分析了在黑钨精矿碱压煮条件下，磷砷渣中钨和污染因子砷的行为。
This paper analyzed the behaviour of tungsten and arsenic contamination factor in phosphorous-arsenic slag under the condition of pressure digestion with NaOH for wolframite concentrate.
铈钨电极没有放射性污染，属于绿色环保产品，它仅用很小的电流就可轻松起弧，而且维弧电流也较小。
Cerium-Tungsten Electrode is a nonradiative and green product . It can start performing arc with a low current .
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