Phase–mineral and chemical composition of composite samples from feed coals, bottom ashes and fly ashes at the Soma power station, Turkey

Morphology and Composition of Microspheres in Fly Ash from the Luohuang Power Plant, Chongqing, Southwestern China

“…As shown in Figure 1, the particle size of the Luohuang fly ash is between 0.5 and 400 µm, with D 50 (medium diameter) of 50.7 µm, D 10 of 6.10 µm and D 90 of 178.38 µm, similar to those previously reported by Mardon et al [38], Vassilev et al [39] and Dai et al [40].…”

Combustion and Leaching Behavior of Trace Elements in Lignite and Combustion by-Products From the Muğla Basin, Sw Turkey

“…There is an extensive literature concerning the determination of HAP behaviour during coal combustion (e.g. Finkelman, 1994;Vassilev et al, 2005). All these studies are based on the fact that an element is enriched in the produced fly and bottom ash due to the escape of the volatile matter during combustion.…”

Review of contemporary world studies on characteristics of fly ash as a secondary mineral resource: Part 1

“…Neki isparavaju (Br, Cl, F, Hg, I), ali većina ostaje u pepelu i to prisutna u različitim klasama krupnoće. Na osnovu opsežnih istraživanja Vassilev je došao do zaključka da se u letećim pepelima koncentrišu sledeći elementi [11,12]:…”

“…a -alumosilikatna staklasta sfera; b -glatka alumosilikatna cenosfera; c -mehurasta alumosilikatna cenosfera; d -alumosilikatna cenosfera sa kristalima kalcita i dolomita na površini; e -kristalna struktura mulit-kristobalit-kvarc u zidu alumosilikatne cenosfere; f -alumosilikatna staklasta plerosfera, g -dermasfera (larnit prekriven alumosilikatnim staklom); h -ferosfera sa dendritičnim kristalima magnetita u alumosilikatnom staklu; i -površina ferosfere (orjentisani lanci ferospinela u staklastoj fazi); j -unutrašnja struktura ferosfere; k -alumosilikatna staklasta sfera (desno) i porozni alumosilikatni sferoid (levo); l -staklasti aglomerat; m -plagioklasni sferoid; n -gips (1), kalcit (2), kalcit prekriven Ca-Mg-Na-K fazom (3), opal (4); o -različiti tipovi čestica organskog porekla [22,5,6,12] Sferoide (slika 3 k, m) se ne moraju značajno razlikovati od sfera, ali izgledaju poroznije i mehurastije. Veličina im se kreće u opsegu 10÷80 μm.…”

“…Some evaporate (Br, Cl, F, Hg, I), but the majority remains in the ash, and they are present in different size classes. Based on extensive research, Vassilev came to the conclusion that in the fly ash the following elements are concentrated [11,12]:…”