phosphorus in sponge iron

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THE EFFECT OF PHOSPHORUS ADDITIONS ON THE …

(1973). THE EFFECT OF PHOSPHORUS ADDITIONS ON THE TENSILE, FATIGUE, AND IMPACT STRENGTH OF SINTERED STEELS BASED ON SPONGE IRON POWDER AND HIGH-PURITY ATOMIZED IRON POWDER. Powder Metallurgy: Vol. 16, No. 32, pp. 374-386.

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Adsorptive removal of phosphorus from aqueous …

 · Substrates'' phosphorus adsorption isotherm at 25 ± 1 C, (a) sponge iron phosphorus adsorption isotherm and (b) zeolite phosphorus adsorption isotherm. The correlation coefficients ( R 2 > 0.99) given in Table 1 showed that the Langmuir equation gives a better fit for the adsorption isotherms of sponge iron and zeolite.

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Sponge Iron | Manufacturer of Sponge Iron

Sponge iron is formed through the reduction of iron ore to metallic iron through reaction with carbon in the form of coal, etc. at approx. 1100 degree Celsius. Sponge iron is also referred to as direct reduced iron, metalized iron, or hot briquetted iron.

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Enhanced phosphorus removal by microbial-collaborating …

The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus concentration of the ...

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Phosphorus Removal Mechanism of Sulfur/Sponge Iron …

The research result showed that the phosphorus removal ratio of sponge iron/sulfur composite fillers was over 95%, which was increased by 30% as compared to only sponge iron filler. In addition, the effluent TP concentration was reduced to less than 0.1 mg·L-1.

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IKEA Hong Kong

Shop 11, Ground floor, Hing Tung Shopping Centre, 55 Yiu Hing Road,,, Shau Kei Wan · 1.2 · 31250888

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Enhanced phosphorus removal by microbial-collaborating …

 · The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus concentration of …

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Bacteria in marine sponges harvest phosphorus for reef …

 · The bacteria that live in sponges may help transfer nutrients from the water to the sponge, and scientists have identified the mechanism for holding on to phosphorus for the first time.

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APPARATUS AND METHOD FOR REMOVING NITROGEN …

We claim: 1. An apparatus for removing nitrogen and phosphorus from sewage using sponge iron and activated sludge, comprising a raw tank (1) for accommodating sewage, a pH adjusting tank (2) connected to the raw tank (2) for adjusting the sewage to pH 6.5-7.5 and is provided at bottom with a first vent valve (21) for discharging sewage and sludge therein, a temperature adjustment device (15 ...

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Adsorptive removal of phosphorus from aqueous …

In this study, the phosphorus removal capacities of sponge iron and zeolite were evaluated and related to their physico-chemical characteristics. The potential mechanisms affecting the adsorptive removal of phosphorus from aqueous solutions onto sponge iron and zeolite were investigated in …

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Pig Iron Manufacturing Process

 · Brown and Lathe, with an ore containing 1 per cent, phosphorus, obtained products with 0.031 to 0.49 per cent, phosphorus, but did not reduce the phosphorus in the pig steel to below 0.20 per cent, without excessive loss of iron in the slag.

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Enhanced phosphorus removal by microbial-collaborating …

The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus concentration of the effluent of less than 0.5 mg/L could be achieved. The results also support that the biochemical reaction accelerated the iron ...

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Adsorptive removal of phosphorus from aqueous solution …

مرکزی صفحہ Journal of Colloid and Interface Science Adsorptive removal of phosphorus from aqueous solution using sponge iron and zeolite Journal of Colloid and Interface Science 2013 / 7 Vol. 402

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Effect of Phosphorus on Microstructure and Mechanical …

 · First, a master alloy powder containing 5 wt.% phosphorus was produced by reacting water-atomized iron (Fe) powder with orthophosphoric acid. The iron phosphate (master alloy) particles were then blended with the iron powder. The blended powders were placed in a mild steel can and hot forged at 1323 K in a flowing hydrogen atmosphere.

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Phosphorus (phosphate) and Chronic Kidney Disease

phosphorus restriction should be consistent with the rest of the CKD diet: reducing animal proteins (which are rich sources of phosphorus), reducing processed foods with added phosphorus (which are often high in salt and phosphate additives) and avoiding all cola.

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Adsorptive removal of phosphorus from aqueous solution …

 · The results of static experiments and dynamic experiments (column experiments) indicated that the adsorption of phosphorus onto sponge iron was more apt to chemical combination, but zeolite was more apt to electrostatic attraction or ion-exchange.

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Determination of phosphorus in the presence of iron(III) …

Abstract. Both manual and automated techniques have been developed for the determination of phosphorus in the presence of iron (III). Interference from iron (III) has been substantially eliminated by its reduction with hydroxyl-ammonium chloride prior to the formation of the molybdophosphate blue complex using ascorbic acid.

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Contribution to phosphorus behaviour in steelmaking with …

Experiments were conducted in a 70 t UHP electric arc furnace to study the phosphorus behaviour in steelmaking with sponge iron. The proportion of sponge iron in the metallic

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Effects of four different phosphorus-locking materials …

 · To lower phosphorus concentration in Xi''an moat, four different phosphorus-locking materials, namely, calcium nitrate, sponge-iron, fly ash, and silica alumina clay, were selected in this experiment to study their effects on water quality and sediment. Results of the continuous 68-day experiment showed that calcium nitrate was the most effective for controlling phosphorus …

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US10800686B2

 · An apparatus and a method for removing nitrogen and phosphorus from sewage by using sponge iron and activated sludge are disclosed herein. The apparatus comprises a raw tank, a pH adjusting tank, a primary SBR reactor, a secondary SBR reactor, an ...

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Phosphorus Capture and Recovery | MetaMateria

PO4 Sponge - Attractive for Both Removal and Recovery MetaMateria''s PO4 Sponge offers an effective way to remove soluble P from water. This is a unique, porous, high surface area material that contains iron-oxyhydroxide nano-crystals, providing an extremely large number of sites for phosphate ion sorption.

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phosphorus in sponge iron

of sponge iron containing 0.08% phosphorus were diluted with 25,600 lbs. of low-phosphorus steel scrap and gave a cast steel product containing 0.037%... Processes for phosphorus removal from iron ore

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Phosphorus

PO4 Sponge sorbs dissolved reactive phosphorus (DRP) or soluble P not part of biological or other compounds. The PO4 ions in water need to contact the nanomaterial in the porous product. This can be done by passing water through either a bed of product or through a monolith. A portion of the P is quickly sorbed, while additional sorption requires the PO4 ion to move from a higher to lower concentration area, which takes more time. Two approaches are used: (1) single pass and (2) recycle, where a portion of the water exiting product is goes back through the bed or monolith to allow a further reduction in the P remaining in the water. In some cases, a majority of P is removed by recycling and remaining water is passed through a polishing filter to lower P levels even further. PO4 Sponge …

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Determination of phosphorus in the presence of iron(III) …

Both manual and automated techniques have been developed for the determination of phosphorus in the presence of iron(III). Interference from iron(III) has been substantially eliminated by its reduction with hydroxyl-ammonium chloride prior to the formation of the

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Phosphorus recovery from waste activated sludge by …

 · Taking sponge iron as seed material, the effect of different reaction conditions on the recovery of phosphorus in waste activated sludge by vivianite crystallization was studied. Through single factor tests, the optimal conditions for vivianite formation were in …

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"DEPHOSPHORIZATION OF STEEL PRODUCED FROM SPONGE IRON …

scrap, sponge iron and cast iron. The percentage of directly reduced iron in the burden differs from 10 to 95 percent, depending on its inventory and monetary value of manufacturing. Large scale of steel formed through secondary route is alloy steel and plain

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SPONGE IRON – Lloyd''s Metals

Sponge iron is also known as Direct Reduced Iron (DRI). Direct reduction, is an alternative route of iron making has been developed to overcome some of these difficulties of conventional blast furnaces. DRI is successfully manufactured through either gas or coal-based technology. Iron ore is reduced in solid state at 800-1050 c either by ...

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Iron Sponge Process | Oil and Gas Separator

Iron Sponge Process. The iron sponge process uses the chemical reaction of ferric oxide with H2S to sweeten gas streams. This process is applied to gases with low H2S concentrations (300 ppm) operating at low to moderate pressures (50-500 psig). Carbon dioxide is not removed by this process.

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[Effects of Sulfur/sponge Iron Ratio for Deep Denitrification …

 · phosphorus removal effect of sulfur/sponge iron composite fillers was significantly higher than that of single filler, and sulfur/sponge iron ratio was one of the key factors influencing nitrogen and phosphorus removal by composite fillers. When the volume ratio was equal to or greater than 1:1, the removal

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Study of Phosphorus Removal by Using Sponge Iron …

Phosphorus is one of the key elements causing lake eutrophication. This paper deals with phosphate removal by Sponge iron in batch and fixed-bed operation. Isotherm and kinetic studies are conducted. The isotherm data is described by the Freundlich and Langmuir model, while the kinetic data of adsorption is fitted by the pseudo-second-order kinetic model. The saturated adsorption capacity of ...

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Effect of phosphorus as an alloying element on …

 · Increasing phosphorus from 0.45 to 2.58 wt% in gray cast iron, hardness increases from 215.43 to 249.38 HB. This is due to the hard phosphide eutectic. The microhardness of the phosphide eutectic is 486 HV and matrix microstructure is completely pearlitic because of the high amount of manganese (about 0.6%).

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CN102393368B

A method for measuring phosphorus content in sponge iron belongs to the technical field of analytical chemistry, has the advantages of low detection limit, high accuracy and precision and low cost,...

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Study of Phosphorus Removal by Using Sponge Iron …

 · Phosphorus is one of the key elements causing lake eutrophication. This paper deals with phosphate removal by Sponge iron in batch and fixed-bed operation. Isotherm and …

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