At first, from the raw material link, increase the strength of coke powder project acceptance, improve the detection frequency, to avoid unqualified raw materials. Take care of and check the mining point samples of the silicon ore supplier, ensure the longevity and reliability of low-phosphorus silicon ore input from the source, screen incoming steel chips, and avoid mixing burning of raw iron chips.
Second, from the actual operation and pouring link. Strengthen management countermeasures, strict addition of heavy ironmaking, avoid heavy ironmaking pad mold personal behavior. The original narrow ingot mold was replaced slowly, and the wide ingot mold was selected to expand the cooling countermeasures of molten steel and accelerate the cooling condensation of casting. The casting process performance was improved and the silicon segregation in aluminum alloy was reduced by adopting the compulsory water-cooling cooling ingot mold and the casting strategy of thickness <80cm.
In the warehousing and storage links, improve the management methods and countermeasures of ferrosilica warehousing, ensure the qualified ferrosilica warehousing, do a good job of rainy season preparedness. The thickness of the ferro-silicon ingot is not easy to be too thick to reduce the degree of segregation of the silicon content of ferro-silicon. Strictly control the silicon content of ferrosilicon, need not be too low. The control of ferrosilicon aluminum, phosphorus and calcium composition, so to use better raw materials, especially in the application of high ash coke, in order to reduce aluminum, phosphorus composition, in order to reduce the calcium composition of ferrosilicon, smelting to avoid adding lime powder. Only by doing this can we avoid the situation of ferrosilicon pulverization.
