Fig 2 Types of BF slag. Air-cooled slag – When the liquid slag is poured into beds and slowly cooled under ambient conditions, a crystalline structure is formed, and a hard, lump slag is produced, which can subsequently be crushed and screened. Liquid slag is permitted to solidify under the prevailing atmospheric conditions, either in a pit adjacent to the furnace, or in one some distance ...
The blast furnace slag can be crushed and processed into blast furnace slag aggregate by roller crusher and ground granulated blast furnace slag by ball mill. These two materials can be widely used in construction, infrastructure and agriculture. Blast furnace slag aggregate.
In concrete, processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense ready-mixed concrete. Blast furnace slag can also be used to make Ground Granulated Blast-furnace Slag (GGBS) which is used as a cement replacement in concrete.
10.2.2 Blast furnace slag. Blast furnace slag (BFS) is a by-product from iron production in blast furnaces, which are fed by a mixture of iron-ore, coke and limestone. In the process, the iron ore is reduced to iron while all remaining materials form the slag, which is …
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Since road construction materials are frequently characterised by use of resilient moduli, the compressive strengths and resilient moduli were determined for road base of the following slags: 1) air cooled crushed blast furnace slag; 2) mixes of air cooled blast furnace slag, granulated slag and lime; 3) mixes of air cooled blast furnace slag ...
Iron Blast Furnace Slag. Synthetic nonmetallic byproduct simultaneously produced with pig iron in a blast furnace that consists primarily of a fused mixture of oxides of silica, alumina, calcium, and magnesia. Manufactured Fine Aggregate. crushed rock, gravel, iron blast-furnace slag, reverberatory furnace slag, or steel furnace slag.
RFQ-134283 Blast Furnace Slag and Crushed Limestone - Blast Furnace Slag and Crushed Limestone. This solicitation is CLOSED. Notice; Categories; Documents & Items; Print. Get instant access. to solicitation details & future business opportunities. Get Access. Vendor packages with access to similar open solicitations ...
1. Use of steel slag and blast furnace slag in asphalt is encouraged from an environmental perspective. 2. Use of blast furnace slag in concrete is encouraged from an environmental perspective. 3. Generally, blast furnace slag does not represent significant environmental problems when used as a construction material above the ground water table.
Air-Cooled Blast Furnace Slag is hard but can be crushed and screened easily. The resultant material can be crushed to produce an angular and roughly cubical coarse aggregate which can be used in many segments of highway construction including base courses, fill and embankments etc.
12%Physical properties and geometrical morphologies of crushed air-cooled blast furnace slag (SCR) and crushed limestone (LCR) were comparatively investigated. The shape, angularity, surface texture and internal pore structure of aggregate particles for different size and gradation were numerically represented by sphericity (ψ) and shape index (SI), angularity number …
ed slag, pelletized slag, and granulated blast furnace slag. a) Air-Cooled Blast Furnace Slag If the liquid slag is poured into beds and slowly cooled under ambient conditions, a crystalline structure is formed, and a hard, lump slag is produced, which can subsequently be crushed and screened. b) Expanded or ed Blast Furnace Slag
GBFS is also used as an effective replacement of natural sand / crushed sand in concrete as a fine aggregate. GGBFS enhances long-term performance and durability characteristics in concrete while reducing life-cycle and maintenance costs. General replacement of cement with GGBFS in concrete can be 20-80% by weight.
Blast furnace slag fine aggregate received the JIS A 5012 certification in 1981. The Architectural Institute of Japan and Japan Society of Civil Engineers have also published guidelines on the use of this material. Today, this JIS certification has been revised to JIS A 5011-1 (concrete slag aggregate) and has also been added to JIS A 5308 ...
12%Morphology characteristics of mix aggregates with crushed air-cooled blast furnace slag (SCR) and crushed limestone (LCR) with 5–20 mm and 20–40 mm gradation were represented by numerical parameters including angularity number (AN) and index of aggregate particle shape and texture (IAPST). The effect of mix aggregates containing SCR on compressive strength …
3.1.2 Crushed GBFS (Granulated Blast Furnace Slag): There are Three types of slag are first one is air-cooled slag, second one is granulated slag and third one is expanded slag which is depending on the cooling process of slag. Oxides commonly found in slag:-• Ferrous Oxide (FeO) • Ferric Oxide (Fe 2 O 3)
JIS A 6206: Ground granulated blast furnace slag for concrete (2013 revision) Architectural Institute of Japan: Recommendation for Practice of Concrete with Portland Blast Furnace Slag Cement (2001 revision) Architectural Institute of Japan: Proposed Recommendation for Practice of Crushed Blast Furnace Slag Concrete (1978) Architectural ...
Expanded Blast Furnace Slag Crushed expanded slag is angular, roughly cubical in shape, and has atexture that is rougher than that of air-cooled slag. The porosity of expanded blast furnace slag aggregates is higher than ACBFS aggregates. The bulk relative density of expanded slag is difficult to determine accurately, but it is approximately 70 ...
Trade Name: DURA SLAG™ Description: A ground powder made with an appropriate mill from a glassy granular material formed when molten iron blast furnace slag is rapidly chilled as by immersion in water." "Slag is a nonmetallic byproduct of the production from the production of iron.
Molten blast furnace slag is tapped from the furnace into ground bays where it air-cools to form a crystalline rock-like material. When cooled, the BFS is crushed and screened to a full range of aggregate sizes. There has been a significant amount of information published on the properties of BFS
Ground granulated blast-furnace slag, when used in general purpose concrete in North America, commonly constitutes between 30% and 45% of the cementing material in the mix (Fig. 3-4) (PCA 2000). Some slag concretes have a slag component of 70% or more of the cementitious material. ASTM C 989 (AASHTO M 302) classifies slag by its increasing level of
LEACHING TESTS FOR THE EVALUATION OF ENVIRONMENTAL SUITABILITY OF CRUSHED CONCRETE AND AIR-COOLED BLAST FURNACE SLAG. The paper describes the environmental performance of an air cooled blast furnace slag from a 12 year old highway and crushed concrete that were evaluated based on leaching experiments.
The blast furnace is generally operated at 1500 °C. Controlled mixture of limestone, iron ore and coke are fed to the blast furnace. Iron and slag are produced in the molten form when limestone, iron ore, and coke are melted in the blast furnace. The slag in the molten form floats on molten iron due to light weight.
calcium and other bases. 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 …
As well as the protection of the environment against pollution, for this effect it is used as mixture of 15% of Crushed Granulated Blast Furnace Slag (CGBS) and 85% of Calcined Eggshell 142 Souhila ADJABI, Mohamed Salah NOUAOURIA, Wafa DJEBABLA Waste (CES). Different contents of this mixture were respectively used, namely: 5%, 10% and 15% ...
Expanded Blast Furnace Slag. Crushed expanded slag is angular, roughly cubical in shape, and has atexture that is rougher than that of air-cooled slag. The porosity of expanded blast furnace slag aggregates is higher than ACBFS aggregates. The bulk relative density of expanded slag is difficult to determine accurately, but it is approximately ...
Recently, the first batches of Hoa Phat finely crushed blast furnace slag S95 were officially launched to the market. This shows Hoa Phat's determination in optimizing technology, turning waste generated during the process of iron smelting into building materials, protecting the environment and bringing significant added value to the production chain of the Group.
Physical properties and geometrical morphologies of crushed air-cooled blast furnace slag (SCR) and crushed limestone (LCR) were comparatively investigated. The shape, angularity, surface texture and internal pore structure of aggregate particles for different size and gradation were numerically represented by sphericity (ψ) and shape index (SI), angularity number (AN), index of …
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. To flux the silica produced during steelmaking, limestone and/or dolomite are added, as well as other types of slag conditioners such as calcium aluminate or fluorspar. ...
place. For the experimental work, blast furnace slag was procured from Ghatge Patil Industry. The material was crushed and sieved and blast furnace slag passing through 20 mm sieve and retaining on 4.75mm. TABLE NO. 4 CHEMICAL COMPOSITION OF FURNACE SLAG Components Percentage Calcium Oxide 34-43% Silicon Dioxide 27-38% Aluminium Oxide 7-12%
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.Ground-granulated blast furnace slag is highly cementitious and high in calcium silicate hydrates (CSH) which is a strength enhancing ...
Crushed Air Cooled Blast Furnace Slag Used as 304. If air cooled blast furnace slag is selected for use, ensure that the material meets the requirements of Supplement 1027. This material can cause environmental concerns. The gradation and physical requirements are detailed in 703.17. Granulated Slag Used for 304
What is crushed slag? 1.5. 1.6 Slag. ... 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 furnace. This forces the chemical reaction to take place throughout the ore, not only at the surface.
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