Incorporation of V, Zn and Pb into the crystalline phases of Portland clinker

Journal Article · Wed Jan 01 04:00:00 EST 2003 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(02)00928-6· OSTI ID:20658259

Andrade, F R.D.; Maringolo, V; Kihara, Y

Burning of industrial wastes in cement kilns has an increasing environmental importance, brought about by the incorporation of potentially hazardous elements into clinker crystalline phases and partial substitution of primary fuel and raw materials. In this study, experimental clinkers were synthesized, with the addition of V, Zn and Pb to a standard raw meal, from which a control clinker was obtained for comparison. The three metals were chosen as they are present in the alternative fuel petcoke (V) and in industrial wastes (Zn, Pb) commonly burned in cement kilns. Electron microprobe and scanning electron microscope analysis revealed the preferential partition of these metals among the clinker crystalline phases. It was observed that V has shown a preferential partition towards C{sub 2}S. Zn appears in higher amounts in periclase, and C{sub 3}S has higher Zn contents than C{sub 2}S. Pb concentrates in minute spherules and partitions toward C{sub 3}S in small amounts.

• OSTI ID: 20658259
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 1 Vol. 33; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CEMENTS
ELECTRON MICROPROBE ANALYSIS
INDUSTRIAL WASTES
KILNS
LEAD
PARTITION
RAW MATERIALS
SCANNING ELECTRON MICROSCOPY
STANDARDS
VANADIUM
WASTE MANAGEMENT
ZINC