·The article describes the concept of partially replacing the sinter in a blast furnace charge with extrusion briquettes to form the basis for sintering and briquetting synergy The comparability criteria for sinter and extrusion briquette brex properties and production parameters were analyzed along with a substantiation of the fundamental possibility of partially
slag ratio in blast furnace which makes the performance of blast furnace worse Therefore brand new high grade iron ore is necessary to sintering process Some of high grade iron ores called pellet feed finer than sinter feed has been used in pelletizing process Especially pellet feed of magnetite is expected to use in sintering process
·Pellet and its use in blast furnace Download as a PDF or view online for free in Iron & Steel making • Lower emission rate • Emissions in sintering process are much higher than compared to pelletizing process Decreases the emission rate CO2 by 85% SOX by 90% NOx by 20% compared to sinters Pellets in contrast to sinter and lump
· Pelletizing Process Similar to sintering pelletizing is another widely used process to agglomerate the iron ore Sinter plants are usually located near the blast furnace plant but pelletizing plants are often located near the mining site Some works have both pelletizing and sintering plants at the smelter sites
·Consequently despite the unquestioned benefits of sinter on blast furnace BF performance intense interest in the pelletizing process had developed because of the outstanding performance achieved by steel plants in extended operations with pellets as the principal iron bearing material in the blast furnace burden
·Pellets have the advantages of high grade low gangue content and good metallurgical properties compared with sinters [] The energy consumption of pelletizing process is less than 50% of that of sintering process and the emissions of flue gases dioxins nitrogen oxides and dust are also significantly lower than that of sintering [] The development of
·The sinter heating process in a reduction furnace can be simulated using the CaO Fe 2 O 3 SiO 2 ternary diagram of Fig Additionally different alternatives to the sintering and pelletizing techniques are described HPS process hybrid pelletized sinter; MEBIOS mosaic embedding iron ore sintering; and CAP composite agglomeration process
·Iron ore lump sinter and pellets comprise the main burden of modern blast furnaces However sinter and pellets are now the dominant blast furnace burden because the natural lump supply has declined dramatically due to depletion of the world s high grade competent iron ore resources The pelletizing process involves the preparation of
·MgO participates in all stages of sintering pelletizing and blast furnace ironmaking and synergistically optimizing the distribution of MgO in ferrous burden can effectively enhance the interaction within the ferrous burdens and optimize the softening melting properties of the mixed burden Magnesium containing pellets mixed with low MgO sinter or mixed with
·furnaces with total production volume mln tons per year Such briquettes are added to the blast furnace charge 10 15 kg per ton of cast iron Roller press briquetting is also used in non ferrous met allurgy for agglomeration of copper nickel concentrates In 2011 Norilsk Nickel mining and metallurgical com
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