The optimum conditions of sulfuric acid leaching process were particle size at < 0.045mm, sulfuric acid concentration at 90 wt.%, acid/slag mass ratio at 1.6:1, feeding temperature at 120 °C ...
Figure 3 shows the percentage of REEs that the slag has acquired from the bastnasite ore. Only 0.58% of iron was passed onto the slag, together with 15.02% Si, 12.53% Ca and 3.69% Mg. The ...
Our Spiral Classifier is available with spiral diameters up to 120″. These classifiers are built in three models with , 125% and 150% spiral submergence with straight side …
The results are shown in Fig. 3, which shows that the extraction of zinc and that of iron and silica increased significantly with increasing sulfuric acid concentrations and that an acid level of 0.44 mol/L is sufficient to extract more than 99% zinc and dissolve about 8.8% iron and 16.1% silica in 60 min. No further zinc was leached with more ...
Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, …
Spiral concentrator and spiral plant modelling of chromite bearing ore is investigated in this paper. Spiral product stream responses (grade and recovery) were …
We studied the leaching kinetics of recovering neodymium in sulfuric acid from the rare earth elements (REE) slag concentrated by smelting reduction from a magnetite ore containing monazite. The leaching kinetics on neodymium was conducted at a reactant concentration of 1.5 g REE slag per L of 0.3 M H2SO4, agitation of 750 rpm …
Coarse-grained hematite refers to iron ore with an embedded particle size of 2mm or more. It is easy to extract iron from this kind of haematite by using gravity separation and magnetic separation. Medium-grained hematite refers to iron ore with an embedded particle size between 0.02 and 2mm. This type of hematite is also relatively …
Slag with high P2O5 content generated during the use of high-P iron ores is an important potential source of phosphate. Because the P-rich 2CaO·SiO2–3CaO·P2O5 solid solution in the slag was ...
centrated to 9% REEs in the slag after the separation of 55% iron by smelting reduction. At this time, 20 g silica as flux and 140 g coke as a reducing agent were added to 1 kg of ore, which was smelted in an arc furnace for two hours at 1,500oC. 99% of the contained iron was extracted and 415 g of slag was recovered. The REE slag
The kinetics of reductive leaching of manganese from iron-rich manganese dioxide ore (IRMDO) using bagasse pith as a reductant in the presence of sulfuric acid was investigated. The effects of reductant type, stirring speed, ore particle size, leaching temperature, sulfuric acid concentration and weight ratio of IRMDO to bagasse pith on …
DOI: 10.1016/S1003-6326(18)64808-3 Corpus ID: 105844047; Dissolution of lateritic nickel ore using ascorbic acid as synergistic reagent in sulphuric acid solution @article{Kurunolu2018DissolutionOL, title={Dissolution of lateritic nickel ore using ascorbic acid as synergistic reagent in sulphuric acid solution}, author={Sait Kurşunoğlu and …
3.3 Effect of the Ratio of Sulfuric Acid to Ore. The effect of the amount of sulfuric acid added (the ratio of sulfuric acid to ore) was studied using three different ratios, 0.5 : 1, 0.75 : 1, and 1.1 : 1, while fixing the following other conditions: the roasting temperature was 300°C, and the particle size of ore was 96–80 μm.
Spiral Classifier. Capacity: 21-1785 t/24h (over flow); 145-23300t/24h (returned sand); Up to 150% spiral submergence. Spiral diameter: 500-3000mm; Single, double or triple …
Primary economical deposits of rare-earth elements (REEs) are exhausting all over the world, and it has become necessary to find new sources and methods for their extraction. In addition, increasing the application of REEs in modern technological society has increased its demand globally. One of the important movements to compensate for …
decreased to 45% at 600°C. The decrease of extraction may be due to evaporation of sulphuric acid and hence its non-availability above 300°C, and to decomposition of iron sulphate. Effect of amount of sulphuric acid The a m o u n t o f sulphuric acid was varied from 50 to 200% of the stoichiometric requirement ( 0 . 7 7 5 g H2SO4 per gram of ...
The Spiral Classifier is available with spiral diameters up to 120″. These classifiers are built in three models with , 125% and 150% spiral submergence with straight side …
with 20 wt.% ratio of slag–sulfuric acid more than 97% of Cu, 99% of Ni and Co could be extracted with less than 2.2% dissolution of Fe from nickel smelter slag for 25 wt.% solids loading and
The Spiral Classifier is available with spiral diameters up to 120". These classifiers are built in three models with , 125% and 150% spiral submergence with straight side tanks or modified flared or full flared tanks. All sizes and models are available with single-, double- or triple-pitch spirals. The Spiral Classifier offers the greatest sand raking …
Sadeghi et al. (2014) analyzed the global effect of wash water on the rejection of particles for a WW−6E spiral processing iron ore. The operation of the …
Spirals are gravity concentrators used for the concentration of coal, iron oxide ore and heavy minerals. As in any gravity concentrators the separation of minerals …
The extraction of vanadium from mechanically activated converter slag was studied in dilute sulfuric acid solution. The effects of roasting and leaching parameters were investigated. ... Samples for this study were taken from the converter slag disposal site in Panzhihua Iron and Steel Group Corp. ... The ore was mixed with a determined …
Dephosphorisation of iron ore is an important challenge to the sustainable development of iron-making industry. Hydrometallurgical processing is quite effective in the reduction of phosphorus level from iron ores, where dilute sulfuric acid is commonly chosen as the lixiviant due to its prominent cost-effectiveness Jump to main content . …
The spiral classifier such as the Akins classifier consists of a semi-cylindrical trough (a trough that is semicircular in cross-section) inclined to the …
The copper in the mineral reacts with sulfuric acid to form copper sulfate which enter into the leaching solution, and the iron in the mineral is mainly transformed to hematite and then remained ...
The iron mineral overwhelming majority is the bloodstone of weak magnetic in the red sulfate slag, and the magnetic separation effect of this slag is bad, generally adopts reselecting method recovery iron mineral wherein.General process is: sulfate slag removes wherein a part of gangue mineral through screening earlier, adopts one section spiral …
Sulfuric Acid Ba king Sulfuri c acid baking is a common me thod for REE mineral leac hing in both high an d low temperatur es. This process is carr ied out at 200 – 500 °C in an acid -resistant
The spiral classifier such as the Akins classifier consists of a semi-cylindrical trough (a trough that is semicircular in cross-section) inclined to the horizontal. The trough is provided with a slow-rotating spiral conveyor and a liquid overflow at the …
DOVE Spiral Classifier, also referred to as Screw Classifier, or Spiral Mineral Separator, is highly efficient classifier designed for closed circuit wet classification and separation of …
Large amounts of manganese-rich slag were generated from smelting low-grade manganese ore containing high iron and high phosphorus in electric furnace or blast furnace, which contain 25–40 mass% Mn. This paper describes an efficient hydrometallurgical process for the utilization of high manganese slag instead of …
