recycling of blast furnace slag

recycling of blast furnace slag

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  • FACT SHEET Steel industry co

    the blast furnace BF followed by steelmaking in the basic oxygen furnace BOF , and ironmaking via direct reduction DRI followed by steelmaking in the electric arc furnace EAF 2 Scrap-based steel accounts for about 30 of global steel production It is produced by recycling steel in an EAF The main inputs are recycled steel and ....

  • Ground granulated blast

    Ground-granulated blast-furnace slag GGBS or GGBFS is obtained by quenching molten iron slag a by-product of iron and steel-making from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder...

  • Blast Furnace Slag National Slag Association

    Blast Furnace Slag is formed when iron ore or iron pellets, coke and a flux either limestone or dolomite are melted together in a blast furnaceWhen the metallurgical smelting process is complete, the lime in the flux has been chemically combined with the aluminates and silicates of the ore and coke ash to form a non-metallic product called blast furnace slag...

  • RECYCLING OF STEELMAKING SLAG

    RECYCLING OF LD-SLAG The phosphorus content of the blast furnace usually ranges from 01 to 03 depending upon the type of burden used, whereas the bulk of quality steels must have phosphorus level below 002 Table 8 shows the effect of recycling of dephosphorised slag on the phosphorus values of hot metal...

  • Blast Furnace plants by Primetals Technologies

    Primetals Technologies has provided blast furnace engineering, project excellence and expertise to customers world-wide for over a century Our technology base covers the entire blast furnace process route from hot blast and raw material handling, through the furnace and casthouse, to gas cleaning and hot metal / slag processing...

  • Ground Granulated Blast Furnace Slag GGBS Chemical ,

    May 09, 2018 0183 32 Ground Granulated Blast Furnace Slag GGBS The importance of Ground Granulated Blast Furnace Slag GGBS lies in its greener way to become a substitute in concrete material GGBS being a waste material, it needs proper method for disposal So incorporating this waste material in concrete can reduce the depletion of conventional concrete components such as cement, fine ,...

  • Common Uses for Slag National Slag Association

    Electric Arc Furnace Slag EAF or steel furnace slag Produced when scrap metal and fluxes are oxidized by the use of an electric current Molten slag is generally placed into ground bays for cooling Both BOF and EAF slags are somewhat heavier than Blast Furnace Slag and most quarried rock material Uses include...

  • The Extraction of Iron

    The calcium silicate melts and runs down through the furnace to form a layer on top of the molten iron It can be tapped off from time to time as slag Slag is used in road making and as slag cement - a final ground slag which can be used in cement, often mixed with Portland cement...

  • Ground granulated blast

    Ground-granulated blast-furnace slag GGBS or GGBFS is obtained by quenching molten iron slag a by-product of iron and steel-making from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder Contents...

  • Advances in slag recycling and reuse

    In the past, slag was taken from the blast furnace, basic oxygen furnace BOF , and electric arc furnace EAF and hauled off to a hazardous dump site where millions of tons have accumulated The major waste by product from steel production is slag at 7915 as shown in 1...

  • Ground Granulated Blast Furnace GGBF Slag Used in ,

    Blast furnace slag is nonreactive in a high alkali environment, such as concrete and soils Blast furnace slag concrete can be reliably pumped when the slag is supplied to the ready-mix production in a saturated condition Use of the cementatious properties of ground granulated blast furnace GGBF slag was reported as early as 1774 GGBF slag ....

  • Recycling of ladle furnace slags

    Recycling of ladle furnace slags Abstract Ferrous industry slag is waste product of all steelmaking manufactur These materials should be reused or stocked There is abundant literature on the subject of reuse and recycling of blast furnace BF , basic oxygen furnace BOF , electric arc furnace EAF...

  • Blast Furnace Slag Cement

    Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70 to that of cement Ground granulated blast furnace slag cement GGBFS is a fine glassy granules which contain cementatious properti...

  • Blast Furnace Slag Concrete Benefits

    Recycling of CoarseRecycling of Coarse Screen MaterialScreen Material and Closedand Closed--System Efficiency , Slag 35-45 30-40 10-20 Silica Fume 8585 9797 GGBFS in HK 1992 , Blast Furnace Slag Concrete Benefits ....

  • What is Slag Cement

    Slag cement is a hydraulic cement formed when granulated blast furnace slag GGBFS is ground to suitable fineness and is used to replace a portion of portland cement It is a recovered industrial by-product of an iron blast furnace Molten slag diverted from the iron blast furnace is rapidly chilled, producing glassy granules that yield ....

  • Recycling of industrial waste and performance of steel ,

    Recycling of industrial waste and performance of , powder and blast-furnace slag powder are mixed into concrete In addition, about 50 decrease in expansion rate of mortar bars with...

  • RECYCLING OF STEELMAKING SLAG

    The steelmaking slag containing high phosphorus 1-3 P 2 O 5 is not possible to be used in blast furnace, as all the phosphorus will report to iron increasing the refining load in steelmaking...

  • Dry Granulation of Blast Furnace Slag

    Liquid slag produced in a blast furnace BF is at a temperature of around 1500?C and has a sensible heat of around 400Mcal/ton BF slag is rich in CaO, SiO2, Al2O3, and MgO which are similar to the components of Portland cement When this liquid BF slag is cooled fast enough then the solidified slag has a large percentage of glassy phase with high cementations activity and hence it can be used ....

  • Blast Furnace Slag

    Blast Furnace Slag - Material Description ORIGIN In the production of iron, iron ore, iron scrap, and fluxes limestone and/or dolomite are charged into a blast furnace along with coke for fuel The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product...

  • RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

    Blast furnace flue dust contains valuable amounts of carbon and iron The contents of harmful trap elements are low enough for recycling into the blast furnace Since 1993, SSAB Tunnpl 229 t in Lule 229 has recycled the flue dust by charging it into the blast furnace in the form of a cold-bonded dust briquette...

  • Upgrading of Blast Furnace Sludge and Recycling of the Low ,

    Depending on the operation of the blast furnace BF , the main outlet of zinc from the furnace is more or less via the BF dust and sludge , Upgrading of Blast Furnace Sludge and Recycling of the Low-Zinc Fraction via Cold-bonded Briquett Authors , By maintaining a constant hot metal production and slag basicity in the calculations, the ....

  • Granulated Blast Furnace Slag

    2 a Classification of the Chemical Granulated Blast Furnace Slag is considered a hazardous material according to the criteria specified in REACH REGULATION EC No 1907/2006 and CLP REGULATION EC No 1272/2008 and OSHA 29 CFR 19101200 Hazard Communication Standard...

  • RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC ,

    RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC FURNACE Ľ MIHOK1, KSEILEROVÁ , DBARICOVÁ Technical University, Faculty of Metallurgy, Letná 9, Košice, Slovakia SUMMARY The paper presents results of research of demetallized EAF slag recycling into charge of electric arc furnace Effects of recycling on steelmaking process parameters....

  • ITP Steel Recycling and Reuse of Basic Oxygen Furnace ,

    year, including six million tons of BOF/BOP slag The recycling of blast furnace BF slag has made significant progress in past years with much of the material being utilized as construction aggregate and in cementitious applications However, the recycling of BOF/BOP slag still faces many technical, economical, and environmental challeng...

  • Technical Report UDC 669 162 275 2 666 972 12 ,

    Iron Blast Furnace Slag Aggregate for Concrete in 1977 and fine BF slag aggregate as JIS A 5012 Water Granulated Iron Blast Fur-nace Slag Aggregate for Concrete in 1981 Thereafter, the two were unified as JIS A 5011-1 Slag Aggregate for Concrete, Part 1 Blast Furnace Slag Aggregate Then, in 1983, the Japan Society of Civil...

  • Ground Granulated Blast Furnace Slag in Concrete and its ,

    The ground granulated blast furnace slag GGBFS is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength and durability This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree ....

  • Blast Furnace Slag

    Blast furnace slag materials are generally available from slag processors located near iron production centers Cements containing ground granulated blast furnace slag are available from many producers of Portland cement or directly from ground granulated blast furnace slag cement manufacturers...

  • Promotion of in

    Steel slag Slag is a by-product that is separated and recovered from molten metal during metal refining It is used as road base material and raw material for cement is almost entirely utilized Approximately 70 of blast furnace slag is used for cement, while steelmaking slag is used for materials for road bases, civil engineering work, fertilizer, soil improvement, etc...

  • Blast Furnance Slag

    Ground granulated blast furnace slag GGBFS has been used for many years as a supplementary cementitious material in Portland cement concrete, either as a mineral admixture or as a component of blended cement The use of GGBFS in Portland cement is governed by AASHTO M302 1 Three types of ground granulated slag cements are typically ....

  • Ground Granulated Blast Furnace Slag

    While substitution of ground granulated blast-furnace slag for up to 70 of the portland cement in a mix has been used, there appears to be an optimum substitution percentage that produces the greatest 28-day strength This is typically 50 of the total cementitious material but depends on the grade of ground granulated blast-furnace slag used...