| 摘要 |
PURPOSE:To obtain zinc alloy powder with little oxide generation on the particle surface by mixing soluble mercury salt, a soluble salt aqueous solution of a specific tertiary metal, and zinc alloy powder and surface-treating the mixture, removing a mother liquid and washing it, then quickly dehydrating and drying it by means of hydrocarbon halide. CONSTITUTION:A soluble salt aqueous solution of soluble mercury salt or an element selected among I b, IIb, IIIb, IVb, and Vb groups and zinc alloy powder are stirred and mixed, and the mixture is surface-treated and amalgamated. Next, a mother liquid is removed, then it is washed and the washing liquid is removed. The wet zinc alloy powder thus obtained is fed to a dehydrating tank, and it is immersed in a hydrocarbon halide liquid containing a small quantity of a surface active agent or low-quality alcohol such as trichloro trifluoroetane to remove the moisture. Next, it is exposed in the vapor of hydrocarbon halide and is quickly dehydrated and dried. According to such a method, zinc alloy powder for an alkaline cell with an amalgamation factor of 0-3wt% can be produced in a short time. |
