The interior of a furnace producing high carbon ferromanganese consists of two main zones with different characteristics the low temperature prereduction zone, and the high temperature coke bed zone.As the raw - materials move down in the pre-reduction zone, the higher oxides of manganese are pre-reduced in solid state to mn 3o.
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Fig 1 major advanced technologies and the features of a modern high capacity blast furnace.Raw materials preparation technologies.Major raw materials preparation technologies include i use of sinter with low silica content and high reducibility, ii optimizing of coal blending for coking of coals, iii blending technology for raw materials, iv control of load of harmful elements, v.
Chat OnlineDaily average slag and the corresponding hot metal samples were collected from blast furnace no.3 1033m3 useful volume of the egyptian iron and steel company eisco charged with 100 self- fluxing sinter over a period of two months from july to august 2015.The analyses of slag and metal were used to investigate the effects of temperature and basicity, defined as caosio2, on manganate.
Chat OnlineBlast furnace operation at a glance the purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called hot metal.The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.
Chat OnlineLess and manganese iron ratio should be high.But it has been observed that the phos content in the ore mined is steadily showing an upward trend and manganese iron ratio is also decrea- i ii iii iv low grade manganese ore blast furnace high grade manganese ore ferro manganese other industries for export 8.8 7.1 0.84 4.5.
Chat OnlineThe two-stageproducrlon of high-carbonferromanganese in a blast furnace 155.By-producl i pig ir hcfdmn.One of these is the use of high-basicity, high mgo manganese sinter and lime lump instead of limestone,.Its quality has a significant effect on the melting result.N order to keep the operation running.
Chat OnlineHow a blast furnace works introduction the purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called hot metal.The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.
Chat OnlineNational institute of technology rourkela certificate this is to certify that the work in this thesis report entitled optimization of blast furnace parameters using artificial neural network which is being submitted by mr.Dhirendra kumar roll no 213mm2479 of master of technology, national institute of technology rourkela, has been carried out under my supervision in partial.
Chat OnlineKeywords manganese, agglomerates, sinter, smelting, reduction,fluxes.1.Introduction manganese alloy is produced in a submerged electric arc furnace or in blast furnaces.The reduction of manganese oxide in blast furnace has in the recent years become more unusual due to the high consumption of carbon materials 4.During mining.
Chat OnlinePractically studying the situations faced by the blast furnace femn producers.2 studies on production of high carbon ferromanganese in blast furnace with high proportion of sinter and improvement in manganese recovery.Xiaoxing xiong, daolin liu.The proceedings of infacon viii, beijing, china, june 1998.
Chat OnlineBlast furnace.Here, iron is produced for use in castings or as a charge mate-rial in subsequent steelmaking proc-esses.To produce one ton of hot metal iron a modern blast furnace requires a total weight of about 5.26 tons of charge materials.These are 1.67 tons of iron bearing materials pellets, sinter, ore, mill scale, scrap,.
Chat OnlineEffect on hot metal composition has been considered.Tuyere-injection of flue dust into the blast furnace might have similar effects as those foundin these studies.Injections of fines of fluxes and iron oxide in some blast furnaces to decrease the si content of hot metal have been tested 6-12.In a study of simultaneous injection of coal and.
Chat OnlineBlast furnace mn recovery slag high basicity upper limit avoid 2cao.Sio2 formation high mgo al2o3 15 to avoid mgo.Al2o3 formation high temperature where liquid metal and slag drip through coke here most of the reduction occurs sinter must have the required chemistry and a short range of softening temperature air blast must be injected.
Chat OnlineShow high reducibility, strength and resistant to crumble, to put in other way, suitable to be used in the blast furnaces 20.Since converter slag is a calcined material, loss of ignition is low, so in a way, converter slag is a low-grade sinter 8.In companies which charge higher rate of sinter in blast furnaces it will be more.
Chat OnlineBlast-furnace production the production of pig iron by the reduction smelting of iron ores or pelletized iron-ore concentrates in blast furnaces.It is a branch of ferrous metallurgy.History.Pig iron was known four to six centuries before the common era.The blast-furnace industry took shape as a result of the development of the blooming processthe.
Chat OnlineThe products of the blast furnace are pig iron hot metal and slag from the lower part of the furnace and flue dust and blast furnace gas from the top.Prepared raw materials for blast furnace namely sinter, iron ore lump, coke and additives like manganese ore, quartzite, limestone.
Chat OnlineAbstractthe effects of the simultaneous injection of mgo and magnesite powder on the combustion of coals, properties of the primary slag, and softening-melting properties of the burden were investigated.There were four aspects to the results that we obtained.First, mgo showed catalytic activity for dehydrogenation and carboxyl group removal from coal as a result, with increasing mgo, the.
Chat OnlineP.Besta et al.Alkaline carbonates in blast furnace process alkaline carbonates get into blast furnace especially from sinter and pellets, but also from raw materials that are fed directly into the blast furnace, i.E.Lump ore, limestone or dolomite 7.Carbonates of sodium and potassium, which melt at temperatures of 850 c and.
Chat OnlineSinter plants agglomerate iron ore fines dust with other fine materials at high temperature, to create a product that can be used in a blast furnace.The final product, a sinter, is a small, irregular nodule of iron mixed with small amounts of other minerals.
Chat OnlineCombustion process.The iron in the processed ores must be dissolved out by chemical processes.This requires an element that binds oxygen more strongly than iron.This is exactly what carbon can do as a reducing agent.The carbon is fed to the blast furnace in the form of coke pyrolyzed coal from the coking plant.At sufficiently high temperatures, the carbon can participate directly in the.
Chat OnlineUsed as feed to a sinter plant will produce a sinter suitable for use in a blast furnace.The feed to the blast furnace should be permeable slightly porous, but not too porous since this could have an adverse effect on sinter properties and have a high strength.A few standard tests are available to evaluate raw materials for use in the.
Chat OnlineA study of the flow characteristics of blast furnace slag is important to record the softening and melting phenomena in blast furnace which greatly influence the extent and location of the cohesive zone having a direct say on the blast furnace operation, quality of hot metal and the coke consumption.
Chat OnlineThus, high top pressure promotes development of large blast furnace.The dimensions of throat gap for large blast furnaces have important effect on burden distribution.It is necessary to develop large diameter and low shaft furnace with more tuyeres of optimum small dimensions.
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