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Dolomitic refractory materials (bricks and compounds) are produced from a dolomite sinter in a double-pass sintering process, which gives the refractory constant physical and chemical properties. This raw material is produced by Calcinor in their Bueras plant (Dolomitas del Norte), thereby achieving a vertical integration and closing the productive cycle of the value chain.
Get PriceDolomite Refractory Materials. a coarsegrained powder from crushed dolomite that has been fired to a sintered state and articles from such a powder, predominantly with resinous binding (unfired and fired). The sintered dolomite powder is used for patching the fettlings of openhearth and electric steel furnaces, and the dolomite products (including ...
Get Price2018-9-25 · Formed in Mg-Zr-Containing Refractory Dolomitic Materials 185 corrosion resistance under the work conditions in the cement kilns, developing hot points. In the beginning of the corrosion process the liquid phase of clinker penetrates inside the substrates through open porosity and grain boundaries.
Get Price2018-8-10 · The stocks of freshly sorted raw dolomite follow a long and complicated path to make a basic high-quality refractory like the KELSEN brick. As can be seen in the diagram (fig. 1), the process continues from collection through controlled burning to obtain the CaO and MgO oxides.
Get Price2016-11-1 · 1. Introduction. The dolomitic refractory is widely used for containment of steel melts during steelmaking and refining, especially in the production of special steels and clean steels , , , due to its excellent high temperature stability, slag erosion resistance and peeling resistance .Compared with MgO-C refractory, dolomitic refractory will not cause the increase of carbon in molten steel.
Get Price2015-3-1 · The application of dolomites as natural raw material emerges as an economically suitable alternative for the production of different kinds of refractory materials. The most important dolomite mineral resources in Argentine are located near cement plants in Olavarría District, in the centre of Buenos Aires Province.
Get Price2021-5-26 · Our dolomitic quicklime has the proper magnesium content to balance and protect your refractories. The calcium content of dolomitic lime is used in combination with high calcium lime as a fluxing agent to achieve proper slag chemistry and physical properties. Dolomitic quicklime is critical to producing quality steel and controlling your costs.
Get Price2021-5-27 · The most common basic refractories are Magnesite, Dolomite, lime etc. But lime, because of its dehydrating tendency is never used as a refractory.
Get Price2019-1-1 · Traditionally, metallurgical and dolomitic lime are added to increase MgO saturation of the slag in Electric Arc Furnaces (EAF) to reduce refractory attack. Replacement of dolomitic lime by spent MgO-C refractory has been shown to lead to higher MgO in slag and increased refractory lifetime (Conejo et al., 2006; Lule et al., 2005) provided that care is taken to determine the proper dosing (Luz et al., …
Get Price2014-7-11 · The choice of refractory and the advantage of dolomite over other types of materials have also been dealt with. The suitability of Indian raw materials namely—dolomite, dolomitic magnesite and magnesite as well as suitable methods of their calcination for use as …
Get Price2016-8-26 · refractory, dolomitic refractory will not cause the increase of carbon in molten steel. Besides, CaO in dolomitic refractory can purify the molten steel by removing inclusions from molten steel[5-7]. Based on the previous advantages, the dolomitic refractory plays …
Get Price2018-8-10 · Our raw material Dolomite: double calcium carbonate and magnesium CaMg(CO 3) 2 when theoretically pure, contains a stoichiometric ratio of calcium carbonates and magnesium: 45,7% MgCO 3 (21,85% MgO) and 54,3% CaCO 3 (30,4% CaO). Our dolomites are very close to these values because they do not have the undesirable impurities for brick manufacture such as melting oxides SiO 2, Al 2 …
Get Price2018-8-10 · Advantages od dolomitic linings DESULPHURISATION OF THE STEEL ... Of all refractory oxides, it is the one that possesses least oxidisation potential, and therefore leaches less oxygen into the steel that may react with other metal elements to produce non-metallic inclusions. ... COMPATIBILITY WITH OTHER RAW MATERIALS Sintered dolomite is ...
Get Price2021-5-26 · Our dolomitic quicklime has the proper magnesium content to balance and protect your refractories. The calcium content of dolomitic lime is used in combination with high calcium lime as a fluxing agent to achieve proper slag chemistry and physical properties. Dolomitic quicklime is critical to producing quality steel and controlling your costs.
Get PriceIn the current study, the wettability between molten slag and dolomitic refractory materials used in the ladle during steel refining was investigated. The contact angle between molten slag and dolomitic substrate decreased with increasing temperature. The slag with lower basicity spread on the substrate more easily and penetrated deeper into the substrate.
Get PriceMore specifically, the invention pertains to rebonded dolomitic refractories comprising coarse fused dolomitic (dolomite with or without excess MgO or CaO, or equivalent oxides) refractory grain bonded with a fine fraction of magnesite (used in the art and herein synonymously with magnesia, both terms meaning a material with periclase as the ...
Get PriceWhat is claimed is 1. An improvement in a process of producing hydration resistant, low flux dolomitic refractory material in which a dolomite containing at least 98 percent by weight of CaO and MgO is calcined to produce quicklime, the quicklime is slaked to partially hydrate the oxides, and the partially hydrated oxides are formed into a refractory shape and then sintered, the improvement ...
Get PriceThis paper discusses the current characteristics of the recycling of refractory materials for steel use and presents various successful experiences of recycling in steel companies of Europe, Asia, U.S.A., and Latin America. The steel industry consumes mostly magnesitic, dolomitic and …
Get PriceThe rock may be metamorphosed into dolomitic marble. Most dolomites probably originated from the partial replacement of the calcium in limestone by magnesium. Its chief uses are as a building stone, for the manufacture of refractory furnace linings, and as basic magnesium carbonate for pipe coverings.
Get Price2014-7-11 · The choice of refractory and the advantage of dolomite over other types of materials have also been dealt with. The suitability of Indian raw materials namely—dolomite, dolomitic magnesite and magnesite as well as suitable methods of their calcination for use as …
Get Price2021-5-26 · Our dolomitic quicklime has the proper magnesium content to balance and protect your refractories. The calcium content of dolomitic lime is used in combination with high calcium lime as a fluxing agent to achieve proper slag chemistry and physical properties. Dolomitic quicklime is critical to producing quality steel and controlling your costs.
Get PriceIn the current study, the wettability between molten slag and dolomitic refractory materials used in the ladle during steel refining was investigated. The contact angle between molten slag and dolomitic substrate decreased with increasing temperature. The slag with lower basicity spread on the substrate more easily and penetrated deeper into the substrate.
Get PriceMore specifically, the invention pertains to rebonded dolomitic refractories comprising coarse fused dolomitic (dolomite with or without excess MgO or CaO, or equivalent oxides) refractory grain bonded with a fine fraction of magnesite (used in the art and herein synonymously with magnesia, both terms meaning a material with periclase as the ...
Get PriceDolomitic products. Basic Refractory Raw Materials. The principal raw materials used in the production of basic refractories are dead-burned and fused magnesites, dead-burned dolomite, chrome ore, spinel and carbon. In recent years, the trend has shifted to developing highly engineered basic refractories. One result of this effort has been the ...
Get PriceIntegrated in ARRILLAGA GROUP (specialized in the production and distribution of refractory products and dolomitic lime), ARRILLAGA REFRACTORIES Limited Company has been providing their services for over 40 years.During all this time has marketed multiple refractory products according to the needs of each client. These products includes a wide range of refractory bricks ( with a big variety of ...
Get PriceChromite, added in amounts of 10% to dolomitic magnesite containing 8.35% CaO by bonding with it completely during firing, is an effective stabilizer. An increase in the chromite content of the batch of more than 10% lowers the quality of the refractory. The hydrothermal treatment of the calcined dolomitic magnesite with 10% chromite accelerates the process of hydrating the free CaO and ...
Get Price2021-5-26 · In BOP steelmaking, molten iron from a blast furnace is charged into a refractory-lined furnace, and then oxygen is injected into molten iron at high speeds, resulting in oxidation of carbon and impurities. High calcium and dolomitic lime is used in several steps throughout this process and results in several enhancements and benefits.
Get Price2007-6-7 · This article describes the preparation of MgAl 2 O 4 spinel-containing refractory cement by solid state reaction, using appropriate mixtures of active alumina (99.5%) and a dolomitic material (MgO 17.83% and CaO 29.60%) proceeding from Olavarría, in the centre of Buenos Aires Province (Argentine). The starting materials were fully ...
Get PriceNowadays, huge amounts of refractory materials are generated around the world. The majority of them lack valorization methods. This study analyzes the ability of a doloma and two magnesia spent refractory wastes as soil stabilizers on their own, as well as when combined with Ground-Granulated Blast Furnace Slags (GGBS). These materials showed a limited ability for the soil’s plasticity ...
Get Price2021-5-17 · Dolomite is a carbonate mineral composed of calcium magnesium carbonate CaMg(CO3)2. It is a common sedimentary rock-forming mineral that can be found in massive beds several hundred feet thick.Dolomite is used as an ornamental stone, a concrete aggregate and as source of magnesium oxide.
Get Price2019-3-21 · Macroram Ramming Products. These monolithics are manufactured with selected magnesia, dolomite, bauxite, alumina and proprietary binders. They are supplied in a semi-dry state and are installed with pneumatic rammers to achieve the optimum density.
Get PriceDefine dolomitic. dolomitic synonyms, dolomitic pronunciation, dolomitic translation, English dictionary definition of dolomitic. n. 1. A white or light-colored mineral, essentially CaMg 2, used in fertilizer, as a furnace refractory, and as a construction and ceramic material. ... Dolomite Refractory Materials; Dolomite rock; Dolomite rock ...
Get Price2021-5-21 · Dolofrit ® are high density refractory materials manufactured from dead-burnt dolime, enriched with iron oxide to aid rapid sintering and to be self-compacting. Doloram ® is a product portfolio of ramming materials with high packing density for iron and steelmaking vessels.
Get PriceIntegrated in ARRILLAGA GROUP (specialized in the production and distribution of refractory products and dolomitic lime), ARRILLAGA REFRACTORIES Limited Company has been providing their services for over 40 years.During all this time has marketed multiple refractory products according to the needs of each client. These products includes a wide range of refractory bricks ( with a big variety of ...
Get Price2021-3-5 · SRM 88b - Dolomitic Limestone. This Standard Reference Material (SRM) is intended for use in the analysis of rocks, ores, minerals, and materials of similar matrix. SRM 88b is a powdered limestone that was passed through a sieve with a nominal opening of 250 µm (No. 60). Limestone is a rnajor industrial raw material for the cement and refractory
Get PriceFor the quick maintenance of the slag zone of electric arc furnaces with magnesitic or dolomitic materials. They are optionally available as wet centrifugal machine NS or for spot repair type PS and can either be equipped with compressed air or electric motor. Usual vessel sizes are 1,0/1,5/2,0/2,5 m³.
Get PriceContractors and suppliers of all types of refractory materials, castables, IFB, conventional and exotic firebrick, gunite and plastic rams. Master distributors and installers of Unifrax Fiberfrax ceramic fiber products. Inventory a complete line of both Fiberfrax ceramic fiber and refractory products.
Get PriceRefractory Manufacturer Resco Products, Inc. is a full line global refractory manufacturer supported by unparalleled refractory applications expertise and value-added refractory solutions. A privately-owned company headquartered in Pittsburgh, PA, Resco serves major industries such as steel, copper, nickel, aluminum, hydrocarbon processing ...
Get Price2016-3-4 · Some flux materials are added to repair smelting and refining vessel refractory linings. The selection of the flux to be added depends on the type of process and type of refractory. In the basic oxygen process for steel, lime from the flux combines with silica formed by oxidation of silicon from the metal to form a slag. The
Get Price2021-5-17 · Dolomite is a carbonate mineral composed of calcium magnesium carbonate CaMg(CO3)2. It is a common sedimentary rock-forming mineral that can be found in massive beds several hundred feet thick.Dolomite is used as an ornamental stone, a concrete aggregate and as source of magnesium oxide.
Get Price2014-12-23 · Burnt dolomite is a refractory material and is used in the manufacture of basic refractories. Various uses of lime and dolomitic lime in the steel plant include its use in the production of basic sinter, as a desulphurizing agent, as a slag forming material to remove impurities in basic oxygen furnace (BOF) and in electric arc furnace (EAF), in ...
Get PriceDolomite is used for manufacturing certain types of refractory bricks used in steel making. The dolomite is heated to a high temperature to drive off the carbonate as carbon dioxide and the remaining material, a mixture of calcium and magnesium oxides, is blended with carbon and other materials and pressed into blocks for the furnaces.
Get PricePericlase, magnesite, and dolomitic lime. Specialty basic refractories for maintaining basic oxygen, electric arc, open hearth steelmaking furnaces and specialized gunning equipment. Imaging and measuring laser system to measure refractory wear in vessels. Specialty alumina refractories: gunnables, rammables, castables and precast shapes.
Get PriceContractors and suppliers of all types of refractory materials, castables, IFB, conventional and exotic firebrick, gunite and plastic rams. Master distributors and installers of Unifrax Fiberfrax ceramic fiber products. Inventory a complete line of both Fiberfrax ceramic fiber and refractory products.
Get PriceRefractory Manufacturer Resco Products, Inc. is a full line global refractory manufacturer supported by unparalleled refractory applications expertise and value-added refractory solutions. A privately-owned company headquartered in Pittsburgh, PA, Resco serves major industries such as steel, copper, nickel, aluminum, hydrocarbon processing ...
Get Price2018-2-28 · The Refractories Division is comprised of six operating companies producing basic silica-aluminum, high alumina and dolomitic refractory materials and ceramic fibers. It also provides installation services for anti-acid linings and refractory materials and chimney construction.
Get PriceUS2287455A US360745A US36074540A US2287455A US 2287455 A US2287455 A US 2287455A US 360745 A US360745 A US 360745A US 36074540 A US36074540 A US 36074540A US 2287455 A US2287455 A US 2287455A Authority US United States Prior art keywords calcium refractory lime silica orthosilicate Prior art date 1940-10-11 Legal status (The legal status is an assumption and is not a …
Get PriceBauxite Consists Mostly Of The Aluminium Minerals. Bauxite Appears Dull In Luster And Is Reddish-Brown, White, Or Tan In Color. Bauxite Is Aluminium-Rich Ore That Is Used For Aluminium Production (The Metallurgical Bauxites) And For Production Of Refractory Materials, Chemicals Or Cements (The Non-Metallurgical […] View details
Get Price2021-1-19 · He was born to Edna Lloyd Giese and Rossman Frederick Giese, Sr., on January 7, 1936, as the only son of an only son in the Bronx, New York. Besides his wife, Dr. Patricia Costanzo, Dr. Giese is survived by two sons, David and Andrew Giese, by Dr. Costanzo's daughters, Rebecca Costanzo, Jennifer Marie, and Mary Elizabeth Vogt; and by 10 grandchildren and eight great-grandchildren.
Get PriceThis paper discusses the current characteristics of the recycling of refractory materials for steel use and presents various successful experiences of recycling in steel companies of Europe, Asia, U.S.A., and Latin America. The steel industry consumes mostly magnesitic, dolomitic and …
Get Price2020-2-24 · Sintered dolomite finds utilization in the iron & steel industry for manufacturing refractory raw materials such as bricks and LD converter lining. The mineral would generate around 70% total return to stakeholders throughout the foreseeable timeframe. On the other hand, calcined dolomite is utilized as a fluxing material in iron production for ...
Get Price2014-12-23 · Burnt dolomite is a refractory material and is used in the manufacture of basic refractories. Various uses of lime and dolomitic lime in the steel plant include its use in the production of basic sinter, as a desulphurizing agent, as a slag forming material to remove impurities in basic oxygen furnace (BOF) and in electric arc furnace (EAF), in ...
Get PriceNotes. Dolomite as a ceramic material is a uniform calcium magnesium carbonate. In ceramic glazes it is used as a source of magnesia and calcia. Other than talc, dolomite is the principle source of MgO in high temperature raw glazes. 'Dolomite matte' stoneware glazes, for example, are highly prized for their pleasant 'silky' surface texture. Dolomite by itself is refractory, but when combined ...
Get PriceDolomitic lime products are used as components in refractory materials and as an ingredient in the melt to reduce the damage to the refractory lining during the steelmaking process. Safe handling The Safe Handling of Lime document ( available here ) gives some general guidelines on the handling requirements for lime products.
Get PriceThe dolomite is the main mineral components of dolomite and dolomitic limestone. Dolomite can be used for building materials, ceramics, glass and refractory materials, chemicals and agriculture, environmental protection, energy conservation and other fields. Read more
Get PriceHARBISON-WALKER Handbook of Refractory Practice Harbison-Walker Refractories Company 400 Fairway Drive Moon Township, PA 15108
Get Price2019-9-13 · – Brian Rand and O. Serdar Ozgen, “Kinetics of Oxidation of the Graphite Phase in Alumina/Graphite Materials,” Brit Ceram Trans J, Vol. 84, No. 2, pp. 70-76, 1985. 1985 – Wate T. Bakker, Ulrich Gerhardus, Sherman Greenberg, and Meinholf Trondt, “Refractory Practice in …
Get PriceHigh quality Basic Slag Resistance Magnesia Refractory Bricks For Side - Blowing Oxygen - Blowing Converter from China, China's leading magnesite chrome brick product, with strict quality control insulating refractory brick factories, producing high quality insulating refractory brick products.
Get Price2016-3-4 · Some flux materials are added to repair smelting and refining vessel refractory linings. The selection of the flux to be added depends on the type of process and type of refractory. In the basic oxygen process for steel, lime from the flux combines with silica formed by oxidation of silicon from the metal to form a slag. The
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