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Wear Resistant Alumina Tiles
Introduction
A research centre offers the technology
of wear resistant alumina tiles. The tiles are developed by
using cheap Indian alumina powder and sintering additives.
Their composition is optimized and are produced through liquid
phase sintering.
The properties of the alumina tiles developed
by the Centre vis a vis commercially available ones are as
follows:
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Property
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Research centre produced sample
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Commercially available sample
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Density (gm/cc)
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3.66
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3.59
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Hardness HV30
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1150
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127
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Fracture toughness (MPam)
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3.62
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3.56
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Modulus of Rupture (MPa)
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324
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302
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Colour
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white
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white
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Volume loss per gram of abrasives
[(cc) x 10-8]
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1.45
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2.30
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Areas of Application
- Power plants
- Chutes and air separators
- Hydrocyclones for separating mined
ores from refuse
- Slurry pipes in coal washeries
- Pulp and paper mills for transporting
acidic wood chips
- Hoppers, pipes, bends, elbows in cement
industry
- Treatment of flyash and bottom ash
in coal fired power plants
Advantages
- Simple and cost effective process
- Process optimisd with Indian raw materials
- Excellent wear properties of the produce
in dry as well as wet conditions
Development
Status: The technology is patented
Production
Capacity: 300 tons/year
Inputs Required
Land:
5,000 sq.m.
Building: 3,000 sq.ft
Manpower: 23 total, including
9 skilled, 9 unskilled, 5 managers
Economic Data
- Capital investment: INR 25.8.million
(US$ 0.53 million approximately)
- Working capital: INR 4 million (US$
0.083 million)
- Production cost per kg: INR 70
- Expected rate of return: 28%
- Break even point: 35%
Transfer Forms
Know-how, manufacturing license, technical training, erection,
commissioning and installation, marketing assistance
Contact for
more information
Research Planning & Business Development
Central Building Research Institute,
Roorkee- 247 667 (India)
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