The flotation was used to further remove phosphorus. After the flotation process, the Fe grade of the concentrate increases to 60.12 % while the P content decreases to 0.29 %. ...
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Excluding above topic,the efficiency and stability of Feammox reaction are highly dependent on environmental conditions, such as such as pH, iron availability, concentrate …
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Apatite, Ca5(PO4)3F, is a useful raw material for the production of both elemental phosphorus and phosphoric acid, and the mine tailings present at Luossavaara-Kiirunavaara AB (LKAB) in Kiruna, Sweden, represent a …
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The effect of different electrolytes, NaCl, CaCl 2, NaHCO 3, RROC, and synthetic reverse osmosis concentrate (SROC), was studied on the iron concentration and the …
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Zhang et al. [16] used a magnetization roasting–magnetic separation–reverse flotation process to study the iron recovery and dephosphorization of an HPOIO containing …
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The effect of leaching time on the quality of iron ore concentrate and phosphorus removal is shown in Figure 1. It can be seen from Figure 1: When the leaching time of sulfuric acid is 0.5~2.0 h, the grade of iron ore concentrate …
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The reduction of phosphorus content at the concentrate of some iron ore mines in Mexico, Sweden and Iran, where the apatite is the main phosphorous mineral, can be easily …
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The Fe 2 O 3 and Na 2 O contents in the final leaching product are 55.23 % and 0.23 %, and can be directly used as iron concentrate in the ironmaking process. ...
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The claimed method for purifying iron ore concentrate from phosphorus has been tested in laboratory conditions. Roasting of the concentrate with phosphorus content up to 0.7-0.9% was...
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Phosphorus removal from liquid streams is usually obtained by physical, chemical or biological methods. Table 2 lists common methods and summarizes their advantages and …
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The current study was focused on removal of sulfur from the iron ore concentrate by using the chemical leaching technique. The magnetite iron ore concentrate was chosen for this …
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About two third of the phosphorus can be removed by roasting with 3 % CaO to hematite, coarse grinding to d50 0.3 mm, dry high intensity magnetic separation and leaching …
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With the increasing consumption of high-quality iron ore, realizing the efficient utilization of refractory iron ore resources is of strategic significance for the sustainable …
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EC has been studied for phosphate removal from concentrates showing good removal results [38], [39]. ... The first aim of this study is to study the matrix effect on …
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Acid leaching is the most efficient method for removal of phosphorus from iron ore. Among the tested acids, Sulfuric Acid (H2S04) is the most effective for this purpose.
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Acid leaching, a more effective dephosphorization method (Forssberg and Adolfsson, 1981), has the advantage that no completely monomeric dissociation of the …
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Both reactive phosphorus (orthophosphate, PO 4 3−) and non-reactive phosphorus (e.g., phosphonate) contribute to eutrophication, and people mainly focus on the PO 4 3− control. …
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Phosphorus removal from high phosphorus oolitic iron ore with acid leaching fluidized-reduction and melt-separation process. ISIJ Int. (2015) Han, H., Duan, D., Zhou, E., …
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High-phosphorus iron ores from the Pilbara area of Western Australia are accompanied by the presence of goethite, and the removal of phosphorus by leaching has been proposed to counteract the ...
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Phosphorus associated with the goethite in high-phosphorus iron ores can be removed to 0.075% P using a heat treatment at 300–350°C for 1 h with 10 wt% NaOH, followed by a water leach. …
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These bubbles concentrate the acoustic energy into tiny reaction zones and thereby generate a high pressure and temperature in a short time, ... Zhu et al. (2021) adopt the …
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iron concentrate, this method has many advantages in terms of phosphorus removal from iron concentrate. Moreover, this paper investigates the thermodynamics and …
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The current study was focused on the removal of sulfur from iron ore concentrate using chemical leaching technique. Magnetite iron ore concentrate was chosen for this purpose. The results …
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The phosphorus content in the iron concentrate is about 0. 6 – 0.8 % and the studies has shown that it is not represented as separable from iron minerals species, Belikov . ... resistant to acid …
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Unlike sulfur, phosphorus in iron ore is locked in the sinter phases during iron ore sintering. Ostwald (1981) found that most of the phosphorus in the sinters he analyzed reported …
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When treating actual RO concentrate, the energy consumption for ATMP removal and phosphorus recovery was 0.010 kWh/g-P, which was significantly lower than that of the …
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#1 Pros Due to the magnetic differences between phosphorus and iron minerals in phosphate ore, conditions are provided for magnetic separationof phosphorus. Because of the economy of magnetic separation process, it has become one of the main processes of phosphate iron ore beneficiation. At the same time, the succes…See more on miningpedia
The removal of phosphorus from iron ore using a low temperature heat treatment with additives, followed by alkaline or water leaching, has been tested by Fisher-White et al., …
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roasting followed by a water washing process was employed to remove phosphorus impurity from the iron ore under the various sodium hydroxide concentrations, different roasting …
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The composition of iron concentrate obtained: 64.12% Fe and 0.07% phosphorus with an iron recovery of 96.83%, and a rate of dephosphorization of 74.08%. Figure 2 shows a flowsheet for …
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A laboratory study to evaluate the possibility of sulphur and phosphorous removal from iron ore concentrate by leaching Hassan Rezvani Pour1,a, Ali Mostafavi1, Tayebeh Shams Pour1, …
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