Furthermore, the value of heat inertia in the hearth of copper refining rotary anode furnace in the reduction phase is so big that smoke temperature change can not quickly respond to the disturbance.
且铜精炼氧化过程炉膛具有很大的热惯性，这直接导致炉膛烟气温度动态响应速度很慢、动态过程时间很长的现象出现。
High purity arsenic trioxid was obtained from the 2nd stage filtrate by reduction with SO2 flue gas, freeze crystallization, water dissolving, filtering and refining.
二段浸出后的滤液用二氧化硫烟道气还原，还原液经冷冻结晶、水溶、过滤、精制后可得纯度较高的精白砷。
Charge calculation of alloying ingredients is of key importance to the reduction of production cost in alloy refining.
如何选择合金配方是降低生产成本的关键。
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