Smelting Oxidation Desulfurization of Copper Slags
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags. Special attention is given to the effects of the holding temperature, the holding time and CaF2, CaO …
اقرأ أكثر
Comprehensive review on metallurgical recycling and cleaning of copper slag
The smelting process can be divided into three stages, namely decomposition of high-valence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig. 1).The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction potential, matte grade, smelting …
اقرأ أكثر
Experimental Study on Oxidative Desulfurization of Molten Copper Slag …
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the ...
اقرأ أكثر
Desulfurization Behavior of Copper Containing Pig Iron …
Download Citation | Desulfurization Behavior of Copper Containing Pig Iron Obtained from the Copper Smelting Slag | This article has been withdrawn at the request of the author(s) and/or editor ...
اقرأ أكثر
Removal of Sulfur from CaF2 Containing Desulfurization Slag …
The oxidation behavior of sulfur in desulfurization slag generated from the secondary steelmaking process with air has been investigated in the temperature range of 973 K to 1373 K (700 °C to 1100 °C). Although a high removal rate of sulfur is not achieved at temperatures lower than 1273 K (1000 °C) because of the formation of CaSO4, most of the …
اقرأ أكثر
Copper Slag Composite Agglomerate in Oxidation …
necessary to recycle. The copper slag is the by-product of smelting process. Copper was enmeshed in the slag with process of slagging; therefore, there is a small amount of copper in the slag. The sulfur content in the copper slag is 1.19%, which means the desulfurization must be considered in the extraction of iron from copper slag. Table 1.
اقرأ أكثر
Selective complexation leaching of copper from copper smelting slag
Semantic Scholar extracted view of "Selective complexation leaching of copper from copper smelting slag with the alkaline glycine solution: an effective recovery method of copper from secondary resource" by Yukun Huang et al. ... a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which ...
اقرأ أكثر
Experimental Study on Oxidative Desulfurization of …
the process of oxidizing copper slag first and then reducing copper slag to realize metal extraction from copper slag.[3] Several studies on the reduction and dilution mechanism of molten copper slag and desulfu-rization of copper slag have been conducted in the literature. Ueda and Roghani contributed a multiphase system of Cu-Fe-O-S-SiO 2 ...
اقرأ أكثر
Smelting chlorination method applied to removal of copper from copper slags
In order to reasonably utilize the iron resources of copper slags, the smelting chlorination process was used to remove copper from copper slags. Higher holding temperature and O2 flow rate are beneficial to increasing copper removal rate. However, the Cu2O mode is formed by the reaction of surplus O2 and CuCl with O2 flow rate increasing over 0.4 L/min, …
اقرأ أكثر
Smelting Oxidation Desulfurization of Copper Slags
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for …
اقرأ أكثر
Smelting Oxidation Desulfurization of Copper Slags
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags. Special attention is given to the effects of the holding temperature, the holding time and …
اقرأ أكثر
Moderate Dilution of Copper Slag by Natural Gas
To enable use of copper slag and extract the maximum value from the contained copper, an innovative method of reducing moderately diluted slag to smelt copper-containing antibacterial stainless steel is proposed. This work focused on moderate dilution of copper slag using natural gas. The thermodynamics of copper slag dilution and ternary phase diagrams …
اقرأ أكثر
Experimental Study on Oxidative Desulfurization of Molten …
In copper slag oxidation, we can calculate the desulfurization rate of Fe 3+ /Fe 2+, oxidant utilization rate and other parameters by detecting the residual S, TFe and FeO …
اقرأ أكثر
Investigation of effect of colemanite addition on copper …
Abstract In this study, the aim was to reduce copper losses to slag in copper production by using a boron compound, called colemanite (2CaO.3B2O3.5H2O), as flux, besides silica. In order to achieve this purpose, two different matte–slag couples were used; the flash furnace matte-slag obtained from Eti Copper Inc. (EBİ) and a master matte–slag without …
اقرأ أكثر
High-valued and deep utilization technology of copper slag
In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through XRD and chemical analysis. …
اقرأ أكثر
Recovery of Copper from Copper Smelting Slag Using a …
A new process is proposed for recovering copper from smelting slag using waste cooking oil as a green reductant. ... Smelting oxidation desulfurization of copper slags. J Iron Steel Res Int 19(12):14–20. Article CAS Google Scholar Guo Z, Zhu D, Pan J, Wu T, Zhang F (2016) Improving beneficiation of copper and iron from copper slag by ...
اقرأ أكثر
Green and efficient utilization of waste ferric-oxide …
Maweja et al. had attempt to clean the copper smelting slag from a water-jacket furnace by direct reduction (Maweja et al., 2009). ... iron oxides desulfurizer has been attracted more attention due to their low cost and high desulfurization performance (Liu et al., 2013). Concomitantly, the more and more waste ferric-oxide desulfurizer is ...
اقرأ أكثر
Comprehensive review on metallurgical recycling and …
The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction potential, matte grade, …
اقرأ أكثر
Smelting Oxidation Desulfurization of Copper Slags
Iron and copper recovery from copper slags through smelting with waste cathode carbon from aluminium electrolysis. To recover metal from copper slags, a new process …
اقرأ أكثر
Recovery of Cu-Fe Alloy from Copper Smelting Slag
Copper smelting slag usually contains 1–6 wt% copper, which can be recovered by pyrometallurgical and flotation processes. However, the tailing slags still consist of 0.3–0.7 wt% Cu and 35–45 wt% Fe equivalents to those in the copper and iron ores, respectively. Most of the research was focused on the recovery of iron from the tailing slags. Copper can increase …
اقرأ أكثر
Smelting chlorination method applied to removal of copper from copper slags
According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the ...
اقرأ أكثر
Removing sulfur dioxide from smelting flue and increasing …
However, unlike the manganese smelting and magnesium oxide manufacturing industries, there are few studies on the desulfurization about copper smelting. Therefore, it is important to develop an efficient flue gas desulfurization method for the copper smelting industry. ... Copper slag as a catalyst for mercury oxidation in coal combustion flue ...
اقرأ أكثر
The Process and Application of Oxygen-Enriched Air …
Desulfurization rate of oxidation furnace reached 99.5%. The ... smelting process. Since 1976, this process has been widely used for copper and nickel smelting in the former Soviet Union. China has conducted the improvement ... reacts strongly with oxygen to form lead alloy and slag. The heat required in the smelting process comes from the ...
اقرأ أكثر
Reduction Kinetics of Copper Slag by H2
In order to maximize the utilization value of copper slag, a process of smelting copper–iron alloy with copper slag is proposed here. The reduction kinetics of copper slag by H2 are studied in this paper. The main phases of the copper slag were Fe2SiO4 and Fe3O4. The suitable conditions of reduction were a temperature of 1373.15 K, a H2 partial pressure of …
اقرأ أكثر
Response characteristics of iron smelting reduction of copper slags
Abstract The response characteristics of iron smelting reduction of copper slags were studied in this paper. With the molten slag basicity of 1·4, the γ (FeO) takes nearly a maximum value equalling to 4·27. The diffusion of (FeO) through the molten slag boundary layer to the molten slag–iron interface is found to be the rate-limiting step for the process of (FeO) …
اقرأ أكثر
The role of slag modifiers on the selective recovery of cobalt …
DOI: 10.1016/S0892-6875(02)00090-0 Corpus ID: 98816024; The role of slag modifiers on the selective recovery of cobalt and copper from waste smelter slag @article{Banda2002TheRO, title={The role of slag modifiers on the selective recovery of cobalt and copper from waste smelter slag}, author={Wezi Banda and N. Morgan and Jacques J. Eksteen}, …
اقرأ أكثر
Desulfurization of Copper-Iron Reduced from Copper Slag
With the development of copper smelting process, strong oxidation process is put into practice. Copper matte grade is higher, and copper element in smelting slag is also higher [].At present, the most common use of copper slag is that copper slag is diluted to obtain copper matte and tailings.
اقرأ أكثر
Smelting Oxidation Desulfurization of Copper Slags
Key takeaway: 'Smelting oxidation desulfurization of copper slags effectively reduces sulfur content in molten iron, enabling lower sulfur content in smelting reduction with copper slags.'
اقرأ أكثر
Desulfurization of Cu‒Fe Alloy Obtained from Copper Slag …
Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea.
اقرأ أكثر
Microscale simulation of settler processes in copper matte smelting
For example, chemical composition of copper smelting slags has to be in a certain range to ensure that their properties are within specific limits. Disobeying these rules may lead to complications in smelting operation, poor quality of the copper products, and premature shutdown of the copper smelter. ... The highest oxidation-desulfurization ...
اقرأ أكثر