Assessment of effective design of tailing pond for safe. Safety is no accident, was prompted by tailings dams disasters and rising global concerns about the safety, management and impacts of storing and managing large volumes of mine tailings. Among the products generated in the processing of iron ore, the mud washing, in most cases, is stored in tailing dams without a commercial use. The natural sand was originally excavated from the lower reaches of yangtze river and had an apparent density of 2. The word tailings is sometimes applied to include coarse mine waste. The results showed that 80% of the tailings particles were 150m in size and major. The iron ore tailings aggregates concrete exhibited a good mechanical. The influences of iron ore tailings as fine aggregate on. However, approximately 1015% of the iron ore mined in india is unutilized, even now, and is discarded as tailings.
This is an open pit mine and it is impractical for the tailings to be deposited in the workings. Storage and disposal of iron ore processing wastewater. Kudremulah iron ore company ltd, india 11 india kiriburu iron ore mine 60 sweden lkab iron ore mine 8 this iron ore contains large amount of fine grain iron minerals which are not suitable as feed for a blast furnace table2. We have a metallurgical test for every possible mineral type and treatment.
The availability of land for di sposal of tailings is a problem of concern. The filler is iron ore tailings in particle form and approximately irregular in shape with particle sizes 150, 212 and 300 m from iron ore beneficiation plant in itakpe, kogi state in the middle belt region of nigeria. Tailings management drying out in the desert australian. Iron ore tailings in the production of cement tiles. The potential of iron ore tailings as secondary deposits of rare earths article pdf available in applied sciences 914. The exploration of iron ore in small mining companies results in a large amount of unrecovered fine material, repre senting 35% of the run of mine. Reuse of iron ore tailings in the production of geopolymer mortars. Sustainable handling of iron ore tailings is of prime concern to all. Pdf generation and treatment of iron ore tailings researchgate. Tailings mineral industry solution westech engineering, inc. In future it may become economically viable to extract the iron content from tailings, and due to the high cost of land and environmental factors it is worthwhile attempting to minimize tailings volumes. These discarded tailings were stored in the tailing pond. Tailings basin stability and environmental protections what are tailings. Particularly, in the iron ore industry, although 99% of the generated.
Recovery of iron from tailings of yangla copper ore by. Tailings are what are left after ore has been mined, crushed, processed and stripped of its economic metals. The aim of this research was to investigate the possibility of utilizing iron ore tailings iot to replace clay as aluminasilicate raw material for the production of portland cement clinker. Characterisation and applications of iron ore tailings in building and construction projects francis atta kuranchie edith cowan university follow this and additional works at. For this purpose, two kinds of clinkers were prepared. For this website the term tailings refers to the slurry waste output from the processing plant. May 19, 2009 similarly, the dome at keewatin is home to a revolutionary process, dubbed magnetation, that can extract valuable iron from the tailings just when the range is in need of new sources of ore. Pdf evaluation of iron ore tailings as replacement for. Mine tailings are the waste materials generated from the mining industry.
Against the dwindling status of mineral resources at present, effective recycling of tailings resources is an effective way to alleviate the shortage of resources, and to improve enterprise efficiency. The physicochemical and geotechnical characteristics of tailings generated in the processing of iron ore are affected by the changes or substitutions of iron ore treatment plants. The tailings are stored in tailings dams, which are lined with impermeable copper ore tailings processing expression of interest for copper ore tailings processing cqc. Pdf filtering of iron ore tailings for its disposal in.
Minnesota considers use of taconite to fix, construct roads. Pdf use of iron ore mine tailings in infrastructure projects. This paper investigated the use of iron ore tailings to replace natural sand as fine aggregate and studied the impact that various replacement levels had on the. Jun 21, 2012 tailings management drying out in the desert. Evaluation of additional iron recovery from iron ore tailings. Utilization of iron ore tailings as replacement to. Disposal of iron ore tailings along the shore of tolo harbour, hong kong has altered the adjacent environment. Innovative technique to generate saleable iron ore fines. The increasing number and size of tailings dams around. Conclusion hydrus technology has developed the technology to recover a higher proportion of the valuable components present in tailings by changing characteristics of the contained minerals using electrochemical means. We have all the laboratory and plant equipment you need to test or buildoperate your plant. Maximizing the recovery of fine iron ore using magnetic. Iron ore tailings dry stacking in pau branco mine, brazil. Conversely, the same tailings stream could be thickened to 6570% solids nonnewtonian suspension using a paste thickener.
Utilisation of iron ore tailings as aggregates in concrete taylor. Here the study focuses on the application of selective flocculation process for beneficiation of synthetic mixtures of iron ore and kaolinite as well as iron ore tailings. Minnesota considers use of taconite to fix, construct roadsapr. Utilization of iron ore tailings as fine aggregate in. If you would like to participate, you can choose to edit this article, or visit the project page for more information. The ore extraction, the subsequent mineral processing techniques and the tailings and. Copper ore tailings processing,mining ores crushing equipment. Magnetation could turn iron tailings into profits may. It is feasible in the case of copper and lead zinc ore to di spose off the generated tailings to. The influences of iron ore tailings as fine aggregate on the. Adigun suitability of iron ore tailings iot in building construction scsr journal of pure and applied sciences scsrjpas volume 1, issue 1, pp.
Iron ore is both mined and upgraded on minnesotas mesabi iron range. The chemical composition of the tailings is shown in table 1. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Innovative technique to generate saleable iron ore fines from. Specifically, magnetite and hematite are the main ironbearing ores in the lake. Utilization of iron ore tailings as raw material for portland. Share copy and redistribute the material in any medium or format. Maximizing the recovery of fine iron ore using magnetic separation most iron ore operations that require beneficiation of rom ore to produce lump, fine sinter, and pelletizing concentrate iron ore products will discard a slimes fraction to final tailings. In november 2009, porgera was officially certified under the international. I have also added information about iron ore mining in the united states, canada and brazil. Effects of application of iron ore tailing in soil on the. Beneficiation methods commonly associated with iron ores and the. Page 1 karara iron ore tsf design considerations for a. At karara, a vacuum belt filter will reduce the retained moisture of the iron ore tailings to around 15 per cent, giving the tailings.
Pdf utilisation of iron ore tailings in bricks as a replacement for sand will help in sustainable and greener development. The iron ores many a times contain so little metal that almost 32 per cent of the ore extracted ends up as tailings. Characteristics of the tailings, transportation from beneficiation plants and disposal system are described. Innovative iron ore tailings plant design innovative iron ore tailings plant design. The properties of tailings are dependent on the ore body being mined, the grinding and processing circuits, the reagent properties and the thickening process prior to disposal.
Dam failures are associated with errors in design, implementation, operation, and monitoring azam, 2014. C this article has been rated as cclass on the projects quality scale. Additionally, plans to increase ore production from the underground mine will result in an opportunity to store more tailings in the underground voids in the mine as backfill, thus diverting further tailings from the river. Chemical analysis of taconite ore tailings, in percentage of total weight. For example, a tailings stream in an iron ore application could be thickened to 4550% solids newtonian slurry in conventional or highrate thickeners.
The iron ore tailings consist of a moderate amount of various heavy metals, e. Guideline manual for iron and steel manufacturing pretreatment standards. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. I have added a section called mine tailings that is about the reclamation and production of iron from iron ore tailings.
Suitability of iron ore tailings and quarry dust as fine. Part of the structural engineering commons recommended citation kuranchie, f. This paper concludes what the comprehensive utilization of iron ore tailings is through analysis, and in order to develop and use the iron ore tailings, comprehensive utilization of iron ore tailings shall be the precondition of the iron ore tailing integrated utilization. It is feasible in the case of copper and lead zinc ore to di spose off the generated tailings to underground mines for backfilling6. This allows the exploitation of itabirite with low iron content. Sep 14, 2017 here the study focuses on the application of selective flocculation process for beneficiation of synthetic mixtures of iron ore and kaolinite as well as iron ore tailings. The increasing number and size of tailings dams around the globe magnifies the potential environmental, social and. Earlier iron ore tailings contain iron concentrations of around 45% or more. It has been proved that the comprehensive utilization of iron ore tailings is efficient, socially beneficial and improves environment situation. The silt and sandlike material is mixed with water and pumped to large basins or impoundments for permanent storage. The tailings were obtained from the local iron and steel industry and had an apparent density of 2. Improved water consumption at the sishen tsf complex iron ore. Mineralogical characterization of iron ore tailings from the.
Paste thickening optimises tailings disposal and water recovery at iron ore mine. Beneficiation of haematite from fluorspar tailings by reverse. Tailings is a combination of the finegrained typically siltsized, in the range from 0. This iron ore tailings is known for its exact chemical composition. This table of various minerals ore, rock types listed by their tested sg specific gravity complements the bwi list found in earlier post. Millions of tons of useful minerals are discarded every year into tailings, incurring op eration costs, raising production losses and environmental impact. Application of iron ore mud in powder form in posartland cement.
Due to the everexpanding population, the vast development of various industries, and the lack of sanitary control, the existing pollution problem of tolo harbour is serious. If you have any questions or comments please feel free to leave me a message. The cement industry has for some time been seeking alternative raw material for the portland cement clinker production. Studies on tailing slime have been carried out at iron ore mines in orissa and the results are discussed. Beneficiation of haematite from fluorspar tailings by. Reprocessing of sangan iron ore tailings by flotation. Mid this article has been rated as midimportance on the. Recovery of ultrafine iron ore from iron ore tailings. Creating steel from lowgrade iron ore requires a long process of mining, crushing, separating, concentrating.
Note these test work results are purely based on the sample submitted by bmm. Considering low content of weak magnetic iron mineral and its complex and costly recovery process, weak magnetic iron mineral did not be recovered, so strong magnetic iron. Dewatered stockpiling dry stacking is a safer alternative to tailings dams rico et al. Fortunately, a second tailings dyke contained the flow and no offsite impact was experienced. Similarly, the dome at keewatin is home to a revolutionary process, dubbed magnetation, that can extract valuable iron from the tailings just when the range is in need of new sources of ore. Easily share your publications and get them in front of issuus. The iron ore tailings was dried at room temperature 30. The fine tailings generated are usually disposed off in tailing ponds. Eight concrete mixes were produced with different levels of sand. Thats when coarse tailings, a waste product produced at iron range taconite plants, could become a valuable commodity as an aggregate replacement for road construction and fill. Tailings basin stability and environmental protections. In november 2009, porgera was officially certified under the international cyanide. The high density of this iron ore tailings is acclaimed by clients located all over the globe.
Characterisation of the fluorspar tailings was done and effects of various operating parameters on the recovery of haematite were studied. The magnetic iron ore is then laundered in two slurry surge tanks while the nonmagnetics silicasand go to the tailings disposal area. Geotechnical tests results presented here show the current feed plant conditions and the conditions after. These tailings are the residue of the milling process that is used to extract metals of interest from mined ores.
Beneficiation study on black mountain mines zinc tailings for. Final tailings dewatering the only waste product is now a filter cake with dry solids content of 80%, effectively eliminating the requirement for tailings dams dewatering concentrate the filter press can also be applied in the processing of a variety of ores for the dewatering of the concentrate in preparation for further processing. Chemical composition of the itakpe iron ore as obtained from the plant. Hore srk consulting, perth, western australia, australia d. Jul 30, 2015 the challenge today in the management of tailings, whether they be aluminum, zinc, gold or iron ore, is how to dispose of tailings material such that it is contained and stable, while maximising. Recovering fine iron minerals from itakpe iron ore process. Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore. A huge quantity of iron ore tailings was generated every year from the iron ore washing plants during beneficiation. The results show that iot have negligible poorer aggregate. The bmm delivered a total of three sample bags of bulk 100kgs quantity to sgl for test work. Dry centrifugal separation treatment of abaza tailings3 mm in size allowed 6. Results of fullscale pipe test loop pumping tests by c.
Backer1 2 3 abstract this report presents the results of tests conducted by the u. Pdf today many types of tailings are generated in the mining operations. The sishen iron ore mine is located approximately 50km southwest of kuruman in the northern. Environmental impacts of iron ore tailingsthe case of. During metallurgical process toxic chemicals are added to ore, which remains in tailings after the extraction process. Experiments were conducted to determine the suitability of iron ore tailings and quarry dust as fine aggregates replacement of river sand for concrete production, and thereby to utilize the enormous quantities of wastes from itakpe mines and the numerous granite quarries in nigeria to address concerns of environmental pollution. Minnesotas iron ore operations have a production capacity of about 40 million. Beneficiation study on black mountain mines zinc tailings. Characteristics of iron ore tailing slime in india and its. Minnesota considers use of taconite to fix, construct. Iron ore is part of wikiproject geology, an attempt at creating a standardized, informative, comprehensive and easytouse geology resource. Pdf the potential of iron ore tailings as secondary.
Tailings are ground rock particles that are produced during ore benefi ciati on and disposed in slurry form. This fraction can vary in particle size from 200 m down to 10 m. Sep 10, 2012 the tailings are stored in tailings dams, which are lined with impermeable copper ore tailings processing expression of interest for copper ore tailings processing cqc. Utilization of iron ore tailings as raw material for. Utilization of iron ore tailings as fine aggregate in ultra. Current situation and comprehensive utilization of iron ore tailing. Connotation of iron ore tailings comprehensive utilization. Iron ores are rocks and minerals from which metallic iron can be economically extracted. Water reclamation and tailings asarco mining operations in arizona water reclamation and tailings. Engaged by iron ore producer arrium in australia, we delivered metallurgical testing and process flowsheets, plant design and, with downer, construction for two complete beneficiation plants to transform variable, low grade tailings stockpiles into high grade iron ore product. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed the extraction of minerals from ore can be done two ways.
This paper is an overview of the tailings disposal options study for sangan iron mine project situated in northeastern iran. Luppnow srk consulting, perth, western australia, australia this paper was first presented at the tailings and mine waste 14 conference in keystone coloradoon 58 october 2014. The dam had been built on a foundation of older tailings that were placed as beach below water bbw material. Karara iron ore tsf design considerations for a unique large scale dry stack facility c. Iron ore tailings have the potential to be used as fine aggregate because they are relatively inert and the particle size of the tailings is significantly larger than that of cement. To enhance outstanding high performances, some influences on uhpc mortars were investigated such as different kinds of sands, different mix ratio of sands, and different largest particle size of fine aggregate. Tailings disposal options study for sangan iron mine. Pdf recovery of ultrafine iron ore from iron ore tailings. Characteristics of the iron ore tailing pond effluent in. Environmental impacts of iron ore tailingsthe case of tolo. The two main methods of recycling iron from iron ore tailings are magnetizing roasting and direct reduction. Hence, the iron ore minerals with lower magnetic susceptibility or interlocked with gangue minerals have no opportunity for upgradation, and proceed to the. This work aims to characterize iron ore tailings by eqm as the main tool. Ore smaller than 14 is pumped in slurry solution to the wet cobber magnetic separator, which begins the process of separating the iron from the non iron material.
The tailings contain toxic elements and find their way into the water environment. However, the 1971 epa report identified in the text documents the. This study was aimed to recover iron from tailings of yangla copper ore, fe content of which was 15. Natural sand and iron ore tailings were used as aggregates. Iron ore tailings come from concentration processes such as. The concentrated ore is palletized in a heat hardening operation with the aid of a suitable binding material such as bentonite. For any project feasibility it is always advisable to go for representative sampling of tailing dam dump. Management of tailings and wasterock in mining activities 4 apr 2010. Pdf evaluation of iron ore tailings as replacement for fine.
Therefore, india is an important iron ore producer and exporter. The first development phase of the project consists of two oerbodies, a primary crusher, crushed ore handling, stacking and a 2. Stabilizationsolidification of iron ore mine tailings by. The mining industry has seen several significant dam failures in recent years.
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