Refratechnik Steel GmbH specializes in high-performance lining solutions for blast furnace stacks, focusing on installation time and material selection. The company offers a variety of products, including cement-bonded and cement-free jetcasting materials, to meet the modern demands of blast furnace operations with minimal costs and maximum quality. With over 60 years of experience, Refratechnik is committed to providing optimal customer service worldwide.

1. REFRATECHNIK
Lining concepts
for blast furnace stacks
Ihr Ziel ist unser Antrieb.
Results first.

2. 22©Refratechnik Steel GmbH
High-performance products
and intelligent lining concepts
When repairing or re-lining fur-
nace stacks, installation time and
the selection of suitable material
are decisive criteria for construc-
tion site planning. Qualified
consultation by our experienced
employees enables the customer
to find the best solution for the
respective lining requirements
from the wide range of material
groups. Hereby, the customer's
needs and the task on hand are
always the central issues: Mini-
mum costs, minimum time, and
maximum quality regarding input
of labour and product.
Refratechnik Steel provides prod-
ucts for casted, gunned, rammed,
and shotcreted linings – with and
without cement – for backfilling
and for wear linings.
For example, in terms of timesav-
ing, Refratechnik's Jetcast lining
technique for the stack walls rep-
resents an important alternative
to conventional refractory linings.
Moreover, the physical properties
of low-cement jetcasting mate-
rials are very similar to those of
low-cement castables, and there-
fore guarantee highest refractory
quality.
In combination with effective
equipment and experienced instal-
lation teams, the high standard of
Refratechnik linings meets all the
demand of modern blast furnace
operations. Refratechnik offers the
hydraulically bonded low-cement
version as well as the cement-free
nanobond alternative. Jetcasting
ensures fast lining operations
with minimum loss of material.
Our experience has shown that
rebound losses with a gunning
robot are less than 2%, and even
less than 1% with manual lining.
Modern jetcasting products
feature very low porosities, and
therefore high resistance against
mechanical and chemical attack.
Hereby, the costs are absolutely
comparable with those of conven-
tional methods.
Refratechnik is the only compa-
ny worldwide that offers both
cement-bonded and cement-free
jetcasting products as well as con-
ventional dry gunning materials:
fast problem solving for hot or cold
repairs, for manual or automated
lining operations, in hot or cold
weather, for new linings or interim
repairs, with or without working
scaffolds. Refratechnik has the
products, the capacities, and
the logistics to provide optimum
customer service at any time and
anywhere in the world.

3. 33©Refratechnik Steel GmbH
Blast furnace head
REFRAJET® F-55 R
Throat armour
REFRAJET® F-55 R
REFRASELFCAST® Nanobond F-50 R fine
REFRASELFCAST® LC F-60 AR/R
REFRASELFCAST® MC F-68 R fine
Backfill
REFRASELFCAST® Nanobond F-50 R superfine
REFRASELFCAST® LC S-60 R fine
Upper stack wall
REFRAJETCAST® LC F-60 R
REFRAJETCAST® Nanobond F-60 R
REFRAJET MC F-58 R
Joint filler
REFRARAM® B-70 S-15
REFRAJET® Claybond B-70
Lower stack wall / bosh / belly
REFRAJETCAST® LC F-60 AR/R
REFRAJETCAST® Nanobond F-60 AR/R
REFRAJET MC F-58 AR/R
Burden cap
REFRAJET® BC
Tuyere, elbows, compensators
REFRACAST® MW 1460
REFRACAST® F-50 C
Hearth
REFRARAM® B-70 S-15
REFRASELFCAST® LC S-75 R fine
REFRACAST® LC S-85 R
REFRAJETCAST® Nanobond F-60 S-15 AR/R
Bottom
REFRACAST® MC F-20
REFRASELFCAST® LC F-50 R fine

4. 44©Refratechnik Steel GmbH
Quality Installation
method
Al2O3
%
SiO2
%
Fe2O3
%
CaO
%
Max.
temp.
°C
Bulk
­density
g/cm3
Cold crushing
strength
1000 °C
N/mm2
Blast furnace head
REFRAJET® F-55 R gunning > 55.0 < 35.0 < 0.9 < 8.2 1450 2.05 50.0
Throat armour
REFRAJET® F-55 R gunning > 55.0 < 35.0 < 0.9 < 8.2 1450 2.05 50.0
REFRASELFCAST®
Nanobond F-50 R fine
self-flowing > 50.0 < 46.0 < 0.7 < 0.2 1500 2.37 100.0
REFRASELFCAST® LC F-60 AR/R self-flowing > 50.0 < 35.0 < 0.9 < 2.5 1550 2.30 90.0
REFRASELFCAST® MC F-68 R fine self-flowing > 66.0 < 29.0 < 0.9 < 2.9 1640 2.40 90.0
Backfill
REFRASELFCAST®
Nanobond F-50 R superfine
self-flowing > 50.0 < 46.0 < 0.8 < 0.15 1400 2.30 75.0
REFRASELFCAST® LC S-60 R fine self-flowing > 31.0 < 5.0 < 0.4 < 4.0 1500 2.55 75.0
Upper stack wall
REFRAJETCAST® LC F-60 R shotcreting > 52.0 < 35.0 < 0.9 < 2.0 1650 2.40 115.0
REFRAJETCAST® Nanobond F-60 R shotcreting > 52.0 < 38.0 < 0.9 1650 2.40 85.0
REFRAJET MC F-58 R gunning > 45.0 < 37.0 < 0.9 < 4.5 1500 2.25 80.0
Joint filler
REFRARAM® B-70 S-15 ramming > 66.0 < 9.0 < 0.6 1650 2.75 40.0
REFRAJET® Claybond B-70 gunning > 67.0 < 29.0 < 1.4 < 1.0 1650 2.20 10.0
Lower stack wall / bosh / belly
REFRAJETCAST® LC F-60 AR/R shotcreting > 60.0 < 35.0 < 1.1 < 2.2 1650 2.40 95.0
REFRAJETCAST® Nanobond F-60 AR/R shotcreting > 56.0 < 40.0 < 0.9 1650 2.40 90.0
REFRAJET MC F-58 AR/R gunning > 56.0 < 32.0 < 0.9 < 4.5 1500 2.35 85.0
Burden cap
REFRAJET® BC gunning > 23.0 < 65.0 < 6.0 < 6.0 1200 1.10 6.0
Tuyere, elbows, compensators
REFRACAST® MW 1460 casting/vibrating > 55.0 < 39.0 < 3.0 < 3.0 1450 1.85 50.0
REFRACAST® F-50 C casting/vibrating > 51.0 < 38.0 < 1.3 < 7.0 1500 2.15 25.0
Hearth
REFRARAM® B -70 S-15 ramming > 66.0 < 9.0 < 0.6 1650 2.75 40.0
REFRASELFCAST® LC S-75 R fine self-flowing > 15.0 < 6.0 < 0.3 < 2.9 1500 2.55 70.0
REFRACAST® LC S-85 R vibrating > 5.0 < 8.0 < 0.3 < 2.5 1550 2.60 130.0
REFRAJETCAST®
Nanobond F-60 S-15 AR/R
shotcreting > 50.0 < 35.0 < 0.9 > 13.0 1650 2.40 60.0
Bottom
REFRACAST® MC F-20 vibrating > 18.0 < 49.0 < 14.0 < 16.0 1000 2.40 70.0
REFRASELFCAST® LC F-50 R fine self-flowing > 55.0 < 38.0 < 0.8 < 2.4 1650 2.30 90.0
Unshaped products
Typical values

5. 55©Refratechnik Steel GmbH
Refratechnik Steel GmbH is a
member of the Refratechnik Group.
Based on a solid foundation of
more than 60 years ­experience,
Refratechnik Steel GmbH
focusses on solutions for the
iron & steel industries as well
as the ­non-ferrous and aluminium
industries, which consequently
involves ­environmental, energy,
and ­chemical aspects.
The production facilities of
Refratechnik Steel GmbH are
The Refratechnik Group is certified according to:
ISO 9001 – Quality management systems, and
ISO 14001 – Environmental management systems.
located in Bendorf and Dülmen,
Germany. Furthermore production
capacities of the group facilities
in Germany, Spain and China have
been assigned. Administration and
R+D are in Düsseldorf and Bendorf.
Let´s talk about your goals.
We will find the right way.

6. Refratechnik Steel GmbH
Schiessstrasse 58
40549 Düsseldorf
Germany
Phone +49 211 58580
Fax +49 211 585849
steel@refra.com
www.refra.com
St1-035-5/2012St1-035-5/2012