Low-grade chromite of Muslim Bagh, Balochistan, Pakisktan was beneficiated to produce chromite concen- trate by cationic flotation using disodium n-octadecyl sulfosuccinamate as collector. Effect of various parameters such as grind size, pulp density, pH, and conditioning time on the overall grade and recovery of chromite was also investigated.
Sustainable Development through Beneficiation of Low grade Chromite Ores 1 Sustainable Development through Beneficiation of Low Grade Chromite Ores Prabhash Gokarna Amit Ranjana CR Nayaka and Y Rama Murtyb a Tata Steel Limited Sukinda Chromite Mines Sukinda Orissa India b Tata Steel Limited . Get Price
Chromite ores are primarily used for extraction of chromium, which is an expensive metal. For low grade chromite ores (containing less than 40% Cr 2 O 3), the chromium extraction is not usually economically viable. India possesses huge quantities of low grade chromite reserves. This deposit can be utilized after proper physical beneficiation.
recovery of chromium from lower-grade ores are receiving more attention. With present technology, most of the low-grade ores cannot compete with the higher grades. An estimate of the world's lower-grade chromite ores is given in Table I, which was derived from surface geology and information on reserves, and indicates only orders
The ferruginous type ore also contains a considerable quantity of in-situ fines (~20% particles below 0.5 mm) that compound the beneficiation problem.In many places, in India and abroad, mined non-marketable off-grade and low grade chromite ores are upgraded by using either simple classification techniques like screw classification, hydrosizing ...
A low grade chromite from Nausahi, Keonjhar District, assaying 42.52% Cr2O3, 16.62% FeO, 7.98% Al2O3, 15.44% MgO, 14.24% SiO2 and 0.051% P was beneficiated in this laboratory. Talc and serpentine were the principal gangue minerals. Straight tabling the sample at -65 mesh produced a concentrate assaying 55.4% Cr2O3 and 19.47% FeO (Cr/Fe ratio 2.5) with a …
Beneficiation of Disseminated Low-Grade Sudanese Chromite Ore in Gedarif State at Umm Saqata-Qala Elnahal
The ferruginous type ore also contains a considerable quantity of in-situ fines (~20% particles below 0.5 mm) that compound the beneficiation problem.In many places, in India and abroad, mined non-marketable off-grade and low grade chromite ores are upgraded by using either simple classification techniques like screw classification, hydrosizing ...
This paper reviews the major deposits of lower-grade chromite in the world, and a wide variety of methods used for the recovery of chromium from them. Gangue materials in more coarsely sized ores can be separated by gravity means, whereas flotation techniques are required for finer-grained materials. However, unless there is considerable iron in the ores, physical means …
"Tata Steel has its captive chromite resources at Sukinda, Orissa. They contain two ore types, i.e. (i) Ferruginous and (ii) Siliceous. The generation of off-grade ores is an increasing trend and simultaneously customer quality requirements are becoming ever more stringent. The ferruginous type ore also contains a considerable quantity of in-situ fines (~20% particles …
This review assesses all chromite beneficiation methods, along with a detailed examination of spiral concentrators, which is used as a conventional method for chromite …
The beneficiation of low grade (Cr2O3% 26.88) chromite ore has been investigated using table. Optimization has been carried out using box-behnken statistical design (BBD).
low and sub-grade ore (10-38% Cr203). Beneficiation is mostly limited to size reduction, desliming and classification. The yield is low of about 25-35%. During beneficiation, sub grade intermediate products of about 35-40% Cr203 get generated which finds very little or no use and these have been accumulating in the mines.
Article: Beneficiation of low grade chromite ores; experiences at Tata Steel. Tata Steel has its captive chromite resources at Sukinda, Orissa. They contain two ore types, i.e. (i) Ferruginous and (ii) Siliceous. ... Rajeev,; Sastri, S.R.S. 1997: Beneficiation of off-grade chromite ores -improvement of chrome : iron ratio Journal of Mines ...
Keywords: beneficiation, cationic flotation, disodium n-octadecyl sulfosuccinamate, chromite ore, Pakistan chromite, low-grade chromite Table 1. Average chemical analysis of the Muslim Bagh, Balochistan, Pakistan low-grade chromite ore Constituents Percentage Cr 2 O 3 38.06 Fe 2 O 3 13.80 SiO 2 20.02 Al 2 O 3 10.50 MgO 14.40 LOI 3.20 86
Therefore, chromite mining and chromite beneficiation processes maintain their importance and moreover, growing chromite demands necessitates technology capable of using low-grade ores.
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Beneficiation Problems Low grade chrome ores required beneficiation by way of reduction of iron or silica contents or both from the ore for their utilisation in any of the above mentioned industries. Table 3.3, at the end of this chapter, gives the beneficiation test results of the different chromite samples investigated in condensed form ...
Request PDF | Low-Grade Chromite Beneficiation Through Spiral Concentration: A Review from the Turkish Market Perspective | Chromite production is required for numerous industrial applications ...
Energy saving Chemical Beneficiation Method of Improving Low Grade Nigeria Chromite Ore for Use in Steel Industries * 1Kuranga I. Ayinla, Alafara A. Baba, ... Abstract- This study detailed how direct acid leaching can be used to extract high grade chromite from low grade chromite ore for utilization in the steel industry. The suggested method ...
The beneficiation studies of Suresh et al. (1981), concludes that low grade chromite ore of 16–25% Cr2O3, of Sitampundi area of India, cannot be upgraded by using tabling and flotation techniques, to meet the metallurgical grade due to the intimate association of …
The detailed study of chromite ore beneficiation processes reveals that the opportunities still exist to recover chromite values from the low/sub-grade ores and tailings using the conventional beneficiation processes.
processing of low grade Sudanese chromite using a laboratory shaking table separator and dense media separation [3, 22] . This investigated study aims for modeling and optimization of parameters process via Central Composite Design on beneficiation of massive low-grade Sudanese chromite by using pilot plant shaking table as the separator. 2.
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 earlier.2 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 grade processed in Turkey.
It was clearly demonstrated that MGS is an ideal beneficiation equipment for fine fractions of a low grade Cr 2 O 3 ore. Based on the experimental results, a principal flowsheet …
The results gathered from shaking table test were not satisfactory due to low Cr 2 O 3 recoveries. However, a chromite concentrate with 46·22%Cr 2 O 3 grade and 66·1 wt-%Cr 2 O 3 recovery was obtained by the combination of shaking table and MGS. It was clearly demonstrated that MGS is an ideal beneficiation equipment for fine fractions of a ...
Keywords: chromite, beneficiation, spiral concentrator, teetered bed separator 1. Introduction The beneficiation of chromite (Burt 1984; 1999) and processing of its low-grade ores (Ağaçayak, 2004; Amer and İbrahim, 1996; Sönmez and Turgut, 1998) are traditionally performed using gravity concentration methods.
This article reviews the major process flow sheets in practice for the recovery of chromite values from various types of ores and critical issues related to chromite ore …
