand is most suitable for smelting furnace. Quartz sand material is made of natural minerals, and its quality mainly depends on the content of SiO2 and its particle size formula. Changing the production of the furnace wall lining can increase the furnace life. The acid furnace wall lining is a furnace wall lining made of acid oxide. The oxide used to make the lining of the acid furnace wall is mainly SiO2. Almost all acid furnace wall linings are made of refractory materials based on SiO2, which are especially suitable for large-scale induction furnaces with a capacity of 5-30T. Through experiments, the first type of physical and chemical indicators of quartz sand has an expansion coefficient of 7%-9%, and the second type has an expansion coefficient of 0.5%-2%. The second type and particle size are more suitable for the use of the furnace wall lining of the induction melting furnace. .