Improvement of a Preparation Process of Chromite Raw Material Used for Ferroalloys and Pigments Manufacture
The given article contains the research results of carbon-containing chromite pellets’ production from off-grade raw material with application of internal coal-mining overburden rocks as flux. Besides, for the purpose of improvement of ecological situation in industrial regions and expansion of a raw-material base for ferrochrome and pigments manufacture we suppose to use in a charge composition the dust of aspiration units and electrostatic precipitators, which is formed at the preparation of raw materials and production of chromite pellets. The production technology of chromite pellets with use of a slime formed at the concentration of chrome ores as a binding substance was developed. Testing the suggested technology has been carried out in laboratory and trial conditions. The data of a chemical composition of initial components of a charge and calcined carbon-containing chromite pellets have shown economic and ecological efficiency of the developed technological process. Research results lead to the conclusion that the proposed granulation feedstock mixture pellets with a moisture content of 11–12% are obtained crude granules have
a compressive strength of 2.3–3.2 kg/splashed. Increasing the content of Cr2O3 in the pellets to 7.6% occurs due to the increase in the extraction of chromium oxide and due to the charge of chromium oxides contained in the sludge, as well as removal of the batch formulation was heat treated carbonates, and volatile organic substances. It was established that during this mode, the temperature in the lower layers is about 1200 °C, and a reduction in natural gas consumption achieves 50% and the residual carbon content in the pellets is about 1.5%, which leads to improvement of technical and economic indices of production chromite pellets and ferrochrome.
. Xiao Xue, Jie Qin, Jianrong Song, Jian Qu, Yunxing Shi, Weidong Zhang, Zhongnan Song, Lihong Jiang, Jingfang Li, Haishan Guo, Tao Zhang, Sol. Energy Mater. Sol. Cells 130 (2014) 587–598.
. H.Y. Zhang, J.H. Wang, L.L. Wang, J.T. Du, Adv. Mater. Res. 750–752 (2013) 1746–1749.
. E. Gražėnaitė, J. Kiuberis, A. Beganskienė, J. Senvaitienė and A. Kareiva, Chemija, 25 (2014) 199–205.
. K. Castro, U. Knuutinen, S.F.-O.D. Vallejuelo, M. Irazola, J.M. Madariaga, Spectrochim. Acta, Part A. 106 (2013) 104–109.
. E.N. Kocherov, K.T. Zhantasov, M.K. Zhantasov, M.A. Zhilkibayev. Use of carboniferous solid materials when receiving chromite pellets // Theses of reports "XVIII Mendeleevsky congress in the general and applied chemistry" – M, 2007. – p. 458–459 (in Russian).
. M.M. Ryan Jr., Regulatory and performance advances in Complex Inorganic Colored Pigments, 2011: Society of Plastics Engineers Color and Appearance Division, CAD RETEC 2011.
. K.J. Sreeram, J.R. Rao, B.U. Nair, Journal of the American Leather Chemists Association. 106(7) (2011) 219–225.
. T.T. Berdysheva, Enrichment and sintering of chromite ores abroad. BNTI//Ferrous metallurgy [Chernaja metallurgija]. 23 (1977) 3–18 (in Russian).
. V.V. Sinitsyn, I.A. Yalovets, A.G. Zhunev, E.P. Tarasova. Author's certificate #4300574 of USSR. Way of a granulation of chromic furnace mixtures; Published on 30.12.89, Bulletin #48.
. V.I. Babanin, I.Yu. Ryvkin etc. Sintering by method of briquetting of fine-grained and finegrained industrial wastes // Tekhnogen-98. Second exhibition and scientific and technical conference on processing of technogenic educations. Еkaterinburg, 1998 (in Russian).
. V.V. Til, V.N. Shashkin, etc. Development and realization of technology of briquetting of a chromite concentrate at the Don mining and processing works// Industry of Kazakhstan [Promyshlennost' Kazahstana] 2(11) (2002) 84–89 (in Russian).
. Saranchuk V.I. Bases of processing of combustible minerals / Saranchuk V.I., Zbykovsky E. I., Vlasov G.A. – Donetsk: 2003. – 272 p. (in Russian).
. P.Ya. Nefedov, Briquetting the mixture of materials for production of high-carbonaceous ferrochrome / P.Ya. Nefedov, V.A. Matviyenko, Yu.B. Tyutyunnikov // Sb. "Problems of the theory and technology of preparation of iron ore raw materials for non-coke production". – Dnepropetrovsk, 1990. - p. 228–230 (in Russian).
. Yu.B. Tyutyunnikov, Research of process of receiving binding material and properties of coke briquettes on its basis / Yu. B. Tyutyunnikov, V. N. Orekhov//Energy saving. Energetika. Energy audit. 2008. – #7(53), – p. 31–39
. N.V. Pavlov, I.I. Chuprynina, Regularities of formation of chromite fields. - M.: Science, 1973, 199 p. (in Russian).
. N.M. Savchenkova, Enrichment of chromite ores abroad. Chermetinformation. M, 1972 - p. 28–29.
. Carbon reducktion of chromites in Bird River and other ores and concentrates at 1200–1700 °C (Healy Gejrge W. I) Can. Met. Quart. – 1988. – 27. #4. – p. 281–285. English. Place of storage of State Public Scientific Technical Library of the USSR.
. Information institute “Chermetinformacia”, 5th series, 4th issue, 1972. 13 p.
. J.L. Clay, J.F. Pearse, D.H. Trethewey, J. Soc. Chem. Ind., 69, #9, 275 (1950).
. Author's certificate of USSR #1677074. Way of production of pellets. Bus A.A. Bales, N.S. Ivanov, Yu.I. Gladkikh, etc. Published on 15.09.91 Bulletin #34.
. Author's certificate of USSR #1708889. Way of burned chromite pellets production. Yu.S. Yusfin, Yu.B. Veytkovsky, B.F. Tikhomirov, etc.
. Author's certificate of USSR #1836457. Way of an sintering of chromite ores. Bus M. Mayzel, R.F. Kuznetsov, Yu.S. Yusfin, etc. Published on 23.08.93 Bulletin #31.
. Preliminary patent of Republic of Kazakhstan #15839. Way of processing of chromite ores. Bus Zhantasov K.T., Alteev T., Bayzhanov B.B., Zhilkibayev M.A. Bulletin #6, 15.06.2005.
. Preliminary patent of the Republic of Kazakhstan #18468. Way of receiving chromite pellets. Bus Zhantasov K.T., Kocherov E.N. etc. Bul.#5, 15.05.2007.
. K.T. Zhantasov, E.N. Kocherov, etc. The report on research work on the contract #412 of November "21", 2011 with JSC National Innovative Fund, according to the budgetary program 026 "Granting innovative grants within the Productivity direction – 2020", on behalf of the grantor – the Ministries of the industry and new technologies of the Republic of Kazakhstan (in Russian).
Copyright (c) 2015 Eurasian Chemico-Technological Journal
This work is licensed under a Creative Commons Attribution 4.0 International License.
You are free to: Share — copy and redistribute the material in any medium or format. Adapt — remix, transform, and build upon the material for any purpose, even commercially.