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我厂10吨无芯工频感应炉采用石英砂炉衬。自1971年投产至1975年,炉衬寿命很低,平均寿命仅30炉左右,不仅筑炉频繁,而且无法满足生产需要。从1975年年底开始,我们从原料、炉衬打结、烘炉烧结、使用维护等方面着手攻关,1976年开始,炉衬寿命显著提高,1977年下半年以来,炉衬修补前一般可使用60～80炉,经修补后炉衬总寿命一般超过百炉,最高达231炉。本文根据石英的特性,讨论如何选择用于构筑工频感应炉炉衬的石英砂和确定烘炉烧结规范。众所周知,在铸铁熔炼中,普遍采用石英砂来构筑工频感应电炉内衬。石英砂的品质对炉衬使用寿命有十分重要的影响。因此,一般希望用于构筑工频感应电炉内衬的石英砂十分
I plant 10 tons coreless frequency induction furnace quartz sand lining. Starting from 1971 to 1975, lining life is very low, the average life expectancy is only about 30 furnaces, not only frequent furnaces, and can not meet the production needs. Starting from the end of 1975, we tackled key issues such as raw materials, knot lining, oven sintering, and maintenance. Since 1976, the service life of furnace linings has risen significantly. Since the second half of 1977, the furnace linings can generally be used from 60 to 80 , The total life of the lining after repair generally more than 100 furnaces, up to 231 furnaces. Based on the characteristics of quartz, this paper discusses how to choose the quartz sand used to build the lining of the industrial frequency induction furnace and determine the sintering specification of the ovens. As we all know, in the cast iron smelting, commonly used quartz sand to build power frequency induction furnace lining. Quartz sand quality of the lining life is very important impact. Therefore, it is generally desirable to construct quartz sand for power frequency induction furnace lining