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Phosphorus is a major contaminant in steelmaking and current specifications for iron ore the feedstock used in steelmaking requires ores averaging less than % P bulk In Australia the majority of iron ore feedstock production is a blend of low P <% P hematite rich ores and more common high P >% P goethite rich ores
·A novel direct reduction flash smelting separation process of treating high phosphorous iron ore fines Author links open overlay panel Qipeng Bao Lei Guo Zhancheng Guo Show more The removal of phosphorus from iron ore by leaching with nitric acid Hydrometallurgy 1989 Solid State Phenom 2018 View more references Cited by 27
·Solid State Phenom 279 2018 pp 222 229 Crossref View in Scopus Google Scholar The removal of phosphorus from iron ore by leaching with nitric acid Hydrometallurgy 21 1989 Removal of phosphorus rich phase from high phosphorous iron ore by melt separation at 1573 K in a super gravity field Int J Miner Metall
·In the process of resource utilization of high phosphorus iron ores phosphorus should be removed first Compared to other dephosphorization methods selective leaching with acid has special advantages such as high dephosphorization ratio low iron loss and so on However a large amount of acidic wastewater containing phosphorus was produced after acid
·In secondary route of steelmaking production through induction melting furnace contributes about 31 % of India s total steel production The main raw materials used are steel scrap cast iron and sponge iron In India majority of the induction furnaces are operated using acidic lining of silica based ramming mass to produce structural steel where basicity cannot be
·According to the melting behavior of high phosphorous iron ore gaseous reduction product at 1473 K the iron grains remain in solid state and the other minerals have formed into slag phase as
·An innovative process of coal based reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical high phosphorus refractory iron ore The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during the coal based reduction and the
·Australia s iron ore industry is undergoing a major transformation Reserves of traditional high grade ores are becoming depleted while the replacement ore types are lower in grade and sometimes require beneficiation to remove or minimise contaminants such as alumina silica and phosphorus Dukino et al 2000
·The iron ore grade has shown a gradual decline in recent years highquality lump iron ore resources are decreasing year by year and the proportion of ore fines in ore production is expanding [1
This paper reports the phosphorus removal of high phosphorus oolitic iron ore by acid leaching and its influence factors The experimental ore is Exi high phosphorus oolitic iron ore with % phosphorus % iron and % sulphur After acid leaching the P content decreases to about % the iron loss during acid leaching is about % and the S content is % which
·In situ observation on the morphology evolution and phosphorous migration of gaseous reduced high phosphorous oolitic iron ore during the melting process was carried out with a high temperature confocal scanning laser microscope The results showed that 1473 K 1200 °C was a critical temperature at which the gangue minerals started to form into the slag
A new approach of removing the phosphorus rich phase from high phosphorous iron ore by melt separation at 1573 K in a super gravity field was investigated
·With the rapid consumption of iron ore around the world the iron ore deposits have been exhibited an increasingly complex mineralogical composition It is predicted that the identified premium grade iron ore with low phosphorus content under wt% will be depleted within 30 years at the current rate of 2 Especially in China as the biggest iron ore
·THE iron ore deposits exhibit an increasing complex mineralogical composition as the gradual decrease of high grade iron ore resources around the world so utilization of the refractory iron ore has been urgently needed Simultaneously there are multitudes of high phosphorous iron ore resources in China with a
·With an optimum ore size of 58 106 µm the bioleaching solid residues contained on average % Fe and % P corresponding removal of wt% iron and wt% phosphorous
·According to the melting behavior of high phosphorous iron ore gaseous reduction product at 1473 K the iron grains remain in solid state and the other minerals have formed into slag phase as
·In this paper the effect of reaction time high phosphorus iron ore particle size dephosphorization agent concentration stirring strength G liquid solid ratio amount of leaching solution with differ ent concentration/amount of iron ore different liq uid solid ratios represent different addition of acid and reaction temperature on
·The current study was focused on the removal of sulfur from iron ore concentrate using chemical leaching technique Magnetite iron ore concentrate was chosen for this purpose The results obtained from the study showed that more than 90% of the total sulfur content was removed from the iron ore concentrate by the chemical leaching Effects of
·Abstract The possibility of selective solid phase reduction of iron from oolitic ore has been experimentally confirmed Solid phase reduction was carried out at temperatures of 850 and 1000°C in a CO atmosphere and in a mixture with solid carbon Distribution of iron and phosphorus was investigated with a scanning electron microscope It was found that at a
·Phosphorus is one of the main nutrients required for all life Phosphorus as phosphate form plays an important role in different cellular processes
·Consequently phosphorous recovery is typically performed from liquid/solid side streams of the WWTP Fig 4 a and it is expected to improve when EBPR or chemical P removal are implemented in the WWTP mainstream line The presence of a hydrolysis/AD step in the sludge streamline can also help to enhance the subsequent P recovery by promoting
And the special oolitic structure of the high phosphorous iron ore contributes to the great contact area between the gangue phase and iron phase so on a micro level the activity values of P 2 O 5 or Ca 3 PO 4 2 phases can be considered close to that in standard state
·To investigate the influence of the solid fuel existence state in iron ore sintering on the combustion behavior and CO and NO emission characteristics four kinds of quasi particles with different
