F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/18, 39/30
F27B 7/28 (2006.01) C21B 13/08 (2006.01) C22B 5/10 (2006.01) C22B 23/02 (2006.01) F27B 7/20 (2006.01) F27B 7/34 (2006.01)
Patent
CA 1224920
ABSTRACT OF THE DISCLOSURE: The invention relates to a rotary kiln for use in the subjecting of an ore of an oxide of at least one element selected from the elements in the Iron Group to a semi-molten reduction-smelting operation, the rotary kiln having a dam ring of an improved construction provided so as to project from the portion of the lining of said kiln which is at the product-discharging end thereof. A main burner as well as an auxiliary burner provided at the discharge end of the kiln is used to heat the kiln, and a combustion chamber having a high heat insulating capability is connected to the kiln. In the combustion chamber, the distance between the free ends of the burners and the discharge end of the kiln is set at a suitable level. The invention also relates to a method of semi-molten reduction-smelting such an ore in the above rotary kiln, this method enables an improvement in the yield of valuable metals, and the carrying out of such a reduction-smelting operation in the kiln over a long period of time.
430061
Arai Haruo
Matsuda Masakata
Nippon Yakin Kogyo Kabushiki Kaisha
Smart & Biggar
LandOfFree
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