A Presentation on
Refractory for Thermal
Power Plant
Roadmap
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Introduction
Challenges to power sector
Product range
Product data sheet
Introduction
As we all know, India is a developing country. With
the introduction of economic reforms and after being a
part of the WTO, India is on the high road of
development.
Power generation is the backbone of a developing
economy. With the rise in industrial production as well
as the uplift of life of people, coupled with a sharp rise
in the housing sector, India is witnessing an
unprecedented growth in the demand for power.
Contd.
As a consequence to this, power sector is growing and
the growth in power sector seems to have come to stay.
With this backdrop, refractories for power plants
promise to be on an ever-growing demand.
PASSARY MINERALS LTD., Rourkela, India, a
pioneering company in producing technology-intensive
and technologically challenging refractories, offers a
basket of refractory products for the Power sector.
Refractories for Thermal Power Plants
Challenges
Refractories for Power Plants are subject to
the following challenges:
1. Severe Abrasion Resistance.
2. High level of Corrosion / Sulphur attack.
3. High Thermal Spalling.
4. Carbon Monoxide attack.
5. Alkali attack.
PASHEAT K
PASHEAT A
PASHEAT 95
PAS ULCM 70TA
PAS LC 70SC
PASULYTE - 11 HIPER
Refractories for Thermal Power Plants
Product Range with features
Our product range for the above include :
A. Medium Temperature Dense Castable PASHEAT K :
1. Best at the medium temperature range i.e.1000 – 1300
degC.
2. High Refractoriness.
3. Good against Carbon Monoxide attack.
Refractories for Thermal Power Plants
B. High Temperature Dense Castable PASHEAT A :
1. Best at the higher temperature range i.e.1300 – 1600
degC.
2. High spalling resistance.
3. High refractoriness.
4. Good abrasion resistance.
5. Strong against sulphur attack.
Refractories for Thermal Power Plants
C. High Purity High Temperature Dense Castable PASHEAT
95 :
1.Best at the higher temperature range i.e.1600 degC +
range.
2.Very High Refractoriness.
3.Very High Abrasion Resistance.
4.Very High Spalling Resistance.
5.Exceptionally strong against sulphur attack.
Refractories for Thermal Power Plants
D. Ultra Low Cement Tabular Alumina containing castables
PAS ULCM 70TA :
1. High Spalling Resistance.
2. Consistently High strength at all temperatures.
3. High Abrasion Resistance.
4. Good against Corrosion.
Refractories for Thermal Power Plants
E. Silicon Carbide containing Low Cement Castable
PAS LC 70SC :
1. Very High Corrosion Resistance.
2. High resistance against Alkali attack.
3. Very high Abrasion Resistance.
4. Good Spalling Resistance.
5. High Refractoriness.
Refractories for Thermal Power Plants
F. High Performance Insulating Castable PASULYTE –
11HiPer :
1. Specially designed for Power Generation /
Hydrocarbon sector.
2. High thermal stability.
3. High Insulating property.
PASHEAT K
DESCRIPTION
PASHEAT ‘K’
Base Component
Cal-Diaspore
Physical Properties
Recommended Service Temp. oC ( max )
1600
Refractoriness 0C ( Min ) / Orton (min)
1683 / 31
Linear Change % in 0 C / 3hrs ( max )
 1.5
1550
Thermal Conductivity kcal/m/hr/0 C
at 400 0 CHF
at 600 0 CHF
at 800 0 CHF
Dry Density ( gm/cc ) after drying at 110 0 C
Cold Crushing Strength (kg/cm2) after drying at 110 0 C / 24 hrs.
Reversible Thermal Expansion at 1000 0 C (%)
Maximum Grain Size (mm)
0.82
0.84
0.86
2.2
350
0.58
5
Chemical Analysis
Al2O3 (%) Min
60
Fe2O3 (%) Max
<1.5
PASHEAT A
DESCRIPTION
Base Component
PASHEAT ‘A’
BTA
Physical Properties
Recommended Service Temp. oC ( max )
Refractoriness 0C ( Min ) / Orton (min)
1750
1820 / 37
Linear Change % in 1500 0 C / 3hrs ( max )
 1.0
Thermal Conductivity kcal/m/hr/0 C
at 400 0 CHF
at 600 0 CHF
at 800 0 CHF
1.12
1.20
1.28
Dry Density ( gm/cc ) after drying at 110 0C
Cold Crushing Strength (kg/cm2) at 110 0C / 24 hrs.
2.75
600
Reversible Thermal Expansion at 1000 0 C (%)
Maximum Grain Size (mm)
0.78
5
Chemical Analysis
Al2O3 (%) Min
90
Fe2O3 (%) Max
<1.0
PASHEAT 95
DESCRIPTION
Base Component
PASHEAT 95
White Tabular and White Fused Alumina
Physical Properties
Recommended Service Temp. oC ( max )
Refractoriness 0C ( Min ) / Orton (min)
1850
1900 / 40
Dry Density ( gm/cc ) after drying at 110 0 C (min)
2.90
Cold Crushing Strength (kg/cm2)
at 110 0 C
at 10000 C
700
700
PLC (%) max. after heating
at 11000 C/2hrs.
at 15500 C/3hrs.
+/-0.3
+/-0.5
Maximum Grain Size (mm)
Water of Casting
Chemical Analysis
5, 8 depending on customer’s requirement
6.0—6.5 %
Al2O3 (%) Min
95
Fe2O3 (%) Max
0.3
PAS ULCM 70TA
DESCRIPTION
Base Component
PAS ULCM 70TA
Sintered Mullite & Tabular Alumina
Physical Properties
Refractoriness oC
37
1820
Maximum Service Temperature 0C
1750
Dry Density (gm/cc) after drying at 110 0 C
2.60
Cold Crushing Strength (Kg/cm2) after drying
at 110 0 C/24 Hrs
at 800 0 C/3 Hrs
at 1100 0 C/3 Hr
500
850
1100
P. L. C % (max) after heating at 1100 0 C min
 0.2
% Water Required for Casting
4.7 – 5.3
Maximum Grain Size (mm)
0–5
Chemical Analysis
Al2O3 (%) Min
70.00
Fe2O3 (%) Max
1.2
PAS LC 70SC
DESCRIPTION
Base Component
PAS LC 70SC
Corundum with Silicon Carbide
Refractoriness oC
37
1820
Maximum Service Temperature 0C
1750
Dry Density (gm/cc) after drying at 110 0 C
2.60
Cold Crushing Strength (Kg/cm2) after drying
at 110 0 C/24 Hrs
at 800 0 C/3 Hrs
at 1100 0 C/3 Hr
750
850
1000
Modulus of Rupture (Kg/cm2), Min.
120
P. L. C % (max) after heating at 1100 0 C min
% Water Required for Casting
Maximum Grain Size (mm)
Apparent Porosity (ASTM C20)
Panel Spalling Resistance, 1650°C
 0.2
5.0 – 5.5
0–5
16% Max.
4.0 Max.
Al2O3 (%) Min
50.0
SiC (%) Min
20.0
Fe2O3 (%) Max
1.2
PASULYTE – 11 HiPer
DESCRIPTION
Base Component
Recommended Service Temp. 0C
PASULYTE – 11 HiPer
Insulating Aggregate
1275
Maximum Grain Size (mm)
6
Water Required for Casting
35 – 45 %
Thermal Conductivity (W/m-K )
At 260 0C
At 550 0C
At 820 0C
At 1100 0C
Bulk Density, gms/cc.
At 8200C
Service Temperature
0.20
0.25
0.27
0.30
1.05 max.
1.05 max.
Cold Crushing Strength (kg/cm2)
At 110 0 C/ 24 Hrs
At 8200C/ 5 Hrs.
Service Temperature/ 5 Hrs.
30 min.
30 min.
30 min.
Modulus of Rupture (kg/cm2)
At 110 0 C/ 24 Hrs
At 8200C/ 5 Hrs.
Service Temperature/ 5 Hrs.
8 min.
8 min.
10 min.
Al2O3 (%) Min
40.0
Fe2O3 (%) Max
0.9