high yield steel slag iron separation process

DRY MAGNETIC SEPARATION TECHNOLOGY FOR THE RECOVERY OF IRON MINERALS IN FINE-GRAINED STEEL SLAG

Currently, the processing of steel slag from major plants in China is typically done by water quenching method. However, this methodinvolves mineral- aggregate problems and a difficult subsequent handling process due to high iron content 6]. In [universities and

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IRON AND STEEL

 · This section deals with the types of iron and steel which are produced as a result of the steel-making process. Wrought iron If all the carbon is removed from the iron to give high purity iron, it is known as wrought iron. Wrought iron is quite soft and easily worked

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Sustainable Utilization of Steel Slag from Traditional Industry and …

 · led to the increase of steel slag emissions. Steel slag is a kind of industrial solid waste produced in the process of iron and steel smelting, and its emission is about 15 wt%–20 wt% of crude steel output [1]. According to the data released by the World Iron and

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Research Progress of Impurity Removal from Metallurgical Slag and Strengthening Metallurgical Process …

namely converter steel slag and waste refining slag. Steel slag is one of the by-products of steelmaking process, and its yield is about 10%~15% of crude steel output, and waste refining slag is also the by-product of secondary refining of molten steel. These

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slag produced during extraction of iron

Slag is a by-product generated during the manufacturing of pig iron and steel. During the blast furnace process, slag is formed in two stages: first primary .. Metallurgical slags play an important role in the extraction and refining of metals. Chat

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Heavy Media Separation Process

 · The heavy-media separation process, or HMS, employing ferrous media, usually ferrosilicon and/or magnetite, is the most generally used process for sink-float separations. A stable medium over the range of specific gravities from 1.25 to 3.40 can be maintained within close limits and is cleaned and recovered by magnetic means.

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Characterization of the products obtained by pyrolysis of …

 · Magnetic separation of steel slag During the integration process of oil sludge pyrolysis with steel slag reduction, the yield of pyrolysis tar reached a maximum of 10.63% at 550 C. So, the magnetic separation of steel slag was investigated at 550 C. As is well

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Carbothermal Reduction of Boron-bearing Iron …

The iron ore-coal mixture is used in the direct reduced iron (DRI) process, such as Inmetco, Fastmet and Comet. 4,5,6) In order to obtain high quality slag free hot metal or DRI, several new processes, such as Fastmelt, Hi-QIP and ITmk3 process, have also 7,8,9

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High Alumina Slag and Blast Furnace Operation – …

 · High Alumina Slag and Blast Furnace Operation. Blast furnace (BF) process of ironmaking is a process where liquid iron (hot metal) and liquid slag are produced by the reduction of iron bearing materials (sinter and / or pellet and lump ore) with coke and by fluxing of the gangue material of the feed materials.

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Optimisation of hot metal desulphurisation slag in the CaO/Mg co-injection process to improve slag …

slag conditions (e.g. powdery slag). Total iron (TFe) content in the skimmed slag was found to be up to 75 wt% in the form of iron droplets dispersed in the slag, which is one of the big yield losses in the steelmaking process. Furthermore,

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Slag/metal Separation Process of Gas-Reduced Oolitic High-Phosphorus Iron ore Fines,Journal of Iron and Steel …

Slag/metal Separation Process of Gas-Reduced Oolitic High-Phosphorus Iron ore Journal of Iron and Steel Research International ( IF 1.213) Pub Date : 2014-11-01, DOI: 10.1016/S1006-706X Hui-qing Tang,Long Ma,Jun-wei Wang,Zhan-cheng Guo

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CHROMIC: NEW PROCESSES TO RECOVER METALS FROM …

For the carbon steel slag, originating from an EAF, three particle sizes were studied (0-5 mm, 20-40 mm, 40-185 mm). The ferrochrome slag was crushed and sieved to a 4-9 mm fraction. The stainless steel slag is a finegrained fraction (< 500 µm) obtained

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Thermodynamic analysis and experimental study of manganese …

converter when high-phosphorus molten iron is smelted. Separation of the decarburization process from dephosphorization (using De-P and De-C converters) in the duplex melting process is advantageous, as it allows for the use of phosphorus-rich iron ore and

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Newcoal-based process to produce for EAF

dust after size separation. KEYWORDS:DRl, quality, coal-based process, melting, rotary hearth furnace, steel waste, recycling. 1. Introduction Direct reduced iron (DRI) is an alternative iron source for scrap in electric arc furnaces which are used to produce steel

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Quantitative Determination of Metallic Iron Content in Steel …

the metallic iron content in the slag. After boiling the slag sample, the solution should be filtered immediately. When the solution temperature begins to decrease, the Fe2+ and Fe3+ will partially precipitate to form Fe(OH) 2 and Fe(OH) 3, especially for the high

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US3579328A

A PROCESS IS PROVIDED FOR THE PRODUCTION OF FERROVANADIUM FROM SLAG OBTAINED FROM VANADIUM-CONTAINING PIG IRON OR OTHER VANADIUM-CONTAINING MATERIAL, CHARACTERIZED IN THAT THE REDUCTION OF THE SLAG ...

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Sequestration of carbon dioxide in steel slag

Swedish iron and steel industries produce 1-1.5 Mton of residual products [12]. 70% of the total residuals is metallurgical slag. Slag is produced during the steel manufacturing process as

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Reduce Slag Carryover Reliably in Steel Production

Steel slag, a molten liquid melt of silicates and oxides, is a normal occurrence during the steel-making process, but it is also an expensive and detrimental consequence. Slag is created by the separation of the molten steel from impurities inherent in iron ore and ...

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Reduce Slag Carryover Reliably in Steel Production | …

 · Steel slag, a molten liquid melt of silicates and oxides, is a normal occurrence during the steel-making process, but it is also an expensive and detrimental consequence. Slag is created by the separation of the molten steel from impurities inherent in iron ore and scrap metal. Slag impurities degrade steel.

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(PDF) Use of Steel making Slag as a soil conditioner to …

During this melting process slag are removed in different roots of production of steel.If furnaces melt around 2 million ton of scrap metal, then the Slag removal rate will be in a range of = 6% of 20,00000MT= 1, 20,000 MT/Y to = 8% of 20,00000MT= 1, 60,000 MT

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Chemistry and Mineralogy of Titanium-rich Slags

iron or steel powders, respectively. Another part of the production of the crude titania-rich slag is further acid-leached under a high-pressure and moderate-temperature hydrometallurgical process to yield an upgraded titania slag with 94.5 mass percent TiO 2 ...

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Steel Recycling Principles and Practice

Spring steel - is a low alloy, medium carbon steel, or high carbon steel with very high yield strength such that it can return to its original shape despite significant bending or twisting. Alloy steel – To meet a variety of specifications such as hardness, toughness, and machinability, manufacturers use various alloying elements like chromium, manganese, molybdenum, nickel, tungsten, and ...

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CN101342512A

The slag and steel are separated by fine processing of waste steel slag, the iron content in the waste slag is lowered, the waste steel is smelted again and recovered for use. The invention can...

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Integrated and innovative steel slag utilization for iron …

 · LFS, known as refining slag, comes from the refining process of pig iron via ladle furnace converters, where the steel is desulphured during the secondary metallurgy process (Das et al., 2007, Setién et al., 2009). Calcium, iron, silicon, magnesium and aluminum oxides represent more than 95% of the total calcined mass in LFS.

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STUDY OF IRON AND STEEL SLAG AS A PRODUCT WITH RESPECT …

 · Steel making process in electric arc furnaces generates up to 15 % of slag per ton of steel. Major components of steel mill slag include Ca-silicates, Ca-Al-ferrites, and molten oxides of calcium, iron, magnesium, and manganese. The composition of slag varies upon the type of furnace and charge, the desired grade of steel purity and the furnace operation conditions. Materials to be added to the steel melt directly before the end of the reheating process are not fully embedded in the slag structure, so they can be found in the slag as "free" oxides (CaO, MgO). Compared to blast furnace slag, steelmaking slag shows a considerably higher content of iron, manganese, and magnesium along with the lower silicon content i.e. higher CaO/ SiO2 ratio, and, finally, it contains almost no sulphur at all. Steel mill slag …

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STUDY OF IRON AND STEEL SLAG AS A PRODUCT WITH RESPECT …

 · lower grade ores may yield much higher slag fractions. Steel making process in electric arc furnaces generates up to 15 % of slag, which is, based on …

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UDC 669 . 054 . 82 : 669 . 184 . 244 . 66 Processing and Reusing …

The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron, ③ crushing and classification of the slag for grain size adjustment to manufacture the slag product, and ④ aging treatment of the slag product for improving its quality and volumetric stability. Each of the above processes …

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High-Titanium Slag Preparation Process by Carbothermic …

 · The traditional electric furnace smelting process is always maintained at 1873 K to 2073 K (1600 C to 1800 C) for approximately 8 to 10 hours, and it contains 10 to 12 pct FeO in the slag to obtain high fluidity of the slag and ensure the separation of liquid iron

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Modeling of a Milling and a Spiraling Circuit to Recover High Carbon-Ferro-Chrome from Slag

Abstract High carbon ferrochrome (HCFeCr) alloy is the main source of chromium in steel making processes. During the production of high carbon ferrochrome alloy, in ferrochrome smelters, a substantial amount of slag is produced. These slags are generally

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6 Steel Industry | Separation Technologies for the …

 · The process of ironmaking takes place in the blast furnace, a highly productive unit capable of turning out several thousand tons daily of molten iron, known as "hot metal" or "pig iron" (if cast). Inside the blast furnace, a high-temperature reducing atmosphere is maintained while fuel and ore are fed into the furnace, more or less continuously, through the top.

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SLAG

16-2 SLAG - IRON AND STEEL 16 Slag - Iron and Steel S lag is a by-product generated during manufacturing of pig iron and steel. It is produced by action of various fluxes upon gangue materials within the iron ore during the process of pig iron making in blast

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steel making slag iron magnetic field intensity in us

Patent US20140166787 - Processing of steel making slag - Google ... 19 Jun 2014 ... A system for processing slag material from a steelmaking process ... 12/898,276 filed Oct. 5, 2010, which is a Continuation-in-Part of U.S. patent application Ser. ...

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