Dec 01, 2013 0183 32 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 ,...

Jul 31, 2012 0183 32 On the waste heat recovery of metallurgical slag, many researchers have done research in related fields Barati, Esfahani, and Utigard 2011 Kasai et ,...

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 900 176 C Then the particles entered the packed bed ,...

Feb 22, 2019 0183 32 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 granul The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient ,...

The heat taken away by the smelting slag accounted for 2847 The results obtained from the calculation were validated with the practical data, and they were in good agreement with the statistical data In the primary copper-making process, the burning of ,...

Heat recovery from slag has gained attention of metal extraction process A direct method to r , Direct Heat Recovery Process , Metallurgical slags are the largest by-pn extraction process The total amount of metallurgic at up to 422 million tonnes contaming up to 222...

heat recovery for metallurgical slag particl Dongbei Daxue , the analysis carried out allows the identification of the main process parameters that limit the heat recovery potential from the ....

Aug 20, 2019 0183 32 Smelting, the process of extracting base metals from their natural states ores , has been used since the bronze age to create precious and useful metals Ore is decomposed in smelting with heat and a chemical reducing agent such as calcium, driving off other elements as gases or slag and leaving the metal base behind...

heat recovery technology is a popular technology, compared to water quenching granulation In the study, the solid particle diameter and size distributions of metallurgical slags with different ....

Jun 27, 2021 0183 32 On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron gt 40 wt and copper 1 to 2 wt On the other hand, solar energy, when properly concentrated, offers great potential in high-temperature process Therefore, concentrated solar power CSP could be used in the treatment of copper slag to transform fayalite into magnetite ....

However, the waste heat recovery rate in China is less than 2 thus there is a great potential of waste heat recovery In this study, we investigated a chemical method to extract the waste heat from high temperature blast furnace slags, ie, sludge gasification Sewage sludge, another substantial waste produced in the municipal system, need ....

Fig 1 Conceptual diagram of waste heat recovery mode in CSIRO packed bed g 0 189 400 500 0 t y r r Fig 2 Waste heat recovery scheme of packed bed in POSCO IRON MAKING IN KOREA Figure 3 shown the process flow chart of slag waste heat recovery developed by JFE in 2011 4 The device used drum granulation technology to treat molten slag...

K├╝ttner supplies metallurgical treatment stations for hot metal, steel and non-ferrous melts The technology of choice is injection of solid reagents into the liquid metal This serves for a variety of different metallurgical tasks, such as Desiliconization, Dephosphorization, Desulphurization or in combination triple D Depending in the task ....

Metallurgical process for valuable elements recovery from red , development of a green recovery process with environme ntal benignity, low energy requirements and cost , Steel making slag additive Civil building construction Waste water treatment Ceramics, plastics, coatings...

May 07, 2018 0183 32 Steelmaking plants continuously strive to reduce the environmental load in the steelmaking process, resulting in the recycling of energy, water, and other byproducts In this chapter, techniques for the treatment and recycling of metallurgical slags are described Metallurgical slags are considered secondary raw materials and are used or added during the process to improve ,...

A process for recovering energy from substances having a high temperature, in particular for recovering energy from molten slag material obtained in metallurgical processes, the heat being emitted by said substances by radiation, being recovered in regions, positioned at ,...

Abstract summary Value recovery from waste products in metal processing operations is a growing field in metallurgy A computer model was developed to assess the feasibility of simultaneous granulation and heat recovery from molten slag, and an experimental study was carried out to analyse the properties of solidified slag sampl...

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 ....

We think outside the box and use our many years of expertise in the ferrous and energy industry to create individual systems for the non-ferrous industry with our interdisciplinary team 1 First SBF lead slag reduction plant in Europe at Weser-Metall Germany D 1 Brownfield integration projects parallel to running operations...

Nov 12, 2015 0183 32 Li, P, Yu, Q, Xie, H, Qin, Q Wang, K CO2 gasification rate analysis of Datong coal using slag granules as heat carrier for heat recovery from ,...

Development of Molten Slag Dry Granulation and Heat Recovery in Steel Industry The difficulties of molten metallurgical slag including blast furnace slag and steel slag,etc heat recovery caused by low thermal conductivity and high enthalpy are analyzedThe processes of molten slag dry granulation combined heat recovery by physical means ....

Jun 24, 2021 0183 32 The general concept behind the process is the dry recovery of thermal energy of metallurgical slags via indirect cooling and energy capture with water or thermal oil The application of the concept is further shown in the example of blast furnace slag BFS The concept Fig 2 comprises 5 parts 1 slag tundish, 2 primary heat exchanger ....

Nov 03, 2021 0183 32 The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed In order to satisfy these factors, a new technology for hydro-vacuum granulation of slag melts HVG has been developed It is shown that the main advantage of the proposed HVG process is the provision of forced high-speed ,...

Sep 29, 2021 0183 32 The operation of adjusting the composition of liquid titanium alloy in the process of making titanium rod is called alloying The alloying of titanium rod made by traditional electric furnace in metallurgical engineering is generally carried out in the late oxidation and early recovery stage, and the alloy composition is fine-tuned in the late recovery stage, before titanium extraction or ....

One such activity is the commitment to energy recovery from by-products such as slag since the average energy content of ferrous slags is around 1 to 2 GJ/t slag The recovered energy could, then, be used in heating or drying process among others The RecHeat was designed and modelled iteratively to achieve an optimised heat recovery apparatus...

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 ....

Sep 06, 2021 0183 32 Liu et al proposed a gravity bed waste heat boiler with steam generation for recovering waste heat from high-temperature metallurgical slag particl Summary of various heat recovery technologies and their usability can be found in article by Jouhara et al He and his team conducted research focusing on the operation and performance of ....

Heat recovery from blast furnace slags is often contradicted by another requirement, to generate amorphous slag for its use in cement production As both the rate and extent of heat recovery and slag structure are determined by its cooling rate, a relation between the crystallization...

Feb 03, 2021 0183 32 Recovery of copper in concentrates from slags cooled in the induction furnace and ground for 30 minutes ranged from 871 to 962 percent with the best recovery obtained on the highest grade slag sample Copper content of the flotation tailings, which is the most important indicator, ranged from 026 to 039 percent...

During steel production, the impurities in the hot metal react with the fluxes forming the steel slag Chemical constituents of this steel slag SS are relevant to iron/steelmaking or blended cement manufacture Harmful impurities present in it, however, limit its recycling to these applications Japan, Europe, and the US consume a significant amount of their SS, but more than 50 end up in ....