铁合金
鐵閤金
철합금
FERRO-ALLOYS
2015年
3期
19-22
,共4页
镍铁%生产工艺%回转窑%低导镁铝锆砖%微孔镁铝尖晶石合成料
鎳鐵%生產工藝%迴轉窯%低導鎂鋁鋯磚%微孔鎂鋁尖晶石閤成料
얼철%생산공예%회전요%저도미려고전%미공미려첨정석합성료
ferronickel%production process%rotary kiln%low thermal conductivity MAZ bricks%micropore magnesia-alu-mina composite materials
红土镍矿回转窑直接还原生产镍铁工艺，具有渣含量高、波动大、黏度低的特点，对耐火材料性能要求苛刻。试验利用微孔镁铝合成料、高纯烧结镁砂、电熔镁铝尖晶石、锆源细粉为主要原料制备低导镁铝锆砖，该锆砖具有气孔率高、体密低、高热震稳定性的特点，微孔镁铝合成料引入可明显降低材料的导热率和体积密度，降低筒体温度和载荷，进而实现节能降耗的目的，在红土镍矿回转窑中取得了良好的使用效果。
紅土鎳礦迴轉窯直接還原生產鎳鐵工藝，具有渣含量高、波動大、黏度低的特點，對耐火材料性能要求苛刻。試驗利用微孔鎂鋁閤成料、高純燒結鎂砂、電鎔鎂鋁尖晶石、鋯源細粉為主要原料製備低導鎂鋁鋯磚，該鋯磚具有氣孔率高、體密低、高熱震穩定性的特點，微孔鎂鋁閤成料引入可明顯降低材料的導熱率和體積密度，降低筒體溫度和載荷，進而實現節能降耗的目的，在紅土鎳礦迴轉窯中取得瞭良好的使用效果。
홍토얼광회전요직접환원생산얼철공예，구유사함량고、파동대、점도저적특점，대내화재료성능요구가각。시험이용미공미려합성료、고순소결미사、전용미려첨정석、고원세분위주요원료제비저도미려고전，해고전구유기공솔고、체밀저、고열진은정성적특점，미공미려합성료인입가명현강저재료적도열솔화체적밀도，강저통체온도화재하，진이실현절능강모적목적，재홍토얼광회전요중취득료량호적사용효과。
The ferronickel can be produced by laterite-nickel ore direct reduction process in rotary kilns. The method has the feature of high content of slag and volatile, and low viscosity, it requires demanding for the refractory performance. The micropore magnesia-alumina composite materials, high purity sintered magnesia, fused MA spinel and zirconium powder are used as the raw materials to produce low thermal conductivity magnesia-alumina-zirconium (MAZ) bricks, which have high porosity, low bulk density and high thermal shock resistance. The introduction of micropore magnesia-alumina com-posite materials can obviously reduce the thermal conductivity and bulk density of the bricks, so it can reduce the barrel temperature and load, and realize the aim of saving energy, it obtains a good using effect in laterite nickel ore rotary kiln.
