Chemicals

Al2O3

99.51%

SiO2

1.18%

Fe2O3

0.11%

TiO2

2.12%

Grit size

80%

Al2O3

99.0%

Fe2O33

0.009 – 0. 012%

SiO2

0.01 – 0. 015%

TiO2

-

Na2O

0. 35 – 0. 45%

L.O.I. ( AT 1100 DEG. C)

0. 6 – 0. 8

a – Al2O3 phase

<5%

+ 325 mesh

90%

Specific Gravity, g/cc

3. 4 – 3. 6

Median Particle Size ( micron ) d50

70 – 85

Bulk density ( g / cc )

0. 9 – 1.1

Test item

Standard requirements

Test results

Specific surface area ( m2/g)

200 + 20

202

Ph value

3. 7 – 4. 5

4. 12

Loss on drying @ 105 deg. C (5)

< 1. 5

0. 47

Loss on ignition @ 1000 deg. C (%)

< 2. 0

0. 66

Sieve residue (5)

< 0. 04

0. 02

Tamped density g/l

40 – 60

44

SIO2 content ( % )

> 99. 8

99. 88

Carbon content (%)

< 0. 15

0. 06

Chloride content (%)

< 0. 0202

0. 009

al2o3

< 0. 03

0. 005

tio2

< 0. 02

0. 004

fe2o3

< 0. 003

0. 001

Silica

SiO2

0. 58%

Alumina

Al2O3

0. 23%

Ferric Oxide

Fe2O3

0. 09%

Titanium Dioxide

TiO2

NIL

Calcium Oxide

CaO

55.18%

Calcium Carbonate

CaCO3

98. 49%

Magnesium Oxide

MgO

0. 20%

MagnesiumCarbonate

MgCO3

0. 42%

Sulphur

SO3

0. 008%

Phosphorus

P2O5

0. 009%

Loss on Ignition

43 . 60%

Silica

SiO2

0. 37%

Alumina

Al2O3

0. 20%

Ferric Oxide

Fe2O3

0. 04%

Titanium Oxide

TiO2

Nil

Calcium Oxide

CaO

55. 46%

Calcium Carboante

CaCO3

98.98%

Magnesium OxideCarbonate

MgO

0.16%

Magnesium Carbonate

MgCO3

0. 33

Sulphur

SO3

0. 007%

Phosphorus

P2O5

0. 003%

Loss on Ignition

-

43. 70%

Oil Absorption

-

21. 59%

Water Absorption

-

39 . 43

Bulk Density

.

1.17% gm/cc

Alkalies etc. by difference

0. 06%

Whiteness by reflection Compared with MgO takenas 100%

-

99. 00%

Description

White Powder

Subs. Insoluble in acid

0. 31%

Arsenic

Complies

Heavy Metals

Complies

Barium

Complies

Iron

Complies

Magnesium and Alkali metals

0. 63%

Chloride

Complies

Sulphate

Complies

Loss on drying (at 200 Deg.C for 3 hours)

0.2150%

Tapped density

0.8930 gm/l

Particle size

98.00% through 300 mesh

Assay (on dried basis)

98.90%.