Be not development of technology of blast furnace puddling

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  • source:XIMENG CNC Machining
Be not law of blast furnace puddling is to point to eliminate the other beyond blast furnace puddling the method of reductive iron ore. Law of puddling of current blame blast furnace but reduce two kinds big: Direct and reductive law and melt are reductive law. It is the new technology in puddling metallurgy technology. Direct and reductive law is to show in iron ore fused temperature issues an iron ore reductive the puddling that becomes sponge iron produces a course, the product makes direct and reductive iron or sponge iron. Because microtherm is reductive, gotten direct and reductive iron fails sufficient cementite, contain carbon consequently inferior (<2 ％ ) , the gangue composition both neither in ore can fuse slagging is taken off except, also cannot by reductive, all gangue impurity in iron ore was withheld almost in reductive iron directly consequently, still need to become steel with electric stove fine in actual production. Electric stove refined is main the task is to fuse remove foreign matter and the part that adjust steel, is not oxidation decarbonization. > as a result of direct and reductive one -- electric stove series connection produces steel, formed a new steely metallurgy to produce technological process; Melt is reductive the law is to point to everything need not the method of cast iron of liquid state of blast furnace smelt. It is need not coke completes process of blast furnace puddling in a container, basically do not change the fundamental that at present traditional iron and steel produces. In recent years, development of law of puddling of blame blast furnace is rapidder, its reason is: (1) need not coke puddling. Metallurgy of high quality of need of blast furnace smelt is anxious, and cooking coal from world reserves character, occupy the 5 ％ of coal total reserve only, and be in short supply with each passing day, the price is higher and higher. Puddling of blame blast furnace can use the cooking coal that be not refine and other the sources of energy to make fuel and reducer. CNC Milling CNC Machining