However, the acid-leaching tailings of laterite nickel ore (LTLNO), which contain valuable iron resources, have not been cost-effectively recovered. In this work, we designed a novel method to extract iron from LTLNO and recycle it into high-valuable iron phosphate products using only phosphoric acid and iron powder. ... 96.5 % iron recovery ...
Iron ore tailing is a major solid waste requiring advanced recycling methods because ore tailing powder is polluting air and water resources. For instance, about 300 million tons of tailings are … Expand
Best set of optimal recovery and iron ore grade acquired are 87.44% and 72.46% with operating conditions at (a) roasting temperature — 850 °C, (b) roasting time — 30 min, and (d) magnetic ...
High‑silicon iron ore tailings (IOTs) as mineral solid wastes derived from the processing and utilization of iron ore, which would threaten human health and the ecological environment if handled improperly.Coincidently, it consists of abundant quartz gangue. In this study, we proposed a superconducting high gradient magnetic …
Recycling iron tailings is significant for environmental security and resource recovery, as they contain iron-rich minerals. Given the complex composition of iron minerals and the low grade of iron present in the tailings, innovative suspension roasting-magnetic separation (SRMS) technology was proposed to treat iron tailings that would …
Earlier Iron ore tailings contain iron concentrations of around 45% or more. In future it may become economically viable to extract the iron content from tailings, and due to the high cost of land and environmental factors it is ... on ultra-fines recovery plant tailings revels that, there was an escape of martite, goethite and hematite in ...
Cyanide tailing is a kind of solid waste produced in the process of gold extraction from gold ore. In this paper, recovery of iron from cyanide tailings was studied with reduction roasting-water ...
The effect of lignite ratio on iron recovery is shown in Fig. 3. As shown in Fig. 3, total iron content, recovery rate of iron and metallization rate of iron in magnetic concentrate increased rapidly as the lignite ratio. Conclusions (1) Major chemical compositions of vanadium tailings are Fe 2 O 3, SiO 2, TiO 2, K 2 O and Na 2 O with …
Typical metallurgical results indicated the rejection of 25% of the iron oxides at 0.11 T, whilst producing a magnetic concentrate with TREO recovery of 51% at a grade of 1.25% and non-magnetic tails with TREO recovery of 41% at a grade of 1.08%, both at 1.74 T. Bastnäsite, monazite, florencite, and stillwellite minerals were confirmed to be ...
In-situ leaching from uranium ore/tailings. In-situ recovery methods consist of the circulation of a leaching solution directly throughout the ore. The leach solution is then collected, and the leached elements are recovered. This technique aims to reduce the quantity of solid waste and, thus, reduce the costs associated with its management.
For instance, the total iron content of different tailings streams varies in the range of 18.46 to 64.68% and the dominate iron ore mineral in the Cobber tailings was hematite, but in the other ...
The iron ore tailings in this study have particle sizes and particle shapes, which become easy to substitute other materials in the ceramic mass, as the clay used traditionally as a prime material is constituted of hydrated alumino-silicates with high contents of SiO 2 and Al 2 O 3, and commonly with some contamination of Fe 2 O 3, all …
In this paper, a novel method to recover iron from iron ore tailing (IOT) was studied. The method was induced with carbothermic reduction, followed by magnetic flocculation separation (MFS) and conventional magnetic separation (CMS). The effects of reduction temperature, as well as the amount of coal and sodium carbonate on iron …
Towards mine tailings valorization: Recovery of critical materials from Chilean mine tailings. Author links open overlay panel Natalia Araya a b, Andrzej Kraslawski b, Luis A ... Reuse of iron ore tailings from tailings dams as pigment for sustainable paints iron ore tailings dams failures in Brazil, vol. 200 (2018), pp. 412 …
The exhaustion of iron ore resources in China further emphasizes the importance of iron tailings as a secondary resource (Yang et al., 2011); therefore, the recovery of Fe from iron tailings is of interest. Moreover, it has great economic benefits and environmental protection significance.
Experiments have shown that it is possible to obtain a concentrate containing 65% iron, 1.8% alumina and 1.4% silica with an iron recovery of 80% from the tailings of Barsuan iron ore plant ...
Zhang et al. [22] developed a novel method for iron recovery from iron ore tailings with pre-concentration followed by magnetization roasting and magnetic separation. In the first stage, they ...
Results show that it is possible to achieve 65.78(%) of Fe, with 2.65% Al2O3, 3.66 SiO2 (%) in the concentrate using synthetic mixture feed and more than 60% of Fe is obtained from natural iron ...
In India, the tailings of iron ore beneficiation are dumped in slime ponds, which is a major environmental concern. In the present study, a new beneficiation circuit was designed to recover the valuable minerals from the tailing effectively. The present study involves the characterization of three different samples using chemical, particle size, …
In 2022, her company Nibeenabe piloted its device for remediation and attenuation of multiple pollutants (DRAM) technology to filter the tailings from a Madre de Dios mine extracting commodities that would otherwise be wasted. Large amounts of silver, copper, molybdenum, chromium, cobalt and other metals were recovered, according to …
Recovery of Iron Ore Tailings byColumn Flotation. January 2013. Journal of Minerals and Materials Characterization and Engineering 01 (05):212-216. DOI: 10.4236/jmmce.2013.15033.
A pilotscale experiment of the recovery iron ore tailings from Jiuquan Iron and Steel Corporation was conducted by Sun et al. [22] using pre-concentration and suspension magnetization roasting ...
Li et al. performed experimental study about the iron recovery from Baotou rare earth tailings using microwave reduction and low-intensity magnetic separation process in which micron-sized and nanosized carbons were used as reductants. They obtained iron ore concentrate with a grade of 63 % and an iron recovery of 54.80 %.
This innovative SMR technology is a quantum leap in separating refractory iron ore, which opens up a new approach for the efficient recovery of iron from iron ore tailings. View Show abstract
Subsequent flotation tests at natural pH on hot tailings samples with two stages of cleaning showed good upgrading, where a feed grade of 16.1 % Cr2O3 after desliming was converted to a ...
In China, the total 59.7 billion tons of tailings have been discarded as waste, and the generation of iron ore tailings is estimated to be one third of the total tailings [1]. Iron ore tailings not only cover huge land and pollute environment, but also give rise to security risks. In November 2007, 13 people died in the accident caused by …
Iron concentration tailings contain many valuable minerals, including apatite, which is not currently being recovered despite its use to make fertilizers and chemicals. This article proposes a flotation circuit to recover apatite from tailings generated by mining in Chile, based on laboratory tests and using the "Split Factor" …
The tailings pile in Moriah's Mineville hamlet towers over the community and contains the waste from the iron ore extraction process. The mines, now owned by Solvay-North America, a French ...
The separation technology provides for production of iron ore concentrate with total iron content of 65.9% and recovers 91.0% of magnetite and 80.5% of hematite from the tailings containing 20.4% ...
The iron grade in copper slag is as high as 40%, which is higher than the average iron grade (35%) of iron ore in China . The recovery of iron from copper slag can not only alleviate the serious shortage of iron ore resources faced by the domestic steel industry, but also alleviate the environmental pressure caused by copper slag storage.
In the Sivas-Divriği Iron Ore Concentrator, 600,000 t of tailings are discarded annually. There are already 1 million t of tailings deposited in ponds from the previous production activities. The presence of Co, Ni, and Cu in the tailings makes the beneficiation of those tailings attractive.
Mine tailings, the byproduct of mining and mineral processing, are increasingly mass produced as a result of increased demand for metals and minerals as well as the advancement in technology that allows for the exploitation of lower-grade ores. Lower grades can increase the volume of tailings that may contain new gangue …
A pilot-scale experiment on iron recovery from iron ore tailings using pre-concentration and then SMR followed by magnetic separation and flotation was performed. The iron grade of the iron ore tailings was upgraded from the initial 21.51% to 26.01% by the pre-concentration process of a staged LIMS and two-staged HIMS. The roasted …
The iron tailings were obtained from a tailings pond in Dabaoshan, Guangdong, and the iron phase composition of raw ore was analysed, as shown in Table S2. The particle size composition of the iron tailings is shown in Table S3, and the main phase components were the haematite and limonite phases (including α-FeOOH and γ …
A 28.52% iron recovery eciency with 40.90% TFe was achieved in the concentrate without ... tion [14], synergistic reduction with high-manganese iron ore [15], production of electrolytic iron from red mud in an alkaline media [16], and reductive sintering–magnetic ... centrates and tailings were dried in an oven at 100 °C for 12 h ...
In the treatment of iron ore, every ton of iron processed generates an estimated average of 360 kg of tailings. In the last 10 years, approximately 23,590 million tons of iron have been extracted worldwide [ 42 ], thus there are about 8492 million tons of stored tailings available as a possible source of REE recovery [ 81 ].
Based in the state of Minas Gerais, Brazil, Agera receives the sand produced from the treatment of tailings at Vale's iron-ore operations in the state and promotes its commercialisation and distribution. Vale began producing Sustainable Sand in 2021 after seven years of research as a substitute for sand extracted from the environment.
Periyasamy and Mukhopadhyay (2019) exploited hydrocyclone to separate Indian iron tailings, the iron content grew from 56.32 to 62.04%, and the solid recovery rate reached 32%. da utilized ...
For example, the SiO 2 content of post-flotation waste deriving from copper ores is between 27% and 59%, whereas SiO 2 is the main component in the ore tailings from iron-extraction SiO 2, also ...
Due to that, ArcelorMittal R&D Team started a study aiming to recover these iron oxides from Mont-Wright final tailings and produce a final concentrate with more than 66% Fe and less than 4% SiO2. Study showed an anomalous concentration of iron oxides in the finer fractions of tailings (<106m) due to spirals intrinsic inefficiency. This ...
