|
Title
of Technology to be offered
|
Wear Resistant Ceramics
using Fly Ash
|
|
Type
of Technology
|
Indigenous
|
|
Area
of Technology
|
Materials & Material
Science
|
|
Details
of Present/existing Technology. Shortfall/Technological gaps in the
existing technology
|
The existing technology
uses costly raw materials such as alumina, kaolin, etc. causing the
higher cost of production. Also the sintering temperature in existing
technologies is quite high (1700-18000C), thus more energy
consumption.
|
|
Approach
adopted in new technology to evade technological gap in the existing
one
|
Fly Ash has been used as
one of the major raw material to partially substitute the alumina. The
Fly Ash consists mainly of silica and alumina, the alumina present in
Fly Ash was used as source and Silica as bonding materials.
|
|
Advantage/Benefits
of new technology (with in 150 words)
|
The present technology uses
fly ash as one of the major raw materials which is a waste of thermal
power plants and causing serious environmental problem. So the major
advantage is mitigation of pollution. Gainful utilisation of fly ash,
cost and energy savings are the added advantages.
|
|
Constraints
in technology (if any)
|
The free carbon content
should be <5% and iron content should be <2% in fly ash
otherwise it will adversely affect the product quality.
|
|
Brief
description/abstract (150 words)
|
The type of wear resistant
ceramic products can be produced using 10,25 and 40wt% fly ash for
high, moderate and low wear resistant applications. The products are
harder than tool steel and next to dimond on Moh's scale of hardness.
These extremely hard, dense and impenetrable ceramics, which finds a
number of industrial applications, substantially decrease the
maintenance cost of equipment and increase the life of components 8-10
times to that of metal. There can be many successful application of
the presently developed wear resistant ceramics in place of alloy
sttel, basalt and high alumina liners.
|
|
Major
raw material
|
Fly Ash, Technical Alumina,
Alumino-silicate minerals, additives
|
|
Major
Plant Equipment/Machinery
|
Weighing machine, Ball
Mill, Filter press, Granulator, Mixture, Hydraulic Press, Kiln.
|
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Area
of application
|
|
|
Details
of specification application
|
Areas which are prone to
wear such as material handling equipment, pipe lines, chutes, bunkers,
hoppers, ball mills, etc.
|
|
Status
of Development
|
Pilot Plant Scale
|
|
Ecological/Environmental
Impact (if any, specify
briefly)
|
The present technology will
help in reducing pollution control as it uses fly ash, which is waste
material
|
|
Patenting
details
|
1264/DEL/93,
I ndia
|
|
Extent
of Commercialisation
|
Under the process of
commercialisation
|
|
Technology
Transferring Agent
|
NML/CSIR
|
|
Technology
Transfer Assistance Offered (Optional)
|
(a) Process Know-How, (b)
Details of the Equipment, (c) Plant lay-out, (d) Assistance in setting
up a plant on separate terms
|
|
Key
words
|
Fly Ash, Alumina, Wear
Resitant, Pollution Control, Ceramics
|
|
Country
of origin
|
India
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