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In this paper, recovery of iron from cyanide tailings was studied with reduction roasting-water leaching process followed by magnetic separation. After analysis of chemical composition and crystalline phase, the effects of different parameters on recovery of iron were chiefly introduced.
Sorted product from the XRT Sorter was used as feed in the flotation and magnetic separation tests. This material had feed grades of 0.34% copper (Cu) and 6.9% iron (Fe). Key results of the tests include the following: A Copper concentrate of 29.6% Cu and 29.4% Fe, with 73.1 % recovery copper in un-optimized laboratory batch tests.
Ceng C, jun Wang H, tao Hu W, Li L and shuai Shi C 2017 Recovery of iron and copper from copper tailings by coal-based direct reduction and magnetic separation J. Iron Steel Res. Int. 24 991-7. Google Scholar
Manganese Ore Processing Technology and Equipment. Ore grinding machine has rod mill and ball mill all in wet type grinding machines combines with the SHP2000 type strong magnetic separation machine and CHF pneumatic flotation machines After many years of production test it turns out that the magnetic – flotation separation processing method is suitable for …
Against the dwindling status of mineral resources at present, effective recycling of tailings resources is an effective way to alleviate the shortage of resources, and to improve enterprise efficiency. This study was aimed to recover iron from tailings of Yangla copper ore, Fe content of which was 15.31%, and the content of strong magnetic iron mineral was about 11%.
Additionally, leaching rates of copper from the magnetic concentrates and tailings were recorded as 28.44% and 26.95% respectively. In summary, the proposed methods by Kunming University of Science and Technology scientists proved efficient for copper recovery, energy saving, and adaptability. Copper recovery was enhanced up to 87.61%.
A technique comprising coal-based direct reduction followed by magnetic separation was presented to recover iron and copper from copper slag flotation tailings.
(2) Flotation, re-election, strong magnetic separation or their combined process . Flotation is more to separate fine to particulate magnetic iron ore (particle size <0.02 mm). Gravity separation and magnetic separation are mainly used to separate coarse-grained and medium-grained weakly magnetic iron ore (20~2 mm). During gravity separation ...
(2) The flotation tailings were pelletized with limestone, then the green pellets were reduced, and the magnetic separation process was carried out. When the iron and copper grades in the magnetic concentrate were 90.21% Fe and 0.4% Cu, 91.34% iron and 83.41% copper were recovered, respectively.
R.M. Jiao et al., Recovery of iron from copper tailings via low-temperature direct reduction and … 975 the industrial scale requires further examination. Numer-ous laboratory-scale studies have focused on the reduction and magnetic separation of copper slags [22–24].
Iron ore tailings flotation - magnetic-gravity separation combined technology. Applied flotation-magnetic-gravity separation combined technology in iron recovery, gravity is used as pre-concentrating to increasing ore grade before magnetic separation, and desliming at the same time, increasing magnetic recovery rate.
An earlier work noted that magnetic separation is a feasible way to recover iron from the tailings of waste copper slag ﬂotation. Unfortunately, the iron grade of magnetic products and the recovery of iron by the magnetic separation process is relatively low, only 52.21% and 38.09%, respectively, due to the
After carrying out a froth flotation separation, the products are as shown in Table 1. Using this data, calculate: (a) Ratio of concentration (b) % Metal Recovery (c) % Metal Loss (d) % Weight Recovery, or % Yield (e) Enrichment Ratio Table 1: Grade/recovery performance of a hypothetical copper ore flotation process.
Maximizing the recovery of fine iron ore using magnetic separation Most iron ore operations that require beneficiation of ROM ore to produce lump, fine (sinter), and pelletizing concentrate iron ore products will discard a slimes fraction to final tailings. This fraction can vary in particle size from –200 µm down to –10 µm.
Copper ore beneficiation methods. 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.
Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica …
The recovery of iron from tailings has also been studied using magnetic separation after a pre-thermal treatment to transform the iron ores into magnetite . The objective of this study was to design a flotation circuit to produce pyrite concentrate of commercial interest from fresh tailings generated in a concentrator plant from the Atacama ...
A technique comprising coal-based direct reduction followed by magnetic separation was presented to recover iron and copper from copper slag flotation tailings. Optimal process parameters, such as re-ductant and additive ratios, reduction temperature, and reduction time, were experimentally determined and found to be as follows: a limestone ratio …
Several attempts has made to recover the iron values from the tailings through conventional mineral processing routes such as hydrocyclone, magnetic separation (incudes wet high intensity magnetic ...
Flotation tailings (21.86% iron grade) were obtained from Liaoning Province, China. The preconcentration concentrate, which was used as the roasting feed in this study, was obtained (iron recovery of 88.48%, yield of 77.06%) from the flotation tailings by high-intensity magnetic separation (7000 Oe).
accounted for a increase in the content of iron and a con- siderable reduction in the SiO2 content in the iron con- centrate, while the recovery of the mass and of Fe fell. It is important to add a depressant agent to the iron mi- nerals in the iron ore reverse flotation. In this work, corn starch and CMC (carboxymethylcellulose) were used.
03 03: Iron tailings re-processing technology- the flotation separation. The recovery rate of iron in concentrate is low by the magnetic separation. The main reason is the current magnetic separation equipment is difficult to effectively recover fine or micro-fine magnetic iron-containing minerals.
Currently, the majority of copper tailings are not effectively developed. Worldwide, large amounts of copper tailings generated from copper production are continuously dumped, posing a potential environmental threat. Herein, the recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation was …
The recovery of iron from tailings has also been studied using magnetic separation after a pre-thermal treatment to transform the iron ores into magnetite . The objective of this study was to design a flotation circuit to produce pyrite concentrate of commercial interest from fresh tailings generated in a concentrator plant from the Atacama region, Chile.
The beneficiation process refers to the production process in which the mined ore undergoes various operations to obtain a concentrate that meets the smelting requirements. The beneficiation process mainly includes: ore crushing and screening, ball mill grinding and classifier classification, mineral separation (gravity separation, flotation and magnetic separation, …
The physical beneficiation including gravity separation, magnetic separation and flotation what do not alter the chemical properties or the complex characteristics of the ore, resulting in the recovery rate of manganese no higher than 80%, and typically contaminated with a lot of iron (Zhou et al., 2015, Andrade et al., 2012).
In addition, the magnetic separation method can also adopt the strong magnetic-flotation method for the extraction of iron from hematite. The monomer quartz and clay chlorite and other gangue minerals in the ore are discharged under the rough grinding condition by strong magnetic separation, and the rough magnetic separation concentrate is sent ...
Iron recovery was mainly achieved through a series of magnetic separation, and titanium recovery was on the combination of magnetic pre-concentration and flotation separation.
A joint process of flotation and magnetic separation was proposed to process the ore. This paper introduces the test results of flotation tailings by a wet drum separator. Results show that iron concentrate assaying 60.21-68.12% Fe at a recovery of 71.9-75.32% can be obtained, when the flotation tailings assays 33.91%Fe.
After magnetic separation, the magnetic product was the final concentrate, and the nonmagnetic product was the tailings. The iron grade of the concentrate and tailings were detected by the laboratory using chemical analysis methods, and the recovery of iron was calculated according to Equation (2).
centration by flotation carried out with a fraction of iron ore made up of the magnetic separation tailing. The study into the recovery of this material carried out in a pilot unit scale had as its main objective, the production of an iron concentrate meeting standards required for commer- cialisation i.e. Fe and SiO2 content of around 66% and