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Recovery of gold from sulfide refractory gold ore:
网页2021年4月1日A complete process of gold recovery from sulfide refractory gold ore was proposed. • The recovery efficiency of Au was increased by adding pyrite during the
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Characterization of Slags Produced During Gold Melting
网页2015年1月1日For this reason this stone is focused on the characterization of three synthetic slags. The main objective of the study is to characterize the slags: a) improve
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Energy recovery from high temperature slags
网页2011年9月1日Highlights. A comprehensive review of waste energy of slag and its recovery methods are presented. The waste heat of slags amounts to ∼220 TWh/year.
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Extraction of gold from platinum group metal (PGM) ores
网页2005年1月1日The classic process involving reduction of gold to metal from chloride solution is a simple and effective process that is well suited to batch operation. A large
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Design and Operation of Dry Slag Granulation Pilot Plant
网页2019年2月22日Experimental results on the dry slag granulator pilot plant have demonstrated that the process can effectively produce glassy slag granules from molten iron blast furnace slag, and recover significant
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ScienceDirect Experimental investigation on granulation
网页2021年2月5日The granulation characteristics, waste heat recovery and the relationship between them have not been made a profound study with different airflow velocity and
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Gold SmeltingRefining Process 911 Metallurgist
网页2016年2月28日Intensive cyanidation is a good option, but obviously, the material can be sent to the leaching process employed to treat the raw ore. Gold and silver recoveries are between 99.5 to 99.7%. Although slag
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Characterization of Slags Produced During Gold
网页2015年12月31日Procedures have been proposed to estimate the recovery of gold from a slag melt into the bottom phase without using a lead collector and the size of particles settling naturally to the bottom phase.
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Paul Wurth Slag Granulation
网页Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum. With about 300 references, it is the most popular and effective route of processing
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Design and Operation of Dry Slag Granulation Pilot
网页2019年2月22日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
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Preface for Thematic Section: Slag Granulation SpringerLink
网页2019年5月31日As a “wet” process, water granulation cannot recover high-grade waste heat from molten slags. The process consumes a large amount of water (about 1 ton of water per ton of slag is lost through evaporation) and may emit acid mist, H 2 S, and SO 2, causing serious air pollution.
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Future trend of terminal energy conservation in ScienceDirect
网页2022年1月15日Therefore, it's significant to generate smaller slag particles through granulation process for slag waste heat recovery. Because slag granulation performance has a remarkable effect on heat recovery rate, it is necessary to review granulation processes available and analyze their advantages and limitations in aspect
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Experimental study of rotating dry slag granulation unit:
网页2016年8月25日For the Dry Slag Granulation process, it is hence necessary to work with a Reynolds number larger than the higher transition value i.e., in the region where only particle formation is favored. The region where particle formation is favored is depicted in Fig. 2,Fig. 3 for two different Oh numbers 0.036 and 0.045.
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Development of Low-Emission Integrated Steelmaking Process
网页2015年2月5日Dry slag granulation (DSG) has the potential to make a fundamental change in slag treatment and deliver a more sustainable alternative compared with the conventional water granulation process. The DSG process not only saves valuable water resources and reduces sulphurous emissions, but it may also recover a large amount of
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Dry Slag Granulation: A Path to Improving the Safety and Sustainability
网页2016年8月23日Here, dry granulation processes also offer advantages including the production of by-products which hold value in both their chemical content and physical properties and heat recovery. Dry granulation, therefore, augments the methods by which slag may be valorized over traditional processing methods.
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(PDF) Slag granulation systems for blast furnaces
网页2005年1月1日As a result of extensive R&D in this area, the slag-processing technologies are slowly converging around dry granulation combined with heat recovery. In this , the slag granulation and
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A Review of Granulation Process for Blast Furnace Slag
网页process obtains a heat recovery rate of 59% and average slag particles less than 2mm.The finally slag particles are of high glassy rate (more than 95%) and cooled down to 250 . Figure 6. RCA process developed by picking. Figure 7. The semi-industrial scale (3 m in diameter) integrated heat recovery and dry granulation pilot plant at CSIRO with
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Feasibility Study for Recovering Waste Heat in the Steelmaking
网页process to recover the sensible and latent heats of molten slag at a temperature over 1773K, and to produce dry slag particles was discussed. Furthermore, the particle diameter of the granulated slag can be controlled, according to the requirement. The advantages of RCA are as follows: (1) Dry granulation of a high-viscosity fluid such as oil
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RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT FROM HIGH TEMPERATURE SLAG
网页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 hot air of 500-600°C [5].
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Future trend of terminal energy conservation in ScienceDirect
网页2022年1月15日Therefore, it's significant to generate smaller slag particles through granulation process for slag waste heat recovery. Because slag granulation performance has a remarkable effect on heat recovery rate, it is necessary to review granulation processes available and analyze their advantages and limitations in aspect
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Experimental study of rotating dry slag granulation unit:
网页2016年8月25日For the Dry Slag Granulation process, it is hence necessary to work with a Reynolds number larger than the higher transition value i.e., in the region where only particle formation is favored. The region where particle formation is favored is depicted in Fig. 2,Fig. 3 for two different Oh numbers 0.036 and 0.045.
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Development of Low-Emission Integrated Steelmaking Process
网页2015年2月5日Dry slag granulation (DSG) has the potential to make a fundamental change in slag treatment and deliver a more sustainable alternative compared with the conventional water granulation process. The DSG process not only saves valuable water resources and reduces sulphurous emissions, but it may also recover a large amount of
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Centrifugal-Granulation-Assisted thermal energy recovery
网页2022年11月1日It is noted this observation was for the slag granule of 5 mm in diameter, while most modern granulation process produces slag granules of 2–3 mm in diameter. However, it is still a daunting task to map out the temperature distribution of the small slag granule during its cooling process. Download : Download high-res image (97KB)
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Technical and Economic Evaluation of Slag Dry Granulation
网页The concept for CSIRO’s new integrated slag treatment process is based on a two-step operation involving a dry granulator and a moving bed counter-current heat exchanger 14 as shown in Figure 2.
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Slag Dry Granulation Tenova
网页Tenova developed a valorization process for the EAF and LF slag as a raw material. The process consists in the fast cooling of the liquid slag Tenova is able to assist its customers in the entire offer and design phase of the Secondary Metallurgy Slag (SMS) granulation plant to valorize as a raw Heat Recovery; Combustion Systems;
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Gold Refinery Procedures 911 Metallurgist
网页2017年4月30日The matte smelting process was extended after 1943 to include recovery of metals from the matte and slag, and forms the subject of Part II of this report. It will be noted that in the general ore treatment
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Feasibility Study for Recovering Waste Heat in the Steelmaking
网页process to recover the sensible and latent heats of molten slag at a temperature over 1773K, and to produce dry slag particles was discussed. Furthermore, the particle diameter of the granulated slag can be controlled, according to the requirement. The advantages of RCA are as follows: (1) Dry granulation of a high-viscosity fluid such as oil
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Further processing and granulation of slags with entrained metal
网页that no slag, matte, or alloy responds in similar fashion to a granulation practice. This stone addresses three issues, namely: • Water-granulation of BOF steel slag, without processing it to render it environmentally safe, physically and chemically acceptable for use by the construction industry, and the process economical
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RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT FROM HIGH TEMPERATURE SLAG
网页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 hot air of 500-600°C [5].
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