| Patents for C21B 9 - Stoves for heating the blast in blast furnaces (1,401) |
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| 01/12/1994 | CN1080659A Waste air recoverying and utilizing method and device for hot-air furnace |
| 12/08/1993 | EP0572595A1 Water-cooled casing for a hot-blast slide valve |
| 12/01/1993 | EP0572238A1 Method and apparatus for monitoring temperature of blast furnace and temperature control system using temperature monitoring apparatus |
| 11/17/1993 | CN2146691Y Easy to unload balls and remove ash lattice ball-packing heat accumulator |
| 11/03/1993 | CN1077992A Water cooling case used for hot blast slide valve |
| 10/23/1993 | CA2093875A1 Air separation |
| 09/23/1993 | DE4220489C1 Operating air heater plant - using boiler heated closed circuit to preheat air and fuel feeds to reducing high value combustion fuels |
| 09/22/1993 | EP0561449A2 Ceramic burner for a hot-blast stove of a blast furnace |
| 09/22/1993 | CN1076490A Ceramic burner for a hot-blast stove of a blast furnace |
| 09/15/1993 | CN1076218A Hot blast stove and method for constructing a hot blast stove |
| 08/19/1993 | WO1993016345A1 Preheater for preheating air for example in a blast-furnace plant |
| 07/28/1993 | EP0552832A1 Hot blast stove and method for constructing a hot blast stove |
| 07/14/1993 | CN2138128Y Large power short flame burning apparatus |
| 06/19/1993 | WO1993012365A1 Water-cooled casing for a hot-blast slide valve |
| 06/19/1993 | CA2104395A1 Water-cooled housing for a hot-blast slide valve |
| 05/27/1993 | WO1993010388A1 Obturator for media at high temperatures |
| 05/27/1993 | WO1993010381A1 Stop slide valve |
| 03/30/1993 | CA1315097C Ceramic gas burner for a combustion chamber of a hot-blast stove |
| 12/09/1992 | CN1066886A Method of water spray wet addition and blowing for iron-smelting blast furnace |
| 09/09/1992 | CN2115342U Hot-blast stove grating body for blast furnace |
| 09/09/1992 | CN1064315A Method for feeding wind into blast furnace by blower and its equipment |
| 07/29/1992 | CN1017627B Hot-blast furnace blast chamber with air delivery apparatus |
| 07/16/1992 | DE4110065C1 Shut=off valve for hot gas line e.g. for hot blast ducting - has arc-shaped perforated plates near gas inlet aperture to ensure uniform distribution of cooling gas as it passes through plate |
| 06/23/1992 | CA1303849C Ceramic burner for a hot-blast stove |
| 06/10/1992 | CN1016993B Method and regenerator for heating gases |
| 06/03/1992 | CN1016890B Porcelain burner for hot-air blast |
| 04/29/1992 | CN2102933U Hot-blast stove protected with wind film and sheating board |
| 03/18/1992 | CN1015926B Ceramic gas burner for hot blast stove |
| 02/27/1992 | DE4041801C1 Reducing energy consumption in blast furnace - comprises reducing temp. drop of hot gases by using oil coolant with specified vapour pressure curve |
| 10/01/1991 | US5052922 Ceramic gas burner for a hot blast stove, and bricks therefor |
| 10/01/1991 | US5052918 Method and a regenerator for heating gases |
| 09/25/1991 | CN1054840A Method for making optically readable media containing embossed information |
| 09/18/1991 | CN1054660A Multi-hole hollow ceramics burner of hot-blast stove |
| 09/03/1991 | US5044940 Blast furnace air heater |
| 08/28/1991 | CN2083589U Seven ring plate hot blast stove |
| 07/23/1991 | US5033958 Burner for a hot-blast furnace |
| 05/08/1991 | CN1051163A Sillimanite refractory ball and prepn. thereof |
| 04/24/1991 | EP0423862A1 Hot blast main contructions including a junction |
| 04/24/1991 | CN2075742U Straight seam jet for blast furnace blast-heating cupola ceramic burner |
| 04/24/1991 | CN2075653U Concentrate heat exchange strong wind warm ball type hot wind furnace group |
| 03/27/1991 | CN2073880U Hot tube disc type fire grate hot-air furnace |
| 03/05/1991 | US4997362 Ceramic burner |
| 01/22/1991 | US4986749 Method for determining a leak in a breast wall of a regenerative heat recuperator |
| 01/09/1991 | CN1048447A Ceramic gas burner for hot blast stove, and bricks therefor |
| 01/02/1991 | EP0405639A1 A ceramic gas burner for a hot blast stove, and bricks therefor |
| 12/12/1990 | CN1010788B Ceramic gas burner for combustion chamber of hot-blast stove |
| 12/05/1990 | CN2066863U Grate for blast furnace hot-blast stove and support pillar |
| 11/22/1990 | EP0398001A1 Burner for cowper |
| 09/26/1990 | EP0389009A2 Method for determining a leak in a breast wall of a regenerative heat recuperator |
| 08/08/1990 | CA2009539A1 Method for determining a leak in a breast wall of a regenerative heat recuperator |
| 06/20/1990 | EP0373450A1 Process and regenerative heat exchange apparatus for gas heating |
| 06/20/1990 | CN1043198A Method and regenerator for heating gases |
| 04/24/1990 | US4919885 Lower carbon, nitrogen, titanium content |
| 03/28/1990 | CN2055137U Coal-burning hot-blast stove with flue gas partial recirculation |
| 02/28/1990 | CN1040055A Hot-blast furnace blast chamber with air delivery apparatus |
| 01/03/1990 | EP0349513A1 Thermic shield permitting renovation of Cowpers and process for its putting into practice |
| 11/21/1989 | US4881895 Ceramic gas burner for a combustion chamber of a hot-blast stove |
| 10/04/1989 | CN2045388U Cas preheating device for blast furnace hot blast stove |
| 09/26/1989 | CA1259792A1 Hot air vane |
| 09/05/1989 | US4863378 Ceramic burner for a hot-blast stove |
| 07/26/1989 | CN2041690U Self-preheating internal centre burning hot-blast stove |
| 06/14/1989 | CN1033411A Porcelain burner for hot-air blast |
| 05/17/1989 | CN2037736U Hot-blast stove using fuel |
| 05/09/1989 | CA1253687A1 Sheathing for cowpers or the like |
| 04/05/1989 | CN1032191A Ceramic gas burner for combustion chamber of hot-blast stove |
| 03/08/1989 | EP0306072A1 Ceramic gas burner for a combustion chamber of a hot-blast stove |
| 12/06/1988 | CA1245856A1 Cowper having no combustion shaft |
| 12/01/1988 | DE3717497A1 Dome for grid shaft and/or combustion chamber of hot-blast stove |
| 08/23/1988 | CA1240837A1 Chequer-brick for vertical cowpers and cowper chequerwork constructed from these chequer-bricks |
| 07/27/1988 | EP0275859A1 Pressure gas preheater |
| 07/12/1988 | CA1239021A1 Monolithic refractory honeycomb filter for molten metals |
| 05/18/1988 | CN85100733B Preheating type multi-fire-hole circular burner for hot-air stove |
| 03/16/1988 | CN85100769B High temp. hot air valve cooled by vaporization |
| 03/09/1988 | CN86105898B Method for making assembly bricks with circular petal shape |
| 02/24/1988 | EP0256429A1 Constructional steel resistant to stress corrosion cracking |
| 01/27/1988 | CN87207892U Blast inlet device for ironmaking blast furnace |
| 09/01/1987 | US4690872 Ceramic heater |
| 07/21/1987 | US4681624 Zircon, open cells |
| 05/20/1987 | CN86105898A Mother brick of assembly bricks with circular petal shape |
| 05/19/1987 | US4666403 Air preheating system for continuous fired furnace |
| 04/28/1987 | US4660593 Hot-blast gate valve |
| 12/16/1986 | US4628869 Variable temperature waste heat recovery system |
| 09/30/1986 | US4614496 Cowper having no combustion shaft |
| 08/20/1986 | CN85205084U Iron-steel chips-melting furnace with double (hot air-cooling water) liners |
| 08/20/1986 | CN85100769A High temp. hot air valve cooled by vaporization |
| 08/20/1986 | CN85100733A Annular multi-orifice burner for the top-conbustion blast-heating furnace |
| 07/23/1986 | CN85204446U Blast furnace and hot-blast furnaces combined iron-smelting installation |
| 06/10/1986 | US4593751 Chequer-brick for vertical cowpers and cowper chequerwork constructed from these chequer-bricks |
| 04/29/1986 | CA1203685A1 Ceramic burner for gas, particularly for a hot-blast stove for a blast furnace |
| 04/15/1986 | US4582485 Blast furnace stove |
| 03/10/1986 | CN85101619A Top-burning hot-blast stove with hot-air passage |
| 02/19/1986 | EP0171754A1 Hot blast slide valve |
| 02/10/1986 | CN85104443A Temperature control of hot-blast of alter-parallel blasting from the stove of blast furnace |
| 11/19/1985 | US4553731 Fail-closed, tight seal gas safety valve system |
| 11/19/1985 | CA1196783A1 Blast furnace stove wall |
| 10/08/1985 | CA1194694A1 Ceramic burner for a hot blast stove |
| 09/17/1985 | US4541864 Blast furnaces, heat exchanging |
| 08/01/1985 | WO1985003310A1 Improvement to envelopes of cowpers or similar apparatus |
| 07/24/1985 | EP0149575A2 Improved shells for hot blast stoves or identical apparatus |
| 05/02/1985 | EP0139255A1 Cowper having no combustion shaft |