Injection system improves arc furnace efficiency
A
Clyde Materials Handling product story
Edited by the Engineeringtalk editorial team
Sep 20, 2002
Equipment and technology supplied by Clyde Materials Handling is playing a major part in increasing the efficiency of electric arc furnaces used in steel production in Brazil.
Equipment and technology supplied by Clyde Materials Handling is playing a major part in increasing the efficiency of electric arc furnaces used in steel production in Brazil.
In recent years, and because of the ample supply of raw materials, Brazil has developed into one of the leading steel producing nations in the world.
Brazilian steel producers using electric arc furnaces, have installed carbon and oxygen injection systems to improve the efficiency of the furnaces and increase steel production, but encountered problems with their existing systems which were found to be difficult to control and easily upset by changes in the materials composition and variances in the bulk densities.
The technology required in steel making makes it essential that there is an accurate, controlled feed of materials into the electric arc furnace on a 24 hour basis.
Clyde Materials Handling was approached to provide a solution to these problems.
Consultation took place with Clyde's technical department and using the latest technology and drawing on experience gained over many years, Clyde was successful in providing a solution.
The answer was to retrofit existing injection vessels with Clyde Rotoscrews and a specially designed, flexible pipeline to the moving injection ports of the arc furnace, providing accurate and reliable feed rate control of material entering the furnace.
This control ensures that the increased efficiency of the furnace is maintained and allows for increased production.
The Clyde injection system incorporated in this application is just one of the many examples of injection technologies available from Clyde.
These systems have the ability to handle a wide range of materials from fine powders to granular, lumpy materials such as abrasive petroleum coke, with injection rates from a few kilograms per hour up to 200-300t/h at accuracies better than 0.5%, and the capability to inject against high back pressure up to 20bar(g) or more.
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