JSC “Soyuztsvetmetavtomatika”, Moscow, Russia:

V. P. Topchaev, Chief Executive Officer
G. V. Fedin, Head of Laboratory, e-mail: geofedin@yandex.ru
V. Pak, Leading Engineer

Information about modern techniques of flotation flow control, dosing device of flotation reagents on the basis of momentum energy-efficient batch pins and a new way of monitoring dosing activities is presented in the article. Dosing system is represented as a set of stand-alone dosing modules, allowing for projects of similar dosing systems of flotation reagents at concentrating plants for a wide range of performance. Complex pulp tester PP2 provides information about the density of the aerated and de-aerated slurry volume concentration of air in the pulp and the mass concentration of solids in the slurry, and the level of the pulp from the discharge threshold and on a conditional entry level of the pulp chamber of the flotation machine is of particular interest, since one such device provides a replacement for multiple devices. The article presents the formulas by which the computation of each of the six parameters being displayed on the front panel. Transfer of the aerated pulp in the deaerated state is carried out automatically by the control valve pacifier. Indications of pulp level measured by buoyancy level transmitter in the flotation machine chamber are adjusted by measuring the density of the aerated pulp. Objective control of the metering equipment using the measurement results of the current and the set flow rate of the reagent is proposed. The presence of a digital communication channel of microprocessor devices with the High Level Control System allows implementing closed-loop servo system using the information on the measured parameters.

1. Lotter N. O., Kowal D. L., Tuzun M. A., Whittaker P. J., Kormos L. Sampling and flotation testing of Sudbury Basin drill core for process mineralogy modeling. Minerals Engineering. 2003. Vol. 16, iss. 9. pp. 857–864.
2. Trop A. E., Kozin V. Z., Prokofev E. V. Avtomaticheskoe upravlenie tekhnologicheskimi protsessami obogatitelnykh fabrik (Automatic control of technological processes of concentration plants). Second edition, revised and enlarged. Moscow : Nedra, 1986. 303 p.
3. Morozov V. V., Topchaev V. P., Ulitenko K. Ya., Ganbaatar Z., Delgerbat L. Razrabotka i primenenie avtomatizirovannykh sistem upravleniya protsessami obogashcheniya poleznykh iskopaemykh (Development and application of industrial systems of control of mineral concentration processes). Moscow : “Ore and Metals” Publishing House, 2013. 512 p.
4. Bhondayi C., Moys M. H. Determination of sampling pipe (riser) diameter for a flotation bubble load measuring device. Minerals Engineering. 2011. Vol. 24, Iss. 15. pp. 1664–1676.

5. Núñez F., Cipriano A. Visual information model based predictor for froth speed control in flotation process. Minerals Engineering. 2009. Vol. 22, Iss. 4. pp. 366–371.
6. Fedin G. V., Topchaev V. P. Ustroystvo dlya kontrolya tolshchiny sloya peny i urovnya pulpy v kamerakh flotomashin (Apparatus for the control of durability of foam layer and pulp level in flotation machine chambers). Patent RF, 2196640, IPC7 B 03 B 13/00. Published : January 20, 2003.
7. Stolyarov V. F., Konovalov N. M., Morozov V. V., Avdokhin V. M. Operativnyy kontrol i regulirovanie protsessa flotatsii polimetallicheskikh rud s ispolzovaniem fizicheskikh i elektrokhimicheskikh metodov analiza (On-line control and regulation of polymetallic ore flotation process using physical and electrochemical methods of analysis). Gornyi Zhurnal = Mining Journal. 2002. No. 11/12. pp. 58–62.
8. Khan G. A. Oprobovanie, kontrol i avtomatizatsiya protsessov obogashcheniya (Sampling, control and automation of concentration processes). Moscow : Nedra, 1974. 253 p.
9. Topchaev V. P., Fedin G. V., Pak V. Ustroystvo dlya izmereniya plotnosti, stepeni aerirovannosti pulpy i massovoy kontsentratsii tverdogo v pulpe (izmeritel PAT) (Apparatus for measurement of durability, aeration degree of pulp and solid weight percentage in pulp (measuring instrument of PAT)). Patent RF, No. 2518153, IPC G 01 N 9/00. Published : June 10, 2014.
10. Fedin G. V., Topchaev V. P. Ustroystvo dlya stabilizatsii davleniya zhidkosti na vkhode dozatora (Apparatus for stabilization of liquid pressure on batcher entrance). Patent RF, No. 81349. Published : March 10, 2009.
11. Fedin G. V., Topchaev V. P. Ustroystvo dlya dozirovaniya flotatsionnykh reagentov (Apparatus for flotation reagent batching). Patent RF, No. 2270980. Published : February 27, 2006.
12. Fedin G. V., Topchaev V. P. Ustroystvo dlya dozirovaniya flotatsionnykh reagentov (Apparatus for flotation reagent batching). Patent RF, No. 2473050. Published : January 20, 2013.
13. Topchaev V. P., Fedin G. V. Ustroystvo dlya izmereniya vesovogo raskhoda i vesovogo dozirovaniya zhidkikh flotatsionnykh reagentov (vesovoy raskhodomer/dozator zhidkosti) (Apparatus for measurement of mass-flow rate and weight batching of liquid flotation reagents). Patent RF, No. 2537099. Published : December 27, 2014.