This paper analyzed the behaviour of tungsten and arsenic contaminationfactor in phosphorous-arsenic slag under the condition of pressure digestion with NaOH for wolframite concentrate.
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。
2
A considerable portion of electric contact failure is caused by environmental factors, of which dust contamination is an important factor on electric contact reliability.