1. Raw material factors
The higher the grade of aluminum particles used in the production of ferrotitanium, the more beneficial it is to the reduction reaction. Generally, aluminum particles containing more than 98% aluminum are used.
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Lime is used as a flux in the furnace charge, which can lower the melting point of the slag, improve the fluidity of the slag, promote the sinking of suspended metals, and prevent the combination of titanium oxide and aluminum oxide, which is beneficial to improving the recovery rate of titanium.
2. Unit thermal effect
The factors that affect the unit thermal effect are: ①The heat of chemical reaction of the charge. ②The physical heat brought into the charge. The heat of chemical reaction is mainly determined by the grade and batching quantity of materials such as ilmenite concentrate, rutile, potassium chlorate and aluminum particles, while the physical heat is mainly determined by the roasting temperature of ilmenite concentrate and rutile.
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3. Allocation coefficient
The recovery rate of titanium increases as the amount of aluminum increases, but adding too much aluminum will reduce the unit heat effect of the reaction, thicken the slag, and easily cause the alloy aluminum content to exceed the standard, affecting product quality.
