Page 5 - MESCO Newsline 11th Edition

--MESCO Newsline

Know Your Plant

SINTER PLANT (MESCO STEEL-1)

n continuity to the last news line articles posted about MESCO-I Sinter Plant, Sinter is an agglomeration of iron ore
I fines and different type of metallurgical waste which is used in blast furnace half cocked raw material

There are basically two types of sinter Process Flow Diagram of Sinter Plant -1 & 2
1. Flux sinter
2. Super flux sinter

Advantages of super flux sinter
• Gainful utilization of huge quantity of iron ore fines
(under size) generated at mines stage.

• Use of super flux sinter in blast furnace burden
eliminates charging of raw flux in blast furnace, making
more scope for iron bearing material i.e. Sinter/ Lump
ore it also helps in substantial reduction in coke rate.
• Other solid metallurgical waste in integrated steel
Plants are gainful utilize in sinter making. Solving a
measure problem of Solid waste disposal.
• Iron ore fines is easily available at much cheaper rate
than lump ore
• As Sinter is pre-flux, reducibility of Sinter is better than
lump ore
• As Sinter is stronger and harder than lump ore so crumpling of Sinter inside Blastfurnace is less ,also, granular zone
inside BF is maintain up to bottom of Furnace hence permeability (Air/Gas flow) inside BF is better
• Sinter size range is narrower so heat distribution inside furnace is better and stable
• AS Sinter is porous than lump so in grace of reducing gas (CO) is better than lump ore, therefore. Reduction process
faster and increase the productivity
• As Sinter is made by agglomerating iron ore fine at high temperature many constituent harmful elements like
Sculpture present in raw material in sinter bed, so less Sulphur input to blast furnace.
• Material handling in blast furnace is easy and least logistic are needed.
SINTER QUALITY FOR BLAST FURNACES:

TFe - 56-57.5%, FeO - 8-10%, Si02 - 4-5.2%, AI203 - 2-3%, CaO - 8-10%, MgO - 2-2.5%, Basicity -1.9-2

STANDARD QUALITY OF RAW MATERIALS AND METALLURGICAL WASTES
USED IN SINTERING PLANT: -
Specification of good quality raw materials for optimum Productivity and quality of sinter is given below. While
procuring raw materials for sintering plant both chemical and physical specifications must be given equal importance.

Almost all quality improvement comes via simplification of design, manufacturing layout, processes & procedures