MENU
Copper slag (CS) contains a high content of valuable iron, the stockpile of CS occupies a large amount of land and leads to a waste of secondary resources. ... A green method to clean copper slag and rapidly recover copper resources via reduction-sulfurizing smelting and super-gravity separation at low temperature. 2024, Journal of …
عرض المزيد
A green method to clean copper slag and rapidly recover copper resources via reduction-sulfurizing smelting and super-gravity separation at low temperature. 2024, Journal of Hazardous Materials. Show abstract. ... Copper slag, a bulk solid waste in the copper smelting sector, has significant economic and environmental value and needs to …
عرض المزيد
A new method for continuous recovery of fine copper droplets from copper matte smelting slag via super-gravity. Zengwu Wang, Jintao Gao, +2 authors. …
عرض المزيد
Semantic Scholar extracted view of "Innovative methodology for comprehensive and harmless utilization of waste copper slag via selective reduction-magnetic separation process" by Zheng-qi Guo et al. ... A green method to clean copper slag and rapidly recover copper resources via reduction-sulfurizing smelting and super …
عرض المزيد
Conclusion According to the study on green enrichment and separation of copper and iron components from copper converter slag, the following conclusions are obtained: (1) Thermodynamic isothermal equilibrium diagram shows that the copper and iron components were individually enriched as metallic copper and magnetite phase in …
عرض المزيد
Yucel [21] reported that 90% of copper could be separated from the copper slag by a DC arc furnace process at the high temperature of 1700–1750 K for 60 min. Demetrio [22] proposed a slag cleansing method to recover copper from copper slag which took 1–10 h to settle the copper droplets in electirc furnace at the constant high …
عرض المزيد
At present, more than 80% of the global copper products are obtained by the smelting process, where the major by-products are various slags containing a broad range of almost all known elements. In this study, valuable and potentially harmful elements were recovered from mining waste using gravity separation and gravity settling.
عرض المزيد
Abstract. Copper slag can be treated as a secondary resource since it usually contains a substantial amount of copper and other valuable metals. Characterization of the slags to determine the expected metal recovery is essential for the design of separation flow sheets. In this study, the chemical and mineralogical composition of a copper slag ...
عرض المزيد
Recovery of aluminum-zinc alloy from 55%Al-Zn dross by supergravity separation. Lu Wang Zhe Wang Shuaibo Zhang K. Wei Zhancheng Guo. Materials Science, Engineering. The Review of scientific instruments. 2022. As a by-product of hot-dip 55%Al-Zn coating processing, the dross contains high levels of Al and Zn.
عرض المزيد
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 …
عرض المزيد
At the same time, copper is inert in coexistence with hematite and remains metallic state, which can be separated from iron through gravity separation. Finally, clean iron oxide, …
عرض المزيد
Gravity separation and magnetic separation methods were found to be effective for recovery of Cr from the ferrochrome slag. However it's been applied in India for safe disposal [2, 4] .
عرض المزيد
Some physical and mechanical properties of copper slag is shown in Table 2. Air-cooled copper slag has a black colour and glassy appearance. The specific gravity varies with iron content, from a low of 2.8 to as high as 3.8. The unit weight of copper slag is somewhat higher than that of conventional aggregate.
عرض المزيد
Abstract 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 …
عرض المزيد
Annually more than 400 Mt of metallurgical slags are produced worldwide [1,2,3,4,5].From the annual Cu concentrate smelter production capacity, which is equal to around 21 Mt of copper metal in 2021, it can be estimated that more than 45 Mt of CUS were produced from primary sources assuming a slag to copper ratio of 2.2 [3, 4].Only …
عرض المزيد
The results show that 97.98% Cu in copper slag can be recovered in 5 min under a high gravity field at 1250 ~ 1300 °C . However, realizing a large-scale industrial expansion of high gravity equipment will be extremely difficult. ... The typical copper slag reduction-magnetic separation process flowchart is shown in Fig. ...
عرض المزيد
In this research, super-gravity separation achieved by high temperature centrifugation was used to recover copper and zinc from waste PCBs. At an optimized temperature of 1300 °C and a gravity coefficient of 1000, the total recovery values of Cu, Zn, Pb, and Sn were 93.23%, 80.86%, 94.54%, and 97.67%, respectively, in the whole …
عرض المزيد
After cooling by the slag conveyor, the copper concentrate containing 29.44% copper and 30.39% iron and the iron concentrate containing 46.93% iron and 0.4% copper are obtained by the combined process of magnetic separation and flotation. The process flow is shown in Fig. 3 (Zhou et al., 2014). Another typical case is Finland's …
عرض المزيد
Molten oxidation is a smelting process based on oxidation reaction in a bath at temperature above 1450 °C under oxygen atmospheric environment [ 46 ]. The …
عرض المزيد
Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, silica, and alumina. ... abrasion loss of 24.1 and a specific gravity of 2.8–3.8 ... H.-Y.; Song, S.-X. Separation of silicon and iron in copper ...
عرض المزيد
In this study, valuable and potentially harmful elements were recovered from mining waste using gravity separation and gravity settling. The settling process was …
عرض المزيد
According to the movement and settling behavior of matte droplets during the reduction-sulfurizing smelting of copper slag under normal gravity within 60 min at various conditions, the recovery of matte droplets was performed via super-gravity separation at a gravity coefficient of G = 600 and a low temperature of 1200 ℃ within 3 min Fig. 9 ...
عرض المزيد
In this study, a new method was proposed to recover copper droplets continuously and efficiently from copper matte smelting slag via super-gravity. Settling behavior of copper droplets under gravity, and the directional separation of copper droplets from copper matte smelting slag enhanced by super gravity were studied.
عرض المزيد
However, increasing magnetite content is also associated with increased Cu losses, due to other mechanisms like promotion of SO 2 bubble formation when reacting …
عرض المزيد
A new method for continuous recovery of fine copper droplets from copper matte smelting slag via super-gravity. Resour. Conserv. Recycl., 182 (2022) Google Scholar ... Recovery of rutile from Ti-Bearing blast furnace slag through phase transformation and super-gravity separation for dielectric material - ScienceDirect. …
عرض المزيد
Massive copper slag containing heavy metals is produced in copper making and 0.5 - 8.0 wt% Cu is lost into it, deserving to be recovered. ... limits the sustainable utilization of the slag. In this study, a novel method of selective solidification and super-gravity separation was proposed to recover Cr resources from Cr-bearing …
عرض المزيد
The traditional methods of removing inclusions from copper melt include settling, gas purging, slag refining treatment and filtration [8,9]. Li et al. [9] removed impurity from brass alloy by slag refining treatment, the results indicated that the impurities such as Al, Pb, Fe, Ca, and Si were effectively removed by slag refining treatment ...
عرض المزيد
Consequently, in a super-gravity field, the metallic copper and copper matte were concentrated as the copper phase along the super-gravity direction, whereas the iron-rich slag migrated in the opposite direction and was quickly separated from the copper phase. Increasing the gravity coefficient (G) significantly enhanced the separation ...
عرض المزيد
The results indicated that a long time of 60 - 120 min was needed for settling of copper droplets at a high temperature of 1573 - 1673 K under the force of gravity (G = 1), while some fine droplets can hardly separate from the slag. 3.2. Directional separation of copper droplets from copper matte smelting slag via super-gravity3.2.1.
عرض المزيد
Suitable additives can improve the viscosity characteristics of copper slag, thereby improving slag–copper separation. In this study, the effects of B 2 O 3 on the performance of copper slag were studied. The results showed that when the content of B 2 O 3 addition was increased from 0 to 4%, the viscosity of the copper slag decreased, …
عرض المزيد
Rapid Separation of Copper Phase and Iron-Rich Phase From Copper Slag at Low Temperature in a Super-Gravity Field. Metall. Mater. Trans. B, 49 (2018), pp. 1165-1173, 10.1007/S11663-018-1235-6. View ... Characteristics and Mechanism of Reduction and Smelting-separation Process of Copper Slag. J. Iron Steel Res. Int., 22 (2015), pp. …
عرض المزيد
In summary, the optimum amount of sulfurizing agent was 2% of the total mass of copper slag. Effect of Reducing Agent Addition on the Separation and Recovery of Copper, Lead and Zinc. The recovery of copper by adding the reducing agent (coke) and the grade of copper in cleaned slag and copper matte is shown in Fig. 6c. Under …
عرض المزيد
This study proposed a green method to clean the copper slag and simultaneously recover copper resources via reduction-sulfurizing smelting and super-gravity separation at a low temperature, providing scientific guidance and application prospects for the synergistic treatment of hot copper slag with waste coke and gypsum.
عرض المزيد
In this study, gravity separation and gravity settling of metals were employed to recover most metals from slag, which is a by-product of the copper …
عرض المزيد
Compared with conventional gravity separators, the P2O5 recovery has been significantly increased by nearly 30%, and the P2O5 grade (7.27%) of tailings has been reduced remarkably, which is a ...
عرض المزيد
Motion behavior of copper droplets indicated that a long time of 60–120 min was needed for settling of copper droplets in copper matte smelting slag at 1573–1673 K under gravity. In contrast, copper droplets were directionally separated from copper matte smelting slag within 3–5 min at 1523–1573 K via super-gravity with a high Cu ...
عرض المزيد
Copyright © 2024 Sofol Industry & Technology Group Co., Ltd.
المنتجات
محلول
حول الولايات المتحدة
اتصل بنا