JC Jaw Crusher is a new generation product successfully developed by our company by introducing international advanced technology and research results.
AF Impact Crusher is optimized and designed by our company after absorbing advanced technology at home and abroad. It is a new type of two-stage medium and fine crushing equipment.
DPX Fine Crusher is characterized by a large crushing ratio, which can crush a large piece of raw ore to meet the grain size of the mill, which can save 45% of the one-time investment and reduce the cost of ore crushing by about 40%.
PCX Sand Making Machine is a high-efficiency and energy-saving fine crushing, coarse grinding and sand making equipment.
PF Impact Crusher is a crushing machine that uses impact energy to crush materials.
XHP Multi Cylinder Cone Crusher is mainly used for secondary crushing and tertiary crushing in metal mines and construction sandstone processing.
YM Pre Grinding Machine is a new type of fine crushing, coarse grinding and sand making products developed by optimizing the main technical parameters.
Ladder Sieve is a multi-layer, new high-efficiency vibrating screen, which is specially designed for screening materials in quarries.
WebThe formation of slag, which floats on the surface of the molten steel, is an important part of steelmaking. Slag usually consists of metal oxides and acts as a destination for oxidized impurities. It functions as a thermal blanket, stopping excessive heat loss, and helping to reduce erosion of the refractory lining.
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Web17.3.3 Recovery of Valuables. In particular, slag from metallurgical processes contains useful components that can be recovered. Manganese, silica, magnesia, alumina and niobium of steelmaking slag, and nickel and cobalt of copper slag, are examples of recoverable metals in by-products (Ramachandra Rao, 2006). Steelmaking slag could
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WebNov 16, 2020 Tobo, et al. proposed a unique process of slag waste heat recovery. The sensible heat of the sheet-shaped slag was recovered by a counter-flow packed bed type heat exchanger and showed that the heat recovery ratio is over 30%. Motz, et al. carried out research on dry solidification with heat recovery of ferrous slag. They reported that
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WebFeb 1, 2014 and waste heat recovery system for metallurgical slag. In the work ... the rotary granulating disk in waste heat recovery process of molten slag, Appl. Therm. Eng. 63 (2014) 387395.
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WebEnergies 2022, 15, 9223 3 of 15 Figure 1. Metallurgical slag granulation and waste heat recovery technology system. The characteristics of the sludge gasification reaction with CO2 as an oxidation ...
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WebDec 5, 2022 Waste heat recovery is a key problem to be solved for metallurgical slag. Furthermore, the heat source is a current bottleneck for sewage sludge gasification technology. At present, there is no complete process system for the thermochemical conversion of sludge driven by metallurgical slag waste heat. To recover the waste
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WebSep 1, 2011 Metallurgical slags are conventionally divided into ferrous and nonferrous, 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
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WebOct 30, 2008 PC scrap feeding to Zinc Fuming process (11 mixture with crushed revert slag) Almost complete recovery of copper and precious metals in the Zinc Fuming process. 35 Plastics was tested as reducing agent and fuel Copper and precious metals following the copper collector to be recovered to the copper smelter.
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WebJun 25, 2016 The cold nitrogen took away the waste heat of slag particles and entered into waste heat boiler 7. Maruoka et al. proposed a system for sensible heat recovery from slag particles by an endothermic chemical reaction 8. In the system, molten slag was first granulated by rotary cup and the high-temperature slag particles were poured into a ...
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WebIron Bearing Metallurgical Slag as Heat Carrier Characteristics and ... process, whereby about 2.2 tons of slag can be produced for every ton of Cu or Ni 16. ... Slag waste heat recovery
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Webarticleosti_6500573, title Apparatus for heat recovery from molten slag, author Fujii, H and Fujita, T and Hashizume, S and Katayama, H and Nakamura, M and Okuno, R and Tanaka, K, abstractNote Molten slag fresh from a smelting or refining furnace is ladled into a pan on a wheeled carriage and is thereby transported to a first heat
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WebWaste heat recovery is a key problem to be solved for metallurgical slag. Furthermore, the heat source is a current bottleneck for sewage sludge gasification technology.
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Webtion and waste heat recovery technology, which is a popular tech- nology, compared to water quenching granulation 13. In generally, metallurgical slags are rich in silica (SiO
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WebMar 3, 2020 Zuotai Zhang. High temperature slags carry a substantial amount of high quality thermal energy (up to 1550 C), and represent the largest undeveloped energy sources in steel industry. However, the ...
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Weband 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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WebJul 20, 2021 The steel industry, in accordance with the momentum of greener industry, has welcomed the changes and is actively pursuing that objective. 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/tslag. The recovered energy could, then, be
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WebMay 1, 2021 The metallurgical treatment of vanadium bearing slag has been conducted through the roasted-assisted leaching process on industrial scale, but the main problems that remain to be addressed are moderate vanadium recovery rate, high energy consumption, release of harmful gases such as CO 2, SO 2 and Cl 2, low degree of
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WebApr 1, 2018 The heat recovery steam generator (HRSG) is a complex system used. heater, economiser and steam drum, which are very large in size. By. system can also recover the waste heat from the exhaust of ...
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WebJun 1, 2016 Liu et al. 14 investigated the molten slag granulation for waste heat recovery from various metallurgical slags including BF slag. In the paper, physical simulation of molten slag granulation by ...
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WebOct 1, 2012 The cooling process of slag is the main reason for generation of different types of slags required for various purposes. This slag has a worldwide average recovery rate from over 80% (steelmaking ...
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WebMay 15, 2012 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. ... Cascade recovery of slag waste heat was realized by using ...
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WebFeb 12, 2023 Figures 1 and 2 show material and energy block flow diagrams of a typical double contact and single contact metallurgical gas acid plant, respectively. SO 2 bearing gas stream leaves smelter / roaster at temperatures exceeding 1000 C. This gas is cooled to about 350 C in a waste heat boiler to recover heat as high-pressure steam up to 66
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WebWe 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
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WebFeb 5, 2014 Integration consideration of end-point reproductions like molten slag waste heat high-efficiently recovery and resourceful disposal has a significant influence on establishing more economical and environmental wastes circular network system, due to 0.75billiontonne metallurgical slag with nearly 1500 C is produced annually,
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WebJan 1, 2016 Yu, et al. 188 reviewed the granulation process for blast furnace slag. They reported that for every pig iron production accompanied by 0.3-0.6 tons of blast furnace slag produced with the ...
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WebMetallurgical 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 slag granulation and heat recovery options are reviewed ...
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WebJun 23, 2021 The specific gravity of slag ranges between 3 and 4 as compared to 5.5 for sulfide matte and 78 for iron and steel. The slag cover protects the metal and matte from oxidation and prevents heat losses due to its poor thermal conductivity. In an electric furnace, slag may be employed as a heat resistor.
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WebNov 18, 2020 Cita on Okorie O (2020) High Temperature Rheological Characteris cs of Iron and Steel Making Slag and its Waste Heat Recovery-A Review. Adv Metallurg Mater Eng 3(1)104-116 Okorie.
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WebThe terms blast furnace slag (BFS) and granulated blast furnace slag, as well as LD slag and electric furnace slag are used for finer distinctions. With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron.
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Webfunction 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 countercurrent air flow
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WebThe invention discloses a kind of metallurgical slag waste-heat recovery devices, including first base and motor housing, the top of the first base is connected with motor housing, bottom end is connected with motor on the left of the inner cavity of the motor housing, motor shaft is installed on the right side of the motor, the outer wall of the motor
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WebJun 14, 2018 Thermal energy recovery of pyrometallurgy slags is a worldwide problem that is widely concerned for decades. As chemical recovery method, molten slag cascade recovery method (MS-WHCR) is proposed in this work. As typical endothermic chemical reactions, pyrolysis, gasification, calcination and reforming reactions are applied in this
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WebSep 1, 2010 Show full abstract submerged arc furnace aiming at the recovery of zinc and lead and production of a useable slag is being investigated at the IME Process Metallurgy and Metal Recycling in a ...
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WebThe invention discloses a kind of metallurgical slag waste-heat recovery devices, its structure includes metallurgical slag tank, gas collection tank, hot-water collection tank, water pipe, gas concentration unit and attemperator, water pipe is distributed in the side of the metallurgical slag tank, the top of the water pipe is equipped with cooling water
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WebApr 8, 2018 It is often termed salt cake or salt slag and contains 57% of residual metallic aluminum, 1530% aluminum oxide, 3055% sodium chloride, 1530% potassium chloride and ...
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WebMar 24, 2023 SMS group GmbH, a leading plant manufacturer in the field of metallurgical technology, the Institute for Metallurgical Process Technology and Metal Recycling of RWTH Aachen University, the Department of Mining Engineering at the Universidad de Chile, and Aurubis AG in Hamburg have developed a new type of slag-cleaning concept
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WebSep 1, 2021 The slags are an important waste and by-products of metallurgical industry. The present paper summarizes results obtained from physical and chemical analyses on metallurgical slag provided from S ...
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WebUndreamt of metallurgical treasures. 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
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WebNov 1, 2019 As a valuable byproduct of the iron-making process, blast furnace slag with temperature up to 14501650 C contains a tremendous amount of sensible heat. Dry granulation and waste heat recovery via a moving bed is an attractive alternative to the conventional water quenching method due to energy-savings and the reduction in water
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WebThe air granulation process allows for the concomitant rapid cooling of slag and heat recovery from the air blast via a heat exchanger. (3) Granulation by solid slag impingement, where the liquid stream is broken up into particles by a stream of recycled solid slag particles, and the energy is transferred to air for steam generation by ...
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WebForced air granulation of secondary metallurgical slag. TenarisDalmine conducted industrial tests to recover CaO (lime), which represents approximately 55% of the total SMS slag stream.The industrial process, developed and designed with Tenova, consists in the fast cooling of the liquid SMS slag mixed with residual steel by forced air stream during
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WebThe invention relates to a metallurgical slag waste heat recovery and utilization technology, comprising the following steps of transporting slag pots to a waste heat recovery device with the temperature of the pot top being within 1000-1600 DEG C, sending room temperature water processed by a circulating pump into the waste heat recovery
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WebJul 31, 2012 The feasibility of the waste heat-recovery system was verified by dry granulation and pyrolyzation experiments. The energy of hot BF slag could be converted to chemical energy through the ...
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WebJan 1, 2007 The heat recovery from high temperature slags (14501650 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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WebPDF On Oct 1, 2012, Sharif Jahanshahi and others published Current status and future direction of CSIROs dry slag granulation process with waste heat recovery Find, read and cite all the ...
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WebApr 2, 2012 These parameters include bell less charging system, use of agglomerates, coal injection, hot blast temperature, coke rate, stove waste gas heat recovery, and high top pressure. The slag volume represents loss of material and energy both. This is dependent on quality of coke and ore used in the furnace. The Indian slag practice is
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WebJul 28, 2021 Abstract. Fluorite is widely employed as a fluxing agent in metallurgical processes, inevitably leading to severe pollution. In this study, to promote the development of sustainable metallurgy, B 2 O 3 is used as a fluxing agent of CaOSiO 2 MgOAl 2 O 3 TiO 2 Cr 2 O 3 slag, acting as a replacement for CaF 2.The effect of B 2 O 3 on the
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WebThe efficiency of the recovery phase depends on both temperature conditions and the composition slag, and introduced additions. The exploration of the possibility and feasibility of the liquid-phase restoration for steelmaking waste slag of the Zlatoust Metallurgical Plant applying the induction heat installation is the aim of this study.
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