Assessment of South African Chromite Sand for Binder
There is limited literature on the use of chromite sand, especially South African chromite sand, for both binder jetting and conventional casting processes. This study, therefore,
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Assessment of local chromite sand as 'green' refractory raw
In this study, chromite sand has been selected as the suitable alternative to remedy the two main issues raised about the use of silica in foundries. The choice of chromite sand was
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Chrome Trading Rand York Minerals/home
RY. Rand York Minerals (Pty) Ltd processes and markets foundry chromite sand and chemical grade chromite sourced from various suppliers in Southern Africa. All material
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Characterisation of South African Chromite Middle
2020year7month27day South African chromite occurs within the Bushveld Igneous Complex (BIC) and is considered as stratiform chromite [1]. The BIC holds three quarters of the world’s
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(PDF) Assessment of South African Chromite Sand
2022year12month1day Chromite sand is used as an alternative refractory material to address the shortcomings of silica sand. This study assessed the suitability of South African Chromite sand for rapid...
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Resource Intensity Trends in the South African
2022year10month28day South Africa is the largest global supplier of chromium. This study investigates the impact of cleaner production process improvements on selected resource intensities of the South African
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Grain size distribution of chromite sands from South Africa
Context 1. ... size distribution analysis was performed on standard South African sand (SA) and on chromite sands produced in the Neyriz enrichment plant (NE) ( Figure 2 ). The
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(PDF) Assessment of local chromite sand as 'green' refractory
Chromite sand is an alternative refractory sand for metal casting applications, and is abundant in South Africa. The present study investigated whether this aggregate has
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OPTIMISATION OF A RESIN-COATED CHROMITE SAND
2021year12month14day Chromietsand is volop beskikbaar in Suid-Afrika. ʼn Ontleding van die fisiese en chemiese eienskappe van ʼn in-laboratorium bedekte, plaaslik verkrygbare
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Characterization of Foundry Waste Sand Streams for
2017year3month18day The local South African foundry industry discharges large volumes of waste sand each year, with estimates for silica and chromite sands of 250,000 and
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Chromite - ScienceDirect
2016year1month1day Waste of Foundry Sand Industry. The vast majority of chromite sand used in the foundry industry originates in South Africa (Amcol Metalcasting, 2013). South Africa is the reference standard for quality and has the most reserves to supply the global foundry industry. Chromite sand is the best sand medium for chilling metal.
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Mining Minerals - Independent Mineral
2023year6month8day Who We Are. Mining Minerals – Independent Mineral Distributors has been operating since 1988 and had long-term contracts with major mines in and outside of South Africa. The company has customers
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Manganese, chrome industries seek answers to South Africa
2022year9month5day Meanwhile, participants in the non-metallurgical chromite market have said transport difficulties have supported prices, describing “huge costs” to truck material from Johannesburg and Rustenburg in South Africa to Maputo, as a way to skirt the major backlogs in Durban and Richards Bay, with demurrage costs at one point of up to
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Rand York Minerals celebrates 30 years delivering
South Africa is one of the major producers of chrome sand in the world. South Africa has approximately 78% of global chrome ore reserves “Chromite sand was introduced into the foundry industry in the early 1960s when zircon sand was in short supply. It presented new opportunities in the refractory and foundry markets for chromite.
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Samancor Chrome Mines - Mining Technology
2013year10month20day Samancor’s operations are centred on reserves held in the Bushveld layered intrusive complex, which contains approximately 70% of the world’s economic chrome ore reserves in the Lower Group (LG) 6 and Middle Group (MG) 1 seams. LG6 has a Cr2O3 content of 43-47% and a Cr:Fe ratio of 1.6:1, while MG1 averages 42% Cr2O3
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Chromite chemistry of a massive chromitite seam in the
2020year3month3day The 2054.4 ± 3-Ma Bushveld Igneous Complex (Scoates and Friedman 2008) in South Africa is the largest known igneous intrusion in the world.It stretches approximately 350 km north to south and 450 km east to west and has an estimated total thickness of 9 km (Vermaak 1976; Eales and Cawthorn 1996).The BIC was intruded
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Effect of basicity on beneficiated chromite sand smelting
2018year5month15day The beneficiated sand chromite was briquette using bentonite as a binder in 2 wt.% before it was smelted in a submerged electric arc furnace to produce ferrochrome. Basicity was controlled by the addition of limestone and it was varied from 0.4-1.6. ... J. South. Afr. Inst. Min. Metall. ... South Africa, 2004), pp. 103 – 107 ...
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Characterisation of South African Chromite Middle
2020year7month27day South African chromite occurs within the Bushveld Igneous Complex (BIC) and is considered as stratiform chromite [1]. The BIC holds three quarters of the world’s viable chromite ore deposits [2], and has an aerial 2extent of 65000 km with thickness of about 7 to 8 km [3]. The BIC consist of western, eastern and the northern limbs.
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Chromite: The Next Generation HA International LLC
Chromite sand formulated in prepared sand mixtures for the core room or in green-sand molding applications will be influenced by the screen distribution. The CastTherm family of chromite sand is a naturally occurring, sub-angular chromite aggregate mined in the heart of the Bushveld Complex in South Africa, in partnership with Rand York Minerals.
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Chromite: The only mineral ore of chromium
Stratiform, Podiform, and Beach Sands. Small amounts of chromite are found in many types of rock. However, chromite deposits that are large enough for mining are generally found in: 1) stratiform deposits (large
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Chromite Sand Minerals Technologies Inc.
Hevi-Sand®Brochure. Cr2O3 -46% min. SiO2 -1% max. AFS of 25-70 with a broad distribution. Low thermal expansion. High thermal conductivity. Hevi-Sand® Chromite Sand is a versatile, unique aggregate, unlike ordinary
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Chromite Request PDF - ResearchGate
2016year12month31day 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 ...
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Chrome Ore - an overview ScienceDirect Topics
A South African chrome ore crushed and suitably graded is finding application in steel foundries and is believed to have very superior refractoriness. It is finding application as a facing material in cores and moulds for heavy steel castings. The chromite sand has a specific gravity of about 4.50. The thermal expansion of bentonite-bonded ...
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Why Chromite Sand Minerals Technologies Inc.
in the manufacturing of larger castings, to use chromite sand as the moulding material to promote a thicker solidifying skin as the molten metal rises up the mould face. This reduces the risk of it being washed away which allows faster filling times. This high heat abstraction rate also aids in inhibiting penetration and burn on defects.
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(PDF) Sustainability assessment of thermal and
2022year11month1day Chromite sand is an alternative refractory sand for metal casting applications, and is abundant in South Africa. The present study investigated whether this aggregate has better overall ...
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(PDF) Ophiolite Chromite Deposits As a New Source for
2020year8month31day BSE images of (A) South Africa chromite sand, (B) massive chromitite sample from Aetoraches, (C) mixed serpentine-chromite grains in the Neyriz chromite sand. Sustainability 2020, 12, x FOR PEER ...
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Chrome Sand Applications - African Pegmatite
2023year10month15day Unlike conventional sand moulds, chromite moulds can be hard to recover and reuse should there be moderate-to-high amounts of silica present. This is due to a greater likelihood of the chrome becoming contaminated by the silica, and thus its refractoriness is reduced(4). ... Evaluation of South African Chromite sand sintering
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Industrial minerals: Chrome and chromite market guides
The majority of China’s chromite imports are sourced from South Africa (which supplied 79% of Chinese chromite imports in 2019), Turkey, Kazakhstan and Zimbabwe. China also imports chrome ore from India, although in 2020 it was reported that India’s government proposed a ban on exports to China due to concerns about depleting Indian ...
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Chromite sector lags behind dominant chrome ore prices
2022year3month15day Fastmarkets’ weekly chrome ore South Africa UG2/MG concentrates index, cif China, rose to $208 per tonne, from $202 per tonne previously, in the week to February 22, while its fortnightly price assessment for chromite, foundry, 46% Cr2O3 min, wet bulk, fob South Africa, climbed to $215-230 per tonne, from $215-225 per tonne.
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