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CONCEPT OF SLAG GRANULATION . The process of slag granulation involves pouring the molten slag through a high pressure water spray in a granulation head, located in close proximity to the blast furnace. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to take place.
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May 05, 2013 · Concept of slag granulation. The process of slag granulation involves pouring the molten slag through a high pressure water spray in a granulation head, located in close proximity to the blast furnace. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to take place.
The quenching of this liquid slag with an excess of water (granulation), air and water (pelletisation) or steam forms a granular product. For each ton iron about 1.6 tons raw material, 330 kg coke, 150 kg coke coal powder and 900 m³ hot air are necessary. About 230 - 300
Dry slag granulation with heat recovery. Primetals Technologies, voestalpine Stahl, the FEhS – Building Materials Institute and the University of Leoben joined forces in an R&D program to develop a new dry-granulation technology using air to cool molten slag and recover the lost heat energy.
The combined avoided GHG emissions for dry granulation over wet granulation were 87 kg CO 2 e/t slag, and 867 kg CO 2 e/t slag compared to air cooling of slag.
May 31, 2019 · However, the most commonly used process for melt granulation uses water jets. Water granulation of slag has some shortcomings when measured against increasingly stringent requirements for sustainable operations. As a "wet" process, water granulation cannot recover high-grade waste heat from molten slags.
INBA cast house Slag Granulation system of BF-4 is a unit which not only granulates the molten slag but also reduces the load on slag circuit. This unit cools and granulates the liquid slag coming out during a casting using a compact system comprising big pumps .
The process of slag granulation involves pouring the molten slag through a high-pressure water spray in a granulation head, located in close proximity to the blast furnace. Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to take place.
Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a saleable product (granulated slag sand used as CO 2-friendly substitute of clinker in cement production) rather than a difficult and costly waste material.Paul Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum.
Some operations use slag additives to stabilize slag, but this solution is expensive and can limit the end use of slag due to inclusion of toxic elements. Air granulation was hypothesized as a water-free method for stabilizing AOD slag via rapid quenching.
Jan 02, 2019 · Slag is commonly air-cooled in large pits and used for landfill or used for road-based materials after crushing and screening. In some modern integrated steelworks, molten blast furnace slag is granulated using water jets — producing a glassy product which can be used as valuable feed in .
The utility model relates to the field of metallurgical ironmaking equipment, in particular to a water processing system for blast-furnace slag granulation. The water processing system for blast-furnace slag granulation comprises a condensing tower, a granulator, a dewatering drum, a water collecting tank, a sedimentation tank, a lift pump, a cooling tower, a cold water tank, a condensed .
Dry Granulation of Blast Furnace Slag for Heat Recovery Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about 1500°C is tapped together with each ton hot metal.
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Blast Furnace Slag is utilized by cement manufacturers for producing Portland Slag Cement (PSC). It is a blended either inter-grinding in the Portland Cement Clinker, Gypsum & Granulated Slag or blending the Ground Granulated Blast Furnace Slag (GGBS) with Ordinary Portland Cement by means of mechanical blenders. At Tata Steel, we
Blast furnace slag is allowed to slowly cool by ambient air, is processed through a screening and crushing plant and is processed into many sizes for use primarily as a construction aggregate. Common uses are as aggregates in ready-mix concrete, precast concrete, hot mix asphalt aggregate, septic drain fields and pipe backfill.
A slag granulation plant basically consists of granulation, dewatering, and storage sections. Different granulation processes could be applied in granulation section. The liquid slag is either fed into a slag pot or it is directly fed via a runner to a granulation plant in order to produce conventional water GBFS.
Slag granulation using water sprays is now an established technology that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host of industries. The slag granulation plant comprises three sections: for granulation, dewatering and storage.
Jan 02, 2019 · Slag is commonly air-cooled in large pits and used for landfill or used for road-based materials after crushing and screening. In some modern integrated steelworks, molten blast furnace slag is granulated using water jets — producing a glassy product which can be used as valuable feed in .
The invention is particularly applicable to the granulation of slag tapped from an iron blast furnace. The granulated slag can be used as a Portland cement substitute in the manufacture of concrete. GB-B-2148330 discloses an apparatus and method for the granulation of slag. The granulator includes a rotary atomiser located within an enclosure.
The combined avoided GHG emissions for dry granulation over wet granulation were 87 kg CO 2 e/t slag, and 867 kg CO 2 e/t slag compared to air cooling of slag.
(4) A post process for drying slag is a must after the water quenching. (5) The thermal energy of high temperature slag is wasted without recovery. To solve these problems, we studied the dry granulation of the molten slag by rotary cup atomizer (RCA). The molten slag was supplied to the center of RCA.
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slag dump is constructed of which the capital and running costs are way in excess of those of a slag granulation plant. Processing of such slag-dumps is very labour intensive and costly, where crushing and screening plants are utilised to reduce the slag-dumps by either
Nov 07, 2013 · alternatively of about 6 MW electric power generation from a slag feed of one ton per minute can be calculated. Without the need of an upstream drying system for the blast furnace slag energy and as in consequence CO 2 can be saved. In summary dry granulation of blast furnace slag allows an environmental
Slag is a product of the steel making process. Once scorned as a useless byproduct, it is now accepted and, often, preferred and specified as it is known to be a valuable material with many and varied uses.
Saint-Gobain materials have been in use in iron making blast furnace installations since the early 1970s and were used in the first operating slag granulation systems. Co .
Blast furnace slag granulation | Technologies | Climate Technology Centre & Network. Cement is a global commodity, manufactured at thousands of plants. The industry is consolidating globally, but large international firms account for only 30% of the worldwide market. The principal and most visible market for cement is the construction industry ...
Nov 07, 2013 · alternatively of about 6 MW electric power generation from a slag feed of one ton per minute can be calculated. Without the need of an upstream drying system for the blast furnace slag energy and as in consequence CO 2 can be saved. In summary dry granulation of blast furnace slag allows an environmental
Ground Granulated Blast-furnace Slag (GGBS) Lafarge Emirates' GGBS is a premium quality, supplementary cementitious material that can be combined with cement to produce concrete having several advantages namely reduced heat evolution, enhanced durability, better .
The envisaged annual capacity of the plant is granulation of 530,000 tons of liquid slag. The plant for granulation of blast furnace slag is an addition made within the scope of the modernization project for the existing Blast Furnace, and is also part of the technological entity for production of crude iron.
The envisaged annual capacity of the plant is granulation of 530,000 tons of liquid slag. The plant for granulation of blast furnace slag is an addition made within the scope of the modernization project for the existing Blast Furnace, and is also part of the technological entity for production of crude iron.
