Processing of mineral part of refined ferrochrome slags to obtain pelleted porous heat insulator

Authors

  • I.V. Bondarenko “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University
  • Y.A. Tastanov “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University
  • N.M. Sadykov “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University
  • M.S. Ismagulova “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

DOI:

https://doi.org/10.31643/2018/6445.42

Keywords:

slag, ferrochrome, chrome, glass phase, diatomite, ferritic-calcium flux-bonding, pellets.

Abstract

In the wastes of the joint stock Aktobe Ferro-alloy plant, there are over 12 mln ton of refined ferrochrome slags that contain significant amounts of the metal dorebead. Dust-like mineral part of the slagof refined ferrochrome mainly consists of di-calcium silicate contaminated with poisonous compounds of hexatomic chrome. The metal can be separated from the mineral part by air separation and screen sizing, while the mineral part of the slag can be very efficiently mixed with Kazakhstani ferri-ferrous diatomite(opoka) and fluid glass and thermally  processed to obtainglass-like heat insulating material. Being heated up to t ≥ 1000оС Di-calcium silicate interacts with finely divided ferrumdioxyde and hydrated silica  to formporous glass phase of ferro-silica-calcium compounds that strengthen the heat-processed pellets against any mechanical influence. It was found that the optimum conditions for pellet production are: the ratio of diatomite ore to the mineral part of the RFX slag 2: 1, because at other ratios, the formation of a rolling glass-phase pellet is observed, the processing temperature is 1050 ° C, because at lower temperatures there is practically no formation of a glass phase. The compounds of hexatomic chrome het destroyed at heating and dissolve in the glass mass where they become insoluble. It is shown that the mineral part of RFX slags due to the relatively high content of calcium and silicon oxides is a valuable raw material for the production of granular porous heat-insulating material. The proposed technology makes it possible to extract a high-value metal component of RFX slags in the form of an expensive metal concentrate of refined ferrochromium and to obtain porous pellet fillers for reinforced concrete products.

Downloads

Download data is not yet available.

Author Biographies

I.V. Bondarenko, “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

Candidate of Technical Sciences, Leading Researcher, Institute of Metallurgy and Extraction, The Kazakh national research technical University after K.I.Satpaev, Almaty,Kazakhstan.  

Y.A. Tastanov, “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

Doctor of Technical Sciences, Chiev Researcher, Institute of Metallurgy and Extraction,  The Kazakh national research technical University after K.I.Satpaevю, Almaty, Kazakhstan.

N.M. Sadykov, “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

Junior Researcher, Institute of Metallurgy and Extraction,  The Kazakh national research technical University after K.I.Satpaev, Almaty, Kazakhstan.

M.S. Ismagulova, “Institute of Metallurgy and Ore Beneficiation” JSC; Satbayev University

Candidate of Technical Sciences, Associate Professor of the Department of Physics, Institute of Metallurgy and Extraction,  The Kazakh national research technical University after K.I.Satpaev, Almaty, Kazakhstan.

References

Ryss M.A. Proizvodstvo ferrosplavov.(Production of ferroalloys) M.: Metallurgiya. 1985. 380. (in Russ.).

Respublikanskaya assotsiatsiya gornodobyvayushchikh i gorno-metallurgicheskikh predpriyatiy. ERG budet pererabatyvat lezhalyy shlak Aktyubinskogo zavoda ferrosplavov. (Republican Association of Mining and Mining and Metallurgical Enterprises. ERG will process the slag of Aktyubinsk Ferroalloys Plant) gazeta Kursiv kz.=Newspaper Kursiv kz. 13.11.2014. (in Russ.).

Imankulov Zh.I.. Goncharova T.G.. Yakovleva N.A.. Limeshkina E.S.. Almurzayeva S.I. Rezultaty issledovaniy soderzhaniya khroma v atmosfernom vozdukhe. vode. pochve. rasteniyakh Aktyubinskoy oblasti (The results of studies of chromium content in atmospheric air, water, soil, plants of the Aktobe region)// Materialy VI Mezhdunarodnaya nauchno-prakticheskaya konferentsiya «Tyazhelyye metallu i radionukleidy v okruzhayushchey srede».(Materials VI International Scientific and Practical Conference "Heavy Metal and Radionuclides in the Environment) T. 1. g. Semey. 2010. (in Russ.).

Otchet o rezultatakh issledovaniya lezhalykh shlakov rafinirovannogo ferrokhroma. ( Report on the results of the investigation of the slag of slag refined ferrochromium) Energo project industrijaa. d.Beograd Belgrad.Serbiya. 2014. 83. (in Eng.).

Patent 2347622 RF Sposob pererabotki otvalnogo raspadayushchegosya shlaka. (Method for processing the waste disintegrating slag).Privalov O.E. Razin A.B., Petlyukh P.S., Esenzhulov A.B., Karmanov R.T., Demin B.L., Grabeklis A.A. Opubl. 27.02.2009. Byul. No 4. (in Russ.).

Kucher A.G.. Novikov N.V.. TadzhibayevN.T. Sovershenstvovaniye silikotermicheskogo protsessa vyplavki nizkouglerodistogo ferrokhroma. (Improvement of the silicothermic process of smelting low-carbon ferrochromium.) Stal=Steel. 1995. 4. 31-33. (in Russ.).

Smirnov L.A. Grabeklis A.A.. Demin B.L. Pererabotka shlakov ferrosplavnogo proizvodstva.(Processing of slag ferroalloy production.). Trudy OAO Uralskiy institut metallov. (Proceedings of the Ural Institute of Metals) 2005. «UralInfo» Informatsionnoye agenstvo www.urm.ru. (access date: 17.09.2017).

Timonin A.S. Inzhenerno-ekologicheskiy spravochnik.( Engineering and environmental reference book) Tom 1. M.: Metallurgiya. (Metallurgy). 1979. 194-196.

V Aktyubinskoy oblasti vozmozhno snizheniye sebestoimosti stroitelstva za schet stroitelstva tsementnogo zavoda (In Aktyubinsk region, it is possible to reduce the cost of construction through the construction of a cement plant) www.krn.kz (access date: 31.10.2017).

Kazennova E.P. Obshchaya tekhnologiya stekla i steklyannykh izdeliy. (General technology of glass and glassware).M.:Stroyizdat. 1989. 144. (in Russ.).

Manevich V.E., Subbotin R.K., Nikiforov E.A. Diatomit-kremnesoderzhashchiy material dlya stekolnoy promyshlennosti. (Diatomite-siliceous material for the glass industry). 2012.35-42. (in Russ.).

Shuqiang Xuab. Julin Wangab. Qinglin Mac Xin Zhaod Tao Zhange Study on the lightweight hydraulic mortars designed by the use of diatomite as partial replacement of natural hydraulic lime and masonry waste as aggregate. Construction and Building Materials. 2014. 73. 33-40. (in Eng). https://doi.org/10.1016/j.jclepro.2016.01.069

Flower R.J. (University College London. London. UK) Diatom methods | Diatomites: Their Formation. Distribution. and Uses. Encyclopedia of Quaternary Science (Second Edition). 2013. 501-506.in Eng).

Properties of sustainable cement mortars containing high volume of raw diatomite // Sustainable Materials and Technologies. 2018. 16. 47-53. (in Eng.).

Jianzong Man. WenyuanGao. Shuang Yan. Guishan Liu. Hongshun Hao. Preparation of porous brick from diatomite and sugar filter mud at lower temperature. Construction and Building Materials.2017. 156.1035–1042. https://doi.org/10.1016/j. conbuildmat.2017.09.021

Pustovgar A. Effektivnost primeneniya aktivirovannykh diatomitov v sukhikh stroitelnykh smesyakh.(The effectiveness of the use of activated diatomites in dry building mixtures). Stroitelnyye materialy=Construction Materials.2006. 52-57. (in Russ.).

Kuldeyev E.I. Bondarenko I.V. Orynbekov R.E.Primeneniye aktivirovannogo diatomita v sukhikh stroitelnykh smesyakh. (The use of activated diatomite in dry building mixtures). Vestnik KazNITU (Bulletin of KazNRU). 2018. 5. 404-407. (in Russ.).

Bondarenko I.V. Tastanov E.A. Sadykov N.M-K. Polucheniye innovatsionnogo teploizolyatsionnogo materiala iz shlakov ferrokhroma. (Obtaining an innovative thermal insulation material from ferrochrome slags). Ekologiya i promyshlennost Kazakhstana.=Ecology and Industry of Kazakhstan. 2018. 1.32-35. (in Russ.).

Karpenko R.A.. Gromov A.S. Khaydukov V.P. Ferritno-kaltsiyevyy flyusosvyazuyushchiy dlya zhelezorudnykh okatyshey. (Ferritic-calcium flux-bonding for iron ore pellets) LGTU . g. Lipetsk. Site: http://komane.ru. (access date: 06.09.2018).

Kovzalenko V.A.. Sarsenbay G.. Sadykov N.M.K.. Abdulvaliyev R.A. Kompleksnaya pererabotka kaolinitovykh glin s polucheniyem promyshlennykh produktov.(Complex processing of kaolinite clays to produce industrial products). Kompleksnoye ispolzovaniye mineralnogo Syria (Complex Use of Mineral Resources). 2018. 1.26 -34.

Abdrakhimova E.S.. Abdrakhimov V.Z. Vysokoporistyy teploizolyatsionnyy material na osnove zhidkogo stekla.( High-porosity heat-insulating material based on liquid glass) Fizika i khimiya stekla=Physics and Chemistry of Glass. 2017. 43, 2. 17-21. (inRuss.).

Downloads

Published

2018-10-15

How to Cite

Bondarenko, I., Tastanov, Y., Sadykov, N., & Ismagulova, M. (2018). Processing of mineral part of refined ferrochrome slags to obtain pelleted porous heat insulator. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources, 307(4), 158–165. https://doi.org/10.31643/2018/6445.42