General nature and using potentiality of fly ash in China
- China Univ. of Mining and Technology, Beijing (China)
- Beijing Jinyihua Co. Ltd. (China)
China is the largest fly ash producer of the world. Currently, it produces at least 100 million tons of fly ash each year. Since the different coal types, different coal forming conditions, and different burners are used around the country, the nature of fly ash produced in different plants varies. The characteristics of fly ash influence their utilization. In this paper, numerous data about the characteristics of fly ash in China are collected and analyzed, such as the main chemical components of fly ash (SiO{sub 2}, Al{sub 2}O{sub 3}, K{sub 2}O, Na{sub 2}O, CaO, MgO, Fe{sub 2}O{sub 3}), LOI (C content), and some trace elements and radioactive elements, grain size distribution, phase compositions including types, shapes and contents of glassy bodies, types of inorganic minerals, specific gravity, specific surface, ratio of water requirement, ratio of water content, 28-day compressive strength, etc. Based upon these parameters, methods of fly ash utilization are analyzed systematically. The methods of utilization incorporated with the nature of fly ash can improve the level of fly ash utilization. Fly ash in China is primarily used in road construction, production of building materials (cement, concrete, bricks, tiles, ceramsites and mortar), backfilling, construction engineering, agriculture, and materials recovery of useful components.
- OSTI ID:
- 349081
- Report Number(s):
- CONF-980985-; ISBN 1-890977-15-2; TRN: IM9924%%81
- Resource Relation:
- Conference: 15. annual international Pittsburgh coal conference, Pittsburgh, PA (United States), 14-18 Sep 1998; Other Information: PBD: 1998; Related Information: Is Part Of Fifteenth annual international Pittsburgh coal conference: Proceedings; PB: [1500] p.
- Country of Publication:
- United States
- Language:
- English
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