Leaching characteristics of trace elements in the sintered brick made from coal gangue and fly ash
WANG Mingshi
LIU Linyao
SONG Dangyu
Abstract：In order to grasp leaching characteristics of trace elements in the sintered brick made from coal gangue and fly ash, taking sintering brick with coal gangue and fly ash of raw material as the research object , ICP-MS is adopted to measure the content of trace elements (V, Co, Ni, Cu, Zn, As, Se, Pb) in leaching agent at different pH values and times , and leaching characteristics of trace elements is studied in sintered brick at different conditions and its environmental effects.The result showed that leaching contents of most trace elements in sintered brick increased with increasing soaking time and with reducing the acidity of leaching agent.Comprised with the environmental quality standard of underground water, the maximum leaching amount of Co, Ni and As were 1.8, 2.8 and 4.6 times, respectively, which caused more potential harm to the environment.
Keywords：fired bricktrace elementsleaching characteristicsenvironmental effects
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 823-827 )