heat recovery metallurgical process slag
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heat recovery metallurgical process slag

Granulation and Heat Recovery from Metallurgical Slags ...

2019-12-9  Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year of coal. The potential mineral and

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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 recovered, and ...

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(PDF) Heat Recovery from Slag through Dry Granulation

The heat recovery from high temperature slags (1450–1650 °C) from the metallurgical process represents one of the greatest potential to reduce the carbon emission in the

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Development of molten slag dry granulation and heat ...

The heat recovery from high temperature slags (1450–1650 °C) from the metallurgical process represents one of the greatest potential to reduce the carbon emission in the steel industry (460 ...

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Energy recovery from high temperature slags - ScienceDirect

2011-9-1  Metallurgical slags are conventionally divided into ferrous and non–ferrous, based on the metal produced in each process. The typical chemical composition and generation rate of various slags for the major metal manufacturing processes are provided in Table 1, Table 2.As seen, the relative amount of slag produced per ton of iron/steel is lower than the non-ferrous operations.

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(PDF) Energy recovery from high temperature slags

Controlled slag cooling process gives a good opportunity for heat recovery as hot air or steam [51] [52] [53][54][55][56][57]. When producing amorphous slag as a substitute to cement dry ...

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A review of waste heat recovery technologies towards ...

2013-12-1  High-temperature waste heat from the iron and steel industry, as shown in Fig. 1, are mainly stored in products, molten slag and waste gas .Molten slag, as a kind of by-product during the steelmaking process, is exhausted in extremely high temperature and thus, it carries a great deal of high-grade heat accounting for 10% of waste energy in steel industry and 35% of high-temperature waste

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Silicon recovery from metallurgical-grade silicon refined ...

2021-11-3  In this process, the ratio of slag to silicon was 1:1, so that a large amount of slag agent was needed. Meanwhile, the smelting process for silicon recovery from the slag incurs high energy consumption. In addition, a large amount of slag flux must be

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Metallurgical process for valuable elements recovery

2020-1-3  Metallurgical process for valuable elements recovery from red ... development of a green recovery process with environme ntal benignity, low energy requirements and cost. ... Steel makingslag additive Civilbuilding construction Wastewater treatment Ceramics, plastics, coatings

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Integration of waste biomass thermal processing

2021-9-6  Abstract The article presents innovative technology which integrates a metallurgical pusher-type furnace with a waste heat recovery system that consisted of a reactor for torrefaction and pyrolysis of waste biomass. The technology is designed for utilizing both liquefied and gaseous by-products (torgas, pyrolysis gas and condensate denoted as TPC) obtained from torrefaction and pyrolysis of ...

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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 recovered, and ...

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Applied Thermal Engineering - ResearchGate

and waste heat recovery system for metallurgical slag. In the work ... packed bed of slag particles [9]. In this process, the extent of methane conversion could reach a maximum of 96%. Liu et al.

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Development of molten slag dry granulation and heat ...

The heat recovery from high temperature slags (1450–1650 °C) from the metallurgical process represents one of the greatest potential to reduce the carbon emission in the steel industry (460 ...

More

(PDF) Energy recovery from high temperature slags

Controlled slag cooling process gives a good opportunity for heat recovery as hot air or steam [51] [52] [53][54][55][56][57]. When producing amorphous slag as a substitute to cement dry ...

More

US4147332A - Method for recovering heat from molten

Molten slag discharged from a metallurgical furnace and flowing down from a slag trough is atomized by air jet into a primary heat-exchanger of rotary cylindrical type and hot slag granules thus obtained and air are caused to pass in a co-current therethrough so as to exchange the heat of the slag to the air flow to obtain a primary hot blast, then the hot slag granules discharged from the ...

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Current Development of Slag Valorisation in China ...

2014-2-19  Slags are byproducts of the metallurgical industry. It is of importance to recycle materials and recover heat from metallurgical slags to reduce the energy consumption and environmental impact of steel industry. China is the largest iron- and steelmaking slag producer in the world, and intensive efforts have been made during last decades for slag valorisation, including industrial facility ...

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Energies Free Full-Text Heat Recovery from High ...

Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy consumption and CO2 emissions of the steel industry. The molten slags, in the temperature range of 1723–1923 K, carry large amounts of high quality energy. However, the heat recovery from slags faces several fundamental challenges, including their low thermal conductivity ...

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RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT

2020-2-27  waste heat recovery process of liquid slag into dry centrifugal granulation process and waste heat recovery process. After dry centrifugal granulation, the temperature of blast furnace slag particles was about 900°C. Then the particles entered the packed bed for heat transfer, resulting in

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Design and Operation of Dry Slag Granulation Pilot Plant ...

2019-2-22  CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are

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Metallurgical process for valuable elements recovery

2020-1-3  Metallurgical process for valuable elements recovery from red ... development of a green recovery process with environme ntal benignity, low energy requirements and cost. ... Steel makingslag additive Civilbuilding construction Wastewater treatment Ceramics, plastics, coatings

More

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 recovered, and ...

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Metallurgical Processing Strategies for Metals Recovery ...

Slag produced as a byproduct in industrial processes, contains considerable metals contents, which need to be recovered to avoid environmental contamination. In present review, the types, applications, recovery of metals from slag and their hazardous effects have been discussed. Gravimetric, magnetic, floatation, pyrometallurgical and hydrometallurgical treatments are discussed for processing ...

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RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT

2020-2-27  waste heat recovery process of liquid slag into dry centrifugal granulation process and waste heat recovery process. After dry centrifugal granulation, the temperature of blast furnace slag particles was about 900°C. Then the particles entered the packed bed for heat transfer, resulting in

More

Development of molten slag dry granulation and heat ...

The heat recovery from high temperature slags (1450–1650 °C) from the metallurgical process represents one of the greatest potential to reduce the carbon emission in the steel industry (460 ...

More

Metallurgical process for valuable elements recovery

2020-1-3  Review Metallurgical process for valuable elements recovery from red mud—A review Zhaobo Liu, Hongxu Li⁎ School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

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Applied Thermal Engineering - ResearchGate

and waste heat recovery system for metallurgical slag. In the work ... packed bed of slag particles [9]. In this process, the extent of methane conversion could reach a maximum of 96%. Liu et al.

More

Pyrometallurgy Towards Clean Metallurgical Processing

2016-2-13  function of granule size and desired heat recovery tions of a direct heat recovery process. As the first ture of air and falling slag droplets has been lg equations are discussed in the following sections. [CAL MODEL I using a rotating disk or cup is considered. The slag ;sel/duct. While falling, the counter—current air flow

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Some Fundamental Aspects of Dry Slag Granulation

2014-7-8  heat from the slag and the process has not gone beyond piloting stage. Two recent reviews [10,11] of alternative approaches to dry granulation of slags and heat recovery have shown some of the challenges involved and the current status of the technologies under development.

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Slag and dross Non-Ferrous Kuettner Group

Slag and dross, which occur in significant amounts in every metallurgical process, have a very bad reputation as partially hazardous residues. Often rightly so, since the high heavy metal content does not allow its use as a mineral product. Only the slags, which have special standards and pass eluate tests, can today be used as building ...

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Electromagnetic separation of silicon from metallurgical ...

The recovery of silicon from metallurgical-grade silicon refined slag (MGSRS) is of great significance for improving the utilization of silicon resources and increasing production profits.

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