Method of operating a sinter plant
AssigneePaul Wurth S.A.
InventorKlaus Peter Kinzel
Life of this patent
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Abstract
The invention concerns a method of operating a sinter plant, where a sinter mix is fired in a sintering machine, the method including crushing fired sinter to below an upper particle size limit; screening the crushed sinter to remove fines and separate at least two sinter size fractions, typically smaller, intermediate and upper size fractions; storing each of the at least two sinter size fractions in a respective, separate storage bin, where the screened sinter fractions are not mixed again at the sinter plant but are forwarded to the blast furnace plant, where they are stored in respective, separate storage bins, and the screened sinter fractions can be intermediately stored in separate bins at the sinter plant, before being forwarded to the blast furnace.
Claims9
A method of operating a blast furnace in a blast furnace plant comprising a blast furnace stock house, wherein said stock house includes storage bins for sinter,
- wherein said storage bins for sinter are fed with sinter forwarded from a sinter plant, said sinter being size-classified according to a method of operating the sinter plant,
- wherein a sinter mix is fired in a sintering machine, said method comprising the following steps:
- (a) crushing fired sinter to below an upper particle size limit in the range of 40 to 100 mm;
- (b) screening the crushed sinter to remove fines and separate at least two sinter size fractions;
- and
- (c) storing each of said at least two sinter size fractions in a respective, separate storage bin,
- wherein each size fraction has a predetermined particle size range that is distinct from the other sinter fractions without overlapping;
- wherein said blast furnace is charged according to a predetermined blast furnace charging sequence implementing sinter size classification;
- and
- wherein sinter from a desired size fraction, as withdrawn from the corresponding storage bin, is charged separately from other size fractions in the blast furnace, to form a material layer at a desired location.
Dependencies are inferred from the claim text.