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High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore ...
Effective phosphorus removal procedures from high-phosphorus iron ores are very likely to be ore-specific due to the significant variations in ore compositions, and to the presentation of phosphorus in the various high-phosphorus iron ores. Irrespective of ore composition, a general processing chart for phosphorus removal will have some common steps, including:
17/12/2015 The possibility of phosphorus removal from high phosphorus iron ore using combined microwave pretreatment and ultrasonic treatment was studied. The results indicated that microwave pretreatment significantly increases the efficiency of ultrasonic disintegration and the removal of gangues. The improvement in Fe grade and the decrease in impurities after ultrasonic treatment is
Xu et al. investigated the phosphorus removal of oolitic hematite ore of high content of iron by applying a reductive calcination with dephosphorizing agent (Na 2 SO 4 and Na 2 CO 3). The calcined mass was subjected to two stages of magnetic separation and grinding. The phosphorus content dropped from 0.82% to 0.06% and iron from 43.65% to 60.23% with 87% mass recovery. Analysis showed that 20 ...
01/12/2006 The removal of phosphorus from iron ore by leaching with nitric acid[J]. Hydrometallurgy, 1989(21): 255–275. [8] Mamoun M, ZHANG Yu. A hydrometallurgical process for the dephosphorization of iron ore[J]. Hydrometallurgy, 1989(21): 277–292. [9] Forssberg R, Asolfsson G. Dephosphorisation of high-phosphorus iron ores by means of acid leaching[J]. Erzmetal, 1981, 34: 316–322. Google
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 ...
M.J. Fisher-White, in Iron Ore, 2015. 12.2.2 Phosphorus removal from oolitic hematite ores. Oolitic ironstones are composed of spherical or oval concentric layers of iron oxide, silica, and other minerals. The Ningxiang ore from the Hunan and Hubei provinces in China is used as the example of oolitic ironstone in which the phosphorus is associated with hematite. The removal of phosphorus from ...
Chemical treatment uses a metal salt, most commonly iron, to precipitate ortho-phosphate. The precipitate forms as a solid and is removed in a solid’s removal process, either a settlement tank or a tertiary solids capture process such as a disc or sand filter. In order to ensure that the new consents are met the industry has been carrying out its own research under the Chemical Investigation ...
01/12/2006 The removal of phosphorus from iron ore by leaching with nitric acid[J]. Hydrometallurgy, 1989(21): 255–275. [8] Mamoun M, ZHANG Yu. A hydrometallurgical process for the dephosphorization of iron ore[J]. Hydrometallurgy, 1989(21): 277–292. [9] Forssberg R, Asolfsson G. Dephosphorisation of high-phosphorus iron ores by means of acid leaching[J]. Erzmetal, 1981, 34: 316–322. Google
Processes For Phosphorus Removal From Iron Ore A. Phosphorus can be removed from iron ore by very different routes of treatment.The genesis of the reserve, the mineralogy, the cost and sustainability define the technol ogy to be applied.The articles surveyed cite removal by physical processes flotation and selective agglomeration, chemical leaching, thermal and bioleaching processes.
Phosphorus Removal from Goethitic Iron Ore with a Low Temperature Heat Treatment and a Caustic Leach Michael John FISHER-WHITE, Roy Randall LOVEL and Graham Jeffrey SPARROW CSIRO Process Science and Engineering, Box 312, Clayton South, Victoria, 3169 Australia. (Received on November 2, 2011; accepted on November 25, 2011) The phosphorus in high-phosphorus (>0.1% P) iron
Phosphorus Removal from Goethitic Iron Ore with a Low . Temperature Heat Treatment and a Caustic Leach. Michael John FISHER-WHITE, Roy Randall LOVEL and Graham Jeffrey SPARROW. CSIRO Process ...
Effective phosphorus removal procedures from high-phosphorus iron ores are very likely to be ore-specific due to the significant variations in ore compositions, and to the presentation of phosphorus in the various high-phosphorus iron ores. Irrespective of ore composition, a general processing chart for phosphorus removal will have some common steps, including:
Phosphorus Removal of High Phosphorous Oolitic Iron Ore with Acid-Leaching Fluidized-Reduction and Melt-Separation Process Lei GUO, Jintao GAO, Yiwei ZHONG, Han GAO and Zhancheng GUO* State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083 China. (Received on March 11, 2015; accepted on May 15, 2015; J-STAGE Advance
[en] iron ore ; dephosphorisation ; roasting: Abstract : [en] The present study is devoted to improvement of the leaching efficiency during phosphorous removal from high phosphorous gravity-magnetic concentrate. Before leaching the concentrate has been subjected to roasting with the addition of either Ca(OH)2 or CaO.
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 ...
ROASTING OF OOLITIC IRON ORE WITH ALKALINE EARTH ADDITIVES . K Ionkov. 1, S Gaydardzhiev. 2, D Bastin. 3, A Correa de Araujo. 4. and M Lacoste. 5. ABSTRACT . The present study is devoted to improvement of the leaching efficiency during phosphorous removal from high phosphorous gravity-magnetic concentrate. Before leaching the concentrate has been subjected to
Mechanism of phosphorus removal in beneficiation of high . 01/11/2012 High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore effectively Better beneficiation index were gotten by direct reduction roasting with dephosphorization agent followed by two stages ...
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 ...
Fundamental experiments were conducted with the aim of crude separation of the phosphorus contained in high-P iron ore prior to the ironmaking process. By reducing high-P iron ore with lime and graphite at an appropriate blending ratio and temperature, a reduction product was obtained consisting of a P-concentrated phase, metallic Fe with low P, and an Fe oxide-containing phase. The reduction ...
Improvement of Phosphorus Removal from Iron Ore Using Combined Microwave Pretreatment and Ultrasonic Treatment Mamdouh Omrana,b*, Timo Fabritiusa, Ahmed M. Elmahdyb, Nagui A. Abdel-Khalekb, Stanislav Gornostayeva a Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Finland. b Mineral Processing and Agglomeration Lab, Central Metallurgical
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 ...
The phosphorus removal from high-phosphorus iron ores by sodium roasting was studied. The effects of ratio of NaOH to NaCO3, roasting temperature and reaction time on the dephosphorization ratio were investigated. The results showed that the dephosphorization ratio can reach 80.1% under the conditions of ratio of NaOH to NaCO3 5:6, roasting temperature 1100°C, and reaction time 120min.
Hydrometallurgy baseddephosphorization of iron ore as observed from experiment and model prediction [13] has shown that phosphorus - removal during leachingusing oxalic acid solution, is highly dependent on the final pH of the leaching solution (which varies time and other factor such ), mass-input of the iron oxide ore and ore mineralogy etc.
REMOVAL OF SULFUR AND PHOSPHOROUS FROM IRON ORE CONCENTRATE BY LEACHING Hassan REZVANI POUR*, Ali MOSTAFAVI *, Tayebeh SHAMS PUR , Ghobad EBADI POUR**, Amir HAJI ZADEH OMRAN ** * Department of Chemistry, Shahid Bahonar University of Kerman, Pajoohesh Sq., Kerman 76169-14111, Iran, [email protected] ** Gole-gohar Iron Ore Complex,. Km. 50 ...
Chemical treatment uses a metal salt, most commonly iron, to precipitate ortho-phosphate. The precipitate forms as a solid and is removed in a solid’s removal process, either a settlement tank or a tertiary solids capture process such as a disc or sand filter. In order to ensure that the new consents are met the industry has been carrying out its own research under the Chemical Investigation ...
Finally, enhanced biological phosphorus removal can be deployed, in which specific bacteria are selectively enriched and accumulate large quantities of phosphorus within their cells (up to 20% of the mass). When the biomass enriched in these bacteria is separated from the treated water, these biosolids have a high fertiliser value. A well-buffered system maintains the pH where biological ...
phosphorus removal from iron ore. Popular Searches. Fertilizer produced from abattoir waste can contribute to Know More. nbsp 0183 32 Phosphorus P is essential for life and is a key limiter of crop yields unless regular applications of fertilizer are used Currently much of the P fertilizer used worldwide is derived from rock phosphate ore but this is both finite and geographically concentrated ...
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