substance chemical to reduce phosphorus in iron ore


Removing phosphorus from iron - National Research ...

To remove phosphorus from iron to a desired level, a charge of the iron is melted in a vessel followed by either (i) supplying gas such as 40% CO 2 +9% CO+51% H 2 to the charge before melting is complete, or (ii) adding, to the charge, iron which is partly or wholly oxidized equivalent to adding iron ore of up to 8% of the charge weight, or a combination of (i) and (ii), such as would at 1600 ...

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Water companies: control of chemicals used for dosing at ...

08-05-2018· Iron and aluminium salts are typically used to reduce phosphorus concentration in the discharge. Iron is classed as a 'specific pollutant' for surface water and a non-hazardous pollutant for ...

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Industry Test on Phosphorus Removal and Direct Reduction ...

Industry test on phosphorus removal and direct reduction of the "Ningxiang type" high-phosphorus oolitic hematite ore has been carried out in a tunnel kiln on the basis of laboratory experiment.

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Extracting iron - Iron and aluminium - GCSE Chemistry ...

Iron ore (haematite) Iron(III) oxide: A compound that contains iron : Coke: Carbon: Burns in air to produce heat, and reacts to form carbon monoxide (needed to reduce the iron oxide) Limestone ...

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The Effect of Na2O and K2O on the Partition Ratio of ...

16-05-2013· In order to reduce the production cost, steel companies are seeking domestic iron ore resources. There are some high phosphorus oolitic hematite resources in China. The known economic reserves in places of the high phosphorus oolitic hematite are 37.2 hundred million tons, which is about 11% in mass percent of those iron ore deposit in China.

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Chemical reactions of iron with simple and complex ...

Chemical reactions of iron with simple and complex substances, ... Chemical reactions of iron with simple and complex substances, and its role in human activity ... (up to 70%). This el­e­ment is known as "red iron ore", and is dark red with a brown tinge to gray­ish-red. Limonite is a min­er­al with an iron con­tent of 85%.

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Water companies: control of chemicals used for dosing at ...

Phosphorus is one of the most deleterious elements in iron ore as it follows iron during downstream reduction processes, forming iron phosphides that make steel brittle. Excess phosphorus increases the cost of steelmaking and the steel industry has placed an upper limit of 0.07–0.08 wt-% P on the iron ore …

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Phosphorus Treatment and Removal Technologies

For lower phosphorus concentrations in the range of 0.3 – 1.0 mg/L, the dose can be in the range of 1.2 to 4.0 moles aluminum or iron per mole of phosphorus. The pH value is an important factor for efficient removal of phosphorus using alum or other salts, as the solubility of their precipitates vary with pH. Phosphorus removal is most ...

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Removal of phosphorus from iron ores by chemical leaching ...

01-12-2006· Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. Sodium hydroxide, sulfuriced, hydrochloric and nitric acids were used for the preparation of leach solutions. The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron ...

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Direct Reduced Iron and its Production Processes – IspatGuru

16-03-2013· Iron ore is used mostly in pellet and/or lumpy form. Oxygen (O2) is removed from the iron ore by chemical reactions based on H2 and CO for the production of highly metalized DRI. In the direct reduction process, the solid metallic iron (Fe) is obtained directly from solid iron ore without subjecting the ore or the metal to fusion.

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Ironmaking 101 – From Ore to Iron with Blast Furnaces ...

10-10-2017· Iron ores with lower iron content such as taconite are first processed to concentrate the iron level and drive off volatile impurities. The iron ore is dressed or crushed into 0.5-1 in. chunks, which increases surface area for reactions. Magnetic separation is used to remove some of the undesirable minerals or gangue in the crushed ore.

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Part 2 Physical Chemical Phosphorous removal

Monthly Average Total Phosphorus (mg/l) Influent Total Phosphorus Effluent Total Phosphorus Avg Inf TP = 0.35 mg/l Avg Eff TP = 0.09 mg/l Activated Sludge with Bio-P Single Point Alum = 40-50 mg/l Polymer dose = 0.2- 0.3 mg/l UV Disinfection South Lyon, MI 0.00 0.10 0.20 0.30 0.40 Jan-07 Mar-07 May-07 Aug-07 Oct-07 Jan-08 Mar-08 Jun-08 Aug-08 ...

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Characterisation of phosphorus and other impurities in ...

Phosphorus is one of the most deleterious elements in iron ore as it follows iron during downstream reduction processes, forming iron phosphides that make steel brittle. Excess phosphorus increases the cost of steelmaking and the steel industry has placed an upper limit of 0.07–0.08 wt-% P on the iron ore …

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Chemistry - Steel making, Redox, and Organic Chemistry ...

Start studying Chemistry - Steel making, Redox, and Organic Chemistry. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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SHMP Chemical (Sodium Hexametaphosphate 68%) - Chemate

Purchase shmp chemical the 68% conetent of phosphorus pentoxide in Chemate. ... It can prevent the iron and manganese dissolved in the water from redening and blackening due to oxidation. ... but also recover hydrochloric acid produced by by-product. This method can also be used to decompose phosphate ore for other uses.

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List of Phosphate binders - Drugs.com

Phosphate binders are used to decrease the absorption of phosphate from food in the digestive tract. They are used when there is an abnormally high blood phosphate level (hyperphosphatemia) which can be caused by impaired renal phosphate excretion or increased extracellular fluid phosphate loads.Phosphate binders react with phosphate to form an insoluble compound, making it unable to …

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Steelmaking - Wikipedia

Steelmaking is the process of producing steel from iron ore and/or scrap.In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (the most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel.

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Hematite | Fe2O3 - PubChem

Iron ore is a mineral substance which, when heated in the presence of a reductant, will yield metallic iron (Fe). It almost always consists of iron oxides, the primary forms of which are magnetite (Fe3O4) and hematite (Fe2O3). Iron ore is the source of primary iron for the world's iron and steel industries.

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Specifications guide Iron ore - S&P Global

Iron Ore Phosphorus Differential per 0.01% with 0.11-0.12% (60-63.5% Fe Fines) IOPPU00 Assessment Daily PMA1105 0.01% phosphorus within 0.11-0.12% range for fines with 60-63.5% Fe $/dmt. Specifications guide Iron ore: April 2020 in the Platts Assessments Methodology, the iron ...

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Phosphorous removal from wastewater - Lenntech

Moreover the costs for the plant are lower, since there is no need for big postprecipitation ponds. In this process the chemical added are only iron and aluminium, lime is added only for pH correction. Lower costs and more simplicity are contrasted by a phosphorous removal efficiency lower than with postprecipitation (below 85%).

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