SU939092A1 - Method of controlling combination concentration process of sulphide oxidized ores - Google Patents

Description

(54) METHOD OF MANAGEMENT BY COMBINED PROCESS OF ENRICHMENT OF SULFIDE-OXIDATED ORES

one

The invention relates to the flotation enrichment and hydrometallurgical processing of mineral raw materials and can be applied, for example, in the enrichment of copper sulphide, shifted and oxidized

ores. A method of enrichment is known, consisting in the geometrization of industrial ore grades in the volume of the ore deposit and separate enrichment of these grades in the independent sections of the beneficiation plant 1. The known method is suitable only if each of the selected industrial ore grades is characterized by significant stocks and takes strictly defined position in the volume of the ore deposit.

There is a known method of controlling the combined process of sulphide-oxidized ores enrichment by changing the structure of the process according to the content of the useful component 2.

The known method involves changing the structure of the flotation process on the basis of the formation of optimal variants of the flotation schemes by arranging the flotation chambers, which ensures optimization only within narrow limits of variations in the properties of the feedstock.

Studies have shown that the Ulokan copper deposit is characterized by frequent changes of ore types, which differ sharply in the ratio of sulphides and copper oxides. The single content of the useful component does not characterize the grade of the mineral raw materials for a given field, and the most complete extraction of metals is ensured only with a fundamental reorganization of its processing methods using simple flotation concentration schemes or using a combined flotation-hydrometallurgical scheme.

The purpose of the invention is to improve the accuracy and efficiency of management of the enrichment process.

This goal is achieved by measuring the content of sulfur, copper, iron and magnetite, determining the ratio of the copper content to iron, additionally the ratio of the ratio of the contents of copper and iron to the sulfur content and magnetite; and when the magnitude of the ratio of the binder to iron content is determined from a given ore, the ore is enriched in the flotation process, when the deviation of an additional ratio from a given ore is enriched in a hydrometallurgical process, . FIG. Figure 1 shows the location of 13 observations on the plane of the first two main components Ui and LJ2, obtained according to five indications of the phase and chemical composition of the samples; in fig. 2 - the location of the 13 observations of the first and third main components Ui and Uj; in fig. 3 is a block diagram of an installation for implementing the method. For the Udokan copper sulphide and oxidized ore deposit, the main enrichment properties are determined by the phase composition: the content of primary (Secondary Dioxide secondary (Cugj), oxidized free (Cuo) and oxidized bound (Cucg) differences of copper and total copper (Cu)). thirteen representative samples of ore from the field. The principal component method was used for typing. For convenience of interpreting the obtained projection, the names of the signs with The corresponding loads (in brackets) on each main component. Each of the groups of points selected in Fig. 1 has similar technological properties. The first group of points corresponds to easily enriched samples, on which more than 80% is extracted by conventional flotation methods; the second group of points is assigned To a series of ores with the extraction of 75- a third group of points identified as difficult to enrich the variety with the extraction of copper below 60-75%. According to the classification, the first type should be directed to flotation concentration, the second to the combined flotation and hydrometallurgical process, and the third to storage, pic; since there are no effective methods for its processing at the present time. Characteristics of phase composition assessment used for classification cannot provide continuous analysis of the quality of mineral raw materials in the process, therefore a re-classification was built based on characteristics that modern technology allows to measure continuously: the content of sulfur, characterizing the amount of sulfide substance, and the presence of vapor-genetic chalcopyrite – pyrite bonds; the magnetite content characterizing the vapor-genetic bond of secondary sulfides and magnetite; the ratio of copper to iron, which characterizes the composition of the oxidized differences, and the content of total copper. FIG. 2 shows that the arrangement of 13 observations on the plane of the first and third main components Ui and Uj according to the mentioned signs preserves the clarity of the division of types according to the samples studied, shown in FIG. 1. The dividing lines of the found fields are -III according to the initial features of Cu / Fe; Si; S; Mt are determined by the regression equations, by which the specified ratios between the parameters are justified. So, moving counterclockwise around the intersection center of the dividing lines from the line separating fields 1 and 111, we intersect the line between fields 111-II, determined by the additional relationship between the parameters Cu / Fe; Si; S; Mt, and we fall into the area of ores, which must be subjected to combined enrichment, since pure flotation enrichment does not allow achieving high technological indices. When the main ratio of copper to iron, defined by a regression line between fields 1 and II, is exceeded, we fall into the region of easily enriched type I ores. The method is implemented using a device whose block diagram is shown in FIG. 3. The control device 1 comprises a copper content sensor 2, an iron content sensor 3, a sulfur content sensor 4, a magnetite content sensor 5, a measuring unit 6, a computing unit 7, an actuator 8, an ore flotation section 9, a combined hydrometallurgical flotation section 10 , a warehouse of 11 poorly ore enriched. The device works as follows. The content of copper, iron, sulfur and magnetite is measured, respectively, by sensors 2-5, connected to measuring unit 6. Computing unit 7 produces the formation of signs, including the ratio of copper to iron, calculating the coordinates of the main components, recognizes the membership of the incoming person. At this time, the raw material to one of the types deposited in the coordinates of the two main components, and generates a control signal to the actuator 8, affecting the flow of ore, changing the structure of the technological process, including, for example, a section of the combined flotation and hydrometallurgical process corresponding to the highest processing efficiency of the data. go raw materials. Downtime is eliminated by

installation of special storage tanks.

The use of the device allows to increase the selectivity of ores, the productivity of the process, the extraction of useful and associated components.

Claims (3)

1. Bazoev Kh. A., Kostritsyn V. N., Perepechin V. N. and others. Improving the efficiency of the integrated use of the main types of continuous sulfide copper-nickel ores by separate extraction and enrichment. “Ore Beneficiation, 1980, No. 2, p. 3-6. 2.Barsky L.N., Kozin V. 3. System analysis in the enrichment of minerals. M., "Nedra, 1978, p. 364-366. X / -W -iO (ff 29 CulO, 93, u / t / “w; CuS (0.6) Ci o (Of65) 2.0 J / W r 1.0 to Cuo {ff, 69, cSfffJi