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Abrasive Raw Materials

We offer the highest quality of Abrasive Raw Materials that includes White Fused Alumina, Brown Fused Alumina, Calcined Brown Fused Alumina, Black and Green Silicon Carbide, Pink Fused Alumina, Zirconia Alumina, Emery and Semi-Friable Alumina.

White Fused Alumina

White Fused alumina is produced by fusing calcined alumina in an electric arc furnace. This white fused alumina lumps is then crushed and graded to produce WFA grains and fines for abrasives and refractories.

WFA is used extensively used in vitrified abrasives in critical areas where Iron free grinding is required.

In refractories WFA is used in high alumina bricks, castables and continuous casting refractories.

Items		Unit	Index	Typical
Chemical composition	Al2O3	%	99.00min	99.52
	SiO2	%	0.20max	0.11
	Fe2O3	%	0.10max	0.07
	Na2O+K2O	%	0.40max	0.23
Refractoriness			1850min
Bulk density		g/cm3	3.50min
Mohs hardness		---	9.00min
Principal crystalline phase		---	α-Al2O3
Refractory grade	Grain	mm	0-1, 1-3, 3-5,5-8
		mesh	-6+10,-8+16,-16+30,-30+60,-60
Grit abrasive grade			F14, 24, 46, 100,180 220

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Brown Fused Alumina

Brown fused alumina is widely used in bonded and coated abrasives for the grinding of metals. Produced by fusing calcined bauxite in a reducing atmosphere, this help in removing residual sulphur & carbon and improves toughness, thus an ideal material for vitrified abrasives usage. Our range is available in standard grit and powder sizes to meet varied needs of clients.

Items		Unit	Index	Typical
Chemical Composition	Al₂ O₃	%	95%min	95.5%
	SiO₂	%	1.50max	1.33%
	Fe₂O₃	%	0.30max	0.18%
	Ti₂O	%	3.50max	2.45%
	CaO	%	0.30%	0.11%
Melting point			2050
Refractoriness			1980
True Density		g/cm³	3.90min
Mohs hardness		------	9.00min
Grain size		mm	0-50, 0-1, 1-3, 3-5, 5-8
Fine powder		Mesh	-100, -200, -325
Abrasive grade		FEPA	F12-F30 F150-F220

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Zirconia Alumina

Zirconia alumina is used for producing abrasives of very high toughness with long life. Produced by cleaning and crushing fused electocast blocks, it has nil porosity, high density and excellent refractoriness. It is generally used as sand blasting medium and as an abrasive in foundry and casting processes.

ZA-25

Brand Spec	AZ-25 Special Grade	AZ-25 A Grade	AZ-25 B Grade (China Standard)
ZrO₂	23%min	23%min	23%min
Al₂O₃	70%min	70%min	68%min
SiO₂	0.5%max	0.6%max	1.5%max
Fe₂O₃	0.1%max	0.3%max	0.5%max
TiO₂	0.5%max	1.5%max	3.0%max
True density (g/cm³)	4.2min	4.2min	4.2min
Colour	Gray or Fresh grey	Gray or Fresh grey	Gray or Fresh grey

ZA-40

Brand Spec	AZ-40 Special Grade	AZ-40 A Grade	AZ-40 B Grade (China Standard)
ZrO₂	38%min	38%min	38%min
Al₂O₃	56%min	56%min	56%min
SiO₂	0.3%max	0.5%max	1.5%max
Fe₂O₃	0.1%max	0.3%max	0.4%max
TiO₂	0.3%max	1.5%max	3.0%max
True density (g/cm³)	4.4min	4.4min	4.4min
Colour	Gray or Fresh grey	Gray or Fresh grey	Gray or Fresh grey

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Calcined Brown Fused Alumina

Calcined Brown Fused Alumina is produced by calcining BFA at 1300 degrees. This removes residual Sulphur and Carbon and improves toughness thereby making it ideal for Vitrified Abrasives usage.

Detailed Product Description

Calcined Brown Fused Alumina at 1300 degree
Al₂O₃ 95% min, SiO₂ 1%max, Fe₂ O₃ 0.3%max, TiO₂ 3% max.

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Semi Friable Alumina

Semi Friable Alumina is low titanium brown fused alumina. We call semi-friable fused alumina. It has higher hardness and friability ability compaired with brown fused alumina.It offers good cutting performance in fast and can be widely used in bonded abrasives for working with heat sensitive metals and alloys, soft non-ferrous metals and rubber plastic,wood etc.

Chemical Composition:

Al2O3: 97.5MIN
Fe2O3:0.15MAX
SiO2:0.5MAX
TiO2:1.5MAX

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Pink Fused Alumina

Pink Fused Alumina is produced by doping Chromia into Alumina to introduce toughness. These barasives are mainly used for Tool room applications.

Pink Alumina Oxide

1. Pink Alumina Oxide – Low Chromium

Items		Unit	Index
Chemical Composition	Al₂ O₃	%	98.00min
	Gr₂ O₃	%	0.2-0.45
	Na₂ O	%	0.4-0.7

2. Pink Alumina Oxide – Medium Chromium

Items		Unit	Index
Chemical Composition	Al₂ O₃	%	97.00min
	Gr₂ O₃	%	0.45-1.00
	Na₂ O	%	0.4-0.70

3. Pink Alumina Oxide – High Chromium

Items		Unit	Index
Chemical Composition	Al₂ O₃	%	96.00min
	Gr₂ O₃	%	1.00-2.00
	Na₂ O	%	0.4-0.70

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Fused Alumina Bubble

Fused Alumina Bubble is produced by blowing the melt of Calcined Alumna in a controlled atmosphere to produce hollow spheres. Due to its low density, fused alumina bubble is ideal for high alumina based Insulating Bricks and castables.

Index Properties		Guarantee value	Typical value
Chemical Composition(%)	Al₂O₃	99min	99.51
	SiO₂	0.2max	0.14
	Fe₂O₃	0.1max	0.05
	Na₂O	0.4max	0.25
Packing density(g/cm³)		0.5-1.0	0.74
Damaged rate(%)		<15	12
Refractoriness(⁰C)		1800
Particle Size		5-0.2mm, 0.2-1mm,1-3mm,3-5mm
Test standard		GB/T3044-89
Packing		20kg/plastic bag(Dampproof)
Usage		Refractories

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Calcined Bauxite

Calcined Bauxite is produced by calcining raw bauxite in a rotary, shaft or round Kiln. Calcined Bauxite is a major ingredient in making various types of Alumina Bricks and castables.

RKB 85: AI203:85%(min)

Fe203:2%(max)
TiO2:0.4%(max)
CaO:0.4%(max)
MgO:0.3%(max)
B.D.(g/cm3):3.0(min)

RKB 86: AI2O3:86%(min)

Fe2O3:1.8(max)
TiO2:0.4%(max)
CaO:0.4%(max)
MgO:0.3%(max)
B.D.(g/cm3)3.1(min)

RKB 88: AI2O3:88%(min)

Fe2O3:1.6%(max)
TiO2:0.4%(max)
CaO:0.4%(max)
MgO:0.3%(max)
B.D.(g/cm3):3.2(min)

RKB 90: AI2O3:90%(min)

Fe2O3:1.6%(max)
TiO2:0.4%(max)
CaO:0.4%(max)
MgO:0.3%(max)
B.D.(g/cm3):3.3(min)

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Emery Bauxite

Emery Bauxite is produced by sintering raw bauxite in a special kiln and is used for low end polishing and abrasive applications. Procured from reliable vendors of market, our range is known for its chemical purity, low magnetic iron controlled particle size distribution and high density. Further, these are tested as per international standards and offered at industry leading prices.

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Black And Green Silicon Carbide

Silicon Carbide Black is used widely in Bonded and Coated abrasives for the grinding of Non metals.

Green Silicon Carbide is purer, harder and is used for special grinding applications.

Reference Chemical Composition (weight%) of silicon carbide of non-abrasives application

Type	Reference Chemical Composition (weight %)			Girt Size
Type	SiC(min)	F.C (max)	Fe₂O₃(max)	0-1mm, 1-3mm, 3-5mm, 5-8mm, 150#F, 200#F, 325#F, For customers
TN98	98.00	1.00	0.80
TN97	97.00	1.50	1.00
TN95	95.00	2.50	1.50
TN90	90.00	3.00	2.50
TN88	88.00	3.50	3.00
TN85	85.00	5.00	3.50
TN70	70.00	10.00	3.50
TN60	60.00	12.00	3.50
TN50	50.00	15.00	3.50

Chemical Index of Green Silicon Carbide for Concentration Grinder

rand	Girt Size	Chemical Composition (%)
GC		SIC(min)	F.C.(max)	Fe₂O₃(max)
	F12-F90	99.0	0.20	0.20
	F100-F150	98.5	0.25	0.50
	F180-F220	97.5	0.25	0.70
	W63-W20	97.0	0.30	0.70
	W14-W10	95.5	0.40	0.70
	W7-W5	94.0	0.50	0.70

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