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.
It is studied bioleaching of copper sulfide ore of Erdenetiin ovoo deposit. It is studied effect of ore size and pH of bacterial solution, the bacteria count of the bacte rial solution on the extraction of copper of bacterial leaching.
Development of the oxidation theory of iron sulphide has great importance for understanding the physical and chemical nature of roasting and revealing possibility of its management .
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 algorithm and system optimal control of two-cycle by stages for mineral separation plant GMK «Pechenganickel». Computer modeling, which allows to determine the optimal set of optimization systems that implement the developed algorithm. A functional diagram of automation, allows the implementation algorithm and a system of optimal control.
This work examined alloys which are belonged to trinary system Cu – Co – S. Macrostructural anaylysis of the above-referenced alloys was carried out. The impact of ferrum on this alloys was demonstrated.
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.
In the given work the problem of gas purification of metallurgical industry is considered. Technology of waste gases recycling process with advanced treatment of tail gases with possibility of full recovery of sulfur containing components is conducted.
In this article the technology of purification from sulfur dioxide is described. This technology was tested in semi-industrial scale. During developing this method it was used regularities of the sorption of sulfur dioxide by manganese nodule in the laboratory scale. This technology has economical significant advantages in building and maintaining costs.
The analysis shows a sharp aggravation of resource replenishment problem on the mining enterprises of the country. The share explored to date active bauxite stocks is 60-68 %. Provision of proven bauxite reserves has reached a critically low level, and a strategic reserve for existing fields is insufficient. The situation is aggravated by the lack of new mining facilities and the discontinuance of exploration. While the resource base preparation in the volume, cost-effective for industrial development, requires 10-15 years with a concentration of significant resources. Unfortunately, in Russia there is no high quality bauxite, which is global alumina industry based on. One solution to this problem is to engage in the Bayer process production the low-quality bauxite with thermochemical pre-conditioning. Despite high energy costs, calcinations condition allows bauxite materials for a variety of technologically harmful contaminants such as organics, sulfide sulfur, carbonates, and post-treatment circulating alkaline solutions to improve the silicon module of bauxite concentrate. On the example of high-silicon chromium Severoonezhsk bauxite shows the positive role of calcinations in their processing and increase the possibility of multiple silicon module of bauxite ore, successfully processed by the Bayer method. Laboratory tests confirmed by the experimental-industrial tests.
It is studied influences of bacterial solution on the соpper-molybdenum sulfide ore. The studies on crushing and on changes in density of copper-molybdenum sulfide ore before treatment and after treatment of the bacterial solution.
Results of desalination extraction chamoisite minerals alkali-containing are presented by solutions. It is shown that the behavior chamoisite at interaction with alkaline solutions depends on a parity orthogonal and monoclinic updatings and degree oxidation. However, prebaking in oxidizing medium these distinctions at the expense of almost complete decomposition chamoisite with formation amorphous aluminum and silicon oxides.
Development of the oxidation theory of iron sulphide has great importance for understanding the physical and chemical nature of roasting and revealing possibility of its management.
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.
Results of desalination thermoactivated siliceous minerals alkali-containing are presented by solutions. Testify that at desilication bauxite it is observed gradual braking dissolution of a dioxide of silicon and alumina oxide at the expense of formation of a shielding layer. The increase in temperatures desalination roasting and the silicon module of initial bauxite leads to increase of factor of braking.
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.
The results of research to determine the optimal conditions of sulphatizing roasting in the complex technology of processing of phosphorus iron-manganese concretions are given.
