| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 266047000 | Tuyere operation | 12 |
| 20100044930 | INJECTION METHOD FOR INERT GAS - A method and apparatus for forming internally shrouded supersonic coherent jets comprising an inert gas, such as pure argon and argon/oxygen mixtures. This method and apparatus can be employed to produce low-carbon steels with a top lance in basic oxygen steelmaking. | 02-25-2010 |
| 20110101576 | Tuyere for Manufacturing Molten Iron and Method for Injecting Gas Using the Same - A tuyere for manufacturing molten iron is provided. The tuyere includes i) an oxygen injection opening that is configured to inject oxygen therethrough, and ii) a sealing gas injection opening that is located to be spaced apart from the oxygen injection opening and is configured to inject a sealing gas surrounding the oxygen. | 05-05-2011 |
| 20110127702 | DYNAMIC CONTROL OF LANCE UTILIZING COUNTERFLOW FLUIDIC TECHNIQUES - A jet of gas injected from a lance is fluidically deviated with a gas flowing in either the same or opposite direction as the jet of gas. The gas used to fluidically deviate the jet is the same as or different from the gas in the jet. | 06-02-2011 |
| 20110180978 | METHOD FOR FEEDING PULVERISED COAL INTO A BLAST FURNACE - The present invention proposes a method for feeding pulverised coal into a blast furnace, wherein the method comprises the following steps: providing a tuyere stock ( | 07-28-2011 |
| 20120007291 | TUYERE STOCK ARRANGEMENT FOR A BLAST FURNACE AND METHOD FOR FEEDING HOT BLAST INTO A BLAST FURNACE - Tuyere stock arrangement ( | 01-12-2012 |
| 20140159287 | METHOD FOR OPERATING A BLAST FURNACE - A method of operating a blast furnace includes two or more lances that inject reducing agents from a tuyere; injecting a solid reducing agent and a flammable reducing agent from different lances; and disposing the lances so that an axial line that extends from an end of the lance that injects the solid reducing agent and is the axial line of the lance that injects the solid reducing agent and an axial line that extends from an end of the lance that injects the flammable reducing agent and is the axial line of the lance that injects the flammable reducing agent cross each other, and so that a main flow of the solid reducing agent injected and a main flow of the flammable reducing agent injected overlap. | 06-12-2014 |
| 20150091224 | RAW MATERIAL SUPPLY APPARATUS, RAW MATERIAL SUPPLY METHOD AND FLASH SMELTING FURNACE - A raw material supply apparatus that supplies a raw material into a flash smelting furnace and supplies a first gas contributing to a reaction of the raw material into the flash smelting furnace, includes: a raw material passage that is provided out of a lance through which the first gas passes, the raw material passing through the raw material passage; and an adjuster that adjusts a distribution of the raw material by blowing a second gas to the raw material passing through the raw material passage. | 04-02-2015 |
| 20160040261 | BLAST FURNACE OPERATION METHOD AND LANCE - A method is provided for operating a blast furnace by blowing a solid reducing material, a flammable gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace, wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube is used, and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes, while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance as well as a lance structure thereof. | 02-11-2016 |
| 20160053338 | BLAST FURNACE OPERATION METHOD - A method is provided for operating a blast furnace by blowing at least a solid reducing material and a combustible gas into the furnace through tuyeres with a lance inserted into a blowpipe, wherein a tube-bundle type lance obtained by bundling a plurality of blowing tubes is used and when only a solid reducing material or two kinds of a solid reducing material and a combustible gas or three kinds of a solid reducing material, a combustible gas and a gaseous reducing material is simultaneously blown into an inside of the blast furnace through a tube for blowing the solid reducing material, a tube for blowing the combustible gas and a tube for blowing the gaseous reducing material in the tube-bundle type lance, two or more tube-bundle type lances are inserted into the blowpipe to approximate their front ends to each other and blowing is performed so that the respective blowout streams interfere with each other in the blowpipe. | 02-25-2016 |
| 20160138120 | BLAST FURNACE OPERATION METHOD - A method of operating a blast furnace by blowing a pulverized coal at an amount of not less than 150 kg/t−p from tuyeres through a lance into a blast furnace, wherein when the operation is performed under a condition that lump coke charged from a furnace top has a strength defined in JIS K2151 (DI | 05-19-2016 |
| 20160138867 | FEED FLOW CONDITIONER FOR PARTICULATE FEED MATERIALS - A feed charging device comprises a holding vessel having an interior chamber for holding a reserve of a solid particulate feed material in a fluidized state, wherein the feed material is held in said fluidized state in a lower zone of the interior chamber. The feed material is supplied to the interior chamber through at least one outlet opening, and is discharged from the interior chamber through at least one outlet opening. The at least one outlet opening is in flow communication with the lower zone of the interior chamber. A gas supply means supplies a fluidizing gas to the lower zone of the interior chamber, and an outlet conduit in flow communication with the at least one outlet opening receives said feed material discharged from the interior chamber. | 05-19-2016 |
| 20160153062 | METHOD OF DETECTING ABNORMALITY AT BLAST FURNACE AND METHOD OF OPERATING BLAST FURNACE | 06-02-2016 |
