It appears in concrete, aggregate road materials, as ballast, and is sometimes used as a component of phosphate fertilizer. A study on wet flue gas desulphurization with steelmaking slag powder has shown that by a reasonable design and suitable operation, the steelmaking slag used … 1. The Ground Granulated Blast Furnace Slag (GGBS) is obtained by grinding blast furnace slag in water or steam. Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. 0000000456 00000 n 0000000016 00000 n a) Steel Slag The phosphorus content of BOF slag is too high to be used in ironmaking & steelmaking process some of the successful means of utilization are described below. <<87D8BD350A36644CA288235141CED114>]>> It contains 0.1% or less silica, is moisture free and is best used for: rust removal, heavy scale removal, paint and coatings removal on heavy-gauge steel Akinwumi concluded that steel slag can be used as a low cost soil modifier for use in subgrade stabilization. Ferrous slag is currently underutilized. Characteristics and Uses of Steel Slag in Building Construction focuses predominantly on the utilization of ferrous slag (blast furnace and steel slag) in building construction.. Full details of the specific properties and applications for each of the types of slag can be found on the pages as follows: Air-cooled Blast Furnace Slag (ABS) Air-cooled Basic Oxygen Steel Slag (BOS) Steel slag has been used to construct pavements for nearly one hundred years. The iron and steel slag used as aggregates for asphalt roads are iron and steel by-products. Slag is primarily used in the cement and construction industries, and largely in … 18 8 This process leads to a glassy, granular product that is then dried and ground into a fine powder. Slag processors may handle a variety of materials such as steel slag, ladle slag, pit slag, and used refractory material to recover steel metallics. Steel slag is used for dressing and for 0 Approximately 40% of iron and steel slag products, and 60% of blast furnace slag, are used in cement. Geographic Names Information System (GNIS), Mapping, Remote Sensing, and Geospatial Data, Historical Statistics for Mineral and Material Commodities in the United States, Iron and Steel Statistics and Information, Iron and Steel Scrap Statistics and Information. 0000000637 00000 n Â0Dïûó&»1šî¹Bñ¨. xÚb```a``’``d`¼¹‡Aˆ„€bL@YŽ†9Gl+—L``ø`odç V(f`ðaf`[À`Â`ÕÀÀ1Õ Slags are nonmetallic byproducts of many metallurgical operations and consist primarily of calcium, magnesium, and aluminum silicates in various combinations. Doing so would both offset the cost of restoring abandoned mine areas, as well as decrease steel manufacturers’ current waste footprint. The major chemical components of the cement and steel slag are shown in … 25 0 obj<>stream $ÄËÀë)¤™€ØˆxӁ4#Ï0 6­¯ Figure 1 shows the particle size distributions of the cement and steel slag powder. The steel slag is used as a secondary cementitious binder, or aggregates for road … Iron and steel slag products are used in a variety of areas where their unique characteristics are put to effective use. 0000000935 00000 n %PDF-1.4 %âãÏÓ 0000000717 00000 n Steel slag can also be used to absorb contaminants like phosphate, magnesium, iron, calcium, silica and aluminium in the wastewater treatment process, but loses its effectiveness over time. Slag is defined as a waste material produced from iron ore smelting process in blast furnace. startxref Slags are nonmetallic byproducts of many metallurgical operations and consist primarily of calcium, magnesium, and aluminum silicates in various combinations.   Iron and steel slags are coproducts of iron and steel manufacturing.    In the production of iron, the blast furnace is charged with iron ore, fluxing agents, usually limestone and dolomite, and coke as fuel and the reducing agent.   The iron ore is a mixture of iron oxides, silica, and alumina.   From this and the added fluxing agents molten slag and iron are formed.  The physical characteristics such as density, porosity, and particle size, are affected by the cooling rates and chemical composition.   Depending on the cooling method, three types of iron slag are produced— air cooled, expanded, and granulated— that have different types of applications. The most common use is as an aggregate in the manufacture of asphalt. Steel slag is commonly used to cover driveways, to fill potholes, repair farm lanes, residential entrances, or yards.Steel slag is not just good for driveways, it is also used by homeowners as a landscaping stone in back yards around a pool area or patio. Our slag cement CEMSlag TM is a hydraulic cement material created when granulated blast-furnace slag from the steel manufacturing process is ground to a fineness suited for concrete production. Steel slag is a by-product in the production of steel. Blast furnace slag is used in a variety of applications including structural concrete, mineral wool, and glass manufacture. Slag is a byproduct of steel production and is similar in character to volcanic rocks such as basalt and granite. $75. In the production of iron, the blast furnace is charged with iron ore, fluxing agents, usually limestone and dolomite, and coke as fuel and the slag (GGBFS). 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