hydrometallurgy of chromite ore in Oman

Oman Chromite hits new production record in 2022

Oman Chromite Company, partly owned by the Omani government represented by Minerals Development Oman (MDO), has announced a record production of 105,992 tonnes of chromite ore …

Beneficiation of South African chromite tailings using

Chromite tailings ore sample was obtained from a MG chromite processing plant in the Western Limb of the Bushveld Igneous Complex (BIC), South Africa. Characterisation studies were carried out to quantify the different mineral phases, their liberation and association with each other [7]. Chemical composition of different sizes of the feed ...

Leaching of a low grade Egyptian chromite ore

Hydrometallurgy. Volume 43, Issues 1–3, November 1996, Pages 307-316. Leaching of a low grade Egyptian chromite ore ... (Fe) and chromium (Cr), is vital for the production of stainless steel. FeCr is produced from chromite ore, the most important source of Cr units. FeCr producers are only paid per mass unit of Cr content in the …

Comparative study of alkali roasting and leaching of chromite …

Chromite ore belongs to the spinel group with the general chemical formula of XY 2 O 4, where X and Y represent divalent and trivalent metal ions, respectively. ... Hydrometallurgy, 152 (2015), pp. 113-119. View PDF View article View in Scopus Google Scholar. Farrow et al., 1987.

Minerals | Free Full-Text | Hydrothermal Chromitites from the Oman

The role of water-rich solutions in the formation of chromitites has been the matter of controversy. We found small chromite concentrations (chromitites) in diopsidites, precipitated from high-temperature hydrothermal fluids, in the mantle to the crust of the Oman ophiolite. Here, we present petrologic characteristics of the hydrothermal …

23.3: Hydrometallurgy

Heap leaching is generally economically feasible only for oxide ore deposits. Oxidation of sulfide deposits occurs during the geological process called weathering. Therefore, oxide ore deposits are typically found close to the surface. Most uranium is found in the upper crust, occurring naturally as U 4+ and U 6+ with an average abundance of 2 ppm.

Leaching of a low grade Egyptian chromite ore

Leaching of a low grade Egyptian chromite ore ... KANUNGO S.B., JENA P.K., 1988, Reduction leaching of manganese nodules of Indian Ocean in dilute hydrochloric acid hydrometallurgy, 21 (1), 41–58. MAGRITZ M., BRENNER I.B., 1972, The geochemistry of a lenticular manganese ore deposits (Um– Bogma, Southern Sinai) Miner–Deposita, 14, …

MDO And Oman Chromite Sign Agreement for Chromite Ore …

Last year, Oman Chromite Company produced the highest quantity of chromite ever. The company produced 45,194 tons of chromite ore during 2021 compared to a production amount of 10,597 tons in 2020, a sharp increase of 426 percent.

Depleting reserves impact Oman Chromite's 2023 production

MUSCAT, FEB 18. Oman Chromite Company, a public shareholding company traded on the Muscat Stock Exchange (MSX), has reported a 44% slump in the production of chromite ore during 2023 – the result of depleting ore reserves in its existing mining concessions in north Oman.

Oman Chromite posts strong output growth in H1

Publicly traded Oman Chromite Company produced 25,900 tonnes of chromite ore in the first half of 2022, a significant increase over the corresponding output of 9,349 tonnes a year earlier. After tax, the firm earned a profit or RO 653K, representing an increase of 245 per cent compared to RO 266K a year earlier.

Executive Management – Oman Chromite Company (S.A.O.G)

Rashid Al-Badi Financial and Admin affairs and IT systems Manager. Gustavo Brenno Mining Planning & Business Development officer. Eduardo Abrahao Mine Geology & Exploration Manager

Chromite-Rich and Chromite-Poor Ophiolites: The Oman Case

Abstract. Chroinite deposits in Oman belong dominantly to the concordant structural type, meaning that these have been intensely deformed by plastic flow and tectonically …

Mission, Vision, Values – Oman Chromite …

Contribute to sustainable development in Oman by being a highly efficient mining company for the production of chrome ore and achieving the highest added value economically. Vision. To be the reference company in the …

Metallurgical Chrome Ore – Oman Chromite Company …

We are providing chrome ore in high grade or low-grade seeking the market requirements and the customer's desire. ... Oman eGovernment. Vision 2040. Capital Market Authority. Muscat Stock Exchange. Ministry of Commerce. Ministry of Energy and Minerals. Financial Statements. Annual Report 2023.

A clean and efficient leaching process for chromite ore

2.2. Experimental apparatus and procedure. The experimental apparatus and procedure were identical with our previous work, and all experiments were performed in a 1.0 L pressure-resistant autoclave (Chen et al., 2013).The reactor was loaded with 75 g chromite ore, 353 g analytical grade KOH (mass ratio of alkali-to-ore is 4:1), and an …

Chromite deposits in the northern Oman ophiolite: …

Chromite deposits in the northern Oman ophiolitic complex occur in three structural contexts, i.e., (1) at the base of the cumulate series, (2) in the top kilometer of the mantle sequence, and (3) in the deeper parts of the mantle. Types 1 and 2 are characterized by the diversity of interstitial silicates where in decreasing order of abundance olivine, …

Preparation of chromium oxide by hydrothermal reduction …

Introduction. Chromium oxide (Cr 2 O 3) is widely used in various industrial fields, such as metallurgy, pigment, refractory material, catalyst, and wear–resistant material industries (Wang et al., 2007).It is prepared by reprocessing chromium salts including sodium dichromate (Na 2 Cr 2 O 7 ·2H 2 O) and chromic anhydride (CrO 3), which are …

Pressure oxidative leaching of Indian chromite ore in …

A novel process for leaching chromite ore has been proposed. Compared to the traditional alkaline roasting process, the new hydrometallurgical process lowers effectively the reaction temperature and enhances the leaching efficiency through pressure oxidative leaching with pure oxygen (O 2) in concentrated sodium hydroxide (NaOH) …

Refractory Chrome Ore – Oman Chromite Company (S.A.O.G)

The company follows a series of processing and inspection processes to ensure the quality of the Refractory Chrome Ore, hence, the final raw material becomes quality guaranteed and can be used directly without the need for any other treatment. ... Oman eGovernment. Vision 2040. Capital Market Authority. Muscat Stock Exchange. …

Oman Chromite invests in low-carbon ferrochrome plant in …

Publicly traded Oman Chromite Company (Oman Chromite), in a filing to the Capital Market Authority (CMA), has announced the signing of a purchase agreement worth RO 500,000 for a 20 per cent stake in a low–carbon ferrochrome plant under development in Sohar Port and Freezone.

Annual Report 2020 – Oman Chromite Company (S.A.O.G)

Type a keyword ... Home; About. About Us; Mission, Vision, Values; Board of Directors; Executive Management

Chromite deposits in the northern Oman ophiolite: …

Chromite deposits in the northern Oman ophiolitic complex occur in three structural contexts, i.e., (1) at the base of the cumulate series, (2) in the top kilometer of the …

Oman Chromite bags 8 exploration licenses from PAM

The ore is either exported in raw form or crushed based on global demand. Metallurgical grade chromite – which is used in the production of steel – accounts for the bulk of Oman Chromite's exports, while the remainder comprises refractory grade ore, typically used as heat-resistant material in kilns.

Chromite-Rich and Chromite-Poor Ophiolites: The Oman …

Location of Chromite Bodies within the Oman Ophiolite As observed in other ophiolites, the chromite occurrences in Oman are usually located within the transition zone at the top …

Physical Chemistry of Roasting and Leaching Reactions for …

Chromium is mainly used for the production of stainless steel, in electroplating, as pigments and in leather and refractory industries. The natural resource of chromium is the chromite ore, which is a spinel (Fe 2+, Mg)[Cr,Al,Fe 3+] 2 O 4, and is often present with gangue minerals such silicates.Traditionally chromium chemical extraction has been carried out …

MDO, Oman Chromite sign deal for exploration of …

Oman Chromite Company has signed an agreement with Minerals Development Oman (MDO) for joint exploration and prospection of chromite ore in two exploration sites located at the Governorates of Al …

Oman Chromite, MDO partnership to unlock new chromite …

Oman Chromite Company, a publicly traded company listed on the Muscat Stock Exchange (MSX), has signed an agreement with Minerals Development Oman (MDO), the state-owned mining and minerals processing flagship of the Sultanate of Oman, for the joint exploration and prospection of chromite ore at two exploration sites located …

Green metallurgical processing of chromite

A new green metallurgical process for chromite ore has been proposed and developed to solve the serious environmental problem in the traditional production process of chromate. In the new process, the oxidation of chromite ore is carried out in sub-molten potassium hydroxide at 300 °C. ... Hydrometallurgy, 43 (1996), pp. 307 …

Geophysical Hunt for Chromite in Ophiolite

Mubarik and Muhammad, (2013) used resistivity, gravity and magnetic methods for exploration of chromite ore deposit at Oman. They reported that mining operation have been performed in the area ...

Leaching of a low grade Egyptian chromite ore

ELSEVIER Hydrometallurgy 43 (1996) 307-316 hydrometallurgy Leaching of a low grade Egyptian chromite ore A.M. Amer a,*, I.A. Ibrahim b a Geology Department, Faculty of Science, Alexandria University, Alexandria 21526, Egypt b Central Metallurgical R&D Institute, Helwan, Cairo, Egypt Received 15 September 1995; accepted 16 …