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【FIRECLAY BRICK】

　Fireclay brick belongs to Al2O3-SiO2 series. its alumina content is at the range of 15～45﹪. These fireclay bricks are made from refractory clay and calcined clay (chamotte). Ordinary fireclay bricks are so cheap that they are widely applied in industrial furnaces. Special fireclay bricks have the characteristics of low porosity、high mechanical strength and good resistance to creep deformation .

◎　一般火黏土磚 Ordinary Fireclay Brick
＼　代號 Brand 特性質Properties	FC-34	FC-33	FC-32	FC-30
耐火度(SK) Refractoriness	＞34	＞33	＞32	＞30
氣孔率(%) Apparent Porosity	≦23	≦23	≦23	≦23
體密度(g/cm3) Bulk Density	≧2.10	≧2.00	≧1.95	≧1.85
耐壓強度(kg/cm2) Compressive Strength	≧350	≧350	≧300	≧250
荷重耐火度(T2)℃ Refractoriness Under Load	＞1350	＞1350	---	---
高溫膨脹率(%) Expansion at 1000℃	＜0.6	＜0.6	＜0.6	＜0.6
熱傳導率(kcal/m.hr.℃) 500℃ Thermal Conductivity 1000℃	0.9 1.2	0.8 1.0	0.8 0.9	0.7 0.8
化學成份 (%) 　Al2O3 Chemical Composition SiO2	≧42 ≦55	≧38 ≦60	≧34 ≦63	≧30 ≦67
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

◎　特殊火黏土磚 Special Fireclay Brick
＼　代號 Brand 特性質Properties	BF5	BF4	BF3	LDS
耐火度(SK) Refractoriness	＞35	＞34	＞33	＞28
氣孔率(%) Apparent Porosity	≦16	≦16	≦16	≦14.5
體密度(g/cm3) Bulk Density	≧2.30	≧2.25	≧2.20	≧2.20
耐壓強度(kg/cm2) Compressive Strength	≧550	≧500	≧500	≧300
荷重耐火度(T2)℃ Refractoriness Under Load	＞1480	＞1450	＞1430	＞1450
高溫膨脹率(%) Expansion at 1000℃	＜0.6	＜0.6	＜0.5	＜1.2
熱傳導率(kcal/m.hr.℃) 500℃ Thermal Conductivity 1000℃	1.2 1.4	1.1 1.3	1.0 1.2	0.8 1.0
化學成份 (%) 　Al2O3 Chemical Composition SiO2	≧43 ≦55	≧40 ≦56	≧36 ≦60	≧18 ≦78
用途 Applications	低氣孔 Low porosity	低氣孔 Low porosity	低氣孔 Low porosity	蠟石質 Pyrophyllite