SU759133A1 - Control method for gravitational process of sulfide gold-containing ore concentration - Google Patents

Description

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The invention relates to the field of mineral processing, primarily to the enrichment of gold containing β-sulphide ores, non-ferrous metals, and can be used in the extraction of gold by gravitational methods from copper, copper-zinc and other ores of non-ferrous metals, as well as for the extraction by gravity of tin-containing and other minerals.

A method for controlling the enrichment process is known, in which the adjustment of the technological mode and, consequently, obtaining the optimum technological parameters are due to interrelated changes in dry weight performance, water consumption, measuring various physical or physicochemical characteristics, etc., for example optimal maintenance of the initial power, the amount of which varies depending on the content of the electrically conductive fraction 1 in the initial power.

A known method of controlling the gravitational process of enrichment of gold-containing sulfide ores in hydrocyclones and concentration

tables based on the regulation of water flow 2.

However, the known methods of controlling gravity processes are not

5 can be used in the process of gravitational separation of zodoto-containing sulphides from sulphide ores due to the lack of express and sufficiently accurate methods.

to analysis. For example, the density of the initial parameters of the pulp is not corrected with the content of gold in it.

The process of gravitational separation of gold-containing sulphides from sulphide ores includes the classification of sulphide pulp in hydrocyclones, for example, short-cone, and the enrichment of hydrocyclone sands on concentration tables or similar

20. The most important parameter of the process is the gold content in the final gold-bearing concentrate, which should not be below the limit that determines the profitability of further processing of the concentrate.

The parameters of the pulp classification (input and output streams, the content in them of a valuable coefficient) in

30; hydrocyclone and concentration.

The table varies within 1-minute range and can be determined by the results of private testing of the process, which is unacceptable for the operational management of the process. Information about the value of the initial pulp flow or the value of the solid flow in the original pulp used in the original solutions does not allow for the prompt and accurate control of the process of the Gravitational extraction of gold-containing products from sulphide ores.

The aim of the invention is to improve the accuracy of control.

This goal is achieved by those that additionally measure the consumption of gold-containing concentrate at the outlet of the concentration table and the flow of water into the hydrocyclone and the concentration table is adjusted taking into account the correction according to the found value and also the fact that the water consumption on the concentration table is adjusted when the gold-containing concentrate deviates from the specified value 10%, and with a deviation of more than 10% adjust the flow of water in the hydrocyclone.

The drawing shows a block diagram of a method for controlling the process of gravitational extraction of anaolot.

The gold-containing pulp goes along with the water into the sump 1, from where the pulp is pumped into the crust-cone hydrocyclone 3 by the pump 2. Sands of the hydrocyclone 3 together with the water serve the concentration table 4, where they receive the gold-containing concentrate and tails. The flow of gold concentrate is measured by sensor 5 ,. the output of which coBiMecTHO with the output of the block of task 6 is fed to the inputs of the comparator unit 7. The outputs of the comparator unit 7 are supplied directly and through the regulating device 8 to the input of the unit for forming the correlation of 9 water flows to the hydrocyclone and

concentration table. In the forming unit, the ratios 9 and the regulating device 8 generate a control signal for the actuators 10 and 11, respectively, kinematically connected with the valve 12 regulating the water supply to the concentration table, and the valve 13 regulating the water supply to the hydrocyclone.

The use of the proposed method allows to increase the extraction of gold by 2-3% due to maintaining the optimum amount of gold in the concentrate at a certain amount of gold.

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Claims (2)

Invention Formula A method for controlling the gravitational process of enriching gold-containing sulfide ores in hydrocyclones and concentration tables, based on controlling the flow of water, characterized in that, in order to improve control accuracy, the flow rate of gold-containing concentrate at the concentration table output and the flow rate of the hydrocyclone and concentration concentration are additionally measured table handle with 0 taking into account the correction for the value found. 2. The method according to claim 2, characterized in that the water flow to the concentration table is adjusted when the flow rate of gold-containing concentrate deviates from the specified value less than 10%, and if it deviates more than 10%, the flow rate of water to the hydrocyclone is adjusted. Sources of information taken into account in the examination / 1. USSR Author's Certificate No. 395116, cl. B 03 B 13/00, 1971. 2. USSR author's certificate 148005, c. В 03 В 13 / 00,1973.