The obtained iron ore materials are moved to flotation desulfurization process then to weak magnetic separation The obtained product is iron ore concentrate And low iron content material is discharged as tailings You will also obtain sulphide concentrate as by product through flotation desulfurization
Majority of the iron ore deposits Fig are confined to Banded iron formation BIF of Proterozoic volcano sedimentary sequence supracrustal of age and Thus Complex genetic process has a control over the mineralogical and geochemical attribute of the iron ore associated rocks and their host rocks The
Ore Deposits Formed by Oxidation and Supergene Enrichment · When ore deposits are exposed to the oxidation zone they are weathered and altered with the country rocks · The surface waters oxidize many ore minerals and yield solvents that dissolve other minerals · An orebody thus becomes oxidized and generally leached of many of its valuable materials down to the groundwater table or to
In ore deposit geology supergene processes or enrichment are those that occur relatively near the surface as opposed to deep hypogene processes Supergene processes include the predominance of meteoric water circulation with concomitant oxidation and chemical descending meteoric waters oxidize the primary sulfide ore minerals and redistribute the metallic ore elements
2 Iron Ore Deposits Iron ore deposits are known to occur in sedimentary hydrothermal and magmatic environments but production today is almost entirely from three types of deposit deposits related to Precambrian banded iron formations provide about 90% of all iron ore mined and the remainder is derived from metasomatic skarn and magmatic
Earth s most important iron ore deposits are found in sedimentary rocks They formed from chemical reactions that combined iron and oxygen in marine and fresh waters The two most important minerals in these deposits are iron oxides hematite Fe 2 O 3 and magnetite Fe 3 O 4 These iron ores have been mined to produce almost every iron
Mar 14 2014· The iron itself is usually found in the form of magnetite Fe3O4 hematite Fe2O3 goethite FeO OH limonite FeO OH n H2O or siderite FeCO3 The process of mining consists of discovery of an iron ore deposit through extraction of iron ore and finally to returning the land to its natural state It consists of several distinct steps
Feb 02 2016· Ore deposits may be considered as Ore deposit is an occurrence of minerals or metals in sufficiently high concentration to be profitable to mine and process using current technology and under current economic conditions Commercial mineral deposits Ore suitable for mining in the present times or non commercial ore deposits
This process varies depending on the ore source but typically involves various stages of crushing and grinding to reduce the size of the iron ore Separation techniques such as magnetic separation or froth flotation are then used to separate the gangue unwanted materials from the iron content
Jun 29 2021· Control of the combined deposits which could produce up to 100 million tonnes of iron ore annually has been handed to a Congolese entity controlled by
Sep 18 2020· Bog iron is much easier to smelt because it contains fewer impurities than iron ore in rock deposits but the quantity of iron available from bog iron is relatively low although actually renewable unlike mines a bog can be harvested for iron again after a few decades as the processes which produce the bog iron continue
Apr 27 2017· Iron Ore Beneficiation Process During the last ten years great strides have been made on the Mesabi range in the practice of beneficiating low grade iron ore material By beneficiation is meant all methods of removing impurities and raising the iron content to a point where it can be sold in open market the principal impurities being
Hydrothermal Deposits Hot aqueous solutions are responsible for the formation of many ore deposits Fluid inclusion research indicates most ore forming fluids range in temperature from 50°C to 650°C Analysis of the fluid in inclusions has shown that water is the most important phase and salinities are often much greater than those of seawater
Sep 18 2020· Bog iron is much easier to smelt because it contains fewer impurities than iron ore in rock deposits but the quantity of iron available from bog iron is relatively low although actually renewable unlike mines a bog can be harvested for iron again after a few decades as the processes which produce the bog iron continue
Oct 23 2017· The Step by Step Process of Producing Iron from Iron Ore Some 3000 4000 years ago the ancient Egyptians derived iron from the fallen meteorites or so they say carved them and made tools and equipment besides jewelry We have come a long way since then Now first of all pure iron is rarely available except if one or two meteorites crash
Mar 14 2018· When the iron ore is extracted from the mine it must undergo several processing stages Six steps to process iron ore 1 Screening We recommend that you begin by screening the iron ore to separate fine particles below the crusher s CSS before the crushing stage A static screen is used to divert the fine particles for crushing
Jul 11 2018· The iron ore production has significantly expanded in recent years owing to increasing steel demands in developing countries However the content of iron in ore deposits has deteriorated and low grade iron ore has been processed The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking This chapter shows the status of the pelletizing process
Iron ore is the key raw material for steel production enterprises Generally iron ore with a grade of less than 50% needs to be processed before smelting and utilization After crushing grinding magnetic separation flotation and gravity separation etc iron is gradually selected from the natural iron ore
Mining of iron ore is a highly capital and energy intensive process Life cycle assessment LCA of the mining and mineral processing of iron ore in Australia was carried out in this chapter
Apr 09 2015· Igneous ores These iron ore deposits are formed by crystallization from liquid rock materials either as layered type deposits that possibly are the result of crystals of heavy iron bearing minerals settling as they crystallize to form iron rich concentrations or as deposits which show intrusive relationship with their wall rocks
