JSOC Bashneft (Russia):

Gizzatov А. А., Process Engineer, arnoldnash@rambler.ru

Ufa State Petroleum Technological University (Russia):

Rakhimov M. N., Professor, Doctor of Engineering Sciences

Rakhimova Z. F., Associate Professor, Ph. D. in Chemical Sciences

E-mail (coomon): rmni@mail.ru

Development of coal mining and processing technologies provides for coal layers mining with application of various machines and mechanisms, resulting in run-of-mine coal contamination with fine ash size fractions, efficient beneficiation of which is possible only with use of froth flotation. The article is dedicated to the problem of coal fine fractions — fractions below 0.5 mm (coal fines) — beneficiation of Karaganda basin high-ash-coal. The literature analysis shows, that aliphatic and aromatic hydrocarbons of various hydrocarbon makeup are prevalent among effective flotation collector-reagents. Therefore, the following petrochemical products: ethylbenzene and diethylbenzene fractions, ethylbenzene distillation residue, as well as diesel fuel — for comparison, are chosen as flotation reagents. Influence of reagents' nature upon yield and recovery of flotation concentrate's useful mass was studied, as well as characteristic curves of dressed coal grade, after treatment with the studied reagents, plotted against their concentration, are presented. The highest efficiency was shown by ethylbenzene distillation residue. The results analysis revealed, that its application as a flotation reagent provides concentrate yield increase and decreases concentrate's ash content. This will permit to decrease product cost to competitive level and increase production profitability.

1. Gladkiy Yu. N., Dobroskok V. A., Semenov S. P. Ekonomicheskaya geografiya Rossii. Uchebnik (Economic geography of Russia. Textbook). Moscow, KafedraM, 1999, 752 p.
2. Syskova K. I., Korolev Yu. G. Koksokhimicheskoye proizvodstvo (Coke and byproduct process). Moscow, Vysshaya shkola, 1969.
3. Http://www.ideasandmoney.ru/Ppt/Details/297677.
4. Pat. 2176557 Russian Federation.
5. Golitsyn M. V., Golitsyn A. M. Koksuyushchiyesya ugli Rossii i mira. Spravochnik (Russian and world coking coals. Handbook). Under the editorship of V. F. Cherepovskiy. Moscow, Nedra, 1996, 239 p.
6. Gizzatov A. A., Chekmarev I. A. Ratsionalnoye i effektivnoye ispolzovaniye produktov neftekhimii i neftepererabotki pri flotatsii ugley (Rational and efficient use of petrochemical and refined products in the process of coal flotation). Osvoyeniye mineralnykh resursov Severa: problemy i resheniya. Trudy 10 Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii (North mineral resources development: issues and options. Proc. of 10^th Intern. sci. and techn. conf.). Vorkuta, April 11–13, 2012. Vorkuta, Vorkuta Mining Institute, 2012, pp. 11–13.
7. Pat. 2112601 Russian Federation.
8. Pat. 2019302 Russian Federation.
9. Glembotskiy V. A. Osnovy fiziko-khimicheskikh flotatsionnykh protsessov (Basis of physicochemical flotation processes). Moscow, Nedra, 1980.
10. Miklyuchev Yu. A., Gizzatov A. A., Rakhimov M. N., Baulin O. A. Neftegazovoye delo — Oil and Gas Business, 2011, Vol. 9, No. 2, pp. 66–69.
11. Pat. 2306982 Russian Federation.
12. ISО 88582: 2004. Ugol' kamennyy. Ispytaniye na pennuyu flotatsiyu (Сoal. Test for foam floatation). Pt. 2. Posledovatelnaya otsenka (Sequential estimation).
13. GOST 2093—82. Toplivo tverdoye. Sitovyy metod opredeleniya granulometricheskogo sostava (Solid fuel. Sieve method for granulometric composition analysis). Moscow, Standards Publishing House, 2001.
14. Sirchenko A. S. Razrabotka reagentnykh rezhimov flotatsii kamennougolnoy melochi na osnove ispolzovaniya vodor astvorimykh sopolimerov. Dissertatsiya … kandidata tekhnicheskikh nauk (Development of culm flotation reagent regime on the basis of watersoluble copolymers use. Ph. D. thesis in Engineering Sciences). Moscow, Institute of Comprehensive Exploitation of Mineral Resources, RAS, 2008, 153 p.