<研究>青化溶液に於ける金の溶解に關する研究(第 4 報) : 金粒の大さとその溶解時間に就ての考察

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The author studied the relation between the size of gold particle and the time of dissolution in cyanide solution in the case where the rate of dissolution is constant. He obtained the following general formula : t_1=ρ/υn_1,where t_1 denotes the time required for the complete dissolution of gold particle in hrs, ρ the specific gravity of gold, υ the rate of dissolution of gold in grams per (cm)^2 per hr and n_1 the length of radius of the maximum sphere involved in the particle which is supposed to be of ovaloidal shape. In a previous research the author obtained υ=1.8mg/(cm)^2/hr. and the time t_1 required for the complete dissolution is calculated for the diameter restricted between (0μ and 100μ) using the above formula. [table] He compared these deta with the agitation time in Dorr agitator in many cyanide plants, and found that the time of dissolution calculated nearly coincides with the agitation time. This formula may be also employed for the calculation of the time of dissolution of solid into liquid where the rate of dissolution is constant.
東北大学の論文
1944-04-27