The invention discloses a
processing technology of a high-purity
copper product for space flight and
aviation, which comprises the following steps: acid regulation: 68% electronic-grade
nitric acid and pure water are pumped into an acid regulation tank according to a certain proportion, the pH value is regulated to 3, a
nitric acid electrolyte is prepared, and then the
nitric acid electrolyte is pumped into a liquid pouring
storage tank; filtering to remove impurities, namely removing impurities from the nitric
acid electrolyte of which the pH is adjusted through a three-stage filter;
electrolysis is conducted, specifically, a 4N high-purity
copper plate serves as an
anode plate, a
titanium plate serves as a
cathode plate, the nitric
acid electrolyte obtained after filtering and
impurity removal is pumped into an electrolytic bath,
electrolysis circulation is started, direct-current
electrolysis is conducted, and 7N high-purity
copper is obtained on the
cathode plate; and vacuum packaging is conducted, specifically, the
cathode plate with copper deposited is cleaned and conveyed to a stripping unit to be stripped, stripped cathode copper is inspected, and vacuum packaging and warehousing are conducted after the cathode copper is inspected to be qualified. Impurities in the production process of the high-purity copper can be effectively removed, the
electrolyte can be purified, the quality requirement of the high-purity copper is met, and meanwhile the industrial production cost of the high-purity copper is further reduced.