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【BAUXITE HIGH ALUMINA BRICK】

　The main raw materials of bauxite bricks are bauxites. Mixing with andalusite, high alumina aggregate,and clay, various high alumina bricks(Al2O3 content 45～80﹪)can be made. Owing to high refractoriness, they do not vitrify or soften at high temperature and have good resistance to the corrosion of slag or metallic oxides.

＼　代號 Brand 特性質Properties	BAX-85	BAX-80	BAX-70	AL80
耐火度(SK) Refractoriness	＞39	＞39	＞38	＞39
氣孔率(%) Apparent Porosity	≦22	≦22	≦22	≦24
體密度(g/cm3) Bulk Density	≧2.80	≧2.70	≧2.60	≧2.60
耐壓強度(kg/cm2) Compressive Strength	≧700	≧600	≧600	≧500
荷重耐火度(T2)℃ Refractoriness Under Load	＞1630	＞1600	＞1570	＞1580
Al2O3(%)	≧84	≧80	≧72	≧80
高溫膨脹率(%) Expansion at 1000℃	＜0.8	＜0.7	＜0.6	＜0.8
再熱線變化率 after1500℃×2hrs Permanent Linear Change (%)	±0.6	±0.6	±0.5	±0.5
熱傳導率(kcal/m.hr.℃) 500℃ Thermal Conductivity 1000℃	2.2 2.4	2.0 2.2	1.6 1.8	2.0 2.2
用途 Applications	旋窯非鐵金屬爐Ratory furnaceNon-Ferrous metal furnace	旋窯盛鋼桶 Ratory furnaceLadle	高爐旋窯 Blast furnaceRatory furnace	各式窯爐 Various furnaces

＼　代號 Brand 特性質Properties	AL70	AL60	AL55	AL50
耐火度(SK) Refractoriness	＞38	＞37	＞36	＞35
氣孔率(%) Apparent Porosity	≦24	≦23	≦23	≦23
體密度(g/cm3) Bulk Density	≧2.50	≧2.30	≧2.25	≧2.20
耐壓強度(kg/cm2) Compressive Strength	≧450	≧400	≧400	≧360
荷重耐火度(T2)℃ Refractoriness Under Load	＞1550	＞1500	＞1480	＞1450
Al2O3(%)	≧70	≧60	≧55	≧50
高溫膨脹率(%) Expansion at 1000℃	＜0.6	＜0.6	＜0.6	＜0.6
再熱線變化率 after1500℃×2hrs Permanent Linear Change (%)	±0.5	±0.5	±0.5	±0.4
熱傳導率(kcal/m.hr.℃) 500℃ Thermal Conductivity 1000℃	1.5 1.8	1.3 1.6	1.2 1.5	1.1 1.3
用途 Applications	各式窯爐Various furnaces	各式窯爐Various furnaces	各式窯爐Various furnaces	各式窯爐Various furnaces