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The multi-stage countercurrent extraction process of the laboratory centrifuge is that the feed liquid is added from the left side, the solvent is added from the right side, and the two-phase countercurrent flows. The composition of the two-phase changes step…

The main forms of titanium in the earth’s crust are titanium dioxide and titanate, and usually coexist with fe, ca, mg, si, al, mn and rare earth elements. According to statistics, there are more than 140 kinds of titanium minerals,…