Patent application number | Description | Published |
20110074071 | COOLING PLATE ARRANGEMENT AND METHOD FOR INSTALLING COOLING PLATES IN A METALLURGICAL FURNANCE - The present invention proposes a gap-filler insert ( | 03-31-2011 |
20110104513 | COOLING PLATE FOR A METALLURGICAL FURNACE - A cooling plate ( | 05-05-2011 |
20110253017 | BUSTLE PIPE ARRANGEMENT - The present invention proposes a bustle pipe arrangement ( | 10-20-2011 |
20110272868 | BUSTLE PIPE ARRANGEMENT - The present invention proposes a bustle pipe arrangement ( | 11-10-2011 |
20110282494 | COMPUTER SYSTEM AND METHOD FOR CONTROLLING CHARGING OF A BLAST FURNACE BY MEANS OF A USER INTERFACE - The invention relates to computer-implemented charging of a blast furnace equipped with an automated to charging installation and stockhouse for batchwise charging. It proposes: obtaining a nominal charge dataset reflecting a nominal blast furnace charge and comprising plural charge material records, each charge material record comprising a material type and an associated nominal charge quantity; generating a graphical user interface comprising batch data fields for entering and displaying plural batch datasets for pre-configuring batches, each batch dataset comprising at least one batching record, each batching record comprising a material type and an associated batching proportion. According to the invention, the batching proportion associated to a material type in a batching record is used for predefining a ratio between the material quantity that is to be contained in a batch and the nominal charge quantity. Further according to the invention, the method comprises computing, for the respective material type of each batching record, based on the batching proportion and the nominal charge quantity associated to the respective material type, an associated batching quantity which the stockhouse is to provide in a batch as pre-configured by the batch dataset. | 11-17-2011 |
20110311346 | METHOD AND SYSTEM FOR ADJUSTING THE FLOW RATE OF CHARGE MATERIAL IN A CHARGING PROCESS OF A SHAFT FURNACE - In a charging process of a shaft furnace, in particular of a blast furnace, batches of charge material are typically discharged in cyclical sequence into the furnace from a top hopper using a flow control valve. A method and system is proposed for adjusting the flow rate of charge material in such a process. According to the invention, a respective set of plural valve settings is stored for each batch, each valve setting of a set being associated to a different stage in the discharge of the batch. The method and system are configured to discharge a given batch so that, at each stage in the discharge of the given batch, the flow control valve operates at a constant valve opening according to the valve setting associated to that stage and so that an actual average flow rate at which charge material is discharged is determined for that stage. Further according to the invention, the method and system are configured to correct the plural valve settings offline and in function of the actual average flow rate determined for the associated stage. | 12-22-2011 |
20110311926 | METHOD AND SYSTEM FOR ADJUSTING THE FLOW RATE OF CHARGE MATERIAL IN A CHARGING PROCESS OF A SHAFT FURNACE - In a charging process of a shaft furnace, in particular of a blast furnace, batches of charge material are typically discharged in cyclical sequence into the furnace from a top hopper using a flow control valve. A method and system is proposed for adjusting the flow rate of charge material in such a process. Pre-determined valve characteristics for certain types of material are provided, each indicating the relation between flow rate and valve setting for one type of material. According to the invention, a specific valve characteristic is stored for each batch of charge material, each specific valve characteristic being bijectively associated to one batch and indicating the relation between flow rate and valve setting of the flow control valve specifically for the associated batch. In relation to discharging a given batch of the sequence the invention proposes: using the stored specific valve characteristic associated to the given batch for determining a requested valve setting corresponding to a flow rate setpoint and using the requested valve setting to operate the flow control valve; determining an actual average flow rate for the discharge of the given batch; correcting the stored specific valve characteristic associated to the given batch in case of a stipulated deviation between the flow rate setpoint and the actual average flow rate. | 12-22-2011 |
20130061786 | TUYERE STOCK ARRANGEMENT OF A BLAST FURNACE - Tuyere stock arrangement of a blast furnace including a tuyere body configured for installation in a shaft furnace wall, the tuyere body including a front face facing an interior of the shaft furnace and an opposite rear face, a tuyere channel extending from the rear face to the front face the tuyere stock arrangement further including a blowpipe connected between the rear face of the tuyere body and a hot blast air supply system, the blowpipe having a front portion connecting to the tuyere body and an opposite rear portion connecting to the hot blast air supply system where a fuel injection lance is provided for feeding fuel into the shaft furnace and a gas injection lance is provided for feeding an oxidizing gas to the shaft furnace, the fuel injection lance being arranged through the tuyere body and according to an important aspect of the invention, the gas injection lance is arranged in the rear portion of the blowpipe, the gas injection lance being arranged in such a way as to feed the oxidizing gas into a central portion of a stream of hot blast air fed through the blowpipe. | 03-14-2013 |
20130316295 | STAVE COOLER FOR A METALLURGICAL FURNACE - A stave cooler for a metallurgical furnace, in particular for a blast furnace, including a panel-like body having a front face for facing the interior of the metallurgical furnace and an opposite rear face; and at least one internal coolant passage arranged within the panel-like body, where the at least one shaft, protrudes from the front face of the panel-like body. | 11-28-2013 |
20140112738 | DOOR AND VALVE ASSEMBLY FOR A CHARGING INSTALLATION OF A SHAFT FURNACE - A hatch and valve arrangement for a charging installation for a shaft furnace, such as a blast furnace, said arrangement comprising a housing ( | 04-24-2014 |
20140166116 | CHARGING DEVICE FOR SHAFT FURNACE WITH CONTROLLER FOR CLEAN GAS FED TO ITS MAIN CASING - A charging device for a shaft furnace comprises a main casing and at least one nozzle for introducing a clean gas into the casing. According to an important aspect of the invention, a controller is configured to adapt the supply (the flow rate) or pressure of clean gas in the main casing based on charging status information. | 06-19-2014 |
20150021837 | SYSTEM OF LEAKTIGHT CONNECTION BETWEEN A TUYERE AND A HOT BLAST INLET NOZZLE FOR A SHAFT FURNACE, AND STEEL-MAKING BLAST FURNACE COMPRISING SUCH A SYSTEM - The sealed connection system between a tuyere of a shaft furnace, such as a steelmaking blast furnace, and an air blast pipe, in which a tip of the blast pipe is pressed towards a rear end of the tuyere, being centred thereon while still retaining freedom of pivoting movement relative thereto, including an added annular blast pipe seat, placed between the tip of the blast pipe and tuyere and immobile relative to the tuyere, the blast pipe tip resting against a rear face of the seat and an immobile gasket being placed between the seat and the tuyere such that the seat rests in sealed manner against a rear face of the tuyere, and a sleeve arranged around the contact zone between the blast pipe tip and the seat, is connected in sealed manner to the seat and to the blast pipe. | 01-22-2015 |