高(gao)鋁(lv)骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)是天然(ran)鋁(lv)礬土礦經(jing)過(guo)(guo)是經(jing)過(guo)(guo)回轉窯煅(duan)燒(shao)的(de)鋁(lv)礬土熟(shu)料(liao)(liao)(liao)(liao)(liao)(liao)，形(xing)成的(de)塊料(liao)(liao)(liao)(liao)(liao)(liao)成為(wei)高(gao)鋁(lv)礬土孰料(liao)(liao)(liao)(liao)(liao)(liao)骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)，也叫耐火骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)，經(jing)過(guo)(guo)揀(jian)選(xuan)的(de)熟(shu)料(liao)(liao)(liao)(liao)(liao)(liao)經(jing)破(po)碎(sui)、篩分工序(xu)，后(hou)可得(de)到不同粒度(du)范圍(wei)的(de)骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)，AL2O3含量(liang)大于90%的(de)稱為(wei)高(gao)鋁(lv)骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)。高(gao)鋁(lv)骨(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)它是耐火澆(jiao)注(zhu)料(liao)(liao)(liao)(liao)(liao)(liao)中的(de)原(yuan)料(liao)(liao)(liao)(liao)(liao)(liao)，它能(neng)和高(gao)鋁(lv)水泥、細粉(fen)、按比(bi)例混(hun)合后(hou)生成強度(du)比(bi)較高的(de)(de)耐火混凝(ning)土(tu)。 在不(bu)定形耐火材料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)配(pei)(pei)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)中(zhong)(zhong)(zhong)，耐火骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)一般分為(wei)(wei)(wei)粗(cu)顆(ke)粒(li)(li)(li)(li)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)、中(zhong)(zhong)(zhong)顆(ke)粒(li)(li)(li)(li)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)和細(xi)(xi)(xi)顆(ke)粒(li)(li)(li)(li)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)。粗(cu)、中(zhong)(zhong)(zhong)、細(xi)(xi)(xi)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)粒(li)(li)(li)(li)徑(jing)(jing)尺(chi)寸范圍(wei)(wei)與骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)臨界粒(li)(li)(li)(li)徑(jing)(jing)(即(ji)粒(li)(li)(li)(li)徑(jing)(jing))有關。如(ru)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)大(da)(da)粒(li)(li)(li)(li)徑(jing)(jing)為(wei)(wei)(wei)8mm時，粗(cu)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)范圍(wei)(wei)為(wei)(wei)(wei)8～3mm，中(zhong)(zhong)(zhong)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)范圍(wei)(wei)為(wei)(wei)(wei)3～1mm，細(xi)(xi)(xi)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)范圍(wei)(wei)為(wei)(wei)(wei)1～0.088mm(或0.074mm)。小(xiao)于(yu)0.088mm(或0.074mm)的(de)(de)稱為(wei)(wei)(wei)粉料(liao)(liao)(liao)(liao)(liao)(liao)(liao)(或稱為(wei)(wei)(wei)基質料(liao)(liao)(liao)(liao)(liao)(liao)(liao))。又如(ru)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)大(da)(da)粒(li)(li)(li)(li)徑(jing)(jing)為(wei)(wei)(wei)3.5mm的(de)(de)，則(ze)粗(cu)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)范圍(wei)(wei)為(wei)(wei)(wei)3.5～1.5mm，中(zhong)(zhong)(zhong)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)為(wei)(wei)(wei)1.5～0.5mm，細(xi)(xi)(xi)骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)粒(li)(li)(li)(li)徑(jing)(jing)為(wei)(wei)(wei)0.5～0.074mm。骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)顆(ke)粒(li)(li)(li)(li)級(ji)配(pei)(pei)應(ying)當是能(neng)達到緊密堆積(ji)(ji)，即(ji)粗(cu)顆(ke)粒(li)(li)(li)(li)相互接觸堆積(ji)(ji)后所(suo)(suo)留下的(de)(de)空(kong)隙(xi)被中(zhong)(zhong)(zhong)顆(ke)粒(li)(li)(li)(li)所(suo)(suo)充(chong)(chong)(chong)填(tian)，中(zhong)(zhong)(zhong)顆(ke)粒(li)(li)(li)(li)充(chong)(chong)(chong)填(tian)后所(suo)(suo)留下的(de)(de)微小(xiao)空(kong)隙(xi)被細(xi)(xi)(xi)顆(ke)粒(li)(li)(li)(li)所(suo)(suo)充(chong)(chong)(chong)填(tian)，由(you)此形成(cheng)骨(gu)(gu)(gu)(gu)架(jia)，其余(yu)的(de)(de)空(kong)隙(xi)由(you)粉料(liao)(liao)(liao)(liao)(liao)(liao)(liao)充(chong)(chong)(chong)填(tian)。但(dan)由(you)于(yu)耐火骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)顆(ke)粒(li)(li)(li)(li)形狀很不(bu)規則(ze)，因此實際(ji)生產上很難取得骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)顆(ke)粒(li)(li)(li)(li)級(ji)配(pei)(pei)。通常骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)級(ji)配(pei)(pei)由(you)試驗確定，一般骨(gu)(gu)(gu)(gu)料(liao)(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)粗(cu)、中(zhong)(zhong)(zhong)、細(xi)(xi)(xi)級(ji)配(pei)(pei)比為(wei)(wei)(wei)35～45：30～40：15～25。