recycling of blast furnace slag
This forms blast furnace (BF) slag, which floats on top of the surface of the hot metal (Peters, 1982) The blast furnace is designed to work in a counter-current manner, meaning that the solid charge of ore and coke descends while the gases that are generated at the bottom of the furnace ascend
Analysis of Slag Flow in Blast Furnace during the Extraction of Iron 1Mayurkumar S Suthar , 2 Prof , The industrial slag (actual slag from different blast furnace), synthetic slag prepared in the laboratory for pure oxides as obtained from market and iron bearing , Which Will Promote The Recycling Of The Waste, Containing Titanium
Blast Furnace Slag CAIROX ® POTASSIUM PERMANGANATE Treatment Foundries are major consumers of waste materials (scrap iron and steel) Unfortunatley, the recycling of these materials results in the generation of toxic substances that must be managed properly
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
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
The project aim set measurement of flow characteristics of blast furnace slag The industrial slag (actual slag from different blast furnace), synthetic slag prepared in the laboratory for pure oxides as obtained from market and iron bearing materials with various extents of reduction
Dry Granulation of Blast Furnace Slag for Energy Recovery Around 300 kg of liquid slag is produced as byproduct while producing one ton of hot metal in a blast furnace (BF) This slag is at a temperature of around 1500 deg C and has a sensible heat of approximately 400 M Cal per ton
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
Concrete mixtures from blast-furnace slag, or from an electric arc furnace slag, met the strict standards for road concrete STN 73 6123, which is used for demanding applications in roads of first .
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
May 09, 2018· 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 ,
material for blast furnace This NKK’s recycling technology, in which waste plastics are used as a substitute for coke, a reducing agent of iron ore, has been officially authorized as a recycling method under the PWRL (Packaging Waste Recycling Law), and is now going to be applied to recycling of waste plastic packaging
The first use of block coal, a type of bituminous coal that could be used in a blast furnace uncoked, was at the nearby Clay Furnace and gave the impetus to the development of industry at Sharpsville and the Shenango Valley Learn more
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
Determination of optimum blast furnace slag cooling rate for slag recycling in cement manufacture Y L Qin1,XWLv*2, J Zhang2, J L Hao2 and C G Bai2 The crystallisation behaviour of molten blast furnace slag was observed in situ using the single hot
Waste slag as alternative raw material in the cement production Ferrous slag is produced by adding slagging agents such as limestone or dolomite and/or fluxing materials to blast furnaces and steel furnaces to strip the impurities from iron ore, steel scrap, and other iron or steel input feeds
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 .
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
The slag can also be used to create fibers used as an insulation material called slag wool Basic slag Basic slag is a co-product of steelmaking, and is typically produced either through the blast furnace - oxygen converter route or the electric arc furnace - ladle furnace route
Table of ContentsGranulating SlagSlag CementPortland Cement made from Slag and LimestoneIron Portland CementSpecial CementsSlag BricksDiscussion The successful establishment of iron blast-furnace plants at Newcastle and Lithgow naturally invites attention to the economic utilization of the various products and by-products arising out of the industry
Ground granulated blast furnace slag (GGBS) is a by-product from the blast-furnaces used to make iron Blast-furnaces are fed with controlled mixture of iron-ore, coke and limestone, and operated at a temperature of about 1,500°C When iron-ore, coke and limestone melt in the blast furnace, two products are produced—molten iron, and molten slag
Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnac When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition GBFS is said to increase durability of concrete due to an increased setting time, which reduces
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
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 .
Properties and Uses of Iron and Steel Slag MF 182-6 NATIONAL SLAG ASSOCIATION nationalslagassocorg Page 5 Granulated blast-furnace slag is produced by quickly quenching (chilling) molten slag to produce a glassy, granular product The most common process is quenching with water, but air or a combination of air and water may be used
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
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 .
Slag is a valuable resource for any steelmaker Integrated steelmakers sell blast furnace slag - which is naturally cementitious in quality - into the cement industry In addition, the slag from the BOS plant such as converter slag and ladle slag has useful properties once weathered to allow for expansion of the lime-bearing material
In 1999, LA DOTD approved the use of Ground Granulated Blast-Furnace Slag (GGBFS) grade-120 for use in its pavements and structur Since this time, there have been three pavement projects (LA 14, Line Road, and US 190) and two structural projects (Charenton Bridge Deck and US 11 Bridge Overlay) that have used GGBFS grade-120 successfully
Blast furnace slag is recovered by melting separation from blast furnaces that produce molten pig iron It consists of non-ferrous components contained in the iron ore together with limestone as an auxiliary materials and ash from coke Approximately 290 kg of slag is generated for each ton of pig iron When it is ejected from a blast furnace .
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