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火法炼铜过程中要消耗大量镁质耐火材料,主要是烧结镁砖和镁铬砖。据不完全统计,全国火法炼铜厂家一年消耗烧结镁砖约5000吨,镁铬砖近万吨。耐火材料在使用过程中约有1/3—1/2被浸蚀进入冶金渣中,残余部分在冶金炉修理时以废镁砖予以处理。不少单位将之露天堆置。不但污染了环境,而且也浪费了国家资源;还有的单位将其与冶金废渣一并丢弃,实为可惜。
Fire melting copper process to consume a large number of magnesia refractory, mainly sintered magnesia brick and magnesia-chrome brick. According to incomplete statistics, the country’s pyrotechnic copper producers consume about 5,000 tons of sintered magnesia bricks and nearly 10,000 tons of magnesia-chrome bricks annually. About 1 / 3-1 / 2 of the refractory material is etched into the metallurgical slag during use, and the remaining part is treated with the waste magnesia brick when the metallurgical furnace is repaired. Many units will be stacked in the open air. Not only pollute the environment, but also a waste of national resources; there are other units to be discarded with metallurgical waste, it is a pity.