1 · The third process is the coal-based rotary kiln SL/RN (Stelco-Lurgi/Republic Steel-National-Lead). Because of the disadvantages of the HyL I retort process regarding economy and product quality the company Hojalata y Lamina developed in the beginning of the 1980ies the HyL III shaft furnaces process.
view more20221116 · A manufacturing process flow chart is a diagrammatic representation of the procedure. It helps to organize tasks in chronological order and identify essential steps, such as manufacturing & assembly, quality assurance, …
view more4 · A Process Flow Diagram (PFD) is a type of flowchart that illustrates the relationships between major components at an industrial plant. It's most often used in chemical engineering and process engineering, though its concepts are sometimes applied to other processes as well. It’s used to document a process, improve a process or model …
view more201591 · The process flow diagram (PFD) of a conventional coal based sponge iron plant is shown in Fig. 1. Different streams in the PFD are assigned individual number and henceforth each stream will be referred through its respective number.
view more2023426 · Coal based DRI units are critically air polluting in nature emitting high concentration of particulate matter from point sources [ 2, 4 ]. Figure 1 shows a schematic diagram of the DRI process including the various waste outlets. Fig. 1. Schematic process flow diagram of DRI, showing sources and exit points for wastes Full size image
view more2017825 · At first the SL/RN groups devel oped their processes separately. Both used the rotary kiln as reactor and fixed carbon as reducing agent whereas the treatment of ores was different. In its original design, the SL process was utilized exclusively for the production of sponge iron from high-grade iron ores for use in steelmaking furnaces. As far as low …
view more2017222 · The process description. The most innovative feature of the Corex process is the separation of the iron reduction and smelting operations into two separate reactors, namely reduction shaft and melter-gasifier. In the two-stage operation of the process DRI produced from a shaft furnace is charged into a melter-gasifier for smelting.
view more202444 · A Direct Reduced Iron plant is a furnace that produces Direct Reduced Iron (DRI), also referred to as sponge iron due to its porous nature. The process can also produce Hot Briquetted Iron (HBI). The iron can then be used to produce steel via other production routes, such as the Electric Arc Furnace (EAF). The process uses iron ore (in …
view more2019127 · DRI fines, generated during its manufacture and handling, generate high content of fines in the size fraction less than 2 mm. It has iron content above 80%. It is difficult to directly use such iron-rich material in the primary steel making process, without agglomeration. At JSW Steel Vijayanagar, around 50 to 70 tons per day of DRI fines with …
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