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作者们在过去工作的基础上,发展了一种适用于工业浮选的动力学模型,其形式为:sum from i=1 to n(R_(ai))=R_(a∞)[1-(1/multiply from j=1 to i[1+K_m/g{e~(-g sum from j=1 to i-1(t_j))(1-e~(-gt_i))}]]在模型中包含了两个常数,即浮选速度常数的起始平均值 K_m,和关系到浮选速度常数平均值变化速度的均值变化常数 g。因为这个模型包含了浮选速度常数均值变化常数,因此它可适用于一个浮选作业中的各种矿物组合。使用这个模型对加拿大不列颠哥伦比亚省布兰达选矿厂所搜集的数据进行了模型的拟合,拟合结果表明,在包括粗选、扫选、一次精选、一次精选扫选、二次精选以及三次精选等六个作业,黄铜矿、辉钼矿、黄铁矿和全部浮出矿物等四种矿物组合的拟合检验中,都得到了非常令人满意的结果。目标函数的最终值,绝大多数都在10~(-4)以下。所得到的浮选速度常数均值变化常数值表明,在粗选、扫选以及一次精选扫选等作业中,黄铁矿及脉石矿物的浮选速度是递增的。此外在各矿物组合间浮选速度常数值的差别将随着精选次数的增加而减小。文章末处附有电子计算机的部分输出结果。
Based on the work of the past, the authors developed a kinetic model suitable for industrial flotation in the form of: sum from i = 1 to n (R_ (ai)) = R_ (a∞) [1- 1 / multiply from j = 1 to i [1 + K_m / g {e ~ (-g sum from j = 1 to i-1 (t_j)) (1 -e ~ (-gt_i))}]]] in the model Contains two constants, the initial average value of the flotation velocity constant, K_m, and the average change constant, g, relating to the rate of change of the average value of the flotation velocity constant. Since this model contains constants for changing the mean value of the flotation velocity constant Applicable to a variety of mineral assemblages in a flotation operation using this model to model the data collected by the Breda beneficiation plant in British Columbia, Canada. The results of the fit show that the data collected in the roughing, , A selection, a selection of sweep selection, the second selection and three selection of six operations, chalcopyrite, molybdenite, pyrite and all the mineral out of the four mineral combination fitting test , All obtained very satisfactory results.The final value of the objective function, the vast majority are less than 10 ~ (-4) .The resulting constant value of the constant value of the flotation velocity constant table In addition, the flotation rates of pyrite and gangue minerals are increasing in roughing, scanning and a selection of sweepings. In addition, the difference in the flotation velocity constants between the mineral assemblages will vary with fine Select the number of increase and decrease the article at the end with the computer part of the output.