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