4. Environment
The slag leaving the blast furnace contains sulfur, which, on contact with air, transforms into dioxide and sometimes gives off hydrogen sulfide with the water; this release is often mixed with the steam caused by cooling the slag in the pit, and especially by granulation. It is practically impossible to capture these vapors above the pits, gutters or granulation basins; however, the granulation pot can be topped by a chimney that collects the steam, where it is condensed by spraying with water. Water contaminated by granulation can be recovered, cooled and reused.
Pelletizing produces specific nuisances: noise, due to the drum's operation, and the occasional formation of slag wool, which scatters around the plant. The remedy for these nuisances is to install a hood fitted with a mesh that retains the slag wool like a filter. In return, the sulfur is trapped in...
The Ultimate Scientific and Technical Reference
This article is included in
Metal manufacturing processes and recycling
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Environment
Marketing
Bibliography
References
Theses
Standardization
- Liants hydrauliques. Ciments courants. Composition, spécifications et critères de conformité. - NF P15-301 - 6-1994
- Liants hydrauliques. Ciments de laitier à la chaux CLX. - NF P15-306 - 10-1964
- Granulats. Mesures des masses volumiques, de la porosité, du coefficient d'absorption et de la teneur en eau des gravillons et cailloux. - P18-554 - 12-1990
- Granulats. Essai d'usure micro‐DEVAL. - P18-572 -...
Organizations
Centre technique et de promotion des laitiers sidérurgiques (CTPL) http://www.ffacier.org/pages/rubriques-ffa/ctpl
Euroslag http://www.euroslag.org
The Ultimate Scientific and Technical Reference
