Products of Research at Steelmint

CONTENTS:-SteelTerms related to steel & steel productsCommercial Forms of IronGrades of Iron oreCoal/CokeFerro alloy

STEELSteel is an iron based alloy containing Carbon, Silicon,

Manganese etc.

Terms related to Steel & Steel Products

Sponge Iron/DRI (Direct Reduced Iron)• Produced by direct reduction of iron ore

Scrap • Materials left over from product consumption such

as vehicles, building supplies etc.• It is recyclable

Pig Iron• Produced by melting iron ore under high

pressure with Charcoal and limestone• High Carbon content makes it brittle &

unstable

Commercial forms of IRON derived from Pig iron by melting & blending

Pig IronCast iron (2.5% carbon)

Wrought Iron

(purest form,0.25%

carbon)

Steel (0.5%-1.5%

Carbon)

Grades Of Pig Iron:-a) Foundry Grade Pig Iron b) Basic/Steel Making Grade Pig Iron

Terms related to Steel & Steel Products continue…

Ingot• Metal that is cast into a shape suitable for further processing• Manufactured by the freezing of molten liquid in a mold e.g.-

Gold ingot,Aluminium Ingot etc.

Billet• Small semi-finished casting products that is

rectangular,square,circular in shape area< 36 sq. in• Further processed via profile rolling & drawing

Re Bar• Commonly known as Steel Bar• Used as Tensioning device, anchoring purpose

Grades Of Iron Ore

Low Grade (-62% Fe)

Medium Grade (+62-65% Fe)

High grade (+ 65% Fe)

Trade of Iron Ore

Lumpy/Fine Ore : Iron Ore is traded in lumps (i.e. sized ore) or in fines. Production/availability of lumps is limited by virtue of the natural occurrence and also because of generation of lot of fines during crushing of large lumps present in the run-of -mines.

COAL/COKE

Coal is a naturally occurring combustible rock containing 70% (by Vol) carbonaceous material

including moisture. Cooking Coal

Non cooking coal

COAL classification

• Coke: Coke is the residual solid product obtained upon carbonisation of coking coal

Ferro Alloys

It refers to various alloys of iron with a high production of one or more other element e.g.managanese, silicon etc.

Used in production of steel s and alloys as a raw material

Ferro Alloys are used to add characteristics of anti-Corrosion & de-oxidation

Widely used to produce chemicals, Welding Electrodes, Electrical equipments etc.

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