Optimised vertical-shaft kiln for producing sulfoaluminous clinker

摘要

The invention relates to a vertical-shaft kiln (2) for manufacturing a clinker, including:
a tubular enclosure (4) comprising from top to bottom:
a feeder section (14);a decarbonatation section (16) exhibiting a slanted lower surface (16a);a clinkering section (18) exhibiting a slanted lower surface (18a);a first collection section (20) extending substantially vertically;first extraction means (42) arranged for extracting the clinker from the first collection section (20);means arranged for generating a first gas exhibiting a temperature ranging between 950° C. and 1250° C., and for supplying the first gas in the decarbonatation section (16);means arranged for generating a second oxidizing gas exhibiting a temperature ranging between 1250° C. and 1450° C., and for supplying the second oxidizing gas in the clinkering section (18); andfirst suction means for suctioning the first and second gas from the feeder section (14).

主权项

1. A vertical-shaft kiln for manufacturing a clinker, comprising:
a tubular enclosure comprising from top to bottom: a feeder section extending substantially vertically, configured for receiving a raw mix; a decarbonation section exhibiting a lower surface slanted with respect to the vertical; a clinkering section exhibiting a lower surface slanted with respect to the vertical; a first collection section extending substantially vertically; first extraction means configured for extracting the clinker from the first collection section, suitable for modulating an extraction output of the clinker; first generation means configured for generating a first gas exhibiting a temperature ranging between 950° C. and 1250° C.; first supply means configured to supply the first gas in the decarbonation section; second generation means configured for generating a second oxidizing gas exhibiting a temperature ranging between 1250° C. and 1450° C.; second supply means configured to supply the second oxidizing gas in the clinkering section; and first suction means configured for suctioning the first and second gas from the feeder section; wherein the decarbonation section and the clinkering section exhibit rectangular transversal sections; the decarbonation section and the clinkering section exhibit upper surfaces slanted with respect to the vertical; a lower edge of the lower surface of the decarbonation section extends substantially vertically in line with a lower edge of the upper surface of this decarbonation section; and a lower edge of the lower surface of the clinkering section extends substantially vertically in line with a lower edge of the upper surface of this clinkering section.