The influence of the type of fly ash on selected physical properties of their water mixtures (multiphase mixtures)

INNOVATIVE MINING TECHNOLOGIES IMTech 2019 Scientific and Technical Conference

工业技术（总论）

Pierzyna, P.^1

Silesian University of Technology, Faculty of Mining and Geology, Akademicka 2, Gliwice

44-100, Poland^1

关键词: Excess waters;    Fine fraction;    Fluidized bed boilers;    Migration properties;    Multi-phase mixtures;    Road engineering;    Underground mining;    Water mixture;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/545/1/012004/pdf
DOI  :  10.1088/1757-899X/545/1/012004

学科分类：工业工程学

来源: IOP

【 摘 要 】

Waste from energy or mining has been widely used in civil engineering for many years, ie in road engineering, construction, land reclamation as well as in mining. The most frequently performed technologies in underground mining with fine-fraction waste are the sealing of infarcted grouting of cavings and liquidation. In these technologies, transport and migration properties play a primary role. They depend on the type of fly ash. At present, in Polish hard coal mines located in Upper Silesia, most commonly used technologies are ashes with code 10 01 02 from conventional boilers, and as second ashes from code 10 02 82 from fluidized bed boilers. The article presents the results of research on selected physical properties of ash-water mixtures such as: water-Ash index (W/FA), leveling, density and volume of excess water. Furthermore, for the tested ashes, the volume of water was determined, which can be utilized in the case of the technologies described above, and it will constitute an added value.