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Calcium Oxide

Introduction

Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkalinecrystalline solid at room temperature. The broadly used term “lime” connotes calcium-containing inorganic materials, which include carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate, such as limestone. By contrast, “quicklime” specifically applies to a single chemical compound.

 

Manufacturing Process of Calcium Oxide

Lime Stone is extracting from quarries & Sized through a Crusher. Then Sized Lime Stone is transported to Lime Kilns. To Calcine Lime Stone there must be a significant transfer of heat to the Lime Stone. There is 3 stages of Calcination process [1] Preheating [2] Calcination [3] Cooling.

 

Specification

Calcium Oxide / Burnt / Calcined / Unslaked Lime
Physical Shape

Lumps

Lumps

Lumps

Calcium Oxide

CaO

92

90

85

Calcium Carbonate

CaCO3

2

4

6

Magnesium Oxide

MgO

1.1

1.4

2.0

Acid Insoluble

SiO2

1.5

1.8

2

Alumina

Al2O3

trace

trace

trace

Iron

Fe2O3

trace

trace

trace

Chloride

Cl

nil

nil

nil

Size/Mesh

(BSS)

2-4”

2-4”

2-4”

 

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