Gas permeability controlling method for blast furnace
专利汇可以提供Gas permeability controlling method for blast furnace专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent bridging, channeling, etc. in a blast furnace and stabilize the furnace conditions by grasping the gas permeability of a burden at high temp. and the furnace conditions with a tester and regulating the burden conditions to the mean permeation resistance of the burden at the high temp. part in accordance with the furnace conditions. CONSTITUTION:The above tester is composed of high temp. reaction furnace 1 using Tammann furnace, loading unit 2, molten droppings collector 3, burden shrinkage measuring unit 4, burden permeability measuring unit 5, reducing gas compsn. and flow rate controller 6, reducing gas preheater 7, gas analyzer 8 and transformer 9 provided with a program temp. controller. The permeation resistance of a softening fused sample of raw materials charged is measured with unit 5 measuring the differential press. of the sample layer between the upper and lower parts. The raw materials are heated under conditions simulated to those in actual operation of a blast furnace, the relation among the permeation resistance, the shrinkage rate and gas velocity is investigated, and the operational conditions are so regulated that the permeation resistance at high temp. becomes a desired value. This regulation is applied to the actual operation to control the permeability in the furnace, thereby eliminating poor conditions such as bridging and channeling.，下面是Gas permeability controlling method for blast furnace专利的具体信息内容。
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