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为提高炼钢铁水温度,酒钢炼铁厂从1990年开始,在140t铁水罐内加自产炭化麦壳作铁水保温剂。炭化麦壳呈片粒状。其主要性能为:灰分约50％。挥发份约10％,固定碳约40％,其中灰分主要成分为SiO_2(含68％);容重0.095g/cm~2;导热系数0.045W/(m·K)。这种炭化麦壳的特点是燃点低,灰分熔点高,散落性好。炭化麦壳采用塑料袋小包装,每袋重5kg,在铁水罐盛满铁水后,立即测量罐内铁水温度。然后迅速向铁水面均匀投入炭化表壳,加入量为铁水量的0.5‰。待铁水罐运至炼钢兑铁水时,
In order to increase the temperature of hot metal in steelmaking, the Jiu Steel Ironworks started to add its own carbonized wheat straw as a hot metal thermal insulation agent in a 140t hot metal tank since 1990. Carbonized wheat straw was tablets grainy. Its main properties are: Ash content of about 50%. Volatile matter of about 10%, fixed carbon about 40%, of which the main component of ash is SiO 2 (containing 68%); bulk density of 0.095g / cm ~ 2; thermal conductivity of 0.045W / (m · K). This charring wheat hull is characterized by low ignition point, ash melting point, scattered good. Carbonized wheat husk plastic bags in small packages, each bag weighs 5kg, the molten iron filled with molten iron, immediately measuring the temperature of the hot metal inside the tank. And then quickly into the molten iron surface carbonized case, add the amount of molten iron 0.5 ‰. To be shipped to hot metal ladle to steel,