Production of synthetic rutile from tin ore beneficiation …

In this study, the production of synthetic rutile from ilmenite as a by-product from tin ore beneficiation through pre-oxidation and reductive leaching of the pre-oxidized ilmenite …

Reductive leaching of ilmenite ore in hydrochloric acid for …

In the present work, we propose a process for the production of synthetic rutile based on hydrochloric acid leaching of ilmenite ore at ambient pressure in the presence of …

Microwave Acid Leaching of Beneficiated Ilmenite for …

results of the studies on leaching characteristics of beneficiated ilmenite wherein, microwave energy was used for heating the solution instead of conventional heating. MATERIALS AND …

Process flow sheet of chemical leaching process.

Coal leaching is a two-stage process where alkali and acid leaching cycles are used, where most of the ash constituents are accumulated in the spent acid and hence purification of spent acid ...

A review of mineral processing of ilmenite by flotation

Table 1 presents basic information about ilmenite properties (rutile properties are also provided for a comparison), and Fig. 2 shows the crystal structure of ilmenite. The theoretical TiO 2 content in ilmenite is 52.7% and the specific gravity of ilmenite is high (ilmenite is considered to be a heavy mineral with the specific gravity of about 5). Fig. 2 shows that …

A review of mineral processing of ilmenite by flotation

At present, the collectors employed for the recovery of ilmenite can be broadly classified into six categories: oxidized paraffin soap, tall oil, arsenic acid, oleic acid and its derivatives ...

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 experiments, …

(PDF) Leaching of Copper Sulphides

In the ten years from 2003 to 2013 global mine production of copper has increased by over 23% to meet demand while the weighted average head grade has dropped from 0.9 to 0.7% Cu.

A review of chemical leaching of coal by acid and alkali …

In order to understand the essential treatment of coal for efficient removal of mineral matters and improve coal properties by beneficiation techniques are crucial to developing advanced technologies.

Chemical benefication of Rosetta ilmenite by direct reduction leaching

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 consumption and waste ...

Challenges and avenues for acid mine drainage treatment, beneficiation …

Mining activities are notorious for their environmental impact, with acid mine drainage (AMD) being among the most significant issues. Specifically, AMD has recently been a topical issue of prime ...

The Use of Acid Leaching to Recover Metals from Tailings: A …

Mine tailings deposits are often overlooked by the industry, posing significant environmental challenges due to chemical hazards and inadequate maintenance. Nevertheless, such mineral deposits hold considerable economic potential for processing, and the adoption of innovative technologies may also address critical chemical and physical stability issues. …

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 ...

Review on comprehensive utilization of nickel laterite ore

Qiao et al.(2025) extracted iron from nickel laterite ore acid leaching residue using phosphoric acid and iron powder, achieving a 96.5 % iron recovery rate and producing high-purity FePO 4 (99.4 %). This method offers a new approach for the resourceful utilization of nickel laterite ore acid leaching residue.

Piloting of the Beneficiation and EPAL® Circuits for …

Acid Leach (PAL) discharge, while allowing for the atmospheric leaching of nickel and cobalt from the saprolite. as shown in Figure I, below. It was anticipated that separate processing of

Optimization of Alkaline Roasting to Enable Acid Leaching …

The alkaline roasting route has some relevant advantages, the main one being lower energy consumption and lower carbon dioxide emission compared to the chloride route, which requires an oxidation step performed at 1300–1800°C to convert TiCl 4 vapor into TiO 2 releasing 550 kg of CO 2 per ton of TiO 2 produced [].Another feature is the possibility of leaching the roasted …

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 …

Beneficiation of a Greek serpentinic nickeliferous ore Part II

Heap leaching may be also applied for the treatment of low-grade laterite ores, which normally requires longer times and has lower nickel and cobalt recoveries compared to acid leaching in ...

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.

Effect of Hydrochloric Acid on Leaching Behavior of

In the wet process, the mineral is treated with mineral acids that may be nitric, hydrochloric or sulfuric according to: Globally, most of phosphoric acid is manufactured by the wet process using ...

Primary beneficiation of tantalite using magnetic separation and acid

The solution was analyzed using ICP–OES, and the analysis was repeated for the all the dissolution and quantitative analyses at different stages of the beneficiation process. 2.4. Acid leaching procedure for removal of radioactive materials Fig. 1. Scheme for the tantalite ore beneficiation using magnetic separation and acid leaching processes.

Effective Separation and Beneficiation of Iron and …

Overall acid consumptions of ores under the optimum conditions were 669 kg H2SO4/ton dry ore for nontronite and 714 kg H2SO4/ton dry ore for limonite.Multi-step leaching experiments which included ...

Beneficiation and Sulfuric Acid Leaching of Manganese Ore …

The optimum conditions for first stage leaching were 70 g/L solid–liquid (S/L) ratio at 40°C for 30 minutes, and 2.0 M sulfuric acid, 100 g/L S/L ratio, 7 g/L starch, at 85°C for 120 minutes ...

Effective Separation and Beneficiation of Iron and …

DOI: 10.1021/acssuschemeng.0c00219 Corpus ID: 213779281; Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue @article{Lei2020EffectiveSA, title={Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue}, author={Meng Lei and Bao-zhong Ma and …

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 ...

A Review of the Beneficiation of Calcareous Phosphate Ores …

Abstract The beneficiation of phosphate ores containing carbonate gangue by conventional techniques such as physical separation methods or flotation is very difficult due to the similarities in physico-chemical properties of constituent minerals present in the system. Carbonate-rich phosphate deposits can be processed by calcination and by selective acid …

CHEMICAL BENEFICIATION OF NIGERIAN ILMENITE ORE …

This work has shown that leaching of ilmenite ore in HCl solution was significantly influenced by the acid concentra- tion, reaction time, solid-liquid ratio and temperature, and the

Physical and Chemical Beneficiation of the Egyptian Beach …

The effect of the acid type upon the REEs leaching efficiency from the powdered sample is tested using 3M of H 2 SO 4, HNO 3 and HCl under the 1/3 solid/liquid ratio, 80 mesh particle size, 200 ...

beneficiation economics department of mineral

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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

Chemical benefication of Rosetta ilmenite by direct …

The present paper is concerned with studying a rapid and economic process to upgrade Rosetta ilmenite concentrate into synthetic rutile through simultaneous iron removal …

Processing anatase ores for pigment production

However, Paixao and De Mendonca (1979) reported the beneficiation an anatase ore containing 28 wt% TiO 2 by a combination of slime removal, controlled ... Laboratory (Sole, 1999b) and mini-plant (Sole et al., 1999) work with liquor from a sulphuric acid leach of a titaniferous magnetite indicated that reasonable titanium extraction could be ...

Recovery of Phosphors by Beneficiation Technology

Phosphorous is indispensable in the phosphoric acid industry, fertilizers, and elemental phosphorus production due to its high economic importance. The way to successfully upgrade phosphate ore was based on a full understanding of its mineralogy, mineral surface properties, mineral distribution and liberation. Most phosphate ores are not suitable for direct …

Beneficiation and Sulfuric Acid Leaching of …

Consequently, the acid leaching reduction method possesses the advantages of energy conservation and the one-step leaching process [12]. The research is aimed to develop a comprehensive method for optimal beneficiation of manganese ore and high-efficient leaching. Thus, it will be possible to exploit the Unagad manganese deposit by selecting ...

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, …

Recent process developments in beneficiation and …

Three generations of leaching processes, pool leaching, heap leaching and the widely used in situ leaching, have been developed successively in China. 108 Ion-adsorption RE ores were initially leached in sodium chloride (NaCl) solution and subsequently precipitated with oxalic acid (H 2 C 2 O 4). The large amount of high-concentration NaCl ...

Leaching of ilmenite to produce titanium based materials: a …

Transformation of ilmenite to different titanium based materials by strong and weak acid, and base digestion, is discussed. Effects of temperature, concentration of acid/base, …

economics of acid leach beneficiation ilmentite

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 …