Beneficiation of iron ores is an increasingly important topic, as a result of diminishing reserves of high-grade ores, and the increasing prevalence of mining wetter ores from below the water table. Meanwhile, steelmaking companies globally are committing to decarbonise their processes, so there is increasing interest in fossil-free …
When the iron content in the iron concentrate recovered from zinc kiln slag reaches the minimum standard (T Fe ≥ 55%) of "GB/T 25953-2010 Recovery of iron concentrates by beneficiation of nonferrous metals", enterprises usually sell the qualified iron concentrate to the iron works for the use of ore proportioning, or sell the …
1. Introduction. China is the world's largest producer of crude steel (World Steel Association, 2021), accounting for more than 50% of global output.As one of the typical solid wastes in the iron and steel industry, the emission of BOF slag is also huge, including 89.66 million tons in 2021 (He et al., 2022a).Impressively, there are significant …
Finally, this beneficiation plant obtained the 49% mixed concentrate and a high recovery rate of more than 90%. Hematite beneficiation plant in India The hematite ore processed by a beneficiation plant in India has an uneven grain size and gangue minerals as quartz. It adopted a combined process of stage grinding and gravity …
Beneficiation of iron ores is an increasingly important topic, as a result of diminishing reserves of high-grade ores, and the increasing prevalence of mining wetter ores from below the water table. ... and fuel (coke) required for melting and separation of the gangue (as molten 'slag') in the blast furnace [1]. Iron ore beneficiation ...
The quality of Indian iron ore resources is generally good with high iron content and high percentage of lumpy ore. More than 85% of the hematite ore reserves are of medium- to high-grade (+62% Fe) and are directly used in blast furnace and in direct-reduced iron (DRI) plants in the form of sized lump ore, agglomerated sinter, 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 ...
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 …
Abstract. Read online. 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 …
Slag cooling beneficiation, which uses the surface property differences of sulfide minerals and oxide minerals to enrich valuable elements in the slag concentrate, is the most widely used method ...
The mineral phases of iron in slag are listed in Table 2. Iron mainly exists in the form of magnetite accounting for 75.75% total iron content, which can be enriched by traditional magnetic separation process. ... "Mineralogical Characteristics and Preliminary Beneficiation of Nickel Slag from Reduction Roasting-Ammonia Leaching" Minerals …
The iron in the copper slag mainly exists in the iron olivine phase. Due to the high content of SiO 2 in the slag, it cannot be directly used in the traditional blast furnace process, and because of the close interlocking of the minerals, it is difficult to separate gangue by traditional beneficiation method to produce iron concentrate ...
DOI: 10.3390/MET6040086 Corpus ID: 14713485; Improving Beneficiation of Copper and Iron from Copper Slag by Modifying the Molten Copper Slag @inproceedings{Guo2016ImprovingBO, title={Improving Beneficiation of Copper and Iron from Copper Slag by Modifying the Molten Copper Slag}, author={Zheng-qi Guo and …
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 …
DOI: 10.1016/j.heliyon.2021.e06757 Corpus ID: 233425660; Characterization of copper slag for beneficiation of iron and copper @article{Gabasiane2021CharacterizationOC ...
Abstract— Ash and slag waste (ASW) from coal-fired thermal power plants (TPPs), the amounts of which make several tens or even hundreds of millions of tons per annum, require allocation of large land areas for storing them. This waste is a source of pollution emitted into the atmosphere and it poisons the aqueous medium and soil. Ash …
A study of copper slag smelting indicates that there is value in characterizing copper slag with view of recovery of viable metals, especially iron. Analysis from the results showed that nickel, iron and copper existed in high amounts in the slag with these …
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 …
Flotation is the dominant beneficiation method at present, which mainly aims at utilizing the residual copper in the slag (Zhou et al., 2021; Piatak and Parsons, 2015).However, in order to float out copper sulfide encapsulated in fayalite, a large amount of energy is required to fully grind the copper slag, while other valuable elements are not …
The iron resources in nickel slag were recycled by oxidation and magnetic separation. The effects of holding time, temperature, air flow rate and basicity on the crystallization of magnetite were investigated systematically. Moreover, the influence of particle size and magnetic flux density on the recovery and grade of iron during the magnetic separation …
To maximize the recovery of iron and copper from copper slag, the modification process by adding a compound additive (a mixture of hematite, pyrite and manganous oxide) and optimizing the cooling of the slag was studied. The phase reconstruction mechanism of the slag modification process was revealed by …
A novel technology, modified roasting in CO–CO2 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 CO2, roasting temperature, roasting time, particle size of modified slag and magnetic flux density on …
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 …
Guo ZQ, Zhu DQ, Pan J et al (2016) Improving beneficiation of copper and iron from copper slag by modifying the molten copper slag. Metals 6(4):86. Article Google Scholar Lee KS, Jo SK, Shin D et al (2014) Upgrading of iron from waste copper slag by a physico-chemical separation process. J Korean Inst Resour Recycl 23(3):30–36
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
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
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%.
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 processes due to the complicated occurrences. Instead, the pyro-metallurgical processes appear promising in …
Improving Beneficiation of Copper and Iron from Copper Slag by Modifying the Molten Copper Slag. Zhengqi Guo *, Deqing Zhu *, Jian Pan, Tengjiao Wu and Feng Zhang. …
Literature states that an iron grade that is considered viable for economic beneficiation should be at least 25% and this slag has an iron content above this limit, hence poses a serious ...
