Investigations were carried out on coal tailings by conventional cell and column flotation techniques. Tests were conducted to assess processing coal tailings of Alborz Markazi coal washing plant in Iran by column flotation. The effects of reagent type/dosage were investigated with conventional flotation and their results were used in the performance of column flotation. Also the effects of the...

the synthesis of heat integrated multi-component distillation systems is complex due to its huge search space for structural combination and optimization computation. to provide a systematic approach and tools for the synthesis design of distillation systems, a new method for modeling heat integrated columns is presented, and the operating cost objective function is minimized by improved harmon...

With the aim to improve the machining precision of a gantry machining center, bionic optimization design for ribs structure of its column was investigated. Firstly, based on the analysis of honeycomb structures, three kinds of bionic columns were discussed and simulated by finite element analysis method. The column structure with the best comprehensive performance was achieved according to the ...