Travelling Grate in Pellet Plant | Pellet making furnace by Subhajit Mondal | Pelletizing process

Поділитися
Вставка
  • Опубліковано 16 вер 2024
  • Benefits :-
    Produces uniform pellets with excellent metallurgical and physical properties
    Improves fuel efficiency and allows for changing feed materials with advanced burner design
    Spans a wide range of plant capacities, up to 9.25 million t/a
    Offers efficient heat recovery for reuse in the pelletizing process
    Provides highly efficient gas cleaning, designed to suit the local regulations and minimize emissions.
    Outotec's traveling grate pelletizing process consists of a green balling section where, after the mixing stage, green pellets are formed either by rolling on discs or in drums. The green pellets are then screened and heat-hardened in the indurating furnace.
    The process comprises four steps:
    Raw material preparation and mixing
    Green pelletizing
    Pellet hardening (indurating)
    Hearth layer and product screening
    In order to adjust the moisture content, water is added in the mixing step. The ore is then mixed with small amounts of binding agents. Fluxes such as limestone, olivine, and dolomite give the pellets the necessary physical and metallurgical properties for further processing. The green pelletizing step is where the pellets are formed using pelletizing discs or drums. Drums use a two-stage process where undersized pellets are returned to the drum via a roller screen. This is in contrast to discs using a single process step to discharge pellets from the disc rim within a very narrow size range. Pellet size can be precisely adjusted by varying the disc inclination, circumferential speed, and feed or water addition rates.
    #Travelling Grate #pellet making furnace #pelletizing process
    During induration, the green pellets are distributed evenly across the traveling grate and then hardened in a furnace where they pass through updraft drying, downdraft drying, preheating, firing, afterfiring, and cooling zones. Our unique updraft and downdraft drying sequence significantly reduces fuel consumption. The homogeneous pellet charge on the grate reduces the pressure drop within the furnace, which further reduces energy consumption and enables an even heat treatment, resulting in high-quality pellets.

КОМЕНТАРІ • 22