F27B 1/02

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9951992 Metallurgical furnaceDec 22, 14Apr 24, 18Tecnored Desenvolvimento Tecnologico S.A.
9919965 Method for burning lump materialSep 09, 13Mar 20, 18Maerz Ofenbau AG
9869515 Suspension smelting furnace and a concentrate burnerJun 28, 11Jan 16, 18OUTOTEC OYJ
9266774 Method for burning pelletized goodMay 09, 12Feb 23, 16Maerz Ofenbau AG
9127886 Multistage furnace systemMar 14, 13Sep 08, 15TOA Industries Co., Ltd.
9011143 Parallel flow regenerative lime kiln and method for the operation thereofSep 15, 10Apr 21, 15Maerz Ofenbau AG
6453831 Method for burning lumpy combustion material, especially limestone, dolomite and magnesite, and regenerative shaft furnace for carrying out this methodAug 24, 01Sep 24, 02Not available
5174749 Method and apparatus for heat treatment of pulverous materialJul 02, 91Dec 29, 92F. L. Smidth & Co. A/S
5064174 Apparatus for production of energy and iron materials, including steelFeb 08, 88Nov 12, 91LEHTO, JOHN M.
4958808 Apparatus for producing sponge iron or pig ironMay 01, 89Sep 25, 90VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH & CO.
4687183 Apparatus for the production of liquid iron from iron oxideJan 16, 86Aug 18, 87Hoogovens Groep B.V.
4311519 Melting furnace for granulated metalDec 26, 79Jan 19, 82SOUTHWIRE COMPANY