電(dian)熔(rong)(rong)(rong)磚的制造工(gong)藝是(shi)將鋯英石(shi)砂(sha)和(he)工(gong)業氧(yang)化鋁粉按1:1配合(he),外加少(shao)量NaZO(以碳酸(suan)鈉的形式(shi)(shi)加入)、B2O(以硼酸(suan)或硼砂(sha)的形式(shi)(shi)加入)熔(rong)(rong)(rong)劑(ji),混(hun)合(he)均勻(yun),經(jing)1900~2000℃熔(rong)(rong)(rong)化后澆鑄成型,可(ke)(ke)制得含(han) zrO233%的熔(rong)(rong)(rong)鑄磚。在(zai)此基(ji)礎上,采用(yong)部分脫硅鋯英石(shi)砂(sha)作原料,可(ke)(ke)制得含(han)ZrO2 36%~41%的熔(rong)(rong)(rong)鑄磚。
電(dian)熔(rong)磚(zhuan)的(de)巖相(xiang)結(jie)構由剛玉與鋯斜石的(de)共析體和玻(bo)璃相(xiang)組成,從相(xiang)學上講是剛玉相(xiang)和鋯斜石相(xiang)的(de)共析體,玻(bo)璃相(xiang)充填于它們的(de)結(jie)晶之間(jian)。