slag blast granulating heat recovery

UG Mat Blast Furnace Slag

Granulated Blast Furnace Slag Granulated blast furnace slag is a glassy granular material that varies depending on the chemical composition and method of production from a coarse popcornlike friable structure greater than mm No 4 sieve in diameter to dense sand size grains passing a mm No 4 sieve

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S J Pickering/New process for dry granulation and heat

In the area of heat recovery from molten slags some work is already 1n progress in Sweden and Japan In Sweden a subsidiary of the State Steel Company Merox Ltd is developing a process for granulating and recovering heat from slag The slag is granulated by striking a falling film of slag with previously solidified slag particles

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Chemical composition of iron and steel slag wt % [63]

Duan et al [5] also proposed a novel method of heat recovery system from blast furnace slag with coal gasification reaction to generate syn gas Their result suggested that the optimal conditions for slag waste heat recovery were achieved at 1623 K and steam to coal ratio of 2

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Progress in molten blast furnace slag treatment using dry

The molten blast furnace slag BF slag is discharged at the temperature of about 1400 1550℃ which contains a large amount of heat At present water quenching is the main technology to treat the BF slag but this method not only consumes a huge amount of water but also fails to recover the waste heat

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Blast furnace process

 · In order to keep the heat input as low as possible for energetic reasons as little gangue as possible should be contained in the ores This makes the ore processing described above necessary The reduced admixtures in the blast furnace then react with the added flux in the charge and are bound in the resulting slag

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High Temperature Processes

72Improvement of heat recovery system of cooler waste gas at Kokura sintering plant ・・・ 942 73Production of super low slag sinter at NSC Oita ・・・ 943 Effect of gaseous fuel injection on the pressure drop in sintering bed ・・・ 944

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Decarbonising the iron and steel sector for a 2 °C target

 · In a pathway based on energy recovery and resource recycling of glassy blast furnace slag and crystalline steel slag we show that a reduction of ± % CO 2 emissions to the sectoral 2 °C

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CO2 Gasification Rate Analysis of Datong Coal Using Slag

CO2 Gasification Rate Analysis of Datong Coal Using Slag Granules as Heat Carrier for Heat Recovery from Blast Furnace Slag by Using a Chemical Reaction Author Li Peng Yu Qingbo Xie Huaqing Qin Qin Wang Kun Source Energy Fuels 2022 pp 4810 4817 ISSN 1520 5029 Subject

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Waste Heat Recovery

Waste Heat Recovery ­ Technology and Opportunities in Industry ­ Prepared by BCS Incorporated March 2022 iii ­

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SLAG GRANULATION SYSTEM

 · SLAG GRANULATION SYSTEM This invention relates to a dry slag granulation system in particular one with waste heat recovery In a dry slag granulation system for granulating molten metallurgical slag into pellets using air as the primary cooling medium there is a tendency to oversupply air to ensure that the granulated material produced does not re …

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Lead and Zinc Smelting

blast furnace slag primarily silicates and lead bullion 98% by weight All layers are then drained off The speiss and matte are sold to cop per smelters for recovery of copper and precious metals The blast furnace slag which contains zinc iron silica and lime is stored in piles and is partially recycled Sulfur oxide emissions are

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Syngas production through biomass/CO2 gasification using

 · The emerging technology of biomass/CO 2 gasification to recover waste heat from granulated blast furnace BF slag for solving the energy crisis and relieving the greenhouse effect was proposed The gasification performances of biomass/CO 2 in granulated BF slag under different reaction temperatures and mole ratios of CO 2 to fixed carbon in the biomass CO 2 …

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Recovery of heat from molten slag from metallurgical

We claim 1 A method of recovering heat from slag from a metallurgical process comprising the steps of placing a molten slag below radiant heat absorbing tubes passing a fluid medium through the heat absorbing tubes causing heat radiated by the molten slag and by subsequently solidified slag at high temperature to undergo transfer to the fluid medium and thereby to be …

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Process to recover heat from melted blast furnace slag

A novel fluidized bed system is proposed to recover heat from melted blast furnace slag Fundamental study was conducted using a fluidized bed cold model and simulated melted slag Effect of the properties of melted material on the inclusion of bed material to the solidified simulated slag was investigated Also hot fluidized bed experiments were carried out using …

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Use of Blast Furnace Slag Aggregate in Concrete

of Ground Granulated Blast Furnace Slag in High Performance Concrete in China Wang Ling Tian Pei and Yao Yan from China Building Materials Academy [2] introduce studies and the application of ground granulated blast furnace slag GGBS in China GGBS concrete is characterized by high strength lower heat of hydration

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General Presentation

2 Improvement of granulating marra mamba ore by introducing the high speed agitating mixer 92 Fundamental analysis of waste heat recovery to steel scrap preheating in continuous casting process 106 Prevention effect of polyacrylate on solidification of blast furnace slag fine aggregate

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Your partner for sustainable metallurgical solutions

sion detection and heat recovery In addi tion we integrate tailor made detection systems heat exchangers and dedusting systems in your plant environment Added value for blast furnaces For blast furnaces we offer convincing solutions for the raw material and en ergy input as well as the control of the blast furnace As specialists we have

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John Gjers

Mr Gjers himself invented a method of superheating the blast for heated air engines He also patented an invention for granulating blast furnace slag to be used instead of sand for the pig beds as well as a new type of calcining kiln

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INBA slag granulation system

A continuously growing market for granulated slag and increasingly more severe environmental constraints have encouraged Paul Wurth to further improve the technology of granulation Heat recovery for hot blast stoves Cellissen Tom / Haak Edwin van der New reliable method for recovery of chilled blast furnaces Stein Callenfels van

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University of Leoben research gateway

Additionally the wet slag sand has to be dried for further use requiring even more energy This thesis describes the development of a dry process which granulates the blast furnace slag by air This way it is also possible to get a glassy product of high quality Additionally hot air is gained which can be used for heat recovery applications

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CFD Simulation on Dense Gas Solid Flow for Blast Furnace

 · Abstract In order to recover efficiently the rich heat released from 1450 blast furnace slag in the fluidized bed we find the best control parameters by seeking the relationship among the control parameters and their influence on heat transfer rate between gas and slag This paper focus on CFD simulation of the fluidized bed heat transfer process

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SAFETY GUIDELINES FOR IRON STEEL SECTOR BLAST FURNACE

out through slag runners iii Stoves and Hot Blast Supply System Hot Blast Stoves supply hot blast after heating cold air provided by turbo blowers/Fans to Blast furnace through hot blast main bustle main tuyere stocks and tuyeres Stoves are …

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CUUTE 1 Programme at a Glance

A2 1 Separate Granulating Efficiency for Sinter Strength and Reducibility Based A3 1 Thermodynamic Analysis of the Slag metal Reactions in Blast Furnace and B1 2 Heat recovery from low temperature off gas for use in CO 2 separation processes

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HOW A BLAST FURNACE WORKS

blast The hot blast temperature can be from 1600°F to 2300°F depending on the stove design and condition This heated air then exits the stove into the hot blast main 13 which runs up to the furnace There is a mixer line 15 connecting the cold blast main to the hot blast main that is equipped with a valve used to control

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Contributions of fly ash and ground granulated blast

 · Hydration heat evolutions and non evaporable water contents of binders and reaction degrees of fly ash and ground granulated blast furnace slag GGBS were tested to investigate the contributions of fly ash and GGBS to the early hydration heat of composite binders at 25°C and 50°C Results show that fly ash makes a very small contribution to the early …

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Integrating biomass pyrolysis with waste heat recovery

2022 English In Energy ISSN 0360 5442 E ISSN 1873 6785 Vol 149 p 792 803 Article in journal Refereed Published Abstract [en] The present study characterized a novel route biomass pyrolysis using the waste heat in high temperature slags via extending the C loops in the agricultural sector and metallurgy

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TABLE OF CONTENTS

Energy Recovery from Steelmaking By Product for Material Drying By Reza Safavi Nick Primary and Secondary Steelmaking Group Process Metallurgy Department Swerim AB SE 974 37 Luleå Sweden 1 Introduction Slag heat recovery Energy recovery from hot liquid slag is one of the underused candidates to

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Energy Efficiency Solutions by Primetals Technologies

Dry slag granulation with heat recovery Utilization of blast furnace slag heat energy 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

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Experimental Study on the Critical Characteristics of

The centrifugal atomization process of liquid by a spinning disk has been investigated by visualized experiments First the nondimensional critical equations are derived theoretically and obtained from the experimental data Accordingly a transition map is proposed to analyze the effects of operating conditions liquid flow rate Q angular speed ω and disk diameter D and …

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NOPR Waste Heat Recovery from High Temperature Blast

The waste heat boiler can produce steam obtained in the upper part of the gravity bed boiler and the heat recovery rate can reach as much as 91% As a consequence it is possible to recycle thermal energy from high temperature slag particles using a gravity bed waste heat boiler to produce steam

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