· Guo et al. [] improved the beneficiation of copper and iron by modifying the viscosity of a molten copper slag. Huang [ 20 ] found that it was beneficial for copper recovery to maintain a cooling rate of less than 3 °C/min in a temperature range of 1000 °C to 1250 °C, in order to obtain a higher copper grade in slag beneficiation.
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: T.S. Gabasiane, G. Danha, T.A. Mamvura, T. Mashifana, G. Dzinomwa · The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed
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· The main purpose of LD process is to convert the molten pig iron and steel scraps into high quality steel. In India, the generation of steel melting slag is over 2 MT per annum. The amount of steel slags from different steel
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· Copper slag is composed of iron silicate obtained by smelting copper concentrate and silica flux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix to decrease the volume of dumped slag. The molten oxidation process with crushing magnetic separation appears
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· A novel technology, modified roasting in CO–CO 2 mixed gas and magnetic separation, was presented to recover iron from copper slag. The effects of various parameters such as dosage of flux (CaO), gas flowrate of CO and CO 2, roasting temperature, roasting time, particle size of modified slag and magnetic flux density on
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· The loss of iron units in ore beneficiation is compensated for with higher savings in the EAF together with reduced consumption of slag formers. The benefit to the DR-EAF route of ore beneficiation to
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· Slag recycling and reuse – GREENY approach. The global demand for raw materials is growing exponentially with the world’s urbanization and technological progress. The growing raw materials consumption is an economical threat due to the increasing scarcity of critical materials, but also an environmental threat with increased
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· Photomicrographs of typical iron-bearing minerals textures in the slag: M—magnetite; H—maghemite; F—argillite. Fortunately , the proportion of minor magnetite in all magnetite minerals is
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· 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 it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly
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· 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).
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· Erratum to: Mechanism of Mineral Phase Reconstruction for Improving the Beneficiation of Copper and Iron from Copper Slag Erratum Published: 23 August 2016 Volume 68, page 2713, (2016) Cite this article
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· 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%. On the other hand, a mixed meso-acidophilic bacterial consortium comprised of a group of iron and/or sulfur oxidizing bacteria resulted in
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· 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
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· The experimental equipment and steps are shown in Fig. 1. 100 g of slag powder was weighed and placed in a magnesium oxide crucible.It was then placed in a muffle furnace (MoSi 2 resistance heating) at 1500 C for 90 min, cooled to 1350 C at a rate of 1 C/min and held for 90 min, cooled to 1100 C at 1 C/min, then cooled to 800 C at a
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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 minerals and to induce the growth of mineral grains. Various parameters, including binary basicity, dosage of compound additive, modification
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The utilization of laterite sulfuric acid leach residue has always been a challenge in the metallurgical industry. The current treatment involves deep-sea landfills, which leads to considerable environmental pollution and resource wastage. In this work, an effective method is proposed to recover iron and chromium from sulfuric acid leach residue. The
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This paper explores the effects of reductant, flux, reduction temperature and reduction time on the iron content and iron recovery rate of the deep reduction product from copper slag containing 41.47% of iron. Through a series of tests, it is concluded that reduction temperature and reduction time are leading influencing factors on the two
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· The contents of iron, copper, lead and zinc in copper slag are 40.21%, 0.79%, 0.24%, and 2.80%, respectively. The mineralogy of copper slag indicates that these valuable elements are difficult to recover by beneficiation
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· LD slags. Great amounts of slags from steel plants are produced through basic oxygen furnace and LD furnace. The main purpose of LD process is to convert the molten pig iron and steel scraps into high quality steel. In India, the generation of steel melting slag is over 2 MT per annum. The amount of steel slags from different steel
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· The conventional beneficiation methods cannot easily and efficiently separate the copper and iron from the copper slag due to the fine phase microstructures.[] Generally, mineral processing methods have been commonly employed for the pre-treatment of copper slag, rather than the direct recovery of metal resources from the
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Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the
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· The pyrolysis slag used in this study comes from Hunan, China, which is a solid product obtained by pyrolysis of sulfide concentrates. The main chemical components are shown in Table 1, and the XRD spectrum of the sample is shown in Fig. 1.As seen from Table 1 and Fig. 1, pyrrhotite (Fe 7 S 8) is the main iron-containing
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· The magnetic separation method is used for separating metallic iron and iron minerals. from steel slag. Commonly used magnetic machines are the cross-belt magnetic separator, drum magnetic
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· Decreasing the slag rate can lead to a lower fuel rate and higher productivity in the blast furnace (BF). Indian iron ore is known to have adverse alumina–silica ratio. Therefore, to reduce the slag rate there is a need to either remove alumina from the iron ore or to add more silica to dilute the effect of alumina in slag. The
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· The iron and slag are used for steel manufacturing and rock wool preparation, respectively. This scheme provides a Mechanism of mineral phase reconstruction for improving the beneficiation of copper and iron from copper slag JOM, 68 (2016), pp. 2341-2348,
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The results show that under the proper conditions, the copper grade of rougher copper concentrate was increased from 6.43% to 11.04%, iron recovery of magnetic separation was increased significantly from 32.40% to 63.26%, and other evaluation indexes were changed slightly, in comparison with unmodified copper slag.
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· Copper slag is a metallurgical waste that is disposed by way of stockpiling at designated dump sites within a mining site. The observed depletion of high-grade iron ores in Botswana and the environmental hazards associated with disposal of untreated metallurgical waste, presents an opportunity for research on secondary sources of iron
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The results show that under the proper conditions, the copper grade of rougher copper concentrate was increased from 6.43% to 11.04%, iron recovery of magnetic separation was increased significantly from 32.40% to 63.26%, and other evaluation indexes were
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It can also be seen in Figure10that, through the modification of molten copper slag, the total copper grade of rougher copper concentrate was increased from 6.43% to 11.04%. Meanwhile, the copper
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· The reduction roasting ammonia leaching process (RRAL) originally defined by Caron (1950) has been extensively applied to treat low grade nickel laterite and a large amount of slag-containing
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