Relationship between copper content of slag and matte in …
In the newly developed oxygen-enriched bottom-blowing copper smelting process (also known as the SKS copper smelting process), Cu loss in slag is one of the most concerning issues. This paper presents our research results concerning the relationship between the Cu content of the matte and slag in the SKS process; the …
A comprehensive review on the recovery of copper …
The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed …
Iron and copper recovery from copper slags through smelting …
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one hazardous waste (waste cathode carbon) was used to treat another (copper slags). The waste cathode carbon is used not only as a reducing agent but also as a fluxing agent to …
Research on Comprehensive Recovery and Harmless …
Research on Comprehensive Recovery and Harmless Treatment Process of Copper Smelting Slag. January 2019. DOI: 10.1007/978-3-030-05955-2_70. In book: …
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 …
Sustainable and Comprehensive Utilization of Copper Slag: …
Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …
Characterization of copper slag for beneficiation of iron and copper
Our characterization results show that this BCL copper slag is a good secondary source of base metals, especially iron and copper. These results reveal that the elemental proportion of iron was around 35.4%. Literature states that an iron grade that is considered viable for economic beneficiation should be at least 25% and this slag has …
Thermodynamic analysis and process optimization of zinc …
The elemental content of the copper smelting slag was analyzed using an inductively coupled plasma emission spectrometer (ICP-OES), and the results are given in Table 1. The Zn and Pb contents were 2.80 and 0.45 wt.%, respectively. The phase composition of the copper smelting slag was determined using X-ray diffraction (XRD).
Copper Slag Beneficiation Process & Equipment
Compared with returning slag to smelting, ferric oxide, and some impurities can be removed from the process, and the amount of quartz used in the smelting and blowing process will be greatly reduced. The copper flotation recovery rate is generally above 90%, the copper concentrate grade is greater than 20%, and the tailings contain 0.3% to 0.5% ...
Improving Beneficiation of Copper and Iron …
In the paper, a new technology was developed to improve the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the mineralization of valuable …
Extraction of copper from copper slag: Mineralogical
Physical beneficiation of the feed slag (~0.6% Cu) in a 2 L working volume flotation cell using sodium isopropyl xanthate resulted in Cu beneficiation up to 2-4% and final recovery within 42-46% ...
Chemical composition of the copper slag (wt%)
Copper smelting slag is the largest solid waste produced in copper-making process, and slow cooling beneficiation technology is the most widely used method in recovering remaining treasures from ...
A comprehensive review on the recovery of copper values from copper slag
The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed thoroughly. ... Copper metal is produced from these ores following a pyrometallurgical route of smelting or converting. This process results in the generation of vast quantities of ...
How to Process Copper Ore: Beneficiation Methods and Equipment
Before the beneficiation of copper ores, crushing and grinding are required. The bulk ores are crushed to about 12cm by a jaw crusher or a cone crusher. Then the crushed materials are sent to the grinding equipment, and the final particle size of the copper ore is reduced to 0.15-0.2mm. Copper ore crushing process. 1.
Beneficiation (Metallurgy)
Generally, this process is a reduction of the metal oxide with carbon, sulfur, sulfide in a suitable furnace; for example, reverberatory, blast furnace, flash, or electric furnace. During smelting, fluxing materials are added to form a slag. The smelting process for metal extraction can be expressed as.
The Recovery of Copper from Smelting Slag by Flotation Process
Copper smelting slag is the largest solid waste produced in copper-making process, and slow cooling beneficiation technology is the most widely used method in recovering remaining treasures from ...
Innovative methodology for comprehensive and harmless …
Unfortunately, it is very difficult to extract iron from copper slag by traditional physical separation processes because the iron mainly exists as the form of fayalite in the copper slag. Nickel laterite, as one kind of complex and refractory ores, is also not easy to upgrade by physical beneficiation process (Li et al., 2018).
Synergistic recovery of copper, lead and zinc via sulfurization
Fe3O4 in the slag was reduced from 19.50% to 2.97%. Key words: copper smelting slag; copper recovery; lead and zinc fuming; sulfurizing agent 1 Introduction Copper is an essential primary material, and the pyrometallurgical process produces 80%âˆ'90% copper [1âˆ'4].
Mineralogical and morphological factors affecting the …
Copper smelting slag is the largest solid waste produced in copper-making process, and slow cooling beneficiation technology is the most widely used method in recovering remaining treasures from the … Expand
Characterization of copper slag for beneficiation of iron and copper …
Our characterization results show that this BCL copper slag is a good secondary source of base metals, especially iron and copper. These results reveal that the elemental proportion of iron was around 35.4%. Literature states that an iron grade that is considered viable for economic beneficiation should be at least 25% and this slag has …
A Review of Comprehensive Utilization of Copper …
Copper slag. Energy saving. Utilization. Copper recovery technologies. Introduction. Copper smelting methods mainly include pyrometallurgical process and …
Improving Beneficiation of Copper and Iron from …
In the paper, a new technology was developed to improve the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the …
Slag Metallurgy and Metallurgical Waste Recycling | JOM
In another article, entitled "Effects of Some Additives on Copper Losses to Matte Smelting Slag," the same group of authors evaluated the effects of CaO and B 2 O 3 additions on copper losses to slag and compared the results with those of calcined colemanite addition. The results of matte-slag-flux at 1250°C under nitrogen atmosphere …
Recovery of iron from copper slag by deep reduction and
Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully …
Mineralogical and morphological factors affecting the
Separating copper and arsenic has always been a major problem in the copper slag flotation process, which influences copper slag utilization and the environmental safety. A comparative study of flash smelting furnace (FSF) slag and its flotation products (concentrate and tailing) reveals the factors …
Extraction and separation of copper and iron from copper smelting slag
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 …
TENORM: Copper Mining and Production Wastes | US EPA
Smelting: Then, copper concentrates are mixed with silica (sand) and limestone and heated in a furnace to form two naturally-separating layers. One layer is a waste containing iron and silica compounds and is discarded as slag slag Byproduct left after a desired metal is thermally separated from its raw ore. .
Comprehensive recovery of zinc, iron and copper from copper slag …
In this study, a novel method to recover copper, zinc and iron from copper slag by SO 2 –O 2 roasting-leaching-magnetic separation was proposed. The effect of roasting experiment conditions were roasting temperature of 900 °C, holding time of 120 min, and φ SO2 (The volume fraction of SO 2 in the mixed gas of SO 2 and O 2) of …
An efficient approach to utilize copper smelting slag: …
Abstract. Over 50 million tons of copper slag are produced worldwide annually. Stacking is currently the primary method used to treat copper slag, resulting in …
Review on Comprehensive Recovery Valuable Metals and
Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because ...
