Phosphatic waste clay: Origin, composition
The likelihood of fine gangue entrainment to the concentrate and slime coatings' poor settling rates are enhanced; the residence time is also increased (Arnold and Aplan, 1986). When present in an ore, clays enter the processing circuit because of their ultrafine sizes making them virtually unavoidable ( Ndlovu et al., 2013 ).
اقرأ أكثر
Recovery of iron minerals from Indian iron ore slimes using …
Recovery of iron values from the Barsua iron ore slimes containing 56% Fe, 4.8% SiO 2, 7.2% Al 2 O 3 and 7.0% LOI by the addition of synthetic colloidal magnetite and oleate colloidal coating followed by high gradient magnetic separation technique was investigated. The effects of concentration of colloidal magnetite, pH, and magnetic field …
اقرأ أكثر
Recovery of Valuables From Low-Grade Iron Ore Slime and …
The slime is shown to have drastically different characteristics from those of Indian iron ore slimes. Effective recovery of iron values through physical beneficiation of the Ukraine slime is achieved. It is observed that a concentrate with 65% Fe can be obtained with 45% recovery of the iron value in the feed in spite of the low feed grade.
اقرأ أكثر
REMOVING IMPURITIES FROM IRON ORES: METHODS AND …
Overall, the acceptable level of phosphorus, sulphur and silica in the iron concentrate should be less than 0.04%, 0.15 % and 1.5 % respectively. Scarcity of high grade iron ores necessitates ...
اقرأ أكثر
Challenges Related to the Processing of Fines in the Recovery …
The effect of entrainment, slimes coating, changes in rheology caused by the presence of a significant amount of fines and of chromite recovery is addressed. Factors affecting fine particle ...
اقرأ أكثر
(PDF) Beneficiation of Synthetic Iron Ore Kaolinite Mixture …
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 ...
اقرأ أكثر
Recovery of Valuables From Low-Grade Iron Ore …
It is observed that a concentrate with 65% Fe can be obtained with 45% recovery of the iron value in the feed in spite of the low feed grade. A generic flow sheet …
اقرأ أكثر
recovery of iron values from slimes and dewatering of the concentrate
Recovery of iron minerals from Indian iron ore slimes Iron Concentrate Ore Milling Recovery bsmr doesburgnl. Recovery of iron values from the Barsua iron ore slimes containing 56 Fe 48 SiO 2 72 Al 2 O 3 and 70 LOI by the addition of synthetic colloidal magnetite and oleate colloidal coating followed by high gradient magnetic separation …
اقرأ أكثر
Iron ore slimes flotation
The rougher WHIMS stage yielded an iron pre-concentrate (34% Fe) at recovery level of 80%. The cleaning flotation stage brought the silica grade in the concentrate down to 1% (within the direct reduction specification). ... it is estimated that Fe losses generated at the slimes stage range between 8% reaching values higher than …
اقرأ أكثر
Processing of alumina-rich Indian iron ore slimes
Finally, an iron concentrate of 62.6% Fe, 2.0% SiO2, and 3.5% Al2O3 with 72% recovery was achieved at pH 7 and at colloidal magnetite concentration of 10–40 g/t at 12 kG, whereas the recovery ...
اقرأ أكثر
Two-stage processing of the slime sample (Flowsheet 1).
The pellets were prepared by adding slimes in different weight proportions (0, 10, 20, 30, 40, and 50%) with high-grade iron ore fines. The high-grade iron ore fines contain 64% Fe, 2.25% LOI, and ...
اقرأ أكثر
Optimization study of hydrocyclone for beneficiation of iron ore slimes
In a typical case, the maximum iron grade of 65% Fe with 60% recovery was predicted from a slime sample containing 57.84 Fe, 6.0% Al 2 O 3, and 6.7% SiO 2 [7]. The study on Kiriburu iron ore ...
اقرأ أكثر
Beneficiation of Clay-Rich High-LOI Low-Grade Iron Ore …
Srivastava et al. studied the recovery of the iron values from the washing plant slime of the Kiriburu mines using a two-stage cyclone in a close circuit with a spiral. The final concentrate was upgraded to 64.17% Fe(T) from 60% Fe(T) assessed in the simulation method using MODSIM . The slime characteristics were evaluated, containing …
اقرأ أكثر
(PDF) Flotation of Iron Ores: A Review
tive charges at all but exceedingly acidic pH values, so theo- ... a final concentrate iron grade of 69% with less than 3.5%. silica. ... of slimes (in this case, ...
اقرأ أكثر
Characterization and Processing of Iron Ore Slimes …
A flow sheet, comprising of hydrocyclone and magnetic separation techniques, has been developed to produce an iron concentrate containing ∼63% Fe …
اقرأ أكثر
Characterization and Processing of Iron Ore Slimes for Recovery of Iron …
Characterization and Processing of Iron Ore Slimes for Recovery of Iron Values Full Article; Figures & data; References; ... comprising of hydrocyclone and magnetic separation techniques, has been developed to produce an iron concentrate containing ∼63% Fe with 70.7% weight recovery from a feed sample containing 56.8% Fe, 5.1% …
اقرأ أكثر
Upgradation of Iron Ore Fines and Slime by Selective
Nevertheless, the application of magnetic separator technique results in an iron concentrate with 65% Fe from the raw slime having 59.22% Fe and with 50% recovery from a 10% slime slurry . Figure 4 Plot of the pH effect on the Al 2 O 3 /Fe and Al 2 O 3 /SiO 2 ratios in the concentrate obtained from 10 wt. % slurry of slime at 5 ppm …
اقرأ أكثر
Modeling and Optimisation of Spiral Concentrator for …
Experiments were carried out using a spiral concentrator test rig containing feed conditioner, centrifugal pump and a spiral concentrator with feed to spiral and recirculation. Time samples of concentrate and tails were collected, weighed, dried analysed. Regression equations were developed for Concentrate yield, grade and …
اقرأ أكثر
Recovery of Iron Values from Iron Ore Slimes of …
It is possible to produce a concentrate which assayed 65.93 % Fe, 1.45 % SiO2, 1.94 % Al2O3 and 1.56 % loss on ignition with a yield of 45.18 % with a recovery …
اقرأ أكثر
Design and synthesis of novel polyamine collector to recover iron …
The detailed characterisation of Indian iron ore slimes have been reported in earlier literature[1], [10], [11], [12]. Flotation of iron ore slimes from eastern region of India have been reported in literature too [13]. A significant problem with goethite is their high Al 2 O 3 and SiO 2 content. Several researchers have tried various ...
اقرأ أكثر
Optimal ceramic filtration operating conditions for an iron-ore concentrate
Ceramic filtration is used for the final dewatering stage of the concentrate product at a Brazilian iron ore operation. This research was aimed at improving the understanding of the suitability of ...
اقرأ أكثر
Iron ore slime as an alternate coolant in steelmaking: Performance
Recovery of iron values from the Barsua iron ore slimes containing 56% Fe, 4.8% SiO 2, 7.2% Al 2 O 3 and 7.0% LOI by the addition of synthetic colloidal magnetite and oleate colloidal coating followed by high gradient magnetic separation technique was investigated. The effects of concentration of colloidal magnetite, pH, and magnetic field ...
اقرأ أكثر
Management and valorization of phosphate beneficiation slime…
The valorization of phosphate mine waste (PMW) in different fields has recently become attractive to many researchers. This review paper examines the potential use of PMW as a raw material in different applications toward sustainable management strategies. Dewatering, recovery of phosphate and heavy metals, building materials and …
اقرأ أكثر
Challenges Related to the Processing of Fines in the Recovery …
The effect of entrainment, slimes coating, changes in rheology caused by the presence of a significant amount of fines and of chromite recovery is addressed. ... owing to entrainment which is a non-selective mechanism based on the particle size and density as well as the water recovery to the concentrate ... and the dewatering and …
اقرأ أكثر
(PDF) Beneficiation of High-alumina Bearing Iron-ore Slime: …
A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO2, 4.9 % Al2O3 and 5.35% LOI, have been evaluated to find out whether grinding of the ...
اقرأ أكثر
(PDF) IRJET-Fine particle processing of iron ore …
The yield of the magnetic concentrate is about 46.8% with 65% Fe. To improve the yield, the overflow from 2" hydrocyclone and the rejects from magnetic separation were deslimed and processed to recover the iron …
اقرأ أكثر
Response of process parameters for processing of iron ore slime …
Recovery of the concentrate could be improved to 63% (54.6% overall recovery) with a grade of 64.3% Fe, 1.9% silica and 2.2% alumina. Graphical abstract. Download : Download full-size image; ... So in order to achieve the grade and recovery of iron values from slimes of Indian iron ore, rich in alumina and silicate minerals, the …
اقرأ أكثر
Selective Flocculation of Iron Ore Slimes: Results of
A significant portion of currently mined iron ores, that is, 15–20% of run of mine ore, typically ends up as slimes—a slurry of fine particles (<45 micron) with relatively higher alumina contents (7–15% Al2O3). The only viable option currently is to dispose these slimes in tailing ponds for water recovery and future use. Due to increasing demand for …
اقرأ أكثر
Recovery of Iron Values from Iron Ore Slimes of …
Recovery of iron values from slimes results in economic benefit by utilisation of waste as a resource and minimizes the land requirement, surface degradation, ground water ... possible to produce a concentrate which assayed 65.93 % Fe, 1.45 % SiO 2, 1.94 % Al 2O 3 and 1.56 % loss on ignition with a yield of 45.18 % with a recovery of 60 % iron
اقرأ أكثر
Selective Flocculation of Iron Ore Slimes: Results of
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 ...
اقرأ أكثر