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我国汞的生产多采用直井炉处理含汞块矿的冶炼方法,积累了不少经验,但对于粉碎矿石还没有很好的处理。粉碎矿的处理,国外大多采用回转窑或多膛炉,汞回收率为90～95%。国内目前正在进行采用沸腾焙烧炉处理粉状矿的试验研究。1961年,有的炼汞厂曾利用冶炼块矿的直井炉进行过处理粉碎矿石的试验,所用试料粒度为0～30毫米,试验时发现如下几个问题:
Mercury production in our country mostly adopts the smelting method for treating mercury-containing lump ore by vertical shaft furnace furnace, and has accumulated a lot of experience, but it has not been well handled for crushing ore. Crushing ore processing, most of the foreign rotary kilns or more hearth furnace, mercury recovery rate of 90 to 95%. China is currently undergoing boiling roaster treatment of pulverized ore experimental study. In 1961, some mercury-smelting plants had used the straight shaft furnace of smelting lump ore to treat the crushed ore. The particle size of the sample used was 0-30 mm and the following problems were found during the test: