Process for the galvanic obtaining of copper powder

Inventia se refera la metalurgia pulberilor, in particular la un procedeu galvanic de obtinere a pulberii de cupru. Procedeul include utilizarea unui electrolit, care contine, kg/m3: CuSO4·5H2O 44...55, H2SO4 (d=1,84) 400...550, si a unei surse monofazate de curent. Electroliza se efectueaza la temperatura electrolitului de 288...298 Ę, densitatea catodica a curentului de 0,1...1,0 kA/m2, utilizand sursa monofazata de curent, care consta dintr-un comutator, o punte redresoare, un pol al careia este conectat la clema pozitiva, iar al doilea - la un circuit inductiv-capacitiv, format dintr-un bloc capacitiv si un bloc inductiv si conectat prin intermediul unui rezistor variabil la clema negativa, la intrarile puntii redresoare este conectat un transformator monofazat, totodata blocul inductiv este executat din cateva bobine separate, amplasate pe un miez magnetic unic cu posibilitatea conectarii selective, avand inductivitatea de 5...15 H, iar blocul capacitiv este format din condensatoare polare conectate in paralel avand capacitatea conturului de 0,015...0,025 F. The invention relates to the powder metallurgy, particularly to a process for the galvanic obtaining of copper powder.The process includes the use of an electrolyte, containing, kg/m3: CuSO4·5H2O 44...55, H2SO4 (d=1.84) 400...500, and a single-phase current source. The electrolysis is carried out at the electrolyte temperature of 288...298 K, the current cathodic density of 0.1...1.0 kA/m2, using the single-phase current source, consisting of a switch, a rectifier bridge, one pole of which is connected to the positive terminal, and the second one - to an inductive-capacitive circuit, consisting of a capacitive block and an inductive block and connected by means of a variable resistor to the negative terminal, to the inputs of the rectifier bridge is connected a single-phase transformer, at the same time the inductive block is made of several separate coils, placed on a single magnetic core with the possibility of selective connection, having an inductivity of 5...15 H, and the capacitive block consists of polar capacitors connected in parallel, having the capacity of circuit of 0.015...0.025 F.