C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
39/34, 53/7
C22B 1/243 (2006.01) C22B 1/24 (2006.01)
Patent
CA 1199497
METHOD AND APPARATUS FOR CONTINUOUSLY MANUFACTURING NON-SINTERED PELLET ABSTRACT OF THE DISCLOSURE A method and an apparatus for continuously manufacturing a non-sintered pellet, which comprises: continuously supplying a green pellet having a water content of from 6 to 20 wt.% into a shaft type reactor to continuously pass the green pellet sequentially through a pre-treating zone, a hydration reaction zone and a drying zone in the shaft type reactor; blowing a pre-treating gas with a relative humidity of up to 70% and at a temperature of from 65 to 250°C into the pre- treating zone to pre-dry the green pellet in the pre- treating zone until the difference in the water content in the green pellet between before and after the above- mentioned pre-drying becomes at least 4 wt.% within the limits in which the green pellet in the pre-treating zone contains at least 2 wt.% water; blowing a gas for hydration reaction at a temperature of from 50 to 100°C containing saturated steam into the hydration reaction zone to hydrate the green pellet in the zone; and, blowing a drying gas at a temperature of from 100 to 300 °C into the drying zone to dry the green pellet in the zone, thereby hardening the green pellet in the drying -1-
419645
Matsui Seiji
Miyashita Tsuneo
Nakayama Michio
Tajima Osamu
Yoshikoshi Hideyuki
Macrae & Co.
Nippon Kokan Kabushiki Kaisha
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