low carbon ferro chrome
① The area where the silicon content in the alloy increases: from the bulk layer to the junction of the molten layer and residual coke layer, as the metal particles sink deeper into the furnace, the silicon content in the alloy continues to increase.
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② The area of silicon content decrease in the alloy: from the junction layer of the molten layer and residual coke to the tapping hole.
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③ Alloy silicon unstable region: refers to the iron layer at the bottom of the furnace. For the same electric furnace, the silicon content in this layer of molten iron is basically stable within a certain time range. However, due to different types of minerals, the silicon content varies with time and the thickness of the iron layer, so it is called the silicon unstable region.
