sodium sulfate ore beneficiation

The demand for rare earth elements for everyday technology and applications has initiated much research into the extraction and recovery of these rare earth elements. An otherwise unknown group of minerals, eudialyte is a zircon silicate consisting of rare earth oxides (REO), contained in a unique mineral structure and represented by a …

The reduction of nickel ore was conducted at a reduction in temperature variations (950°C, 1050°C, 1150°C) with the presents of 10 wt.% additive sodium sulfate (Na 2 SO 4 ) and addition 0%, 2. ...

Sodium carbonate (Na 2 CO 3) and sodium sulfate (Na 2 SO 4) were used as additives, both being of analytical grade (Sinopharm, China). Methods Experimental Procedure and Evaluation Indexes. The iron ore was crushed and ground to 65 wt.% passing 0.074 mm, and the lignite was crushed and screened to a size range of 1–5 mm.

In Part I, reduction/sulfidation behaviors of a saprolitic laterite ore in the presence of sodium sulfate were investigated, with an emphasis on thermodynamic analysis, selective reduction/sulfidation ratios and kinetics. To separate the interactions between Ni and Fe, chemical titration analysis was adopted to determine the contents of …

According to reductive roasting-magnetic separation indexes of laterite ore, adding sodium sulfate improved the performance of reductive roasting-magnetic …

The reason is that sodium sulfate can destroy the stable structure of nickel ferrite (NiFe 2 O 4) and make it transform into nickel sulfate. Yu et al. also discussed the influence mechanism of sodium sulfate on the sulfating roasting of nickel sulfide concentrate. The sulfating reaction interface can be moistened by composite sulfate melt ...

Li et al. (2012) studied the beneficiation of nickeliferous laterite by reduction roasting in the presence of sodium sulfate and noticed when the laterite was mixed with sodium sulfate and then ...

The ore sample for the experiment was 500 g. Sodium sulfide (Na 2 S) 200 g/t is fed into the grinding process for sulfidization of minerals, zinc sulfate (ZnSO 4 *7H 2 O) 500 g/t* ore and sodium cyanide (NaCN) are supplied to the depression of zinc minerals and pyrite 20 g/t*ore. Flotation experiments were performed on laboratory flotation ...

Laterite ore is one of the important sources of nickel (Ni). However, it is difficult to liberate Ni from ore structure during reduction roasting. This paper provided an effective way for a …

Li et al. (2012) studied the beneficiation of nickeliferous laterite by reduction roasting in the presence of sodium sulfate and noticed when the laterite was mixed with sodium sulfate and then reduced at 1,100°C for …

There are three basic ore varieties of zinc oxide which are of economic ... Flotation is the most commonly used method for beneficiation and pretreatment of oxidized zinc minerals, and there have been extensive investigations ... (DTAB) and sodium dodecyl sulfate (SDS) J Phys Chem, 97 (1993), pp. 13792-13802. CrossRef View in Scopus …

Large scale utilization is still an urgent problem for waste red mud with a high content of alkaline metal component in the future. Laterite ores especially the saprolitic laterite ore are one refractory nickel resource, the nickel and iron of which can be effectively recovered by direct reduction and magnetic separation. Alkaline metal salts were usually …

A high nickel grade ferronickel was produced from laterite ore using the selective reduction-wet magnetic separation process, with the addition of sodium sulfate (Na 2 SO 4).The ferronickel concentrate assaying 9.87% Ni, with a nickel recovery of 90.90% can be obtained, when laterite ore was reduced at 1200 °C for 50 min with the …

Phosphate ore is a valuable strategic resource. Most phosphate ore in China is collophane. Utilization of mid-low grade collophane is necessary to maintain social sustainable development.

Highlights Ni beneficiation of laterite ore by using direct reduction process is proposed. Sodium sulfate is capable of intensifying the reduction roasting of laterite. Average particle size of ferronickel grows up to 50 μm when reduced with Na 2 SO 4. Selective enrichment of Ni can be realized by suppressing the metallization of Fe. New …

Flotation technology is a developed ore beneficiation technique and has been used for the ... anionic-surfactant are used in direct flotation and cationic-surfactants in reverse flotation during the beneficiation of phosphorites. Sodium ... starch Cashew gum, Iron/aluminium sulfate, tartaric acid, Alkyl phosphate acids, hydrofluoric acid ...

Preparation Process of Silver Ore Beneficiation. ... When using regulators such as sodium sulfite, sodium sulfate, and starch, attention should be paid to their dosage. Exceeding a certain amount ...

Phosphate ore is a valuable strategic resource. Most phosphate ore in China is collophane. Utilization of mid-low grade collophane is necessary to maintain social sustainable development. The gravity-flotation combination separation process can be utilized to separate mid-low grade collophane, but the process consumes a large quantity of acid in …

Depending on the type of ore and the needs of the beneficiation product, different beneficiation processes may actually be available. ... Lime, sodium sulfate, sulfuric acid, etc. Sodium silicate, sodium metaphosphate, etc: 2.1. ... Vulcanization refers to the metal oxide ore being first treated with sodium sulfide. It generates a layer of ...

Sodium sulfate is found to be capable of enhancing the reduction of laterite ore through liberating iron and nickel from Ni/Fe substituted-lizardite, as well as …

For the mechanism of sodium sulphate, Na + is able to liberate the hosted nickel and iron within lizardite, while SO 42– is the sulphur …

Limited by the total amount of lithium on the market, lithium extraction from natural resources is still the first choice for the rapid development of emerging industries. This paper reviews the recent technological developments in the extraction of lithium from natural resources. Existing methods are summarized by the main resources, such as ...

Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade …

The development of tin ore beneficiation. ... When used in combination with sodium alkyl sulfate and styrene phosphonic acid, it can expand the flotation area, which is beneficial to the floating of cassiterite. It can also be used as an inhibitor of gangue minerals to improve the concentrate grade. Carboxymethylcellulose is also a commonly ...

ABSTRACT. In Part II, the correlation between Fe–Ni grain growth and characteristic fusion temperatures of the Na 2 SO 4 –laterite mixtures, and phase transformations of the reduced pellets were investigated. For the mechanism of sodium sulphate, Na + is able to liberate the hosted nickel and iron within lizardite, while SO 4 2– is the sulphur source for the …

studied the effect of sodium sulfate on the hydrogen reduc-tion process of nickel laterite ore. The maximum nickel content of 5.6 mass% and nickel recovery of 83.6% could be obtained from the reduction of nickel laterite ore at 800°C for 220 min in the presence of 20.0 mass% sodium sulfate at a total gas flow rate of 5.6×10−5 m3/s (V H2:V ...

Ni beneficiation of laterite ore by using direct reduction process is proposed. Sodium sulfate is capable of intensifying the reduction roasting of laterite. Average particle size of ferronickel grows up to 50 μm when reduced with Na 2 SO 4. Selective …

Slurry pipeline systems are widely utilized around the world as a feasible alternative to large-scale solids transport for conveying minerals such as fly ash, iron ore (IO), coal, lime stone, copper concentrate, zinc tailings, and other materials. IO fines play an important role in sintering and palletization. Currently, a large amount of IO fines have …

In Part I, reduction/sulfidation behaviors of a saprolitic laterite ore in the presence of sodium sulfate were investigated, with an emphasis on thermodynamic …

Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was studied on the basis of process mineralogy. The results show that the low-grade laterite nickel ore is a typical weathering sedimentary …

Additives such as sodium sulfate have been added to optimize the extraction of nickel . ... As shown in Fig. 15, the operations includes processes including ore beneficiation and blending, reduction roasting, and leaching of roasted ore in the ammoniacal solvent. Then, there is separation of Ni and Co using solvent extraction, and …

The Main Ore Body and West Ore Body were mined by Baotou Iron and Steel Group in 1957, and the West Ore Body was exploited in 2004. 5. 2.4. Ion-adsorption clays. Ion-adsorption deposits (weathering crust deposits) are a unique type of RE deposit with HREEs that are characterized by the adsorption of RE ions on clays, dominantly kaolinite …