| Patents for C21B 7 - Blast furnaces (8,339) |
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| 03/09/1994 | EP0585422A1 Agricultural chemical distributor |
| 03/02/1994 | CN1083114A Machine for piercing a taphole for a shaft furnace |
| 02/09/1994 | CN1023717C Apparatus for enforced recovery of gas exhausted from top of blast furnace |
| 02/02/1994 | EP0580693A1 Trap trench. |
| 01/26/1994 | CN1023609C Tornado generator and its field-effect wind supply method |
| 01/19/1994 | CN1080960A Method and device for the injection of pulverised coal into a blast-furnace crucible |
| 01/19/1994 | CN1023568C Guide barrel for transferring iron melt and its cooling method |
| 01/18/1994 | US5279639 Compositions for synthesizing ladle slags |
| 01/05/1994 | EP0576869A2 Method and apparatus for injecting pulverized coal into a blast furnace |
| 01/05/1994 | EP0576784A1 Boring cutter head for taping hole of shaft furnaces |
| 01/02/1994 | CA2098514A1 Method and device for the injection of pulverised coal into a blast furnace crucible |
| 12/29/1993 | EP0576414A1 Process for the production of molten pig iron or steel pre-products as well as arrangement for carrying out the process |
| 12/23/1993 | WO1993025715A1 Slag separator |
| 12/22/1993 | EP0574729A1 Shaft furnace taphole piercing machine |
| 12/21/1993 | US5271609 Plant comprising a shaft |
| 12/21/1993 | CA1325387C Process and installation for the treatment of a stream of gas containing pyrophoric dust |
| 12/18/1993 | CA2098564A1 Taphole piercing machine for shaft furnace |
| 12/15/1993 | EP0573766A1 Combination clamping chuck for a shaft furnace taphole piercing machine |
| 12/11/1993 | CA2095464A1 Universal chuck for a machine for piercing a tap hole of a shaft furnace |
| 12/02/1993 | DE4317383A1 Fire-resistant material for use as liner for pig iron@ tapping spouts - contg. spinel aggregate plus silicon carbide to hydrophilic carbon of specific particle size to high corrosion-resistance |
| 12/01/1993 | EP0572238A1 Method and apparatus for monitoring temperature of blast furnace and temperature control system using temperature monitoring apparatus |
| 12/01/1993 | CN1022932C Blast furnace top distributing assemblage |
| 11/28/1993 | CA2095469A1 Process for inserting easily a piercing rod in a tap hole of a shaft furnace and special clamp thereof |
| 11/24/1993 | EP0571358A1 Process for the direct reduction of particulate material containing iron oxide |
| 11/24/1993 | CN2147245Y Clock valve furnace top with trolley timing and coke leading pipe |
| 11/24/1993 | CN2147046Y Long-life conical distributor |
| 11/16/1993 | US5262367 Magnesite, flake graphite, lining for metallurgical furnaces |
| 11/10/1993 | CN2145999Y Sampling white cast moulding die of simultaneously assaying multiple elements in pig iron |
| 11/09/1993 | US5259880 Projection molten impeller for concave section used in apparatus |
| 11/03/1993 | EP0567513A1 Blast pipe and tuyere arrangement. |
| 10/20/1993 | EP0660767A4 Regulation of flowrate of liquid furnace products. |
| 10/12/1993 | US5252063 Cooling device for the distribution chute of an installation for charging a shaft furnace |
| 10/12/1993 | US5251882 Liquid-carrying cooling element for shaft furnaces |
| 10/05/1993 | US5249959 Device for the rapid repair of a blast-furnace plate |
| 09/29/1993 | CN2142841Y Over-pressure self-opening type discharging valve for top of blast furnace |
| 09/22/1993 | CN1022190C Blast furnace gas fully-dried type electric dust cleaning method |
| 09/21/1993 | US5246485 Method and apparatus for preventing fume production when transporting molten metal from a metallurgical vessel to casting vessels |
| 09/21/1993 | US5246483 Multicompartment vessels, settling means for melts, refractory material linings and coolants |
| 09/21/1993 | US5246208 Method for botting the tap hole of a shaft furnace and botting machine for the implementation of this method |
| 09/15/1993 | CN2142114Y Blast furnace tuyere water jacket with cast-in wear-resisting casing |
| 09/15/1993 | CN1022114C Apparatus for recovering blast furnace gas |
| 09/14/1993 | US5244188 Locking device for the overextensioning of a pipeline compensator |
| 09/08/1993 | EP0394443B1 Method and apparatus for preliminary treatment of hot metal |
| 09/02/1993 | WO1993016589A1 Agricultural chemical distributor |
| 08/24/1993 | US5238484 Plant for the production of molten metals and method |
| 08/18/1993 | CN1075339A Method for cementation of compasite alloy on tuyere surface of blast furnace |
| 08/18/1993 | CN1021833C Blast furnace operation management method and apparatus |
| 08/11/1993 | EP0358711B1 Plasma fired feed nozzle |
| 08/11/1993 | CN1075168A External non-bell cap chute arranger for furnace |
| 08/05/1993 | WO1993015231A1 Machine for forming the taphole of a tank furnace |
| 08/04/1993 | CN1074942A Machine for piercing a taphole for a shaft furnace |
| 08/04/1993 | CN1074941A Machine for piercing a taphole for a shaft furnace |
| 08/04/1993 | CN1074940A Machine for piercing a taphole for a shaft furnace |
| 07/28/1993 | EP0552476A2 Apparatus for opening the taphole of a shaft furnace |
| 07/28/1993 | CN2139127Y Bag-type duster for small blast furnace |
| 07/25/1993 | CA2087491A1 Machine for piercing a taphole in a tank furnace |
| 07/14/1993 | CN2138127Y Hollow circular tuyere of blast furnace |
| 07/14/1993 | CN2138126Y Inlaid blast furnace slag escape |
| 07/06/1993 | US5225145 Apparatus for opening and closing a taphole of a metallurgical furnace |
| 07/06/1993 | US5225086 Process for the treatment of wash water from the gas washing system of an iron ore reduction plant |
| 06/30/1993 | CN1021481C Installation for charging shaft furnace |
| 06/29/1993 | US5223908 Measurement of blast furnace raceway parameters |
| 06/17/1993 | DE4141457A1 Method of producing fluid cooled tube wall for metallurgical vessel - is self-sustaining structure of tubes welded at ends to fittings which are themselves welded one above other to form side columns |
| 06/16/1993 | EP0546886A1 Cooling plates for metallurgical units, especially for blast furnaces |
| 06/16/1993 | CN2136249Y Smelting furnace by well-sinking method |
| 06/16/1993 | CN1073211A Machine for boring a tap hole of a shaft furnace |
| 06/09/1993 | CN1072960A Hydraulic tapping machine for blast furnace |
| 06/09/1993 | CN1021124C Method and device for opening taphole of shaft furnace |
| 06/08/1993 | US5217658 Cooling by feeding liquid nitrogen while removing slag from interior wall, then coating a refractory linings |
| 06/02/1993 | CN1072725A Tapping device of blast furnace enclosed iron-channel with slide door |
| 06/01/1993 | CA1318486C Repair of the refractory lining of the wall of a shaft furnace and a repaired shaft furnace |
| 05/26/1993 | EP0456641B1 Process for preventing the formation of flue gases in metallurgical processes and during the transport of molten metal from a metallurgical vessel to casting vessels and device for transporting molten metals from a metallurgical furnace to a casting vessel |
| 05/19/1993 | EP0542717A1 Blast furnace operation management method and apparatus |
| 05/19/1993 | CN2133588Y 小高炉炉顶密封装置 Small blast furnace sealing device |
| 05/11/1993 | US5209657 Device for injecting preheated air into a shaft furnace and process of manufacturing ball-and-socket joints |
| 05/05/1993 | EP0539752A1 Apparatus for opening the taphole of a shaft furnace |
| 05/04/1993 | CA1317157C Device for injecting preheated air into a shaft furnace |
| 05/01/1993 | CA2081788A1 Blast furnace tap hole drilling machine |
| 04/28/1993 | CN2130820Y Cloth-bag dedusting vibrator for blast furnace gas |
| 04/20/1993 | US5203063 Device for mounting and dismounting shaft furnace tymps |
| 04/06/1993 | CA1315544C Machine for drilling tapholes of a shaft furnace |
| 04/06/1993 | CA1315542C Retaining structure for refractory lining in high temperature vessel |
| 03/24/1993 | CN1020157C Surface treating method for tuyere or slag escape of balst furnace |
| 03/23/1993 | US5196155 Removable filter sieve for combustion piping |
| 03/23/1993 | US5196050 Weighing |
| 03/17/1993 | CN1070003A High efficient low consumption blast furnace design |
| 03/09/1993 | US5192489 Device for opening the taphole of a shaft furnace |
| 02/24/1993 | CN2127392Y Wholly-casting through-flow type tuyere sleeve |
| 01/20/1993 | EP0523167A1 Compositions and methods for synthesizing ladle slags, treating ladle slags, and coating refractory linings |
| 01/13/1993 | CN1067877A Stemming as filler of iron notch of blase furnace |
| 01/12/1993 | US5178819 Tuyere blocks of vertical reactor furnaces |
| 01/12/1993 | US5178818 Metallurgical furnace installation |
| 01/07/1993 | WO1993000579A1 Core extracting device in a metallurgical blast furnace or the like |
| 01/07/1993 | EP0382827B1 Process and device for cleaning conveying channels |
| 01/06/1993 | CN1067683A Cooling device for distribution chute of installation for charging shaft furnace |
| 12/23/1992 | EP0519553A1 Method of repair of the refractory lining of the wall of a shaft furnace |
| 12/23/1992 | EP0519397A1 Tap hole drilling machine |
| 12/22/1992 | US5173244 Slag control apparatus and method |
| 12/13/1992 | CA2070506A1 Cooling device for the distribution chute of a shaft kiln charging installation |
| 12/09/1992 | CN1066890A Anti-seepage carbon coating and coating method |