Abstract
Raw materials for cement production contain traces of volatilizable heavy metals and halogens like thallium and iodine, which will be enriched in the fly dust. The cement kiln plant operates continuously and selectively like a volatilization apparatus in industrial dimension. Mass balances carried out on two grate type preheater cement kilns demonstrate that the extremely volatile iodine was emitted into the atmosphere as gas phase as well as found in the electrostatic precipitator dust at higher concentrations. The experimental results show that iodine and thallium both combine in the absence of oxygen inspite of the presence of an excess of other potential reactants. On the other hand, thallium iodide thermally decomposes easily in the presence of oxygen and clay minerals to form elemental iodine. The iodine in the electrostatic precipitator dusts varies in its concentrations, depending on the level of iodine input, type of kiln and operation mode, respectively. (orig./BWI).
Citation Formats
Weisweiler, W, and Mallonn, E.
Thallium iodide - formation, evaporation, accumulation. Iodine and thallium in the cement production process. Thalliumiodid - Bildung, Verfluechtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozess.
Germany: N. p.,
1992.
Web.
Weisweiler, W, & Mallonn, E.
Thallium iodide - formation, evaporation, accumulation. Iodine and thallium in the cement production process. Thalliumiodid - Bildung, Verfluechtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozess.
Germany.
Weisweiler, W, and Mallonn, E.
1992.
"Thallium iodide - formation, evaporation, accumulation. Iodine and thallium in the cement production process. Thalliumiodid - Bildung, Verfluechtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozess."
Germany.
@misc{etde_7016465,
title = {Thallium iodide - formation, evaporation, accumulation. Iodine and thallium in the cement production process. Thalliumiodid - Bildung, Verfluechtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozess}
author = {Weisweiler, W, and Mallonn, E}
abstractNote = {Raw materials for cement production contain traces of volatilizable heavy metals and halogens like thallium and iodine, which will be enriched in the fly dust. The cement kiln plant operates continuously and selectively like a volatilization apparatus in industrial dimension. Mass balances carried out on two grate type preheater cement kilns demonstrate that the extremely volatile iodine was emitted into the atmosphere as gas phase as well as found in the electrostatic precipitator dust at higher concentrations. The experimental results show that iodine and thallium both combine in the absence of oxygen inspite of the presence of an excess of other potential reactants. On the other hand, thallium iodide thermally decomposes easily in the presence of oxygen and clay minerals to form elemental iodine. The iodine in the electrostatic precipitator dusts varies in its concentrations, depending on the level of iodine input, type of kiln and operation mode, respectively. (orig./BWI).}
journal = []
volume = {52:3}
journal type = {AC}
place = {Germany}
year = {1992}
month = {Mar}
}
title = {Thallium iodide - formation, evaporation, accumulation. Iodine and thallium in the cement production process. Thalliumiodid - Bildung, Verfluechtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozess}
author = {Weisweiler, W, and Mallonn, E}
abstractNote = {Raw materials for cement production contain traces of volatilizable heavy metals and halogens like thallium and iodine, which will be enriched in the fly dust. The cement kiln plant operates continuously and selectively like a volatilization apparatus in industrial dimension. Mass balances carried out on two grate type preheater cement kilns demonstrate that the extremely volatile iodine was emitted into the atmosphere as gas phase as well as found in the electrostatic precipitator dust at higher concentrations. The experimental results show that iodine and thallium both combine in the absence of oxygen inspite of the presence of an excess of other potential reactants. On the other hand, thallium iodide thermally decomposes easily in the presence of oxygen and clay minerals to form elemental iodine. The iodine in the electrostatic precipitator dusts varies in its concentrations, depending on the level of iodine input, type of kiln and operation mode, respectively. (orig./BWI).}
journal = []
volume = {52:3}
journal type = {AC}
place = {Germany}
year = {1992}
month = {Mar}
}