Chromite Sand Exploration
Sustainability | Free Full-Text | Ophiolite Chromite Deposits …
The foundry chromite market is dominated by South Africa production deriving from layered intrusion chromite deposits. Chromite sands from ophiolite chromite deposits, normally used for the metallurgical-grade chromite market, were tested as an alternative starting raw material to produce chromite foundry sands.
Chromite chemistry of a massive chromitite seam in the
The UG-2 reference chromitite is consistently massive (> 90% modal chromite; Fig. 3b) with euhedral to subhedral chromite grain diameter ranging from …
Chromite Sand Testing
Typical Chromite Sand Testing • South African Chromite Sand is the world standard for metalcasting and foundry applications, however there can be variations in the quality of chromite sand depending on grade, location, mining and beneficiation methods. • There are many tests that are available to provide insight into the quality and ...
Application of Chromite sand in Casting Production
Chromite sand belongs to the category of special sand in modeling materials. Its main mineral composition is FeO·Cr203, density is 4.0~4.8g/cm3, Mohs
Chromite compositional variability and associated PGE
The Gomati and Nea Roda ophiolites are located into the Serbo-Macedonian massif of the Chalkidiki peninsula (Northern Greece). The present work focuses on the variability of platinum-group elements (PGEs), geochemistry, spinel mineral chemistry, and platinum-group minerals (PGMs) — base metal minerals (BMMs) assemblage in …
Reclamation and Application of Composite Chromite Sand
Reclamation and Application of Composite Chromite Sand The source of the rejected chromite sand included two aspects： （ 1 ）The rejected sand produced from
Chromite | Energy & Mining
Chromite, a brownish black cubic mineral belonging to the spinel group, is the only ore mineral from which metallic chromium and chromium compounds are obtained.
OPTIMISATION OF A RESIN-COATED CHROMITE SAND …
Chromite sand is often used as an alternative to silica sand, especially when the moulds require a low thermal expansion of 0.6%, high refractoriness, and a high specific gravity of 4.66. Chromite ...
Formation of podiform chromitite deposits: implications from …
This would favour the formation of metal alloys as inclusions in chromite and explains the occurrence of discrete mineral phases of Ir, Os, and Ru often observed in podiform chromitites. In contrast, sulfides in the groundmass between chromite grains suffer a strong alteration caused by late stage fluids whereby sulfides and Pd are …
Integrated geological and geophysical studies for …
In Orissa, India, chromite deposits occur in a NE-SW trending belt as discontinuous pods associated with tectonically deformed and metamorphosed ultramafic rocks. Geological mapping and detailed geophysical survey (including gravity, magnetic, electrical, and electromagnetic methods) for exploring chromite were conducted in a area at …
Chromite geophysics; an example of synergistic geophysical exploration
Laboratory and field measurements were made in a study of a small number of chromite deposits in the Josephine ultramafic complex of northwest California, to examine their physical properties and to search for possible diagnostic geophysical signatures.
Geophysical exploration for chromite deposits: Review and …
Smaller concealed podiform chromite deposits have been found by geophysical exploration in Turkey, Greece, China and other countries as well.
Full article: Chromite, platinum group elements and nickel
This work stems from a reconnaissance survey by GNS Science of the exploration potential for chromite ± platinum group element (PGE) deposits that was commissioned by the New Zealand Ministry of Economic Development in 2011 (Brathwaite et al. Citation 2012a, Citation 2012b; ...
Chromite: The only mineral ore of chromium metal
Chromite is found in beach sands derived from the weathering of chromite-bearing rocks and laterite soils that developed over peridotite. Beach sand rich in chromite and other …
Minerals | Free Full-Text | Application of Satellite Remote …
Integrated methods, instead, were somewhat successful for chromite exploration; for example, the combination of geological, gravity, magnetic, and electrical surveys . Satellite remote sensing has proven capabilities in locating exploration targets through the discrimination of hydrothermal alteration zones, structures, and lithologies [6,7].
Chromite in the Platreef (Bushveld Complex, South Africa …
The regional distribution and chemical composition of massive and disseminated chromitites through a Platreef sequence and along a strike distance of over ∼20 km were investigated to correlate them both within the framework of the northern limb and to the eastern and western limbs of the Bushveld Complex. The chromitite layers …
Chromitite layers indicate the existence of large, long-lived, …
We argue on textural and mass balance evidence that these chromitite layers formed by in situ crystallisation and that their origin can be best understood in the …
Chromite
Explore the benefits of Sibelco premium-quality chromite sand for foundry, ceramics, glass and brake linings.
Chromite resources of the podiform chromite deposits and …
USGS Publications Warehouse. Exploration models for podiform chromite in the Medford-Coos Bay quadrangles must consider the facts that (1) one deposit occurs for every 5 …
The Canadian Chrome Company | (CACR: CSE) – Chromite, …
CCC is an exploration stage company that is participating in the discovery, delineation and development of chromite deposits in the James Bay Lowlands of Northern Ontario.
Prospecting for ophiolite-type chromite deposit in Sartohay, …
Chromite is a critical mineral that is of great significance for the development of metallurgical, chemical, and other industries. In order to study the deep ore prospecting methods of ophiolite-type chromitite, we have carried out plane-profile geological and mineral surveys, as well as high-precision gravity, magnetic, and controlled source audio …
UAV magnetometry for chromite exploration in the …
Chromite occurrences in ophiolite complexes present valuable natural resources and require sophisticated geophysical exploration methods. As chromite does not exhibit significant geophysical anomalies, we propose an indirect method of detection by surveying for magnetic anomalies caused by the serpentinization of the chromite host …
The Effect of Particle Size Distribution and Liberation
Mining, Metallurgy & Exploration - Spirals, the most common equipment for the separation of heavy minerals such as chromite, are greatly affected by size distribution and the liberation degree...
Chromite Sand Application Examples In Casting Production
The chromite sand that has been stored for a long time and whose ignition loss exceeds the standard should be calcined at a high temperature before use. In order to ensure the quality requirements of raw chromite ore sand, strict inspection of the chromite ore sand entering the plant is required in accordance with regulations.
THE HEVI-SAND PROCESS – South African Institute of …
Foundry grade chromite sand production methods and acceptance specifications have changed little in the last 50 years. This paper reviews the old, the existing, and the new "Hevi-Sand Process" used to produce foundry chromite sand. The advent of new mining and processing technology, coupled with changes over the years …
A General Perspective on Geophysical Methods in Mineral Exploration
Geophysical methods are known to play an indispensable role in mineral exploration. Over the years, they have undergone a phenomenal improvement in the design and development of equipment, methods and precision of data acquisition, processing and interpretation.
Structural analysis and susceptibility inversion based on …
The Koh Safi Chromite Ore Deposit is located in Afghanistan's northern–northeastern end of the Kabul–Kandahar ophiolite zone. Sedimentary formations, delayed volcanic, and ultramafic rock groups, including peridotites and serpentinites, could all have been found in the Koh Safi area, where structural discontinuities with the two …
What is foundry sand and how is it used in foundry …
Foundry grade chromite sand is a complex compound of various elements; chromium (Cr 2 O 3), aluminium (Al 2 O 3), silica (SiO 2), and magnesium oxide (MgO). Chrome's resilient characteristics make it the material of choice for many foundry applications. It is also used in molds for automotive castings and as a well filler in steel production.
chromite sand introduction | HAIXU
Chrome ore sand, also known as chromite sand, is a special sand for foundry. It is a natural spinel mainly made of chromite. It is crushed, ground, and sieved to a specified particle size, suitable for modeling (core making) sand.
Geovic Taking Another Look at New Caledonia's Chromite Sands
Union Oil Company of California (UNOCAL) recognized the economic chromite mineral sands deposits in New Caledonia in the early 1980's and applied for several exploration licenses. Early nickel mining also discovered chromite deposits in New Caledonia over the past century.