Method and apparatus for manufacturing non-fired iron-bearing pe

Details Method and apparatus for manufacturing non-fired iron-bearing pe Method and apparatus for manufacturing non-fired iron-bearing pe

1983-12-06

1985-05-07

Rutledge, L. Dewayne

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266178, 266197, C22B 108

Patent

active

045153515

ABSTRACT:
A treating furnace for manufacturing non-fired iron-bearing pellets comprising a green iron-bearing pellet inlet at one end thereof and a non-fired iron-bearing pellet outlet at the other end. Green iron-bearing pellets are continuously fed into the treating furnace through said inlet and after being heated are discharged through said outlet. The treating furnace contains at least one heating gas blowing port for blowing heating gas into the furnace and at least one heating gas discharge port for discharging said gas after it has heated the pellets. The furnace also contains a preheating zone and at least one preheating gas blowing port and at least one preheating gas discharge port to pass preheating gas through said preheating zone. The heating gas discharged from the heating gas discharge port is used as the preheating gas. The gas discharged from the heating gas discharge port is admixed with the gas discharged from the preheating gas discharge port and then the thus mixed gas is utilized as the feed preheating gas to the preheating gas blowing (inlet) port.

REFERENCES:
patent: 2948521 (1960-08-01), Heiligenstaedt
patent: 3005699 (1961-10-01), Enck et al.
patent: 3877868 (1975-04-01), Wenzel et al.
patent: 4049435 (1977-09-01), Lotosh et al.
patent: 4332551 (1982-06-01), Haslmayr et al.
D. F. Ball et al., "Agglomeration of Iron Ores", 1973, Am Elsevier Pub. Comp. Inc., New York, pp. 308-313.

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