我厂的粗锡精炼除铅作业,几十年来一直是采用放液锅进行人工结晶放液。生产1号精锡,需要往复进行18～19次的放液操作;产2号精锡也需放液14～15次。人工放液作业的劳动强度大,生产率低,且不安全。 在厂党委的领导下,我厂精炼工段职工与昆明工学院冶金系的师生组成三结合试验组。他们在毛主席革命路线的指引下,破除迷信,解放思想, I plant crude tin refining operations in addition to lead, for decades has been the use of artificial liquid drain pan pouring. Production of fine tin 1, need to reciprocate 18 to 19 times the release of liquid operations; No. 2 fine tin also need to release 14 to 15 times. Manual draining is labor-intensive, low-productivity, and unsafe. Under the leadership of the factory party committee, I plant refining section of staff and Kunming Institute of metallurgy teachers and students to form three combined test group. Under the guidance of Chairman Mao’s revolutionary line, they have broken superstitions, emancipated their minds,