火法精炼 meaning in English

fire refining
firerefining
pyrorefining

Tough - pitch fire - refined high - conductivity copper - refinery shapes
韧性火法精炼高导电性铜精炼型材
Standard specification for tough - pitch fire - refined copper - refinery shapes
火法精炼工业纯铜标准规范.精炼型材
The zinc refining furnace ( new jersey furnace ) is today the most important pyrometallurgical method for the production of zinc very high purity , where the impurities is of different boiling point from the zinc
锌精馏炉( newjersey炉)是利用粗锌中其它杂质成分与锌具有不同沸点，而生产高纯锌最主要的火法精炼方法。