Mekhanobr Engineering JSC (St. Petersburg, Russia):

Vasilyev A. M., Researcher, Candidate of Engineering Sciences, science@mekhanobr.spb.ru

Saint Petersburg Mining University (St. Petersburg, Russia):
Kuskov V. B., Associate Professor, Candidate of Engineering Sciences

The results of the studies on the main factors’ effects (deck vibrational frequency and swing amplitude, its angle of inclination, size of recovered higher-density component) upon concentrating table 51KTs operating efficiency are presented. The estimation of beneficiation efficiency was performed by Hancock-Luyken test. The feed material was artificial mix, consisting of quartz sand and granulated ferrosilicium narrow size fractions. The methods of studies by means of a concentrating table and ferrosilicium separation from concentrated products by means of a magnetic separator were preliminarily elaborated. The studies in question were based on second-orderrotatable-design method. This method is especially expedient for the studies of conditions close to optimal, ill-described by linear relationship. On the basis of the acquired experimental data, the regularities of the main factors’ effects upon particles separation on concentrating table were revealed, providing for a more deliberate regulation of fine-grained ores and materials separation processes both under laboratory conditions and in full-scale production. The recommendations for concentrating table operation with various fine-grained materials were formulated.

1. Abramov A. A. Processing, beneficiation and complex use of minerals. Vol. 1. Moscow: Publ. MGGU, 2004. 472 p.
2. Avdokhin V. M. Fundamentals of mineral processing: a textbook for universities. 2nd ed., stereotyped. Vol. 1.
Beneficiation processes. Moscow: Publ. MGGU, Gornaya kniga, 2008. 417 p.
3. Glembotskaya T. V. Emergence and development of gravitational methods for minerals dressing. Moscow: Nauka, 1991. 256 p.
4. Verkhoturov M. V. Gravitational beneficiation methods: a textbook for universities. Moscow: MAKS Press, 2006. 352 p.
5. Bert R. O. Technology of gravity concentration. Moscow: Nedra, 1990. 575 p.
6. Isaev I. N. Concentration tables. Moscow: Gosudarstvennoye nauchno-tekhnicheskoye izdatelstvo literatury po gornomu delu, 1962. 100 p.
7. Kizevalter B. V. Theoretical basis of gravity beneficiation processes. Moscow: Nedra, 1979. 295 p.
8. Isaev I. N. Investigation of the process of mineral grains separation by specific gravity at concentration tables: Author’s abstract of dissertation for the degree of Candidate of Engineering Sciences. Leningrad, 1959. 21 p.
9. Terekhov V. I., Zimens L. G., Maltsev V. V. New synthetic coatings of concentration tables decks. Tsvetnaya Metallurgiya. 1988. No. 9.
10. Handbook on the ores beneficiation. Basic processes. Moscow: Nedra, 1983. 382 p.
11. Gurema V. V., Kuleshov G. G. The choice of a rational technology for the gravitational separation of precious metals from polymetallic ores. Tsvetnaya Metallurgiya. 1991. No. 1. pp. 26–28.
12. Barskiy M. D. Optimization of the processes of granular materials separation. Moscow: Nedra, 1978. 168 p.
13. Fitzpatrick R. S., Ghorbani Y., Hegarty P., Rollinson G. Quatitative mineralogy for improved modeling of shaking tables. XXVIII IMPC. Quebec City, Canada, 2016. Paper No. 1159. pp. 1–19.
14. Philander C., Rozendaal A. A process mineralogy approach to geometallurgical model refinement for the Namakwa Sands heavy minerals operations, west coast of South Africa. Minerals Engineering. 2014. Vol. 65. pp. 9–16. DOI: 10.1016/j.mineng.2014.04.006.
15. Grobler J. D., Bosman J. B. Gravity separator performance evaluation using Qemscan^® particle mineral analysis. The Journal of The Southern African Institute of Mining and Metallurgy. 2011. Vol. 111. pp. 401–408.
16. Bergmann C., Govender V., Corfield A. A. Using mineralogical characterisation and process modelling to simulate the gravity recovery of ferrochrome fines. Minerals Engineering, Physical Separation, 2016. Vol. 91. pp. 2–15. DOI: 10.1016/j.mineng.2016.03.020.
17. Wills B. A., Finch J. Wills’ mineral processing technology: An introduction to the practical aspects of ore treatment and mineral recovery. 8^th ed. Butterworth—Heinemann, 2015. 512 p.
18. Nalimov V. V., Chernova N. A. Statistical methods for planning extreme experiments. Moscow: Nauka, 1965. 340 p.