人工硫化亜鉛および硫化力ドミウムに対する重金属塩の作用
1971 年 87 巻 994 号 p. 17-22
詳細
1971 年 87 巻 994 号 p. 17-22
The electron diffractive investigation which related to the researches of the surface reactions with special reference to the flotation mechanism of sphalerite has been extended to the case of the artificial zinc sulfide and cadmium sulfide.
1) It has been confirmed that aqueous solutions of silver nitrate and lead acetate react with the artificial zinc sulfide to produce well developed crystallite of metallic silver and a lead sulfide at room temperature, respectively. In aqueous solution of copper (II) sulfate and cadmium sulfate crystallites of reaction product were not produced on the zinc sulfide at room temperature.
2) In aqueous solution of silver nitrate, a crystallite of silver sulfide was produced on cadmium sulfide at room temperature. But in an aqueous copper (II) sulfate solution the crystallite of copper sulfide was not produced.
3) At a temperature over 80°C, all of the products that were not obtained in crystallites at room temperature were obtained as crystallites. In an aqueous cadmium sulfate solution, cadmium sulfide was produced on the zinc sulfide. In a copper (II) sulfate solution, copper sulfide of zinc sulfide type was produced at early reaction time, and a copper sulfide of covellite type was obtained successively on the zine sulfide or cadmium sulfide.
4) In an aqueous copper (II) sulfate solution, copper sulfide of covellite type was obtained on an evaporated film of zinc sulfide at room temperature by surface properties of the zinc sulfide (e.g., cleavage face of single crystal, artificial powder, evaporated film, etc).
