In the given work research of material structure of a radio-electronic breakage is conducted. Concentrates with different mineralogical composition selectively obtained. A study on the separate processing of concentrates is conducted in order to enhance extraction of precious metals.
The increasing need for precious metals causes necessity of development of secondary metallurgy. Now, the important condition of processing of waste of the radio-electronic industry is the fullest extraction of precious metals and reduction of weight of the rests. Assumptions of possible options of behavior of precious metals depending on conditions of conducting process of electrolysis on the basis of charts of Purbe are given.
By working out of new technologies for fusion of sulphidic concentrates on matte and hardware registration to them special attention it is necessary to give possibilities of management of oxidation degree of malt in a reactionary zone and uniformity of oxidation process. In this connection development of the oxidation theory and behavior of sulfides in malt is of great importance for designing of fusion devices of sulphidic concentrates and revealing of management possibility of them.
In the given work research of material structure of a radio-electronic breakage is conducted. Concentrates of various structure are received selectively A study of the separate processing of copper-silver and iron-nickel cobalt concentrates is conducted.
In the given work assessment of raw materials is conducted. Concentrates with different mineralogical composition selectively obtained. A study on the separate processing of concentrates is conducted in order to enhance extraction of noble metals.
The question of electronic scrap processing concentrates of varying composition. During the oxidative electrolysis smelting electronic scrap it became clear that the electrolyte composition is variable. And this complicates the whole technology of purification of the electrolyte, making it cumbersome and not profitable from an economic perspective. To improve the technology was considered by the option of separate processing of iron-nickel cobalt and copper silver concentrates.
The study was carried out in order to find technological conditions that allow anodic dissolution of metal concentrate of radio-electronic scrap without difficulties caused by anode passivation. The thermodynamic probability of sufficiently complete oxidation of impurities included in the metal concentrate was established. The composition of refining slag allowing to bind oxidized impurities in slag is selected. Time dependence of oxidation of impurities by air due to application of radial-axial tuyere is shown. It is indicated that for 15min of blowing it is possible to prepare the metal-concentrate alloy for successful anodic dissolution in sulfuric acid electrolyte.
The results of industrial processing of waste containing precious metals at the stages of disassembly, sorting and enrichment of radio-electronic scrap, melting and electrolysis carried out in industrial conditions of the operating enterprise are presented.