Change rule of silicon content in alloy during smelting process of high carbon ferrochrome
In the smelting process of high carbon ferrochrome, the silicon content of the alloy actually only represents the average silicon content of the molten iron accumulated in the lower part of the furnace cylinder during the two iron intervals, while the silicon content of the metal in different areas of the furnace is not the same during the smelting process.
(1) Alloy silicon-containing increase zone: from the bulk material layer to the junction of the molten layer and residual coke layer, with the metal particles sinking to the depth of the furnace cylinder, the alloy silicon-containing increase.
(2) Alloy containing silicon falling zone: from the junction layer of molten layer and residual coke to the iron outlet.
Silicon-containing unstable region of alloy: refers to the bottom of the furnace iron layer, for the same electric furnace in a certain period of time, the molten iron content of silicon is basically stable, but due to the different mineral species, with the change of time and the change of the thickness of the iron layer, the silicon content has some changes, so it is called the silicon-containing unstable region.
