Feb 16, 2017· Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slagforming agents, and solid fuel (coke). The purpose of the sintering process is manufacturing a product with the suitable characteristics (thermal, mechanical, physical and chemical) to be fed to the blast furnace.
For general information about merchant pig iron, please visit the pig iron page. Modern blast furnaces produce more than 10,000 tonnes per day. Blast Furnace Process. The blast furnace is a countercurrent gas/solids reactor in which the descending column of burden materials [coke, iron ore and fluxes/additives] reacts with the ascending hot gases.
Sintering is a process of agglomeration of iron ore fines, fluxes, recycled products, slagforming elements and coke with the purpose of achieving an agglomerated product with the suitable ...
The term induration describes the hardening of a powdery substance. For example, in steel production, iron ore pellets are fed into melt furnaces. To avoid dusting and loss of ore, small oxide particles are agglomerated by sintering. Although initially applied to iron ore, soon the briquette agglomeration concept spread to a variety of materials .
The large, refractory lined furnace is charged through its top with iron as ore, pellets, and/or sinter; flux as limestone, dolomite, and sinter; and coke for fuel. Iron oxides, coke and fluxes react with the blast air to form molten reduced iron, carbon monoxide (CO), and slag. The molten iron and slag collect in the hearth at the base of the furnace.
been tested as a replacement for coke breeze in iron bearing materials sintering. Generalized knowledge is introduced about charcoal use from the results of these studies in the following text [2,5,6]: It is possibly e ective to replace about 20 30% of coke breeze by charcoal in agglomeration; Replacement of coke breeze by charcoal has been
ABSTRACTSintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slagforming elements and coke. The purpose of sintering is to obtain a product with suitable composition, quality and granulometry to be used as burden material in the blast furnace. This process is widely studied and researched in the iron and steelmaking industry.
Griffcn, Coal and Coke Consultant, Pitts burgh, Pa., presiding. Henry Epstein, presiding HENRY EPSTEIN, CHAIRMANAlthough a Coal and Coke Consultant, John Griffen has rcccntlp completed a quitc compre hcnsivc study of almost all of the current iron ore reduction processes. My Co Chairman, Mr. Griffen, will introduce the first speaker.
in productivity and decrease coke rate. Pellets are approximately spherical lumps formed by agglomeration of the crushed iron ore fines in presence of moisture and binder, on subsequent induration at 1300°C. In these times with the areas of iron ore use increasi ng, it is very important to use raw
The iron ore is smelted to produce an impure metal called "hot metal" when in liquid phase or "pig iron" when in solid phase. In smelting, a reducing agent usually coke and heat are used to remove oxygen from the metal ore. Carbon dioxide (CO. 2) and carbon monoxide (CO) are .
Pellets around 410 mesh provide a happy medium between iron ore fines (crushed/ground iron ore) and a chunk of iron (mined) for use in a blast furnace. Pelletization offers an effective solution to the items noted above. The 'recipe' for successful pelletization, however, is determined through testing. Iron Ore Agglomeration Tests
The blast furnace is a countercurrent gas/solids reactor in which the descending column of burden materials [coke, iron ore and fluxes/additives] reacts with the ascending hot gases. The process is continuous with raw materials being regularly charged to the top of the furnace and molten iron and slag being tapped from the bottom of the furnace at regular intervals.
For example, in 2000 the amount of crude iron ore produced was 208 million tons. In addition 158 million tons of waste material was produced for a total of 331 million tons of materials handled in iron mining in 2000. From 1994 to 2000, the average annual ratio of waste .