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For this purpose, the design, operational features, types, and separation mechanism of enhanced gravity separators, such as Falcon concentrator, Knelson …
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DOI: 10.1016/j.jeurceramsoc.2020.11.004 Corpus ID: 228806177; Direct preparation of magnesium borate (Mg2B2O5) ceramic from boron-bearing slag: Super-gravity separation and microwave dielectric properties
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Request PDF | On Jun 1, 2024, Jianjun Sun and others published Efficient recovery of copper from copper smelting slag by gravity separation combined with flotation | Find, read and cite all the ...
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A green method to clean copper slag and rapidly recover copper resources via reduction-sulfurizing smelting and super-gravity separation at low temperature. Zengwu Wang Jintao Gao Xi Lan ... A new approach to enriching britholite phase from the rare-earth-rich slag by super gravity was investigated. The Bayan Obo iron ore, which …
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The gold recovery from secondary resources is in the spotlight due to its high economic value and as the circular economy's main objective. As a valuable secondary source, the slag resulted from the gold-bearing electrolytic mud smelting contains up to 0.8–15 k g t−1 Au and 9–13 kg t−1 Ag, respectively. The gravity separation's use to …
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The effects of super-gravity field on metal–slag separation at different gravity coefficients were investigated in this study. In a super-gravity field, the liquid metal concentrated along the direction of super-gravity, while the molten slag migrated and aggregated along the opposite direction thereafter separated from the metal.
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The schematic shows that nonferrous metal separation and recycling can reduce heavy metal pollution, facilitate the reduction of iron oxide in copper slag for use …
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Slags coming from stainless steel (SS) and ferrochromium (FeCr) production generally contain between 1 and 10% Cr, mostly present in entrapped metallic particles (Fe–Cr alloys) and in spinel structures. To …
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The gravity separation technique involves the separation of valuable minerals from the associated gangue constituents by utilizing the differences in their specific gravity. However, there is a dearth of literature on the application of gravity concentration techniques for the treatment of Cu-slag.
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An innovative technology for the direct reduction of copper slag was studied while smelting Cu-Fe alloy by carbon to recover the main valuable elements from the …
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A new approach to enriching britholite phase from the rare-earth-rich slag by super gravity was investigated. The Bayan Obo iron ore, which was used as raw material, was reduced and melting separated to produce iron nugget and rare-earth-rich slag. Subsequently, the slag was heat-treated and enriched in the super gravity filed. …
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The effects of super-gravity field on metal–slag separation at different gravity coefficients were investigated in this study. In a super-gravity field, the liquid …
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High-purity rutile (TiO 2) possessing favorable dielectric properties was sustainably recovered from Ti-bearing blast furnace slag through phase transformation and super-gravity separation in this study. Firstly, the phase transformation behavior of Ti was studied, the favorable conditions for transformation from perovskite to rutile were …
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Molten oxidation is a smelting process based on oxidation reaction in a bath at temperature above 1450 °C under oxygen atmospheric environment [46]. The …
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A centrifugal apparatus with a heating function was designed in this paper, as depicted in Fig. 1, for accomplishing the recovery and separation of Cr-spinel crystals from Cr-bearing steel slag at high-temperature, which can reach the maximum operating temperature of 1673 K.The heating furnace and the counterweight were placed …
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Recently, super-gravity technology was reported that it could observably enhance the migration and separation of target phases, which has been successfully applied in the purification of molten metal [40], [41], the separation of valuable components from slag melts [42], [43], and the extraction of metal droplets from non-ferrous slag and …
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whilst the slag is in the molten state and grinding would not be needed. The C 2S–C 3P phase has a lower density than the remain-ing liquid slag phases, suggesting that gravity separation may be possible during cooling and solidification if enough time is spent in the temperature range where a liquid-solid "mushy zone" exists.
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In recent years, the super-gravity method was reported to use for the phase separation at high temperatures, including removal of solid inclusions in liquid metals (Li et al., 2017; Guo et al., 2019; Wen et al., 2019) and separation of precipitated phases from slag melts (Lan et al., 2019; Li et al., 2019; Gao et al., 2016), which verified that ...
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Based on the acquired condition for solid and liquid phases of rutile and slag in coexistence, recovery of rutile from the Ti-bearing blast furnace slag was carried out through super-gravity separation in the centrifugal device shown in Fig. 3. 10 g of the Ti-bearing blast furnace slag were put in the upper part of a two-layer alumina crucible ...
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As the leading industry of coal chemical industry, Coal gasification plays an important role in efficient and clean utilization of coal. It is a process in which solid fuels such as coal, coke, or semi-coke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag (Aprianti et al., …
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The gravity separation technique involves the separation of valuable minerals from the associated gangue constituents by utilizing the differences in their specific gravity. However, there is a dearth of literature on the application of gravity …
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The titanium slag mineralography and the distribution in the as received slag and the treated slag, as well as the methods of perovskite separation were studied. After treatment, the grain size is increased from 5 μm to 200 μm, the content of TiO 2 in perovskite increases from 48% to 81%, the morphology changes from snow shaped …
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Massive hazardous Cr-bearing steel slag is produced from the electric furnace smelting process of stainless steel, while the soluble poisonous hexavalent chromium (Cr(VI)) seriously limits the ...
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A green method to clean copper slag and rapidly recover copper resources via reduction-sulfurizing smelting and super-gravity separation at low temperature ... needed a higher temperature of 1350 ℃. On this basis, the matte droplets were efficiently separated from the cleaned slag via super-gravity at a low temperature of 1200 ℃ …
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This paper uses gravity separation to prepare different samples, and four typical HEs (Se/Cd/Pb/Cr) in separated products were investigated. The results showed that samples with an ash yield of 28.72%–98.86% and a specific surface area of 12.90 m 2 /g-389.51 m 2 /g were obtained through gravity separation.
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Firstly, Cr elements were selectively solidified into Cr-spinel in Cr-bearing steel slag with wt.%(MgO) = 6.00, and the high-purity Cr-spinel crystals ((Mg 0.43 Fe 0.28 Mn 0.29)(Cr 1.67 Al 0.33)O 4) were effectively recovered from the molten slag via super-gravity separation with a significant Cr 2 O 3 content of 58.08 wt% and a high Cr ...
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DOI: 10.1016/J.JALLCOM.2017.11.385 Corpus ID: 140007627; Recovery of zinc from galvanizing dross by a method of super-gravity separation @article{Wang2018RecoveryOZ, title={Recovery of zinc from galvanizing dross by a method of super-gravity separation}, author={Zhe Wang and Jintao Gao and Anjun Shi …
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Abstract Beneficiation of low-grade ore is of critical importance in order to meet the growing demand for coal and mineral industries. But, low-grade ores require fine grinding to obtain the desired liberation of valuable minerals. As a result, production of fine particles makes the beneficiation process difficult through conventional gravity …
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Copper smelting slag (CSS) is commonly generated during the smelting process of the copper concentrate, it comprises a range of valuable metals, especially the valuable copper (Cu), possessing the greatest recovery value. Currently, direct flotation is commonly used to recover Cu from CSS, but the Cu recovery rate is usually below 90%. To gain insight …
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After super-gravity separation at G = 1000 and 1473 K (1200 °C) for 3 minutes, the mass fraction of Cu in the separated copper phase reached 86.11 wt pct, while that in the separated iron-rich ...
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Initially, gravity separation was conducted to recover metallic copper from CSS, the results indicated that 87.7 wt% of metallic copper contained in the CSS could …
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Individual gravity separation is often used as an important method for the enrichment of residual carbon in coal gasification slag. Gravity separation equipment mainly includes a spiral separator (Wei et al., 2022), pulsating liquid-solid fluidized bed (Zhang et al., 2010), pneumatic separator (Ai et al., 2020), inflatable-inclined liquid-solid ...
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DOI: 10.1016/j.seppur.2022.122616 Corpus ID: 253485316; Solidification and recovery of Cr from hazardous Cr-bearing steel slag: Selective solidification, super-gravity separation and crystal characterization
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Semantic Scholar extracted view of "Effects of high gravity on dissolution of solid modifiers in molten slag" by Xinyu Zhao et al. ... Recovery of zinc from galvanizing dross by a method of super-gravity separation. Zhe Wang Jintao Gao Anjun Shi Long Meng Zhancheng Guo. Materials Science, Engineering. 2018; 41.
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This book introduces super gravity metallurgy in separation of valuable component in metallurgical slag. It collects the principle, apparatus and research for super gravity high-temperature metallurgy and the novel technology for selective crystallization and separation of various valuable components in different metallurgical slags by super …
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