Characterization of Nickel in Chromite Beneficiation Tailings …
This study investigated the recovery of nickel from tailings (0.2% Ni) obtained in a chromite beneficiation plant using H2SO4 leaching followed by oxalic acid precipitation.
Primary beneficiation of tantalite using magnetic separation and acid
Primary beneficiation was successfully performed prior to dissolution of manganotantalite (sample A) and ferrotantalite (sample C) samples obtained from two different mines in the Naquissupa area, Mozambique. Magnetic separation removed the majority of iron and titanium, whereas H2SO4 leaching removed a large portion of thorium and uranium in …
Research Status of Valuable Metal Acid Leaching …
This paper summarizes the current research status of organic acid and inorganic acid leaching recovery of lead-zinc tailings. The purpose is to provide reference for the research on the recovery of valuable metals from lead-zinc tailings by acid leaching in China 2. Lead-zinc Tailings Organic Acid Leaching. 2.1. Citric acid leaching
Primary beneficiation of tantalite using magnetic separation and acid
MS is usually applied in combination with an adjunct process such as GC (Alabi et al. 2016;Berhe et al. 2017;Nete et al. 2014) or aqueous leaching (Nete et al. 2014) for proper beneficiation ...
Review of methods and technologies for the enrichment of …
Abstract The article presents the results of generalization of known information on various methods of enrichment of low-grade phosphate raw materials in the world. Based on the review of literature materials, scientists propose several methods of enrichment: mechanical, calcination at high temperatures, flotation, chemical enrichment with various acids and salts. …
Recovery of lithium from spodumene-bearing pegmatites: A …
The present scenario has urged the necessity to beneficiate and extract lithium from the available resources judiciously. Pegmatites constitute the second major economic resource of lithium, after brines, accounting for about 25% of global production [14].The lithium-bearing minerals, hosted by the pegmatite rocks, include spodumene, lepidolite, petalite, amblygonite, …
Methods of Extracting TiO2 and Other Related Compounds …
Subsequently, the combustion product is subjected to acid leaching with nitric acid, in which NaCl, MgO and Mg can be readily dissolved, leading to the isolation of FeTi. It has been revealed that FeTi is obtained as the major phase when the acid leaching is carried out at low temperatures (40 °C), where Fe 3 Ti 3 O also exists as a minor phase.
A Review on the Recovery of Titanium Dioxide from Ilmenite Ores …
Strong acid leaching is promising in terms of the purity of the produced TiO2, low energy consumption and waste management. The effect of several factors on the acid leaching kinetics in reported processes was reviewed. Temperature, time and acid concentration significantly affect the dissolution of titanium and impurities in ilmenite.
Chemical benefication of Rosetta ilmenite by direct …
The production of synthetic rutile (89% TiO 2) from Rosetta ilmenite concentrate has been studied. High acid concentration (high ilmenite/acid molar ratio) and reduction with …
Leaching of ilmenite to produce titanium based materials: a …
Sulfuric acid causes less corrosion and can extract titanium from low grade titanium sources, although it generates a high amount of solid and acid waste. Leaching in weak acids like citric acid requires low acid concentration. This process extracts more titanium than …
Low-Grade Phosphate Tailings Beneficiation via …
In this paper, the beneficiation of rejected phosphate washing sludges (Ps) was investigated using acid leaching methods. Chemical analysis showed that these sludges are a low-grade ore (15.84% P2O5).
beneficiation economics department of mineral
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The Hydrometallurgical Approach in the Production of a …
The kinetics of the sulfuric acid leaching of altered ilmenite, mechanisms, and process intensification methods were studied. The effect of changing the chemical composition …
Mechanism and Kinetics Study on Sulfuric Acid Leaching of …
The results indicate that alkaline roasting pre-treatment of the ilmenite ore can transform acid-resistant FeTiO 3 into more reactive Na 2 TiO 3 and NaFeO 2, which are more …
Leaching of ilmenite to produce titanium based …
wide applications. Transformation of ilmenite to dierent titanium based materials by strong and weak acid, and base digestion, is discussed. Eects of temperature, concentration of acid/base, reaction time on dissolution of ilmenite are extensively reviewed. Characterization of the starting materials, intermediates and the products by x-ray ...
A Review on the Recovery of Titanium Dioxide from Ilmenite …
Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the produced TiO2, low energy …
Characterization of Nickel in Chromite Beneficiation …
pressure acid leaching (HPAL),5,6 atmospheric leaching (AL),7 heap leaching (HL)8,9 and bioleach-ing.10 In these processes, inorganic acids (HCl,11 H 2SO 4 12,13), organic acids or their mixtures (ascor-bic acid:H 2SO 4, 14 citric acid15) have been tested to determine the leaching mechanism for Ni extraction from different resources ...
A review of the beneficiation of calcareous phosphate ores …
3. Analysis methods and process chemistry3.1.. Analysis methodsIn the most of leaching investigations, the phosphate rock samples were crushed and then sieved to collect various size fractions for analysis of combined water and organic matter, P 2 O 5 content, CO 2 content or loss on ignition (LOI) and acid insoluble residue (AIR). In the leaching …
(PDF) Atmospheric acid leaching of nickel laterites review …
The selectivity was claimed to be a consequence of increased hydrogen ion activity, allowing for economic acid consumption and limited destruction of the laterite lattice. In this study the claims of the Atmospheric Chloride Acid Leach Process (hereafter referred to as the Jaguar Process) were investigated on a saprolytic laterite ore.
Beneficiation of High-Phosphorus Siderite Ore by Acid …
2.2.1. Acid Leaching Dephosphorization The raw ore was ground to a specific particle size for the sulfuric acid leaching experiments. This procedure was accomplished using the XMQ 240 690 ball ...
Basic Sulfate Precipitation of Zirconium from Sulfuric Acid Leach …
To date, acid decomposition of eudialyte has been extensively studied [7,8,12,13,14].Sulfuric acid (H 2 SO 4) is considered to be the best candidate for Zr leaching from the eudialyte or eudialyte residue after REE extraction.However, the leaching process is not selective, so many impurities remain in the sulfuric acid leach solution; such as sodium, iron, and aluminum …
Life cycle assessment and economic analysis of acidic leaching …
The vast application base of lithium-ion batteries and subsequent production will inevitably lead to a large number of spent lithium-ion batteries after their useful life. Recycling of the spent lithium-ion batteries is an essential route to safeguard the environment and to have a sustainable supply of valuable metals contained by these batteries. This paper explores two …
Optimization of leaching conditions for extraction of …
Maximum magnesium extraction yield was determined to be nearly 98% for both acids under optimum leaching parameters which leaching temperature was 85°C, solid ratio was 20wt.%, leaching time was ...
Beneficiation of titania by sulfuric acid pressure …
2 from Panzhihua ilmenite through sulfuric acid pressure leaching was investigated. Specifically, the effect of reaction temperature, H 2SO 4 concentration, acid/ore ratio, leaching time, and the concentration of Fe2+ on the pressure leaching process were systematically examined. The resulting Ti-rich materials were characterized, and the reaction
Recovery and purification of kish graphite from steelmaking …
Graphite has been a critical raw material in recent years due to its high economic importance and high risk of supply disruptions. The traditional source of graphite is natural graphite ores; however, the production of natural graphite ores is controlled by few countries. It is thus important to find an alternative source of graphite, and steelmaking byproducts, such as …
A New Route of Roasting-Flotation-Leaching for …
A leaching exploration test shows that the TiO2 grade of the flotation concentrate can be improved to 53.90%. XRD analyses reveal that the ilmenite in the VTM ore is converted into anatase and rutile during the …
Bauxite Beneficiation: An Approach to Value Addition in …
It is preferred that before the acid leaching, the iron content of metallurgical bauxite can be brought down by physical beneficiation processes, such as the high intensity wet magnetic separation and reduction roasting followed by magnetic separation, so that minimum HCl can be used in bringing down Fe 2 O 3 below 2.5%. On a similar concept ...
Chemical benefication of Rosetta ilmenite by direct reduction leaching
The effect of leaching temperature upon ilmenite dissolution was studied in the range of 50 to 90 °C, while the other leaching conditions were fixed at 4 M acid in 1:5 w/v solid/liquid ratio for 4 h. The results obtained are shown in Fig. 2. It indicates that the amount of iron leached is directly correlated with temperature up to 90 °C.
Characterization of Nickel in Chromite Beneficiation Tailings …
This study investigated the recovery of nickel from tailings (0.2% Ni) obtained in a chromite beneficiation plant using H2SO4 leaching followed by oxalic acid precipitation. The tailings were characterized using mineral liberation analysis. Ni was found as Fe-Ni, Fe-Ni-Co sulfide minerals, which were encapsulated in serpentine, olivine, pyroxene and clinochlore. …
A Preliminary Study on the Beneficiation and Recovery of …
In this study, a MSWI bottom ash sample was assessed to evaluate the feasibility of various physical beneficiation processes in concentrating valuable elements prior to chemical leaching. The raw sample was initially assayed to determine the content and economic value of various metals present in the material. The potential recoverable value (PRV) of the sample …