During the production of stainless steel in an electric arc furnace a significant part of the charged chromium is transferred to the slag With the new technology of aluminium injection chromium is recovered from the slag thus alloying components and costs are saved Typical mechanically processed Al granules used for the EAF slag injection grain size approx 1 ndash2 mm
Granulated 20 049 10 384 21 030 10 792 Sub total 24 639 13 073 25 885 13 477 Steelmaking BOF 11 036 5 572 11 810 6 569 EAF 2 726 77 2 011 65 Sub total 13 762 5 649 13 821 6 634 Grand total 38 401 18 722 39 706 20 111 kton Fig 1 Uses of iron/steel slag FY 2012
However the use of GBFS Granulated Blast Furnace Slag and GGBFS Ground Granulated Blast Furnace Slag as stabilising binders in recent years has significantly increased the area of usage The types of slag covered in this guide are 1 Blast Furnace Slag known as BF Slag or BFS or Rock Slag iron process 2
MSDS Slag Page 5 of 6 Revised 03/01/14 Section 9 PHYSICAL AND CHEMICAL PROPERTIES Physical State Solid powder Evaporation Rate NA Appearance Gray/black or brown/tan powder pH in water 8 11 Odor None Boiling Point >1000 o C Vapor Pressure NA Freezing Point None solid Vapor Density NA Viscosity None solid Specific Gravity 2 3
Slag ratio of BOF and EAF is about 120kg/t steel Percentage of reclamation is 2 40 in 1980 For several cases a risk of the expansion and the alkali risk
The primary components of iron and steel slag are limestone CaO and silica SiO 2 Other components of blast furnace slag include alumina Alsub>2 O 3 and magnesium oxide MgO as well as a small amount of sulfur S while steelmaking slag contains iron oxide FeO and magnesium oxide MgO the case of steelmaking slag the slag contains metal elements
National Slag Association Since 1918 The NSA has promoted the use of Blast Furnace and Steel Furnace Slag Blast Furnace slag has been called the All Purpose Aggregate as it can be used in all construction applications as either a normal weight or lightweight expanded or pelletized aggregate depending on how it was formed and processed
EAF slag aggregates for radiation shielding applications Discussion Coffee break Application of ground granulated blast furnace slag as concrete additive in Germany the k value concept of DIN EN 206 The use of ground granulated blast furnace slag as a concrete addition performance concepts of the European concrete standard EN 206 Euroslag 2015
Ground granulated blast furnace slag GGBFS is a by product of iron and steel making obtained by quenching molten iron slag from a blast furnace in water or steam Used to increase the strength of concrete and used to improve workability of fresh concrete and reduce water demand shrinkage and permeability of the finished product
Steel slag is a byproduct of the steelmaking and steel refining processes This paper provides an overview of the different types of steel slag that are generated from basic oxygen furnace BOF steelmaking electric arc furnace EAF steelmaking and ladle furnace steel refining processes The mineralogical and morphological properties of BOF and electric arc furnace ladle EAF L slag
08 02 2017 Ground Granulated Blast Furnace Slag Ground Granulated Blast Furnace Slag GGBFS is a by product of the steel industry Ground Granulated Blast furnace slag is the nonmetallic product consisting essentially of silicates and aluminosilicates of calcium and of other bases that is developed in a molten condition simultaneously with iron in a blast furnace
12457 2 standard on 4 mm granulated slag and the leachate concentration was compared with the BOF slag electric arc furnace EAF slag and secondary metallurgy LF AOD VOD slag Di erent approaches were proposed to solve one of the most important problems that a ects BOF EAF and ladle slag the volume instability
When it is ejected from a blast furnace the slag is molten at a temperature of approximately 1 500℃ Depending on the cooling method used it is classified either as air cooled slag or granulated slag Air cooled slag The molten slag flows into a cooling yard where it is cooled slowly by natural cooling and by spraying with water
EAF slag must go through the oxidation phase and the reduction phase therefore it can be divided into two types namely oxidation slag and reduction slag In addition the gas and suspended particles that are emitted in this production process are collected by air pollution control equipment
Modeling on Dry Centrifugal Granulation Process of Molten them slag granulation process by a centrifugal force which is also called DCG process has proved its advantages due to its simpleness controllability less energy consumption and more sensible heat recovery in the past years 5–9 In this Modeling on Dry Centrifugal Granulation Process of Molten Blast Furnace Slag
LeadZincSlagSAF EAFHollow electrode von Blei und Zink konnen dabei gleichzeitig die Wirt vided in water granulated form so that the particle size was about 0 5 to 5 mm Figure 2 gives an impression of one treated slag 3 Thermodynamical modelling
Fig 3 Water granulation unit for slag granulation and two slag product samples from one of test campaigns a Water granulator b Water granulated glassy slag c Metallurgical powder calcium aluminate product 2 1 3 Treatment of EAF slag and EAF dust from stainless steelmaking for Cr Ni and Zn recovery
about the use of EAF slag in SCC in substitution to medium or coarse aggregates In 9 ground granulated blast furnace slag was added as fine in substitution to cement in SCC similarly in 10 EAF slag combined with AOD slag was used as filler in SCC but since some investigation 11 revealed that EAF slag as fine aggregates in the ordi
granulated BF slag s air cooled BF slag lump granulated ratoi hot m etal productoni Figure 2 Change of granulation ratio of BF slag1 Steelmaking slag In the steelmaking process molten metal is refined and converted into steel either in a basic oxygen furnace BOF or an electric arc furnace EAF and the molten steel
When OBMs contain high levels of phosphorus certain steps must be taken to try to push the phosphorus into the furnace slag and flush the slag from the EAF Factors that impact phosphorus removal from the steel into the slag include 1 high slag basicity high CaO content in slag 2 low steel bath temperature and 3 high FeO content in the slag
dry granulated EAF slag M Gelfi G Cornacchia R Roberti M Svanera F Uberto Università degli Studi di Brescia Brescia Italy ASO Siderurgica Ospitaletto Brescia Italy The aim of ASO Siderurgica in developing the SLAG REC system for the treatment of EAF slag is
Dry Granulation Copper Slag In Egypt 07/03/2019 Dry Granulation Copper Slag In Egypt The slagrec project for an innovative direct dry granulation of eaf slag after only one treatment process completely eliminating the risk of swelling and a new system for eaf slag dry granulation has been developed free online free consultaion Solutions Cases We provide quality and
EAF granulated slag showed higher density than natural aggregates as a consequence of their high iron content 20 ÷ 30 vs weight Hence the higher the amount of slag was in the mix the higher the density of concrete Wastes showed higher water absorption compared to
Slag ratio of BOF and EAF is about 120kg/t steel Percentage of reclamation is 2 40 in 1980 For several cases a risk of the expansion and the alkali risk
XSM Machinery chinese technology for blast furnace slag granulation proces in mineral processing aspects widely used many customers get Inquire Now slag granulation definition English A process for producing granulated slag sand from blast furnace slag by granulating the slag by means of a water jet in
08 02 2017 Ground Granulated Blast Furnace Slag Ground Granulated Blast Furnace Slag GGBFS is a by product of the steel industry Ground Granulated Blast furnace slag is the nonmetallic product consisting essentially of silicates and aluminosilicates of calcium and of other bases that is developed in a molten condition simultaneously with iron in a blast furnace
The results show that the disintegrated ladle slag was made volume stable by water granulation which consisted of 98 glass However EAF slag 1 EAF slag 2 and the BOF slag formed 17 1 and 1 glass respectively The leaching test showed that the glass containing matrix did not prevent leaching of minor elements from the modified slags
12 07 2020 Dry Slag Granulation Steelmaking slags are typically dumped to ground and used as low value road aggregate Hatch s dry slag granulation process uses air to directly granulate slag The dry slag granulation advantages include improved safety reduced noise and pollution and ability to access higher value added slag markets Custom Robotics
This paper deals with the use of industrial by products from electric arc furnace EAF granulated slag for the partial replacement of natural aggregates commonly used to manufacture concrete Three different gradings of EAF granulated slag were considered
20 10 2014 Granulated Pig Iron GPI can due to its properties be used in most metallurgical operations BF BOF EAF AOD LF or other furnaces such as cupola and inductive furnaces BF At times when hot metal demand from downstream facilities exceeds the reduction capacity of the blast furnace stockpiled GPI may be top–fed into the blast furnace to be re melted for a
15 11 2004 Abstract This paper describes the work carried out in laboratory to produce concrete with good properties using oxidizing electric arc furnace EAF slag as fine and coarse aggregate To do this the slag obtained in the steelmaking process must be crushed and stabilized First a suitable mortar must be made and tested
Slag granulation plant The invention relates to the granulation of molten slag directly from metallurgical furnaces Known installation granulated slag containing slag chute which consistently are hydrogenerator a hoppersump with grate and overflow device and coupled with well installed the airlift connected in turn with the dehydrator carousel with feeding hopper and
Refractory granulate for EAF For over 20 year Deref has been manufacturing mineral granules for the steel industry Under the range Magslag Deref proposes basic granules for furnace charge Thanks to their high magnesite content and their low silica level Magslag granules allow a better balance and foaming slag while protecting furnace
EAF slag sample 71686 it is needed to add at least either 2 91 Low P product or 0 4 MCP F to increase contents of P 2 O 5 stin the slag to 0 7 or to fast cool the slag by air granulation 3 Plant slag tests at Halmstadsverken 3 1 The normal EAF steelmaking At Halmstadsverken the EAF steelmaking was carried out normally by first
Phoenix Services EAF Electric Arc Furnace steel slag Phoenix Services Address 6870 Highway 42 Ghent KY 41045 502 519 3200 View Detail
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