SU1488018A1 - Device for determining flotation reagents consumption - Google Patents

Abstract

This invention relates to mineral processing. The purpose of the invention is to improve the accuracy of determining the optimal reagent consumption by stabilizing the process parameters. At the bottom of the chambers / K / 1.2, made of a dielectric material, aeration devices in the form of porous partitions 3.4 of elastic, dielectric, self-cleaning material are installed. In K 1.2, indicator electrodes 5,6 are placed, connected with the indicating device 7. Microcontainer 9, block / B / 10 of washing K 12 with water and B 11 of sending pulp samples to K 1 are connected with the command device, 2 In the bottom part K 1,2 there are shut-off valves 12, 13. The volumes K 1,2 are connected by electrolytic salt bridge 14. The signal from KA 8 closes the bottom valves 12, 13 and through B 11 send a sample of the pulp to K 1,2. The compressed air passing through the porous walls 3.4 is dispersed and aerates the pulp. With equal rates of change of potentials of the indicator electrodes 5.6 KA 8 includes a microdosing device 9, which supplies the reagent to K 2 according to the program of potentiometric titration. After the titration, KA 8 opens the bottom 13, 12 and gives a signal B 10 for flushing K 1,2. 1 il.

Description

The invention relates to the field of flotation mineral processing, in particular to automatic regulation of the reagent flotation mode of polymetallic ores.

The purpose of the invention is to increase the accuracy of determining the optimal consumption of reagent by stabilizing the process parameters.

The drawing shows a device section. ¹

The device consists of two chambers 1 and 2, in the bottom of which aeration devices are installed, made in the form of porous partitions 3 and 4 of elastic self-cleaning dielectric material. The chambers 1 and 2 are also made of dielectric material, they have indicator potentiometric electrodes 5 and 6 connected to the indicating device 7. The device has a command device 8 and associated micro * dispenser 9, a washing unit 10 for flushing the chamber 1 and 2 with water and block 11 for sending pulp samples to chambers 1 and 2. At the bottom of each of chambers 1 and 2 there are shut-off valves 12 and 13. The volumes of chambers 1 and 2 are interconnected by an electrolytic salt bridge 14.

The device operates as follows.

The command apparatus 8 gives a signal to close the bottom valves 13 and 12 of chambers 1 and 2 and a signal to block 11 to send a pulp sample to these chambers. After a period of time; neither the chambers 1 and 2 are filled with compressed air (p = 0; 2 at) under the porous septa 3 and 4. The pulp in chambers 1 and 2 is mixed until the equality of the rate of change of the redox potential / Lp (ORP) of the pulp from both chambers 1 and 2, measured by two identical indicator electrodes 5 and 6. The difference signal from the electrodes 5 and 6 is fed to the indicating device 7. When the stabilization of the difference signal is achieved, the command apparatus 8 issues a command to the microdoser 9, which supplies the reagent to camera 2 according to the program otentsiometricheskogo titration. At the end of titration, the command apparatus 8 gives a signal to open, open the bottom valves 12 and 13, and to block 10 to flush the chambers with water. As the optimal reagent flow rate is determined, the operator controls the process of supplying the reagent to the flotation. By adjusting the air supply, the titration process is accelerated or slowed down. The optimum 'titration time is selected depending on the absorption capacity of the pulp.

Providing the device with an electrolytic salt bridge when chambers 1 and 2 and the aerating device are made of dielectric material, due to the exclusion of electrical noise, it is possible to more stably measure the potential difference of the indicator electrodes 5 and 6 and, therefore, more accurately conducts the process of determining the optimal consumption of flotation reagent. The implementation of the aeration device 5 in the form of porous partitions installed in the lower part allows one to stably maintain almost any degree of pulp aeration and process samples containing a large amount of coarse fractions. The implementation of partitions of elastic self-cleaning material provides stable aeration of the pulp in a given mode.

Improving the accuracy of determining the optimal consumption of reagents allows, ultimately, to increase the extraction of valuable components from ores while reducing the consumption of flotation reagents.

Claims (1)

Claim A device for determining the optimal flow rate of flotation reagents, including two chambers with aeration devices, indicator electrodes installed in the chambers, a measuring device connected to the indicator electrodes, a microdoser, blocks for sending pulp samples to the chambers and chamber washing, a command apparatus connected to the microdoser and blocks the fact that, in order to increase the accuracy of determining the optimal reagent consumption by stabilizing the process parameters, the device is equipped with electrolytic salines a bridge linking the volume of the chamber, wherein the chambers are made of a dielectric material, and the aeration device formed as mounted in the bottom of chambers porous walls of self-cleaning of an elastic dielectric material.