Our refractory bricks for iron ore reduction reactors patent

Blast Furnace Iron Making, IIT,KGP, Oct 26, 2010 | Blast ...


Oct 26, 2010· Blast Furnace Iron Making, IIT,KGP, Oct 26, 2010. For Later. save. Related. Info. Embed. Share. Print. ... The hot flue gas heats up the bricks. which consist of refractory bricks arranged as a checker work. . a minimum of 3 stoves are required – one on cooling and two on heating. ... Reaction kinetics of iron ore reduction ...

UDC 666 . 7 Historical Overview of Refractory Technology ...


Historical Overview of Refractory Technology in the Steel Industry Kiyoshi SUGITA* Abstract ... iron was produced by reducing iron ore using charcoal in a furnace. ... Diatomaceous brick was developed (UK patent in 1893) as the

blast furnace slag for pelletisation of iron ore


It consists of non-ferrous components contained in the iron ore together with limestone as an auxiliary materials and ash from coke. ... The blast furnace is a counter-current gas/solids reactor in which the descending column of burden materials [coke, iron ore and fluxes/additives] reacts with the ascending hot gases. ... the reduction of the ...

upgrading low grade iron rich chrome ores


Jan 01, 2018· Mechanism of sodium chloride in promoting reduction of high . ... refractory industry as bricks used in iron & steel, glass, cement and. Contact Us. Beneficiation of Low Grade Chromite Ore and Its - waset. ... US3337328A - Iron ore beneficiation process - Google Patents.

PROCESS FOR THE REDUCTION, IN LIQUID PHASE, OF IRON ORE …


Sep 03, 1974· PROCESS FOR THE REDUCTION, IN LIQUID PHASE, OF IRON ORE IN A ROTARY KILN ... The present invention covers a process for the reduction, in liquid phase, of material containing iron in an oxidized state, in a rotary vessel. ... internally lined with refractory material is used as a reactor with the following internal dimensions D = 400 ...

Jorge Domingo Berrun-Castanon Inventions, Patents and ...


Abstract: Refractory materials (typically refractory bricks) having the exposed working surface treated to form a silica sand glazed surface for their utilization in iron ore reduction reactors, for example of the moving bed type, fluidized bed type, rotary kilns, or the like, and method and apparatus for treating refractory bricks before ...

Refractory Lining | Steel Industry | Jobs: A Review on ...


A patent [T.G. McDongal, A.H. Fessler, and K. Schwartzwalder, U.S. Pat. 2218584, Oct. 22, 1940; Ceram. ... Chrome (Al-Chrome) refractories from service in coal gasifier, fiber glass tank and carbon reactors. Chrome - Silica (Cr 2 O 3 - SiO ... There is no limit to which a refractory brick can have different shapes and sizes to suit a particula...

Patents by Inventor Marco Aurelio Flores-Verdugo


Patents by Inventor Marco Aurelio Flores-Verdugo Marco Aurelio Flores-Verdugo has filed for patents to protect the following inventions. ... Refractory bricks for iron ore reduction reactors. ... having the exposed working surface treated to form a silica sand glazed surface for their utilization in iron ore reduction reactors, for example of ...

cold bonded self reducing bricks as blast furnace feed


Normally used for iron ore dust collected from the blast furnaces. .... A pear-shaped furnace, lined with refractory bricks, that refines molten iron ... Cold-reduced sheet steel, 12 inches to 32 inches wide, that serves as the ..... with bonding clay and roasted into hard round balls for blast furnace feed. ... Patent US8257486 - Composition ...

PREREDUCED IRON-ORE PELLETS STATE OF THE ART


a rotary kiln is used for simultaneous induration and reduction of iron-ore pellets. the product was of little or no concern. With the ... The process appears to be based on US Patent 2,793,-109, filed April 1954 and granted 1957"°. ... of which is lined with insulating refractory brick and the inner with stainless steel only. The pellets

STATE OF THE DIRECT REDUCTION AND REDUCTION …


State of direct reduction and reduction smelting processes J. Min. Met. 38 (3 ‡ 4) B (2002) 129 Figure 3. Schematic Review of MIDREX PROCESS [2] ore or iron oxide pellet solids in the bed, Figure 3. The reducing gas (from 10-20% CO and 80-90% H2) is …

Rotary kiln - Wikipedia


A rotary kiln is a pyroprocessing device used to raise materials to a high temperature ... It may consist of refractory bricks or cast refractory concrete, or may be absent in zones of the kiln that are below approximately 250 °C. ... Preferred iron content of ore (% Fe) 30-60 30-60 55-63 25-45 50-67 Size of ore feed (mm) < 20 < 20 < 10 5-25

Electric Smelting Furnace of Ore


A furnace proposed for reducing native copper concentrate would have a smelting chamber lined with refractory brick, three carbon electrodes suspended vertically through the roof, and a charging stack lined with firebrick over the crucible. ... Lyon and Keeney also gave considerable attention to the reduction of iron, ore and the melting of ...

refractories for direct reduction iron kiln


The direct reduction of iron ore DRI is an alternative to the blast furnace process in order to produce pig iron out of iron ore. ... MODELING OF REFRACTORY BRICK FURNITURE IN ROTARY KILN . ... Up to now, with 500 mine EPC projects, 70 kinds of ores mining technologies and experience and 20 patents, Xinhai has established overseas offices in ...

plasma arc smelter for gold in the us - iron ore mining


… with a commercial plant established in the United States in 1907. … molten bath (gold), tapping spout at left, refractory brick … A plasma arc furnace (PAF) uses … industrial smelting arc furnace plant or equipment for sale …

United States Patent (19) 4,226,830 Davis Oct. 7, 1980


United States Patent (19) Davis 54 (75) (73) FLUIDZED BED REACTOR ... tion, reforming, gasification, reduction, drying and cal cination reactions. 16 Claims, 9 Drawing Figures ... ized bed reactors derives from their simplicity in design, concept and operation. Although external mechanical

Refractory Systems | Iron and steel industry


Innovative refractory concepts for direct reduction STEULER-KCH IRON & STEEL 4. ... the iron ore and gas circulation. Due to these ... bricks and refractory wear layer. 7 IRON & STEEL STEULER-KCH. Steuler Técnica S.L. Spain Steuler France S.A.R.L. France Ditescor S.A. de C.V.

MEANS FOR TREATING ORES OR FOR EXTRACTING METALS patent ...


MEANS FOR TREATING ORES OR FOR EXTRACTING METALS: 46: ... crushed and sized ore) that is composed of at least a first group of particles and a second group of particles. Group members have similar chemical composition, while particles belonging to different groups have dissimilar chemical compositions. ... CERAMIC REFRACTORY STOPPER - The ...

Refractory bricks for iron ore reduction reactors - Hylsa SA.


Oct 09, 1996· Refractory bricks for iron ore reduction reactors ... It is an object of the present invention to provide direct reduction reactors lined with refractory material, such as refratory bricks, treated to minimize the adhesion of iron particles to the walls thereof; as well as to use such a reactor in the reduction of iron ore to sponge ...

Development of iron layers on the internal wall of ...


Development of iron layers on the internal wall of reduction reactors. ... which are the important variables and interactions that are responsible for the formation and growth of layers over the refractory brick on the wall of a DRI reactor. ... In the iron ore reduction process just some of those mechanisms take place.

Refractory Terms - Total Refractory Management


Reactors often are lined with refractory materials to increase insulation, prevent corrosion and protect the outer shell from the chemicals mixed in the reactor. Reformers Reforming is the technique in which the molecular structure of a hydrocarbon is rearranged to change the properties of the hydrocarbon.

Indian Patents. 207723:"A PROCESS FOR DIRECT SMELTING ...


"A PROCESS FOR DIRECT SMELTING METALLIFEROUS FEED MATERIAL" ... to air-based direct smelting processes where there is usually more off-gas than is required for heating/reducing iron ore in the pre-reduction vessel 103 and splitting the off-gas does not adversely affect the operation of the pre-reduction vessel 103. ... bricks of refractory ...

Production of Pig Iron by Using the Romelt Process – Arab ...


There are many technologies that use the method of reduction of iron ore during the smelting process (SR): 1.Corex, 2. Romelt, 3. DIOS, 4. HIsmelt,5. Ausmelt (AusIron), 6. ... They are getting the first patent in Russia in 1979. ... are lined with refractory bricks. In this zone the refractory lining is under favorable conditions: at the ...

US5766542A - Refractory bricks for iron ore reduction ...


Refractory materials (typically refractory bricks) having the exposed working surface treated to form a silica sand glazed surface for their utilization in iron ore reduction reactors, for example of the moving bed type, fluidized bed type, rotary kilns, or the like, and method and apparatus for treating refractory bricks before installation as ...

pressure oxide technology to process refractory gold ore


Perforated Brick Wholesale, Brick Suppliers. Cleaning Color Shade Iron Oxide Brown 686 for Perforated Brick. Add to Compare Changsha Jing Feng New High-Tech Building Materials. Get Price Vacuum Glas, Vacuum Glas Suppliers and Manufacturers pressure oxide technology to process refractory gold ore

iron ore direct reduction in cupol


iron ore direct reduction in cupol offers 71 sponge iron melting furnace products. ... 1400C Laboratory Tube Furnace with Silicon Carbide (SiC) as Heating Elements .... Professional Customized Pusher Type Reduction Furnace(Patent No. Chat Online. Reducing Flexible Coupling ... Zero thermal expansion silica brick is also known as fused-quartz ...

Celebrating an Epic Ceramic and Refractories Milestone ...


Celebrating an Epic Ceramic and Refractories Milestone ... the chief factors leading to the formation of TAMCO was Thompson's interest in the large and high-grade titaniferous iron ore deposits near the headwaters of the Hudson River in the Adirondack Mountains. ... and fired at 2,900°F in an oxidizing atmosphere. At that time, Seaboard ...

producers who use iron ore pelletizing kiln


Degradation of Refractory Bricks Used as Thermal Insulation in ... Nov 5, 2008 ... Degradation of bricks in an iron ore pellet producing kiln has been ... Thus, a wear mechanism is proposed in the kiln using these bricks that... Chat Online

United States Patent (19) 11) 4,228,314


United States Patent (19) Stenkvist 11) 4,228,314 45) Oct. 14, 1980 ... ing a layer of refractory bricks, such as silica or magne site bricks, and above which a layer of quartzite, dolo ... reduction of iron oxides, usually in the form of pow dered iron ore, possibly prereduced to some extent, and ...

Method of providing fuel for an iron making ... - patents.com


Method of providing fuel for an iron making process Abstract. ... No. 4,853,034, and the refractory brick of the ladle itself, to desulfurize molten iron contained in said ladle. ... After the iron ore reduction, medium Btu top gas from the reduction furnace is scrubbed and exported as the energy source for power generation at a heating value ...

Direct reduction : a review of commercial processes


The charge fed to the reduction reactor is an iron oxide containing material. ... SECTION 2 DIRECT REDUCTION PROCESSES Introduction More than 1200 patents have been issued covering various aspects of proposed direct reduction processes. ... "Development of the Hockin Process and Its Application to the Direct Reduction of Iron Ore", Inst. Min ...

Simulation of iron ore reduction in a fixed bed - ResearchGate


Refractory bricks based on mullite and corundum, commonly used in rotary kilns for iron ore pellet production, and deposit material from an iron ore pellet production kiln, were used in laboratory ...

Blast Furnace | Blast Furnace | Pig Iron


The blast furnace is the biggest chemical reactor. Blast furnaces are also called high ovens. A blast furnace is usually ... the events of its coming in contact with the iron ore,reduction (this reduction is called indirect reduction) of iron ore takes ... improve the wear resistance of blast furnace refractory bricks. In the 20th century, the ...


Top