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Matches 1 - 50 out of 29,867

Document Document Title
WO/2018/068818A1
The invention relates to a drilling crown (11) for the drilling, more particularly the rotary-percussive drilling, of a hole, more particularly of a tap hole of a melting furnace. The drilling crown (11) has a drilling head (10) comprisi...  
WO/2018/058951A1
A vortex mixing method for smelting reduction of iron. The method comprises the following steps: (1) placing pig iron in an induction furnace, heating till melting to form molten iron, and ensuring that the temperature of the molten iron...  
WO/2018/056171A1
In this surface detection device for a blast furnace, an antenna is fixed to a side surface of a container that is attached to an opening part of a blast furnace and has a bottom surface that is open in correspondence with the opening pa...  
WO/2018/057025A1
A method for producing direct reduced iron having increased carbon content, comprising: providing a carbon monoxide-rich gas stream; and delivering the carbonmonoxide-rich gas stream to a direct reduction furnace and exposing partially o...  
WO/2018/054848A1
A Material hopper, in particular for a blast furnace, comprises a containing hollow shell (12) for storing material, the shell comprising an upper shell part (20) with an inlet portion () and an asymmetric funnel-shaped lower shell part ...  
WO/2018/046137A1
Hood for covering the upper side of the disc-shaped closing body of a closure of a bulk material lock against deposits of bulk material.  
WO/2018/043101A1
The present invention pertains to a method for producing coke for ironmaking, the coke having a representative strength of 2.5 MPa or higher, and the method including dry-distilling of raw material coal and a caking additive at a tempera...  
WO/2018/037957A1
The purpose of the present invention is to provide, as a furnace body protection stave to be set in the inner wall of the furnace body of a blast furnace, etc., a furnace body protection stave with which the probability of leakage of coo...  
WO/2018/033056A1
A blast furnace gas recycling system, comprising a dry-type bag-type dust collecting device (1), an organic Rankine cycle power generation device (2), a multistage compressor device (3) and a fuel gas-steam combined cycle power generatio...  
WO/2018/030585A1
Provided is an apparatus for removing a bird's nest in a blast furnace, which inserts a capsule containing a melting agent into the bird's nest accumulated in the core of the blast furnace so as to effectively remove the bird's nest and ...  
WO/2018/025585A1
Provided is a reduced iron production method with which recovery of highly pure metal iron at high efficiency and reduced load on crushing equipment are possible. Said method comprises: a reducing step for reducing iron oxide by heating ...  
WO/2018/024767A1
A method and apparatus for producing direct reduced iron, said method comprising producing direct reduced iron using a pre-treated make-up gas as a reducing agent in a direct reduced iron reactor (10), and wherein producing direct reduce...  
WO/2018/026054A1
The present invention relates to a molten iron manufacturing apparatus and a molten iron manufacturing method, and can provide a molten iron manufacturing apparatus and a molten iron manufacturing method, the apparatus comprising: a melt...  
WO/2018/026101A1
The present invention provides an apparatus for pressing cheek plates, which is provided in briquette manufacturing equipment and brings the cheek plates into close contact with rolls by pressurizing the cheek plates on the side surfaces...  
WO/2018/014364A1
Disclosed is a method for smelting reduction production and tempering of a titaniferous mixed slag, comprising the following steps: (1) adding a reduction agent, a vanadium-titanium-containing mineral and/or an iron-containing material t...  
WO/2018/014148A1
A multistage roasting-smelting method for reduction ironmaking and a full system apparatus set for closed energy circulation. The system apparatus comprises: a first stage reduction unit (1), a second stage reduction unit (2), a third st...  
WO/2018/014418A1
Disclosed is a method for mixed slag smelting reduction recycling and tempering. The method is carried out according to the following steps: (1) blast furnace slag and molten steel slag are mixed; (2) gas injection is carried out to carr...  
WO/2018/014363A1
Disclosed is a method for smelting reduction, recycling and tempering of a titaniferous mixed slag, comprising: (1) mixing titaniferous blast furnace slag with vanadium-titanium-containing molten steel slag to form a titaniferous mixed s...  
WO/2018/016719A1
Introduced is a stabilization treatment technique for slag generated in an ironmaking process. A nozzle spray angle and a fall distance (h) representing the distance until molten slag discharged from a slag pot (10) collides with a fluid...  
WO/2018/014419A1
Disclosed is a method for mixed slag smelting reduction production and tempering, comprising the following steps: 1) an iron-containing material and a reducing agent are added to the mixed slag of blast furnace slag and molten steel slag...  
WO/2018/014093A1
The present method includes initially removing sulphur, phosphorus and waste rock from ore and coal by magnetizing roasting with an alkaline additive and acid leaching. A mixture of crushed ore, coal and NaOH is heated to a temperature o...  
WO/2018/016292A1
Provided is a method for improving the iron grade of iron ore, said method enabling the improvement of the iron grade by efficiently removing gangue included in the iron ore and enabling the iron ore to have a form that is easily usable ...  
WO/2018/012287A1
Provided are a rotary hearth furnace (1) in which it is possible to adjust the position of the point at which exhaust gas diverges so as to be near the border between a heating section and a non-heating section while limiting the volume ...  
WO/2018/012003A1
Provided are a reduced iron production device (1) and a reduced iron production method with which it is possible to prevent a reduction reaction of an iron oxide by a reducing gas from being suppressed by a carburizing gas when the reduc...  
WO/2018/008339A1
The key feature of this method for refining low-rank coal is the feature of subjecting low-rank coal to a chemical reduction treatment. The key feature of this method for producing coke is the feature of producing refined coal using the ...  
WO/2018/004070A1
An apparatus for manufacturing molten iron and a method for manufacturing molten iron by using the same are provided. According to one embodiment of the present invention, the apparatus for manufacturing molten iron comprises: a melt gas...  
WO/2018/000858A1
A roller treatment process and a treatment device suitable for a total-amount steel slag treatment. The treatment process is: firstly, a slag tank (2) with the molten slag is tightly held by a slag tank tilting mechanism and moved to a s...  
WO/2018/000973A1
Provided are a metallurgical electric furnace and a smelting method used for said metallurgical electric furnace; the metallurgical electric furnace comprises a furnace body, an oxidation lance, and a coal lance, and the furnace body has...  
WO/2017/223562A1
A pneumatic drilling device comprising: an impact manifold or cylinder in fluid communication with a rotary air manifold or gear box; and a single air inlet. The single air inlet may be in fluid communication with the impact manifold or ...  
WO/2017/221118A1
Disclosed herein is internally refractory and insulation lined furnace with a reinforcement anchor assembly attached to the outer surface of the shell of the furnace. Also disclosed herein is a method of repairing a furnace refractory li...  
WO/2017/211956A1
The application relates to a method for the direct reduction of feedstock, containing metal-oxide to form metallic material, by contact with hot reduction gas in a reduction assembly (1), the product of the direct reduction process being...  
WO/2017/211939A1
The application relates to a method for the direct reduction of feedstock, containing metal-oxide, to form metallic material, by contact with hot reduction gas in a reduction assembly (1), the product of the direct reduction process bein...  
WO/2017/207472A1
A method for the production of cast iron starting from pre-reduced iron ore DRI by means of an electric arc furnace EAF, comprising the following steps: a. preparing a charge of pre-reduced iron ore DRI having a metallization higher than...  
WO/2017/202119A1
A reduction smelting system (10) and reduction smelting method for vanadium-titanium magnetite ore or ilmenite. The reduction smelting system (10) for vanadium-titanium magnetite ore or ilmenite comprises: a rotary kiln (101) used for pr...  
WO/2017/199868A1
Provided is a reduced iron production method which can provide good heat input to reduced iron starting materials on a hearth 18 in a reduction-melting furnace 10 and which can improve the efficiency of treatment thereof. The reduced iro...  
WO/2017/194708A1
Process and furnace plant for production of liquid metal. The furnace comprises an apparatus (1) for treatment of furnace gas. The apparatus comprises a wet scrubber, preferably a venturi scrubber (6), such as an air gap scrubber, with a...  
WO/2017/190185A1
A smelting vessel includes a plurality of heat pipes (21) positioned in a refractory lining of at least a part of the hearth (9) for cooling at least a part of the refractory lining. At least one of the heat pipes includes (a) a liquid p...  
WO/2017/185178A1
The present invention discloses a system and method for using a pressurized oxy-fired configuration to conduct metal reduction. The invention discloses a process for production of metal from metal oxide ore through reduction, comprising:...  
WO/2017/186782A1
The invention relates to a method for producing liquid pig iron (1), wherein the method comprises reducing iron-oxide-containing feed materials (2) to form a partially reduced first iron product (3) in a first reduction system (4), intro...  
WO/2017/187973A1
[Problem] To provide: a method for processing iron and steel dust, which is more advantageous than a Waelz method in terms of energy and economy; a method for producing zinc; and a method for producing a staring material for iron and ste...  
WO/2017/185858A1
A serial flash furnace, comprising an upper reaction body (5) and a lower reaction body (1), and a connecting channel (7) connecting the upper reaction body (5) and the lower reaction body (1). The upper reaction body (5) is located abov...  
WO/2017/186482A1
The invention relates to a method for producing syngas with a variable H2/CO ratio, comprising the following steps: splitting a hydrocarbon fluid, in particular a first gas with the composition CnHm to form carbon and hydrogen in a react...  
WO/2017/187824A1
A checker brick bracket (10) with a metal grille (20) for receiving the checker bricks of a hot blast stove (2) and existing posts (40) disposed between the metal grille (20) and the furnace bottom surface (21), wherein: the bracket comp...  
WO/2017/188344A1
The present invention addresses the problem, in methods for producing a metal or alloy by reducing a mixture that contains an oxide ore, of providing an oxide ore smelting method with good productivity and efficiency. The present inventi...  
WO/2017/174105A1
The invention relates to a nozzle for spraying an inorganic compound, having the following features: a flow channel (10) which extends from a first end (12) with a substantially circular cross-section to a second end (14) with a substant...  
WO/2017/170100A1
Provided is a method for operating a blast furnace with which it is possible to reduce the reduction agent ratio of the blast furnace. In this method for operating a blast furnace, pulverized coal is blown from a blast furnace tuyere. Th...  
WO/2017/169486A1
The problem addressed by the present invention is to improve efficiency when smelting or operating the melting and smelting furnace for a cold iron source using an oxygen burner lance. Provided is a melting and smelting furnace comprisin...  
WO/2017/164358A1
The present invention is formed by having an angle variable reflection plate installed at an opening section at one end thereof and an antenna installed at the other end thereof, and is provided with: a guide part inserted into a furnace...  
WO/2017/157092A1
A method for producing ferronickel by means of a high efficiency step forking type rotary reduction furnace in a direct reduction manner, comprising the steps of: sieving laterite nickel ore raw material, adding pulverized coal and an ad...  
WO/2017/159641A1
In a blast furnace operation that is performed by forming coke-mixed ore layers and coke layers in a blast furnace, the present invention ensures air permeability in the blast furnace, by appropriately controlling the amount of coke mixe...  

Matches 1 - 50 out of 29,867