In order to make good use of huge amount of high phosphorous iron ore for the ironmaking industry, the characteristics and advances in the dephosphorization technologies of high phosphorus iron ore were introduced, such as mill run, chemical leaching, bio-leaching and high-temperature dephosphorization.High P manganese ore has complex composition containing several gangue compounds such as SiO 2, Al 2 O 3, MgO, Na 2 O, etc. 10) Because the gangue components of relatively small amount might interact with phosphorus in ores during the formation of manganese iron carbide, the reactions among the major compounds should be studied prior to that of.
Smelting Potential of HIsmelt Technology for High-Phosphorus Iron The iron recovery rate for high-phosphorus iron ore reached 92 with relatively high phosphorus External dephosphorization of hot metal by its remanent.
A~traet. The position in India on the phosphorus front vis-a-vis iron and steel operations elsewhere in the world is, and will remain, most unfavourable since Indian iron ores contain high phosphorus and coal (and therefore, also the coke), has high ash and phosphorus in the Indian subcontinent.
For dephosphorization of molten pig iron with such dephosphorizing slag, it is necessary, as mentioned above, to provide sufficient oxygen to oxidize all the amounts of silicon and manganese with stronger affinity for oxygen than phosphorus so as to oxidize the silicon, manganese and phosphorus, and less than about 1.5 wt. of the carbon.
Feb 01, 2000 Because conventional (physical) methods of ore dressing are not suitable for reducing the phosphorus contents of high-phosphorous manganese ores from Andhra Pradesh (AP) and the adjoining area in southern Orissa, India, the adoption of chemical methods becomes imperative. An attempt was therefore made to reduce the phosphorus content of partially beneficiated manganese ores.
Leaching of three high-phosphorus manganese ore samples from central India with dilute hydrochloric acid (0.1–0.6 M) has been found to reduce their phosphorus contents below the specified limit.
Grain size of ore finer than 100 mesh (B.S.) in general gives satisfactory dephosphorization. Laboratory-scale results have been, in general, supported by bench-scale work which shows that phosphorus can be effectively removed from high-phosphorus manganese ores of central India by leaching in dilute hydrochloric acid at ambient temperature.
Dec 31, 2020 High-phosphorus manganese ores provide an important source of manganese, which is regarded as an irreplaceable material in the steel industry. The ammonia-ammonium carbonate leaching method was proposed for the removal of phosphorus and extracting manganese from high-phosphorus manganese ore, both effectively and environmentally.
Removal of phosphorus from high phosphorus iron ores by selective HCl Leaching method. Journal of Iron and Steel Research, International, v. 18, p. 01-04, 2011.). The most frequent and important constituent of the class of phosphates is apatite. Besides apatite, various other phosphates may be found in deposits of iron ore (Table 1).
2.1 Phosphate occurrences. Iron ore of high phosphorus content coexists with other minerals in the form of apatite or fluorapatite. Phosphorus is spread on the edge of mineral particles of iron oxide and embedded in quartz or carbonate minerals and a small amount is present in the iron mineral grid (Xia et al., 2011).The most frequent and important constituent of the class of phosphates is.
IntroductionThe behavior of phosphorus in the solid state carbothermic reduction process and the dephosphorization treatment of high phosphorus iron ore by pre-reduction, mechanical crushing and screening methods were discussed in the previous work. 1,2) The reduced iron ore phases were characterized according to their behavior under uni-axial mechanical loading.
Mechanism of phosphorus removal in beneficiation of high augment the reactions in relation to phosphorus. In the tests, the mixed samples of raw ore (fineness 100 less than 2 mm) and pure apatite (fineness 100 less than 0.018 mm) with the mass ratio of 9 1(hereinafter referred to the mixed samples) was mixed with coal and dephosphorization agent, and then loaded into the muffle furnace.