| 摘要 |
PURPOSE:To prevent working environment pollution caused by mercury by mixing an alkali metal and/or alkaline earth metal, or a specific metal element with molten zinc, by atomizing the molten zinc ally to obtain zinc alloy powder, and by amalgamating the zinc alloy powder with mercury or a mercury compound in a dry process. CONSTITUTION:An alkali metal and/or alkaline earth metal, or in addition to these metals, at least one metal selected from the group consisting of In, Pb, Cd, Tl, and Ga are mixed in molten zinc to obtain a molten zinc alloy. It is atomized to obtain zinc alloy powder. The zinc alloy powder is amalgamated with mercury or a mercury compound in a dry process. The mercury compound is a compound of mercury with at least one metal selected from In, Pb, Cd, and Tl. By using this amalgamated zinc alloy powder as a negative active material in an alkaline dry battery, gas evolution is retarded regardless of a low amalgamation rate. Environmental pollution caused by mercury can be minimized. |
