slag cement iron content

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Low CO2 Concrete

Slag cement requires nearly 90 percent less energy to produce than an equivalent amount of Portland cement. Reducing the use of Portland cement in concrete by substituting a portion of it with slag reduces the embodied energy in a cubic yard of concrete by 30 to 48 percent.

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Manufacturing

Manufacturing. In the blast furnace at the steel works, slag is produced when the mineral components of the metal refining process separate from and float on the molten iron. The iron is drawn off to be further refined into steel and the slag is drawn off to be granulated. Granulation occurs when the molten slag (2,650 F to 2,800 F)

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What is Slag? (with pictures)

Jul 14, 2019Slag is commonly used to make cement. Common components of slag include the oxides of silicon, aluminum, and magnesium, as well as sulfur, which is always present. It also contains phosphorous, calcium, ash, remnants of flux materials such as limestone, and remainders of chemical reactions between the metal and the furnace lining.

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Slagl

The iron content is the major basic difference between BF slag and steel slag. In BF slag, FeO is around 0.5%, whereas, in case of steel slag, total iron content varies from 16 to 23%. The chemical analysis of granulated BF slag and steel slag generated in steel plants are given in Table - 2. USES Different types of slags find different uses in

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Utilisation of copper slag for cement manufacture

The chemical analysis of the slag indicated that its matrix is compatible with the cement system and can be used in the manufacture of OPC. The copper slag has been found to contain high iron oxide and may be used as a source of iron in the manufacture of OPC. However, the presence of high iron in the slag hinders its bulk utilisation.

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Ordinary Portland Cement

Type IV Portland cement is generally known for its low heat of hydration. Type V is used where sulfate resistance is important. This cement has a very low (C 3 A) composition which accounts for its high sulfate resistance. 2. As per EN 197 norm ( European norm) CEM I Comprising Portland cement and up to 5% of minor additional constituents.

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Slagl

SLAG - IRON AND STEEL CONSUMPTION The BF slag in India is used mainly in the cement manufacture and in other unorganised work, such as, landfills and railway ballast. A small quantity is also used by the glass industry for making slag wool fibres. Cement plants in the country producing slag cement require BF slag in granulated forms. The

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Evaluation of Strengths from Cement Hydration and Slag

After being separated from the liquid pig iron, the liquid slag was quenched with water to form glassy granular particles called granulated blast furnace (GBF) slag. GBF slag exhibits hydraulic cementing properties when it is finely ground, and it is called ground-granulated blast furnace (GGBF) slag

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NATIONAL SLAG ASSOCIATION

Slags are obtained from a number of different sources in addition to that from blast furnaces-the open-hearth steel furnace; the Bessemer converter; copper, lead, and precious-metal ore smelters; and electrochemical processes. This discussion deals with iron blast-furnace slag only and its use as a concrete aggregate.

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Introduction of slag cement

Blast-furnace slag (BFS) is formed from a liquid at 1350-1550 C during the manufacture of iron. When reaching the bottom of the furnace, the liquid slag forms a layer on top of the molten iron due to its lower density. Being separated from the molten iron, the liquid slag is cooled in the air or with water.

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Optimizing Concrete Pavement Mixes with Slag Cement

Slag Cement in Concrete - Standard Specifications Slag cement as a constituent of blended cement ASTM C595 or AASHTO M 240 Standard Specification for Blended Hydraulic Cements Type IS(35) = 65% PC + 35% Slag Type IT(S25)(P15) = 60% PC + 25% Slag + 15% Pozzolan Type IT(S25)(L10) = 65% PC + 25% Slag + 10% Limestone Slag cement as a SCM in concrete

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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 Celsius.

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Lafarge North America Products

Slag is a waste material from the blast furnace during the production of pig iron. Blast furnaces, which produce iron from iron ore in the presence of limestone or dolomite fluxes, produce a molten slag. This slag is tapped off the furnace separately from the iron.

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233R

The use of ground granulated iron blast-furnace slag cement (slag cement) as a cementitious material dates back to 1774 when Loriot made a mortar using slag cement in combination with slaked lime (Mather 1957). In 1862, Emil Langen proposed a granulation process to facilitate removal and handling of iron blast-furnace slag leaving the blast furnace.

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Slag Topic

Jul 01, 2019The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. Various types of slag are produced: - Blast-furnace slag—The nonmetallic product, consisting essentially of silicates and aluminosilicates of calcium and of other bases,

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Standard Specification for Slag Cement for Use in Concrete

The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement. Physical properties of the slag shall be in accordance with the requirements for fineness as determined by air permeability and air content, slag activity index, and compressive strength.

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(PDF) Strength and Durability Study on Concrete Using

The inclusion of Silica fume in concrete helps to increase the [7] A.Harikumar, Veeraragavan.S, and Satheesh.V.S, Iron Slag partial replacement content in concrete due to it is "Experimental Investigation of Replaced Optimum workability and strength property. Level of Coarse and Fine Aggregate by Iron Slag".

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Slagl

SLAG - IRON AND STEEL CONSUMPTION The BF slag in India is used mainly in the cement manufacture and in other unorganised work, such as, landfills and railway ballast. A small quantity is also used by the glass industry for making slag wool fibres. Cement plants in the country producing slag cement require BF slag in granulated forms. The

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Slag Iron Steel

SLAG - IRON AND STEEL slag up to 10% in the manufacture of Portland Slag Cement. Steel slags are produced at steel melting shop during steel manufacturing. To produce steel, removal of excess silicon and carbon from iron is achieved through oxidation by adding limestone and coke. The steel slag contains higher amount of iron and its physical

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Blast Furnace Slag

The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product. This molten iron product can be cast into iron products, but is most often used as a feedstock for steel production. Blast furnace slag is a nonmetallic coproduct produced in the process.

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Steel Slag Usage in Cement

Steel Slag Usage in Cement. About 100 – 200 kg of BOF slag is generated per ton of liquid steel. This material is often used in projects like road construction, but this route provides little energy efficiency gains. Steel slag can also be used in the cement clinker manufacturing process. The result is an increase in clinker production

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Reducing Cement Content in Concrete Mixtures

cement supplemental cementitious materials (SCMs) such as coal fly ash or slag cement, both industrial by-products of coal and iron production, respectively. WisDOT has set a maximum limit on Portland cement replacement through use of SCMs to ensure its performance on concrete pavements. Therefore, the only opportunity to reduce the usage of Portland

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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 Celsius. The process is carried out in a blast furnace.

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Ground granulated blast furnace slag as a concrete additive

slag in the years 1861/62, GBS rapidly became popular as a component of cement. The production and use of cement that contains blast furnace slag has a long and successful history in Germany. Portland blast furnace cements (earlier called: Iron Portland cements) and blast furnace cements have been in

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Evaluation of Ground Granulated Iron Blast

Iron ore, limestone, and coke are crushed and blended into a mixture constituting the raw materials for molten iron, which is produced in a 2700 F blast furnace. The residual molten slag is chilled rapidly by immersion in water to vitrify the material into a glassy sand-like substance.

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ALF

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.

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What is maximum content of GGBS in concrete mix design

May 31, 2019Senior Member. As per IS 455 portland slag cement specification and as per ammendment no 4 of May 2000. So according to IS code you can replace portland cement up to 70% by using GGBS. You may try replacing cement by more than 70% and share your experiance. The specifications are for manufacturing of cement. How i can use this for replacement of cement.

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Strength Analysis of Concrete by Using Iron Slag as a

Iron slag aggregate in concrete by replacing coarse aggregate is a most promising concept [2].The iron slag present in concrete Satisfy physical properties which slow down the hydration of blended cement due to morphology and low calcium silicate content [3]. Thus Iron slag can be used in conventional concrete to improve its mechanical

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86 IRON AND STEEL SLAG

IRON AND STEEL SLAG (Data in million metric tons unless otherwise noted) Domestic Production and Use: When making crude (or pig) iron and crude steel, slagging agents are added to strip impurities from the iron ore in the blast furnaces and from the crude iron and scrap steel feeds to the steel furnaces.

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Slag Cement

Slag cement is produced by finely grinding granulated blast furnace slag, a glassy by-product of iron production, and blending it with Portland cement to create a product that has a number of advantages over mixes containing Portland cement. ​​Environmental and LEEDS Benefits.

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Renovation projects

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