Cleaning of waste gases in the production of alloys that contain rare-earth metals

A simple and effective system has been developed to clean the waste gases formed in small furnaces. It is proposed that a 5-10% solution of Ca(OH) sub(2) be used to neutralize SO sub(2) in the gases. The correct amount of solution to use has been determined. Activated charcoal of the 3-20 mm fractio...

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Bibliographic Details
Published in:Metallurgist (New York) 2006-05, Vol.50 (5-6), p.215-218
Main Authors: Svanidze, Z S, Gogichaishvili, B G, Mikadze, O Sh, Kashakashvili, L L, Lomtatidze, G A, Buchukuri, T I
Format: Article
Language:English
Subjects:
Adsorbents
Alloys
Cleaning
Cleaning process
Desorption
Exhaust gases
Furnaces
Gases
Q1
R&D
Rare earth metals
Research & development
Systems (metallurgical)
Waste management
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Summary:A simple and effective system has been developed to clean the waste gases formed in small furnaces. It is proposed that a 5-10% solution of Ca(OH) sub(2) be used to neutralize SO sub(2) in the gases. The correct amount of solution to use has been determined. Activated charcoal of the 3-20 mm fraction has been tried as the adsorbent and can be used repeatedly after desorption. A high degree of efficiency is obtained in cleaning the waste gases: 88-99% for charges of composition I and 91-98% for charges of composition II.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-006-0066-x