METHOD FOR PRODUCING POWDER silver-cadmium oxide and powder of silver-cadmium oxide, obtained by this method

摘要

1. A process for preparing a powder of silver-cadmium oxide comprising coprecipitating the components of the subsequent washing with salt solutions, by drying, thermal decomposition, reduction and granulation, characterized in that the deposition is produced from a mixture of solutions of silver nitrate and cadmium by introducing a mixture of sodium hydroxide solution at 5 ÷ 9 l / min under constant stirring, the process of obtaining hydroxides of silver and cadmium is carried out at a temperature of 15 ÷ 30 ° C, drying is carried out at a temperature of 180 ÷ 250 ° C for 20 ÷ 24 hours, and the term cal reduction of silver oxide, cadmium hydroxide and the decomposition is carried out at a temperature of 450 ÷ 540 ° C for 50 ÷ 60 min.2. A method according to claim 1, characterized in that the density of the silver nitrate solution is 1.4 ÷ 1.45 g / l, the concentration of cadmium nitrate solution is 280 ÷ 320 g / l, the density of the sodium hydroxide solution - 1.10 ÷ 1.20 g / cc, these solutions are taken in the ratio 1: (0,1 ÷ 0,45) :( 0,28 ÷ 0,41) .3. A method according to claim 1, characterized in that, after drying, the thermal reduction and thermal decomposition of the powder was cooled to room temperature and allowed poroshka.4 machining. A method according to claim 3, characterized in that the mechanical processing of powder, silver oxide, cadmium hydroxide and the mixture is carried out by forcing the powder through a mesh having a mesh size of 800 × 800 900 × 900 ÷ mkm.5. A method according to claim 1, characterized in that before the thermal reduction process of silver oxide and thermal decomposition of cadmium hydroxide powder is added to the polyvinyl alcohol solution in an amount of 90 ÷ 100 smna 1 kg of powder Shuffle