The bauxitic clay samples from Henan and Hunan have well situated Al2O3:SiO2 proportion,which is a good kind of raw material of high intensity refractory material and ceramic sphere.
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释义
河南和湖南样品铝矾土铝硅配比适中,是生产高强度耐火材料和陶瓷球的较好原料;
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