| HDD-1 | HDDD-2 | HDD-3 | HDD-4 | HDD-5 |
化學成分（%） Chemical composition | SiO2≥ | 98 | 96 | 96 | 96 | 96 |
Al2O3≤ | 0.7 | 0.6 | 0.6 | 0.5 | 0.4 |
Fe2O3≤ | 0.1 | 0.1 | 0.4 | 0.4 | 0.8 |
冷態耐壓強度（Mpa) Cold crushing strength | 1300℃×3h After firing at | 15 | 15 | 10 | 10 | 25 |
顯氣孔率（％） Ａpparent porosity | 1300℃×3h After firing at | 26 | 26 | 25 | 25 | 23 |
燒後線變化率（％） Linear changing after burnt | 1300℃×3h After firing at | 0～+1.6 | 0～+1.2 | 0～+1.0 |
體積密度（g/cm3） Bulk density | 1300℃×3h After firing at | 2.0 | 2.0 | 2.1 | 2.1 | 2.2 |
耐火度(℃)Refractoriness | 1800 | 1800 | 1780 | 1780 | — |
最大集料粒度(mm) Max. grain size of aggregate | 5 | 4.5 | 4.5 | 4.2 | 4.2 |
施工用量(kg/m3)Amount for construction | 2300 | 2300 | 2300 | 2400 | 2400 |
施工方式Mathod of construction | 振動或搗打Jolt or ramming |
應用 Application | 鋼鐵 steel | 紫銅.黃銅copper brass | 白銅cupronickel | 紫銅.黃銅 青銅 copper brassbronze | 鋁 aluminium |
適應：中頻爐熔化鋼、鐵及有色金屬等. Adaptation：IF steel and non-ferrous metal melting furnace. |
特點Characteristic | 價廉 保溫 節電 不沾渣 快速乾燥 化學結合 耐侵蝕 Cost down Thernalinsulation Economy electricity Nostickresidue Fast drying Chemicalbonded Corrosion resistance |
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