Intermediate Products of Selective Sampling High Calcium Volatile Ash Species and Obtaining Special Cements and Magnetic Microspheres on Their Base | Sciact - CRIS-system of Boreskov Institute of Catalysis

Intermediate Products of Selective Sampling High Calcium Volatile Ash Species and Obtaining Special Cements and Magnetic Microspheres on Their Base Full article

Journal

Chemistry for Sustainable Development
ISSN: 1817-1818

Output data

Year: 2010, Volume: 18, Number: 3, Pages: 329-340 Pages count : 12

Tags

volatile ash species, structure, the dispersity level, cementing properties, magnetic microspheres

Authors

Sharonova O.M. ¹ , Anshits A.G. ^1,2 , Solovyev L.A. ¹ , Salanov A.N. ³

Affiliations

1	Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences
2	Siberian Federal University
3	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences

High-calcium volatile ash of brown coal from the Berezovsky open-pit mine of the Kansk-Achinsk basin selectively sampled from different points in the ash-collecting installation at BSRES-1 (convective pit, prechamber, and each of the four fields of electrofilters) was studied. Differences between these middlings in chemical composition, dispersity, binding properties were established. The types of volatile ash samples were determined in the system of their chemical classification. It was shown that the ash samples of Beresovsky, Nazarovo coal from the 1st - 4th fields of electrofilters differ from all the known kinds of ash by the maximally high calcium content. It follows form the phase diagram of the system СаО-Al2O3-SiO2 that hydraulically active phases similar to the basic phases of the Portland cement clinker may be formed from the ash of electrofilters. Due to differences in the composition of ash samples, the ratio of these phases will be changed, too. Along with differences in particle size, this allows one to obtain Portland cement with special properties on this basis. Six fractions of magnetic microspheres of high purity were obtained; their chemical, quantitative phase composition and morphology were studied, including the contribution from globules of different kinds and the structural texture features of the material; methods of application were determined; the trends of changes in composition and morphology with changes in fraction size were established.

Sharonova O.M. , Anshits A.G. , Solovyev L.A. , Salanov A.N.
Intermediate Products of Selective Sampling High Calcium Volatile Ash Species and Obtaining Special Cements and Magnetic Microspheres on Their Base
Chemistry for Sustainable Development. 2010. V.18. N3. P.329-340. РИНЦ

Шаронова О.М. , Аншиц А.Г. , Соловьев Л.А. , Саланов А.Н.
Промпродукты селективного отбора высококальциевых летучих зол и получение на их основе специальных цементов и магнитных микросфер
Химия в интересах устойчивого развития. 2010. Т.18. №3. С.405-416. РИНЦ

Elibrary

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