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在浮选理论中,关于矿粒表面电化学性质与它们吸附能力之相互联系的问题至今还研究得不夠庖惶氐愠晌疚奶剿魅范承┑缁灾视胗退嵩陬闾蟊砻婀套偶涞南嗷チ档哪康摹?钽铁矿[(Mn,Fe)·(Ta,Nb)_2O_6]具有显著的导电率,其值为5·10~(-7)欧姆~(-1)厘米~(-1)左右[1],可以列入半导体物质一类中。利用钽铁矿的导电性,我们在蒸馏水中、在有H~+和OH~-离子存在的水溶液中,以及不同浓度的油酸中测定了矿物表面的电极电位。利用测定双电层电容的变化,确定了零电荷电位并计算了油酸的吸附电位。
In the flotation theory, the question of the interrelationship between the electrochemical properties of mineral particles on the surface and their adsorption capacity has not been well studied so far. Tantalite [(Mn, Fe) · (Ta, Nb) _2O_6] has a significant electrical conductivity, the value of 5 · 10 ~ (- 7) ohm ~ (-1) cm ~ (-1) around [1], can be included in the semiconductor material category. Using the conductivity of tantalite, we measured the electrode potential on the mineral surface in distilled water, in aqueous solutions with H ~ + and OH ~ - ions, and with varying concentrations of oleic acid. The determination of the zero charge potential and the calculation of the oleic acid adsorption potential were performed by measuring the change of the electric double layer capacitance.