Menu
Mobile crushers can also be called mobile crushing plants, mobile crushers, etc. It is an inevitable product of high-tech crushing technology in the new era, and its main features are that it can be operated mobilely, can walk freely, and is more convenient for transitions, ensuring that the equipment While the production is safe, the work process is more reliable.
·The low grade siliceous chromite ore from Ghutrigaon Odisha India containing 16% Cr2O3 with Cr/Fe ratio of and 55% of SiO2 does not find any use in metallurgical industry and hence
This is possibly because the feed in alternative 4 was not deslimed and hence the losses in the fine fraction was less and most of the chromite particles were recovered 5 Summary and conclusions The chromite reserves in Sudan are mostly of low grade The chromite content ranges from 20% to 35% Cr2O3 This grade is too low for industrial uses
·layered intrusions contain merely chemical grade chromite ore 44wt% Cr203; Cr/Fe= which is also very which is also very important as low grade metallurgical ore charge grade 2 The wide compositional variation of chromite ores from podiform deposits is characterized by a strong reciprocal variation of Cr O3 and A1203 and by
·observed that sample is of low chromite grade and the chromite grains comprises loosely compacted crystals SEM further shows that there are gangue minerals such Silica Magnesium Aluminium and iron However the main contributing gangue mineral is silica The analysis of the different chromite grains as outlined by the 4 points on the micro
·Metallurgical grade chrome ore In the metallurgical industry chromite is mainly used to produce ferrochrome and metallic chromium Ferrochrome is used as a steel additive to produce stainless steel acid resistant steel heat resistant steel bearing steel spring steel tool steel and other special steels
High quality pellets have been developed from a low grade Indian chromite overburden containing high silica in the present study The thermodynamic hot stage microscopic and thermogravimetric analyses of the overburden and pellet mixes predict the temperature of formation of low melting slag phases at various basicity A temperature in the range of 1200
Low carbon ferrochromium When chromite and lime are melted in an open electric arc furnace and then contacted with ferrochrome silicon a low carbon percent ferrochromium can be obtained In an alternate process high carbon ferrochromium is oxidized and then blended with additional high carbon ferrochromium
·Shaking table of a pilot plant scale was used as the separator to beneficiate low grade chromite ore at Central Metallurgical Research and Development institute in Egypt as depicted in Five hundred grams of low grade chromite sample 400 80 µm was used for each experiment Prior to operation of shaking table the table was set at
Foundry grade chromite sand is widely used in various industries including foundry steel and refractory Its unique properties such as high melting point thermal shock resistance and low thermal expansion make it straightaway the best casting sand and core sand for iron and steel foundries Secondly it works well in ladle filler sands
The low Cr♯ chromite has historically been useful only as an industrial mineral for the manufacture of refractory materials such as fire brick whereas high Cr♯ chromite was sought for refining for metallurgical end uses In recent decades improvements in processing have made it possible to use either variety for both purposes
·mines are already exploiting other chromite layers within the Middle group and these are the MG2 3 and 4 [6] This might be due to depreciation of high grade chromite seams Chromite processing involves crushing milling to less than 1mm and further beneficiation using gravity circuits and spiral concentrators are widely used for this purpose
·The resources of low grade chromite is limited which constitutes about 11 million tonnes 3% of the total resources Besides meagre quantity of about million tonnes is held by others Not known and unclassified grade An overall decrease of about 12 million tonnes of resources have be recorded in NMI 2020
·Beneficiation of Low Grade Chromite Ores from Sukinda S C Maulik & K K Bhattacharyya National Metallurgical Lab oratory Jamshedpur India Abstract In order to produce directly marketable chrome ore for export and domestic industries most of the chromite ore beneficiation plants in Sukinda region treat selected rich ores with
·A Fe Cr Ni metal assayed % Fe % Cr and % Ni was achieved but the results also showed severe chromium and iron loss in final slag due to the low reduction temperature Meanwhile some researchers advocated the direct utilization of low grade chromite ores by blending with high grade ores [8 9] Evidently this idea is effective and
Rao et al 1987 shows that low grade chromite ore with Cr2O3 of about 20 30% of Sukinda region of India can be upgraded to a marketable chrome concentrate of 50% Cr2O3 with a metal recovery of about 70% by using spirals and tables in the circuit Research work of Tevfik Agacayk et al on low grade chromite ores of abandoned mines in
·For sustainability of high grade chromite resources and to satisfy the continuous demand in the future needs beneficiation of lean/sub grade ores as well as tailings is imperative An integrated approach for production of stainless steel master alloy from a low grade chromite concentrate Powder Technology Volume 335 2018 pp 103 113
·Foundry chromite sand is a natural process products of chromite through the broken screen classification chrome ore its main chemical composition of cr2o3 this kind of sand heated volume stability high thermal conductivity when in contact information with the molten metal not only has good resistance to basic slag not with ferric oxide and other chemical
·The results showed that there are % chromite and a small amount of chlorite and forsterite as the main mineral compositions the content of quartz is very low Elements as Cr and Fe are almost all present in chromite The content of Cr 2 O 3 is % and Cr 2 O 3 /FeO is The main elements in the chromite are Cr Fe Mg Al O; the
The Zambales ophiolite is the major source of chromite ore in the Philippines The chromitites are concordant cumulates and are associated with distinct chromitite bearing sequences within the mantle peridotites Refractory and metallurgical chromite deposits are spatially separated and related to different lithologic associations which crystallized from different parental magmas
An efficient process for the beneficiation of a low grade chromite ore reserves are only a few using rather expensive difficult and environmentally unfriendly methods mentioned In this laboratory research work the applicability of Mozley MGS to concentrate a low grade Turkish chromite ore with remarkably high reserves was
In this study an optimum beneficiation route was developed for an existing concentrator that processes low grade chromite deposits This objective is challenging as the grade of the ore under consideration is approximately 5% which is the lowest
·Low grade chromite samples from rejected dumps and over burdens were taken for beneficiation study to produce a material suitable for charge chrome preparation The chromite samples with about 25% Cr203 in average are ferruginous but non magnetic and contain
·the availability of huge quantities of low grade over burden which are primarily in the form of fines pelletization becomes the preferred choice for arc furnace burden preparation The low grade chromite overburden materials are generally low in iron and chromium values and rich in impurities pelletization
Chromite ores of certain deposits contain minerals of the platinum group Ir Ru Pt Pd and Rh especially in South Africa and Zimbabwe often found as inclusions in chromite silicate matrix There are several mineralization zones at the Stillwater Complex including a PGM rich zone and a low grade zone The Stillwater ore that is
·A characterization study of chromite ore from South Africa was conducted using bulk assays X ray diffraction optical scanning electron microscopy SEM automated electron probe microanalysis EPMA and quantitative evaluation of mineral by scanning electron microscopy QEMSCAN mineralogical techniques and quantitative EPMA The aim was to
·Nafziger also describes the major low grade chromite deposits in the world and gives a review of the recovery methods used b Tungsten Repositories of historical tungsten mining tailings Yxjöberg tungsten mine are potential resources for valuable metals Considering the technical viability of reprocessing the tailings extraction of
·Spirals the most common equipment for the separation of heavy minerals such as chromite are greatly affected by size distribution and the liberation degree hence the specific gravity and size of the feed particles In this study the efficiency of spirals in separation of low grade chromite particles has been investigated by studying the distribution of grade
The Cr/Fe ratio can thus be used as a proxy for the quality of chromite ore [22] The lower grade deposits with low Cr/Fe ratios high iron content and low Cr2 O3 content were as a result not mined These low grade deposits have however been exploited and successfully upgraded using physical methods such as gravity separation [1 4]
