Dephosphorization Treatment High Phosphorus Iron Ore

Dephosphorization treatment of high phosphorus iron ore by prereduction, air jet milling and screening methods

May 01, 2011nbsp018332in 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 concentrationamount of iron ore, different liq uidsolid ratios represent different addition of acid and reaction temperature on ...

Dephosphorization treatment of high phosphorus iron ore the behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in the present work.

Dephosphorization process of high phosphorus oolitic iron ore by acid leaching and leaching kinetics were investigated in the paper. the high phosphorus ore samples 51t.fe, 0.52p used in this work were analysed by semeds and xrd, which showed their oolitic structure and mineral phases.

High level of phosphorous in steel production will cause the steel produced to be brittle and can easily crack hence the need for its dephosphorization. heat treatment and subsequent leaching is a way for upgrading high phosphorus iron ores field el al, 1968, gooden et al, 1974 muhammed and zhang, 1989, kokal, 1990 aranjo et al, 1994 cheng ...

Us3376130a us43666165a us3376130a us 3376130 a us3376130 a us 3376130a us 43666165 a us43666165 a us 43666165a us 3376130 a us3376130 a us 3376130a authority us united states prior art keywords slag bath phosphorus pig iron iron prior art date 19640303 legal status the legal status is an assumption and is not a legal conclusion.

The acid leaching or bioleaching is used for the dephosphorization of high phosphoruscontaining iron ore. it was reported that acid leaching of high phosphoruscontaining iron ores could dramatically reduce the phosphorus content in concentrates 1316. for example, the hydrochloric acid leaching

Jul 01, 2016nbsp018332high pressure roll grinding hprg and ball milling were compared to investigate the influence of mechanical activation on the acid leaching dephosphorization of a highphosphorus iron ore concentrate, which was manufactured through magnetizing roastingmagnetic separation of highphosphorus oolitic iron ores. the results indicated that when highphosphorus iron ore

Study on dephosphorization technology for highphosphorus iron ore ... in this paper,the importance of dephosphorization process in treatment of highphosphorus iron ore

Dephosphorization treatment of high phosphorus iron ore by . creasing the reduction temperature. the dephosphorization treatment of the pre reduced iron ore by me . chanical crushing and screening methods was evaluated as a function of the initial reduction condition, screen size, and the mechanical property of the reduced iron ore phase. live chat

Thermodynamics of molten iron oxidizing dephosphorization. phosphate brought by iron ore and fluxing agent will be reduced into the molten iron. phosphorus in the molten iron will take indirect or direct oxidation , , , under oxidizing agent or oxidizing atmosphere, and all its oxidation products are gases at high temperatures.

M. elias, h. mitsutaka, dephosphorization treatment of high phosphorus iron ore by prereduction, air jet milling and screening methods, isij international, 512011, 544550. crossref google scholar

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 leaching.

A new approach of removing the phosphorusrich phase from highphosphorous iron ore by melt separation at 1573 k in a super gravity field was investigated. the iron

Dephosphorization treatment of high phosphorus iron ore by . dephosphorization treatment of high phosphorus iron ore prereduction, air jet milling and screening methodsrocessing parameters to improve the total iron yield and the dephosphorization behavior are also proposed 2undamentals of air jet milling the size. more

However, the acid converter steelmaking dephosphorization lowphosphorus of the iron ore a serious impediment to the development of steel production. 1879 thomas s.thomas invented the converter steelmaking method can handle the high phosphorus hot metal alkaline the dephosphorization principle of basic slag is then extended to the open ...

Experimental research on a highphosphorus oolitic iron ore containing 41.65 iron and 1.26 phosphorus that had been treated by suspended ash magnetic roasting, indicated that a concentrate with an iron grade above 60 could be produced by lims, but the phosphorus

Iron oxide ore through a process associated with hydrometallurgy. phosphorus was removed at a temperature of 250c and initial solution ph 2.5, leading to the dissolution of the phosphorus oxide formed. this involved using acid leaching process to remove phosphorus from the iron oxide ore in readiness for steel making process.

Recovery of manganese and phosphorus from dephosphorization slag with wet magnetic separation yongsoo jeong, kazuyo matsubaeyokoyama, tetsuya nagasaka ... manganese and phosphorus exist in coal, iron ore, and limestone, 4 ... element for highquality steel products. phosphorus is thus removed from hot metal molten pig iron to

Iron ore and manganese ore metallurgy conference ... saimm. it is an important producer and exporter of iron ore and manganese ore. south african iron ore ... flotation and solidliquid separation. 13401405 iron ... 09351000 dephosphorization treatment of high phosphorus iron ore

A bessemer ore carrying 52 of iron must not have more than .052 of phosphorus and the sulphur should not exceed .04. but since the presence of phosphorus in pig iron increases the fluidity and tends to make sound castings, ores high in phosphorus are used in making foundry pig iron.

Phosphorus concentration in the melt or degree of dephosphorization on the treatment time of metal by slag. the results of the calculations are presented in figure 7. from the calculated data introduced in a figure 7, follows that the decreasing of phosphorus contents in metal by 40 is a result of metal treatment by slag with an ironore

Phosphorus iron ore cheng et al, 1999 dukino et al, 2000. if steel is produced with high level of phosphorus and sulphur that steel will be brittle and can easily crack hence the need for dephosphorization and

Scrap, hot metal dephosphorization, removal of phosphorus during steelmaking and post treatment of liquid steel, at tata steel, about 6065 of the phosphorus input into blast furnaces comes through the ironbearing raw materials and rest through

Mar 31, 2015nbsp018332highphosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. however, this process is not recommended nowadays because of its high cost and consequent environmental pollution. with the current tendency for development of a lowcost and ecofriendly process, dephosphorization of highphosphorus iron ore through microbial process with

The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and

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 ...

So we must try our best to improve our technique to explore present iron mine resources. in our country there is 7.45 billion tons high phosphorus hematite, about 14.86 percent of total iron resource, but the granule of value mineral is tiny that it is hard for dephosphorization to make it fit for smelting by traditional method.

The range of 1.42.0. in this study, dephosphorization of agbaja iron ore using three acids and in different combinations were investigated. the design of experiment for the valuation of interactive factorial effects on phosphorus removal was also investigated. it is noteworthy that high premium grade iron ores with reduced phosphorus

2017629 183 kuntze herbert iron clogging in soils and pipes analysis and treatment. pitman publishing inc. 1020 plain street marshfield m.a. 1982 vaigjan d. wheatley r.e. and b.g. ord. removal of ferrous iron from field drainage waters by iron ochre control methods. more phosphorus removal from goethitic iron ore with a