REDUCTION OF ENERGY CONSUMPTION IN THE SINTERING OF IRON ORE IMPROVEMENT OF REDUCTION PROPERTIES
Sinter tests with ores and concentrates available on the European market are performed in order to investigate whether the fuel consumption during sintering can be reduced further by selecting appropriate feed material. Another objective is an improvement of the reduction properties of the sinter product. A total of 111 pot grate tests are made, with 11 ore mixtures, applying optimum conditions according to the current state of experience. For part of the tests, bed heights of 50 and 60 cm are adjusted. Test evaluation gives the following findings: fuel consumption increases in proportion to the Al(2)O(3) content of the sinter, and also the FeO content of the sinter. This impairs reducibility and degradation behaviour at low temperature reduction of the sinter. In addition, the sinter decreases in size. A higher percentage of extremely fine particles in the ore mix likewise causes the fuel consumption to rise, with the consequences described above. Mechanical sinter strength decreases with reduced Fe(3)O(4) content of the ores, increasing proportions of fraction 0.1 - 1 mm and increasing throughput. The sintering temperature rises in proportion to the coke consumption.
Bibliographic Reference: EUR 12610 DE (1990), 91 PP., FS, ECU 8.75 ISBN 92-826-1242-2 THE OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES, L-2985 LUXEMBOURG
ISBN: ISBN 92-826-1242-2
Record Number: 1989128056500 / Last updated on: 1992-08-10
Original language: DE