Best Mining Solutions For Everyone, Get a Free Quote.
Need A High Quality Mining Machine For Your Project?Contact With Us
You May Also Like
BENEFICIATION STUDIES ON IRON ORES FROM ORISSA 1. Badampahar Iron Ore The sample, 3" to fines in size, consisted of rather soft yellowish lumps. Hematite and hydrated oxides of iron and small amounts of magnetite were the iron minerals present. Veins of psilomelane were observed in some specimens. Quartz, clay and some lateritic material
Beneficiation studies of Bolani iron ore ”,In: Proceedings of National Seminar on Processing of fines, NML Jamshedpur, India, 156-162.  Mahiuddin S, Bandopadhyay S and Baruah J N, (1989) “A study on the beneficiation of Indian iron ore fines and slimes using chemical additives”, International Journal of Mineral Processing. Vol.11, pp
Jun 17, 2019 · Iron ore pellets are value-added products of leftover material or low-grade iron ore and are used in steel-making. PMAI President Manish Kharbanda, in the letter, said India has 85 mtpa of pellets and 115 MTPA of beneficiation capacity, bulk of which is idling for want of iron ore at reasonable price
Jan 01, 2015 · In 20–40 years' time, all the world's quality iron ore will be gone, and only low-grade ore will be left for processing , so more efficient and economic beneficiation techniques will be necessary. Commercial iron ore flotation systems have concentrated on the removal of quartz (silica) as the steel industry requires feedstock that is < 2% SiO
Field Services Manager, Daniel Craig Smith, has been a part of the Multotec team since 2011. Daniel was born in Springs, Johannesburg, and is a qualified Mechanical Fitter and Safety Officer. Daniel brings 15 years of mill maintenance experience at Babcock, having worked on …
Utilization of aerobic and anaerobic microorganisms in iron ore beneficiation is discussed. Microorganisms such as Paenibacillus polymyxa, Bacillus subtilis, Saccharomyces cerevisiae (yeast) and Desulfovibrio desulfuricans (SRB) are capable of significantly altering the surface chemical behavior of iron ore minerals such as hematite, corundum, calcite, quartz and apatite. Differing mineral surface affinities of microbial cells and metabolic products such as proteins and polysaccharides can be utilized to induce their flotation or flocculation. Mineral-specific bioreagents such as proteins are generated when bacteria and yeast were grown in the presence of hematite, corundum, calcite, quartz and apatite. This study has demonstrated the utility and amenability of microbially-induced mineral beneficiation of iron ores through bacterial and yeast cells and their metabolic byproducts.
Article Citation: Dr. Rubina Sahin. (2020). BENEFICIATION OF LOW/OFF GRADE IRON ORE: A REVIEW. International Journal of Research -GRANTHAALAYAH, 8(8), 328-335. https://doi.org/10.29121/granthaalayah.v8.i8.2020.934
An attempt has been done to collect information regarding methods apply for the recovery of iron values from various Mechanical & Chemical techniques. The main aim of this review paper to determines the Industrial practice and fundamental research activities for the up gradation of low/ off grade iron ore. Practically mechanical separation and float flotation methods applicable in different composition and size of iron ore with different recovery percentage of Fe. the Iron content in the concentrated ore is obtained with reduction in SiO2 and Al2O3 after beneficiation operation on it. After various beneficiation processes Fe content could be enriched from 38% to 60%
The rapid industrialization in the field of iron & steel industry increases the demand of iron ore. From last two-three decades, consumption of iron ore has increased rapidly. In the metallurgy of iron ore, blast furnace utilize different form of products of iron ore like lumps (which used directly in the furnace) & pellet / sinter which are normally agglomerates of iron ore fines. Both the form of iron ore contain < 2% of Al2O3 (alumina). India is one of the countries which have reserves of best quality of iron ores, around 14 Billion tones. These ores contain huge quantity of physical impurities such as clay or other earthy impurities which can be easily removed by physical process and thus, iron content increase simultaneously ( Gururaj and Ramchanadran, 1979., Roy choudhury and Dash, 2003) the states which have iron ore mines are Orissa (Barbil, Cuttack, Gua, Joda, Mayurbhanj and Keonjhar) Karnataka ( Donamalli, Kudremukh, Pathikonda, Vyasanakere) Jharkhand ( Gua , West Singhbhum) Chhattisgarh (Bailadila, Dalli-Rajhera) Maharashtra ( Rantnagiri) (Raoand Kumar, 2003., Rajuand Prabhakar, 2003). Indian iron ores are generally quite soft and friable in nature and generates significant amount of fines while mining of ores, physical processing and process of handling. Many literatures, highlights, that mining and physical processing of iron ore, produce large amount of slimes and fines, typically 35% & 25-10% of run of mines. (Sengupta and Mukherjee 2003) which is a great concern of loss of iron values in tem of economy and it also badly effect the component of the environment
Due to gradual depletion of high-grade iron ores (65-77 % of Fe) has develop the maximum possibility of utilization of low-grade iron ore. But this required much more economical support. Many literature highlight that upgrading the fines ores utilizing this fraction in the sinter feed up to 40% by micro-balling of the sinter prior to sintering (Shrivastava and Prasad 2001). The simple way of washing with water is not enough process to change Al2O3/ Fe and Al2O3/ SiO2 ratio in the concentrate much from the feed. The ratio of Al2O3/ SiO2 in low grade iron is high, which make it not suitable to use in metallurgy operation directly without prior beneficiation. Many literatures also explained that ores with high content of alumina or silica deteriorate the blast furnace and also reduce the its efficiency. Including reduction in productivity of sinter plant. During physical operation like mechanical sizing and normal washing process with water only remove earthy impurities not the impurities chemically bonded with the iron ore such as Al2O3, SiO2, P, S, As, and C or other elements in trace amount. So, in order to increase the productivity of blast furnace, ore required having Al2O3/ SiO2 ratio less than 1. There are many process implemented to enhance the Fe% in their ores (Table 1). Few beneficiation process in discuss in this paper which are popular now a days
The objective in beneficiation of iron ore/ fines/ slimes is to treat mechanically, chemically and other methods. The beneficiation process can be classified into two categories, namely Mechanical Separation & Float Flotation by using surface-active agent or flocculating agent (Figure 1)
In recent years, lots of developments have been reported in the field of iron ore processing all over the world. The prominence is to develop a method for the beneficiation of low grade/slimes/fines iron ore which should be cost effective. It is also very necessary that beneficiated ore should be suitable for sinter, blast furnace & in pellet making. Few among reported method, found to be effective in the development features in the processing equipment are as:
Copyright © 2021 Facdori Machinery All rights reservedSitemap