slag blast granulating heat recovery

Dry slag granulation with integrated heat recovery

Dry slag granulation could make a fundamental change in slag treatment. In this new approach, molten slag is atomized under centrifugal forces on a spinning disc, and the droplets generated are quenched and solidified quickly using air, with simultaneous heat recovery.

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Feasibility of Rotary Cup Atomizer for Slag Granulation

4) The sensible heat of slag can be efﬁciently recovered by impinging reactive gas such as mixture of methane and –3) The purpose of this paper, therefore, was to investigate a possibility of granulating slag by the RCA, in which inﬂuence of cup shape, cup speed, slag viscosity and gas ﬂow rate on the granulation was mainly examined.

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DRY SOLIDIFICATION WITH HEAT RECOVERY OF

quenching of the liquid blast furnace slag in a large excess of water (ratio of water to slag = 610/1). 4 This involves feeding the slag through one or more water jets and into a granulating spout or a granulating tank, so that it is dispersed into fine

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slag granulation process

dry granulation copper slag stmatthewlutheranschool. TPT Dry Granulation of Blast Furnace Slag for Heat Dry Granulation of Blast Furnace Slag for Heat Recovery. Blast furnace slag is known as by product from the production of hot metal at integrated steel and iron mills. Chat With Sales

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S. J. Pickering/New process for dry granulation and heat ...

new process for dry granulation and recovery of heat from molten slag Essentially, the process is to atomize the molten slag and then to cool the particles rapidly so as to produce a glassy slag. The atomization is done using a rotarycup, airblast atomizer.

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COKE PRODUCTION FOR BLAST FURNACE IRONMAKING

CO/CO2 environment that exists throughout the lower twothirds of the blast furnace. A large mean size with narrow size variations helps maintain a stable void fraction in the blast furnace permitting the upward flow of gases and downward of molten iron and slag thus improving blast furnace productivity.

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chinese technology for blast furnace slag granulation process

Blast furnace slag present invention dry granulation and heat recovery ... furnace slag and waste heat recovery process translated from Chinese .... particles, and then using the remaining heat recovery technology methods.

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granulating blast furnace slag Traduction en français ...

An electricity generation method by use of the heat from blast furnace slag includes: the blast furnace slag is carried to a windquenching system (2).

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chinese technology for blast furnace slag granulation process

Environmental Problem in Chinese IronSteelmaking Industries and Effective ... Blast furnace slag was taken as an example for the evaluation and popular endothermic reactions in ... Regarding to BF slag, the heat recovery process based on air blast method has ..... area of the slag due to dry granulation is key technology. Read more

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iron plant slag

SLAG IRON AND STEEL Blast Furnace Slag In the blast furnace, the slag floating over molten pig iron (hot metal) is flushed out in slag pot and then sent to slag granulating plant or to cooling pits. Depending upon the cooling process, three types of slags are generated, namely, aircooled slag, granulated slag and expanded slag. Get price

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Head Recovery Applications | Valorisation Strategies | REslag

Slag as heat storage material for waste heat recovery (leaded by CIC Energigune). RESLAG project aims to design and construct a high temperature and high thermal performance heat recovery system oriented to the EAF offgas with a double objective: Recover up to a 15% of the primary energy, contained in the EAF offgas stream.

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Waste heat recovery from blast furnace slagwashing water ...

Blast furnace slagwashing water as heat energy, because of its temperature stability, flow characteristics, is gradually becoming the waste heat recovery and utilization of research. Currently, hedge against water waste heat recovery systems using residuewashing water heating, bath water and waste heat to generate electricity.

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Energy Saving and Emission Reduction from the Steel ...

Zhang X, Zhou S (2009) The prospect of sensible heat recovery of blast furnace slag. In: The 7th China iron and steel annual meeting proceedings, Beijing, China, 11–13 Nov 2009, vol 7, pp 175–178

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USB1 Method for granulating a liquid slag bath ...

The method for granulating liquid slag melts, in particular blast furnace slag, in which the melt ( 2 ) is ejected into a cooling chamber via a slag tundish ( 1 ) and in which fluid under pressure, in particular compressed gas, vapor or pressurized water, is injected in the direction of the slag exit ( 6 ) in order to eject said liquid slag, is characterized in that the pressure fluid jet ...

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HEAT RECOVERY FROM MELTED BLAST FURNACE SLAG .

Indirect heat recovery from hightemperature air generated by contacting air. with melted slag (5) and from hightemperature steam generated by contacting water. with melted slag (6) have been proposed, but these methods requires large heat. transfer surface area due to .

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Dickinson Blast Furnace Services

Daily inspection of all blast furnace casthouse operations. Providing ArcelorMittal with a casthouse repair schedule. Keeping records of iron casts vs refractory consumption. Cleaning and removal of all penetrated iron. Removing all liquid iron and slag in the troughs and drain hole area.

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TPT: Dry Granulation of Blast Furnace Slag for Heat Recovery

Dry Granulation of Blast Furnace Slag for Heat Recovery Blast furnace slag is known as a byproduct 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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slag granulation process pdf

The process of granulation in blast furnace slag (BFS) by gas quenching can effectively recover the waste heat of BFS and improve the valueadded nature of the BFS byproduct. With decreasing temperature, BFS crystallizes into melilite, anorthite, spinel, etc .

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Development of Molten Slag Dry Granulation and Heat ...

Development of Molten Slag Dry Granulation and Heat Recovery in Steel Industry DAI Xiaotian,QI Yuanhong,ZHANG Chunxia(State Key Laboratory for Advanced Steel Processing and Products,Central Iron andSteel Research Institute,Beijing 100081,China)

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slag blast granulating heat recovery

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