phosphorus problem in iron ore

  • (PDF) Processes for phosphorus removal from iron ore A

    The phosphorus in high-phosphorus (>0.1% P) iron ores from the Pilbara area of Western Australia is mainly associated with the goethite fraction of the ore. Physical separation methods and simple...

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  • Processes for phosphorus removal from iron ore a review

    The process of removing phosphorus from iron ore linked to the concept of selective agglomeration is well grounded in the work of Sirianni et al.. Sparks and Sirianni (1974) applied the technique to remove the iron ore’s phosphorus from Snake River, northern Canada. The content of phosphorus was in the range of 0.34% unacceptable for steel production. The iron content was from 44% to 53%, making it

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  • (PDF) The removal of phosphorus from iron ore by leaching

    The main problem is that HC1 has a high reactivity with Fe304, and it will result in greater losses of both iron and acid [ 2,6 ].The use of sulfuric acid, although it is the most economic acid, will result in the precipitation of calcium sulphate in the ore. This will require the further separation of the sulphate from the leached ore, as the increased sulphur content will adversely affect

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  • Problems of Iron and Phosphorus Geochemistry in the

    01/07/2001· It is shown that the major economic resources of iron ore are hosted in Precambrian rocks, whereas the phosphorites are related to Upper Phanerozoic. High-temperature hydrothermal solutions served as an important source of iron for jaspilite ores. The low P2O5content therein indicates that the phosphorus deposition was only weakly related to the hydrothermal activity. Thus, the hydrothermal origin of phosphorite

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  • Exploring the possibilities of biological beneficiation of

    In past decades, preferences of international iron-ore trade markets have moved to low- phosphorus iron ores because of the well-known detrimental effects of phosphorus on steel and other iron

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  • Characterisation of phosphorus and other impurities in

    01/11/2019· The phosphorus content of Australian iron ores is a particularly serious problem. There are extensive (~7 billion tonnes) amounts of high phosphorus-containing ore in Western Australia deposits that are close to existing infrastructure. These deposits have acceptable iron grade, but the phosphorus levels (>0.1 wt-% P) incur a price penalty because of the adverse effects of phosphorus

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  • Phosphorus in different types of ore, sulfides in the iron

    The Leveniemi iron ore occurs mainly in sedimentary rocks. In the coexisting iron-copper ore deposits at Tjaarrojaakka, high phosphorus contents are often found.In northern Sweden, there is also apatite enrichment in the ores and wall rocks which lie below the Kiruna-type ores. These ores are regarded as sedimentary. The present author believes that a prerequisite condition for apatite banding

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  • Processes for phosphorus removal from iron ore a review

    The process of removing phosphorus from iron ore linked to the concept of selective agglomeration is well grounded in the work of Sirianni et al.. Sparks and Sirianni (1974) applied the technique to remove the iron ore’s phosphorus from Snake River, northern Canada. The content of phosphorus was in the range of 0.34% unacceptable for steel production. The iron content was from 44% to 53%

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  • Determination of Phosphorus in Iron Ore Analytical

    01/05/2002· The determination of phosphate in rocks and iron ores using inductively coupled plasma with optical emission spectroscopy (ICP-OES). Geochemistry: Exploration, Environment, Analysis 2019,

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  • (PDF) Mobilization of phosphorus from iron ore by the

    The phosphate con- Fig. 2, low-grade, phosphate-rich ( 0.3 wt%P as revealed by EDX tent of the ore in un-inoculated flasks did not change during the analysis) iron ore particles were preferentially colonized by cells course of the experiment. of B. caribensis FeGL03. Biofilm formation was clearly seen on the particles, in contrast to low-phosphate particles like quartz or 4.2. Phosphate

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  • Iron ore Wikipedia

    Usable iron ore production in million metric tons for 2015 The High phosphorus iron can also be hardened by cold hammering. The hardening effect is true for any concentration of phosphorus. The more phosphorus, the harder the iron becomes and the more it can be hardened by hammering. Modern steel makers can increase hardness by as much as 30%, without sacrificing shock resistance

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  • The removal of phosphate from wastewater using anoxic

    01/10/2009· The highest phosphorus removal rate from reject water using bioreduction of iron ore was 25 mg P/L day and phosphorus removal efficiency was 97% in the rotating reactor with the iron ore particles 7.6 mm. The rates of iron ore bioreduction and phosphate precipitation in the rotating reactor were associated with the production of fine iron ore particles from initially loaded coarse iron ore

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  • Characterization studies on Agbaja iron ore: a high

    Agbaja iron ore, a high-phosphorus iron ore, has been characterized using a variety of analysis techniques in an attempt to unravel the presentation and distribution of phosphorus in the iron ore (between the iron-rich phase and the gangue mineral(s) which will be very useful in planning effective beneficiation and phosphorus removal strategies). From the results of this study, the presence of

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  • Channel-iron deposits Wikipedia

    The water content of channel iron deposits (quoted as Loss on Ignition) is from 7% to 12%, which is the highest of all iron ore types, generally due to the presence of goethite-limonite. Phosphorus, aluminium and sulfur levels are another concern, typically being above normal levels in-situ although if the phosphorus and aluminium are hosted in a weak cement, they can often be washed out

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