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Refractories for lining of Blast Furnaces and its auxiliary aggregates

Magnezit Group. 2011 2

4 15 14 deposits production sites representative offices in

Russia and abroad carry out sales and service

UKRAINE

Sopot

Lubenik Koshitce

Mechernich- Satzvey Taganrog

Moscow

Saint-Petersbourg

POLAND SLOVAKIA

GERMANY

Satka

Yekaterinbourg

KAZAKHSTAN

Magnitogorsk

Orsk Pavlodar

RUSSIA

CHINA

Novokuznetsk

Razdolinsk

Leoban

Dashiqiao

Dalian

Chelyabinsk

Isin

We hold customs in high esteem. We bring the most perfect knowledge to every country where we conduct a business.

Magnezit Group in the world

UKRAINE

4 15 14 deposits production sites representative offices in

Russia and abroad carry out sales and service


Moscow Saint Petersburg Chelyabinsk Magnitogorsk Taganrog

» Razdolinsk periclase plant Fused magnesia, electrotechnical fused magnesia and metallurgical powder with MgO content more than 95%

9 thousand tons, 301 people

» Siberian Magnezit Mining of raw materials


RUSSIA

Satka production site

» Magnezit Group Shaped and unshaped magnesia products, engineering

» Коmbinat Magnezit Shaped and unshaped magnesia products, mining of raw materials

» Magnezit-Torkret-Massy Gunning masses of basic composition, mixes and mortars.

» NPK Magnezit Development of technology innovations, nozzle

fillers for steel teeming ladles, bricks of intricate shapes and dimensions

» Маgnezit Montazh Service service and maintenance of thermal units

1,233 mln tons, 8 984 people

EUROPE

» Dalmond Feuerfest Siegburg Magnesia masses and masses on the basis of Al2O3, shaped products


» Slovmag A.S. Shaped and unshaped magnesia products, mining of raw materials


Representative offices of Magnezit Group

Kazakhstan Poland Slovakia China Germany

CHINA

» Liaoning Dalmond Refractories Shaped and unshaped magnesia products,

engineering

100 thousand tons, by the year 2015 production capacity will have surpassed 200 thousand tons, 496 people

» Yingkou Dalmond Refractories Magnesia-carbon bricks for converters, electric furnaces, steel teeming


» Yingkou Xinghe Refractories Magnesia and high-alumina masses and bricks


» Wuxi Nanfang Dalmond Refractories Bricks for continuous casting of steel: protection tubes, stoppers-monoblocks, submerged nozzles, dosing nozzles


» Dalmond Maie Mining of raw materials

Yekaterinburg Novokuznetsk Nizhniy Tagil Orsk Ukraine

» Kyshtym Refractory plant Shaped and unshaped aluminosilicate products, ceramic concrete bricks


Lower Angara production site

Magnezit Group in the world


METALLURGY

Russia

» Evraz Group

» NLMK

» ММК

» Меtalloinvest

» MECHEL

» Norilsk Nickel

» ОМК

» Severstal, etc.

More than 1200 biggest companies of various industry branches are partners of the Group

CIS

» Arcelor Mittal Temirtau

» Arcelor Mittal Krivoy Rog

» Byelorussian Metallurgical Works

» Zaporozhstal

» ISD

» Metinvest

» ММК of the name of Ilyich, etc.

Europe

» Thyssen Krupp

» SIDMAR

» HKM

» Arcelor Mittal

» Salzgitter

» LME

» Saarstahl, etc.

China

» Anyang Iron and Steel

» Group Corporation

» Ji Nan, etc.

CEMENT INDUSTRY

Russia

» Eurocement

» Novoroscement

» Siberian Cement

» Mordovcement

» Enterprises of Holcem Group

» Enterprises of Heidelberg Group

» Enterprises of Lafarge Group, etc.

CIS

» Central Asia Cement

» Enterprises of United Cement Group

» Enterprises of Dyckerhoff Group

» Ivano-Frankovsk cement

» Kyzylkumcement

» Kranoselsk-building materials, etc.

Europe

» Akmenes Cementas (Lithuania)

» Dyckerhoff Deuna Zement GmbH (Germany)

» Hranice Dyckerhoff (Czech Republic)

» Kunda Nordic – Heidelberg (Estonia)

» Lafarge (Germany, Czech Republic)

» Leube (Austria), etc.

Magnezit Group extends relations and cooperation with large and famous equipment producers and refractory companies:

EKW Knöllinger Intocast Krosaki IFGL Nedmag Eirich Laise Velko STROJSTAV Maerz Ofenbau

Main partners


Sergei Odegov has been in position of General Director of Magnezit Group since 2005. From 2001 to 2005 Mr. Odegov headed representative office of the

company «Dalmond Trading International Limited» in Moscow. Dalmond is in charge of the international development of the Group and creation of sales network.

From 1989 Mr. Odegov worked in several positions at “Kombinat “Magnezit”. He graduated from Magnitogorsk Mining and Metallurgical Institute of the name of

G.I. Nosov. He studied in Moscow Institute of Economics and Management in Industry, Chelyabinsk State Unibversity, has MBA degree. He was born in 1968.

Grigori Taratukhin has been in position of Commercial Director of Magnezit Group since 2005. During the period from 1994 to 2004 he carried out

management of the representative office of the Group in Ukraine, worked at “Krivorozhstal” KGMK. He graduated form Dnepropetrovsk Metallurgical Academy.

He was born in 1964 .

Yevgeni Nenashev has been in position of Financial Director of Magnezit Group since 2007. During the period from 1998 he worked in several positions at

“Kombinat “Magnezit” including position of Deputy General director for finance and economics in which he has been working since 2003. He graduated from

Chelyabinsk Polytechnic Institute and studied also at the Academy of National Economy by the government of Russian Federation, Chelyabinsk State University

and Moscow State University. He is Candidate of Economics. He has MBA degree. He was born in 1965.

Lev Akselrod is in position of Technical Director of Magnezit Group. He has been working in the group since 2003. During the period 1974-2003 he worked

at Saint Petersburg Scientific and Research Institute of Refractories. He is author of more than 100 patents for inventions and articles, co-author of the

monograph in the field of refractories production technology and application of refractories in thermal units. He graduated from Saint Petersburg Technological

Institute. Candidate of Technical Sciences. Was born in 1950.

Management

All our employees are members of an united international team. Highly motivated, competent and creative team of Magnezit Group is headed by recognized professionals with considerable experience of work in the industry.


Magnezit Group offers and supplies refractories in complex for Blast

Furnaces and its auxiliary aggregates lining.

Refractories for Blast Furnaces

7

Magnezit Group offers and supplies refractories in complex for Blast Furnaces lining.

Application of high quality refractories in the area of hearth bottom, blast-furnace hearth, tuyere ring, belly, blast furnace shaft allows to increase lifetime of blast furnace lining up to 15-20 years without performance of II class capital repair.

We offer only high quality materials, which provide safety operation and long life of blast furnace.

We offer different variants of blast-furnace hearth and blast-furnace hearth bottom lining.

We are ready to codesign blast furnace lining projects.

Here is a reference list of some our Customers: EMZ (blast furnace of 1513 m3 in volume) DMKD (blast furnace of 1513 m3 in volume) ZSMK (blast furnace of 3000 m3 in volume) CherMK (blast furnace of 5080 m3 in volume) Uralskaya Stal (blast furnace of 1600 m3 in volume) Tulachermet (blast furnace of 1030 m3 in volume) U.S. Steel Kosice (blast furnace of 1360 m3 in volume) Bao Steel (blast furnace of 2500 m3 in volume)

Magnezit Group. 2011

Refractories for Blast Furnaces

8

Blast Furnace production development consists of blast furnace volume increase, severe operation conditions of blast furnaces: high air-blast temperature, high production rate. In such operation conditions blast furnace hearth lining and blast furnace hearth bottom lining define lifetime and operating efficiency of blast furnaces.

Carbonaceous materials for blast furnace hearth and hearth bottom lining

DALCARB 95G graphitized blocks

DALCARB 80SG semi-graphitized blocks

DALCARB 80F microporous blocks

» Products are manufactured according to Customer’s drawings.

» Every block layer passes a fit-up.

» Every layer is checked by Customer’s representatives at manufacturer site.


Refractories for Blast Furnace hearth and hearth bottom

9

Index

» Description

Carbonaceous products for blast furnace hearth and hearth bottom

» С, >

» Apparent density, >

» Open porosity, <

» Compression strength, >

» Bending strength, >

» Alkali resistance

» Cast iron corrosion coefficient, <

» Gas permeability, <

» Oxidation rate, <

» Pore mean diameter, <

» Thermal conductivity at 300С, >

Unit

» %

» g/cm3

» %

» MPa

» MPa

» class

» %

» mDarsi

» %

» m

» W/(m×K)

DALCARB 95G

» 98

» 1,55

» 25

» 25

» 6

» U or LC

» 40

» 100

» 25

» -

» 80

» graphitized blocks

DALCARB 80SG

» 80

» 1,55

» 16

» 35

» 9

» U

» 30

» 12

» 10

» 1,25

» 14

» semi-graphitized blocks

DALCARB 80F

» 79-83

» 1,6

» 15

» 40

» 14

» U

» 30

» 10

» 10

» 0,5

» 15

» microporous blocks


10

Index

» Apparent porosity, <

Refractories for ceramic nozzle



» Refractoriness, >

» Linear variation (1500С×3h)

» Heat resistance, (1100С-water) >

» Initial melting temperature at

0,2MPa, >

» Al2O3, >

» SiC, >

» Thermal conductivity, >

Unit

» g/cm3

» MPa

» С

» %

» cycles

» С

» W/(m×K)

» %

» %

» %

ACB-801SBF

» 3,05

» 100

» 1790

» 0±0,5

» 30

» 1700

» 5

» 80

» 9,0

» 1,0

» 16

» Fe2O3, <

» %

It is necessary to use high thermal conductivity refractories for blast furnace hearth lining. This allows to decrease maximum temperature gradient of the wall. This material has to provide protection layer reacting with cast iron. Isoline (cast iron solidification point 1150°С) is limited in the range of protection layer. Along with it is necessary to use products having maximum pore quantity less than 1 µm.

Thus we offer to use ACB-801SBF SiC-aluminate products for ceramic nozzle lining. These products have high ultimate compression strength (more than 100 MPa), and high thermal shock resistance (more than 30 cycles). In the range of 800-1150°С isotherm level is in ceramic nozzle. In ACB-801SBF grade products metallic composite bond is used. During production process of these refractories microstructural mullite figure-of-needle is formed. This provides comprehensive strength and minor porosity to the products if to compare with products having uniform plastic phase.

These products have the following advantages: heat resistance and strength increase as a result of mechanical, chemical and thermal stress absorption.


11

Carbon-bearing combined refractories for ceramic nozzle

If to join advantages of carbonaceous products and conventional ceramic nozzle it is possible to reach high thermal conductivity, high compression strength (more than 70 MPa), low gas permeability, cast iron erosion resistance and refractoriness, and also to solve a problem of carbonaceous products oxidation. This allows to widen refractories range for blast furnace lining and to increase lining lifetime, to decrease refractories consumption.

The best prospect direction in development of new refractories was carbon insertion into ceramic nozzle combined products based on ceramic nozzle and carbonaceous products application practice. This allows to attach microporous structure to ceramic nozzle products. Thus ceramic nozzle and carbonaceous product advantages were kept without quality decrease.


12

Combined carbon-bearing products for blast furnace hearth and hearth bottom lining

Modification and innovations

» Combined carbon-bearing products are new refractories which were used for lining of blast furnace hearth, tuyere area, hot-metal taphole, slag taphole (cinder notch) and other areas of blast furnace. These refractories have advantages if to compare with carbonaceous and corundum products.

Research works

» Combined carbon-bearing products were developed together with Wuhan Polytechnic Refractory University in Hǎinán province and technical support of Fifth Refractory Plant in Goñi. As a result of their cooperation refractories commercial production was established. Production figures were higher than production figures of the analogue products of other leading manufacturers.

Product quality improvement

» Based on application practice of “ceramic nozzle” and carbonaceous products when developing new refractories the most perspective direction is carbon insert in combined products of “ceramic nozzle”, that allows to form microporous structure inside the products. Thus to keep advantages of carbonaceous and high-aluminous products without its selected benefits.

Technological difficulties

» During manufacturing of these products technological difficulties were arisen: » big difference in carbon and corundum density, and moisture difference of two materials created difficulties in uniform mixing; » carbonaceous material (graphite) addition leads to low forming and creates “lamination” in refractories structure; » carbonaceous material oxidation occurs at high temperatures; » incoherence between carbon and oxides leads to low refractories strength.


13

Carbon-bearing combined products for ceramic nozzle

Combined carbon-bearing products have high thermal conductivity, at 300C thermal conductivity

coefficient reaches 15W/m·K, perfect alkali resistance (U class), high compression strength, good wear

resistance, cast iron erosion resistance (heat coefficient <1,5%), low gas permeability (pore volume <1μm

reaches 75%, pore mean diameter <0,5 μm).

Thermal conductivity of combined carbon-bearing products is higher than thermal conductivity of

conventional high-aluminous products. This allows to shift isotherm 1100℃ to the blast furnace hearth

bottom surface and to create protection lining layer (wall accretion). In comparison with conventional

refractories combined carbon-bearing products resistance will increase blast furnace hearth life not less

than five years more.

Combined carbon-bearing products densifying.

Metallic Si is contained in combined carbon-bearing products. It reacts with carbon during firing and

operation processes.

Si + C = β - SiC (1)

Reaction (1) forms β-SiC fibrous crystal which rams pores of combined carbon-bearing products and

leads to pore reduction percent and pore diameter reduction >1μm that allows to increase gas

impermeability and combined carbon-bearing products strength.


14

Self-regeneration theory of combined carbon-bearing products

Combined carbon-bearing products have self-regeneration function during operation

thus forming additional protection layer.

Combined carbon-bearing products have SiC,

SiC(solid) + CO(gaseous) = SiO(gaseous) + 2C(solid) (2)

Formed SiO(gaseous) spreads on the lining surface and reacts with CO(gaseous):

SiO(gaseous) + СО(gaseous) = SiO2(solid)+ C(solid) (3)

Reaction (3) leads to sealing of combined carbon-bearing products С(solid), SiO2(solid)

reacts with fine corundum powder and slag forming high adhesive silicate layer on the

surface of combined carbon-bearing products. This protection layer prevents alkali

penetration, carbon oxidation inside products, reduces gas permeability. It allows to

increase lining lifetime of combined carbon-bearing products at blast furnace hearth and

hearth bottom. Linear variation of combined carbon-bearing products at 1450С×2 h is

+0,03%, that allows to avoid lining growth and blast furnace shell breakup as a result.


15

Structure of combined carbon-bearing products

Residual metallic Si in combined carbon-bearing products forms β—SiC fibrous crystal during operation. This β—SiC fibrous crystal grows and decreases the coefficient and pore diameter. Pores filling with β—SiC crystals allows to create dense structure preventing cast iron and slag penetration, and also protects from chemical erosion of main metal and from carbon oxidation.

Black spots are pores (200 times) Pores are locked by formed β-SiC crystals after firing (8000 times)

XRD photo of finished combined carbon-bearing products


16

Layout of new blast furnace hearth and hearth bottom construction

We offer to examine blast furnace hearth lining made according to new layout in comparison to ordinary linings made earlier. Laying of small-pieces graphitized carbonaceous products is performed tightly to blast furnace stave (cooling bed) in order to transmit heat from combined carbon-bearing products to blast furnace stave well-timed. To seal gaps between graphitized products and carbonaceous blocks with carbonaceous filling mix. Considering that carbonaceous filling mix moves inside the blast furnace, it allows to gather maximum strength and reach planned thermal conductivity figures. Modification of blast furnace hearth construction increased hearth wall thermal conductivity effect. And isotherm 1100С moves inside the blast furnace, that creates good conditions for wall accretion forming on the surface of blast furnace lining. This construction allows to protect refractories from hot-metal and slag penetration, to prevent oxidation on the surface of combined carbon-bearing products that significantly increases lifetime of blast furnace hearth and hearth bottom.

Graphitized carbonaceous products

High thermal conductive filling mix

Semi-graphitized carbonaceous products

Microporous carbonaceous products

Combined carbonaceous products

Monolithic taphole


17

Index


Refractories for blast furnace taphole



» Bending strength, >




» Al2O3, >

» SiC, >


Unit

» g/cm3

» MPa

» MPa

» %

» cycles

» class

» W/(m×K)

» %

» %

» %

DALCAR

ACB65SBF

» 2,80

» 45

» 12

» -0.5~+0,5

» 30

» U or LC

» 10

» 65

» 15

» 12

» 16

» С, >

» %

It is possible to use large-block combined refractories made from SiC-carbon-aluminate of DALCAR ACB65SBF grade for taphole area lining. These products are manufactured based on high quality corundum with addition of SiC 15% and C 12%. Those products have high thermal conductivity (not less than 10 W/(m*K)), abrasion resistance, chemical impurity attack resistance and heat resistance (not less than 30 cycles). Oxidation stability not more than 90%. Metallic Si is added during manufacturing process of these blocks that protects graphite inside the blocks from oxidation. SiC addition increases hot-metal erosion resistance. Besides, block surface which is in contact with hot-metal oxidizes and protects carbon inside the blocks from oxidizing in the oxidizing atmosphere.

» % » 1,5 » Fe, <


18

Index


Refractories for blast furnace tuyere area



» Initial melting temperature at

0,2MPa, >



» Al2O3, >

» SiC, >


Unit

» g/cm3

» MPa

» С

» %

» cycles

» W/(m×K)

» %

» %

» %

DALAL N-12

» 2,9

» 100

» 1660

» 0~+0,2

» 20

» 2

» 78

» 12

» 1.0

» 16

» Fe2O3, >

» % Local temperature reaches 1700°С and higher in the tuyere area. It is required to use materials having high thermal shock resistance, high initial melting temperature, good erosion and oxidation resistance.

Therefore we offer to apply SiC-aluminate products of DALAL N-12 grade. These products have high ultimate compression strength (more than 100 MPa), and high thermal shock resistance (more than 20 cycles).

It is possible to manufacture. Tuyere area lining from small-pieces products and large-blocks.

Tuyere area products are tested to fit-up and products take-over is performed by Customer’s representatives.


19

Index

» Open porosity, <

Refractories for blast furnace bosh and belly



» SiC+SiC3N4, >

» SiC, >


Unit

» g/cm3

» MPa

» W/(m×K)

» %

» %

DALSIC 70NS

» 2,67

» 150

» 45

» 20

» 94

» 72

» 16 » %

This area is the most wear one. Thus it is preferred to use SiC products of DALSIC 70NS grade with silicium nitride bond. These products have high compression strength (150 MPa) and bending strength (45 MPa).

» Bending strength, > » MPa

» SiC3N4, >

» Fe2O3, <

» %

» %

» 21

» 0,7


20

Index

Blast furnace shaft lining

» С, >


» Porosity, <


» Initial melting temperature

» Gas permeability, <

» Pore volume in diameter <1m

» Pore mean diameter, <


Unit

» %

» g/cm3

» %

» MPa

» С

» mDarsi

» %

» m

» W/(m×K)

Fired carbon-aluminate bricks

» 11

» 2,8

» 16

» 70

» 1650

» 0,5

» 70

» 0,5

» 12

Chamotte bricks phosphate

impregnated

» P2O5 7%

» 2,3

» 12

» 60

» 1450

» -

» 10

» -

» Refractoriness

1750С

» Al2O3, > » % » 65 » 42

Fired carbon-aluminate bricks are used for middle part of blast furnace shaft

lining. Chamotte bricks phosphate impregnated with low gas permeability, low

porosity, high strength and high wear resistance are used for upper part of blast

furnace shaft lining.


21

Index

Blast furnace shaft lining

» Al2O3, >

» Fe2O3, <

» Refractoriness

» Density, >


» Open porosity, <


» Linear varying (1500С×3h)

Unit

» %

» %

» С

» g/cm3

» %

» %

» MPa

» %

DALSIAL 403BF

» 42

» 1,8

» 1750

» 2,3

» 15

» 14

» 60

» 0~ -0,2

» P2O5, > » % » 7

Chamotte blocks of DALSIAL

403BF grade impregnated with

phosphoric acid are used for those

areas. These blocks have good

abrasive resistance and alkali

resistance. In Chinese practice

application of these blocks increases

blast furnace lifetime up to 10 years

and more without repair works.


22

Refractories for cast yard

Magnezit Group offers and supplies refractories for blast furnace trough lining (main trough, hot-metal conveying trough, slag conveying trough, rocking trough).

When all recommendations are followed guaranteed life of trough lining can be:

main troughs (before capital repair) more than 3 millions tons of cast iron for

working lining of main troughs (with intermediate repairs)

more than 200 thousands tons of cast iron for working lining of conveying troughs (with intermediate repairs)

more than 250 thousands tons of cast iron for working lining of trough covers (more than 12 months)

Specific consumption of mixes for main trough is from 0.16 to 0.25 kg of refractories per ton of cast iron

Customer’s reference list for cast yard mixes

Russia: ZSMK (0,2 kg/t of cast iron » Ukraine: DMKD (0,22 kg/t of cast iron) » China: Baosteel (0,19 kg/t of cast iron), » China: Ansteel (0,18 kg/t of cast iron), » China: Sinuy Steel (0,16 kg/t of cast iron), » China: Ninbo Steel (0,18 kg/t of cast iron), » Japan: JFI (0,17 kg/t of cast iron)


23

Filling mixes for main troughs

Taking into consideration experience of our specialists, we offer to perform main trough

lining of cast yards dividing it into areas: “hot-metal area” and “slag area”. This allows to

increase volume of hot-metal casting and reduces refractories consumption. DALCAST ASK

76-10 filling mix is used for cast iron area lining of the main trough. DALCAST ASK 50-7

filling mix is used for slag area lining of the main trough. There is a possibility to use

DALSICAST BTL5 filling mix for main trough lining without division it into “hot-metal area”

and “slag area” if Customer is interested in this. It is possible to make safety lining of main

troughs from DALCAST A702 filling mix.

DALCAST A702

DALCAST ASK 50-7

DALCAST ASK 76-10

DALCAST A702

DALSICAST BTL5


24

Index

» Description

Filling mixes for main troughs

» Al2O3, >

» SiC, >

» Apparent density

at 110С×24h, >

at 1450С×3h, >

» Linear variation at 1450С×3h, >

» Ultimate bending strength

» Ultimate compression strength

Unit

» %

» %

» g/cm3

» g/cm3

» %

» MPa

» MPa

DALSICAST

BTL5

» 78,0

» 18-22

» 2,78

» 2,76

» +0,04

» 5,9

» 10,3

» Main trough without

division into hot-metal

area and slag area

at 110С×24h, >

at 1450С×3h, >

at 110С×24h, >

at 1450С×3h, >

» Open porosity

at 110С×24h, <

at 1450С×3h, <

» Quantity of added water

» MPa

» MPa

» %

» %

» %

» 30

» 45

» 15,9

» 19,6

» 6

DALCAST ASK

76-10

» 76,0

» 17,0

» 2,80

» 2,77

» +0,03

» 6,7

» 12,4

» Main trough, hot-

metal area

» 30

» 45

» 15,1

» 18,9

» 5,5-6

DALCAST ASK

50-7

» 48,0

» 40,0

» 2,68

» 2,66

» +0,07

» 4,3

» 11,6

» Main trough, slag

area

» 25

» 35

» 15,9

» 19,6

» 5,5-6

DALCAST A702

» Al2O3+MgO

70,0

» 2,60

» -

» ±0.5

» -

» -

» Main trough,

safety lining

» 20

» -

» -

» -

» -


25

Index

» Description

Filling mixes for conveying troughs

» Al2O3, >

» SiC, >

» Apparent density

at 110С×24h, >

at 1450С×3h, >




Unit

» %

» %

» g/cm3

» g/cm3

» %

» MPa

» MPa

DALCAST ASK

55-12

» 57,0

» 28

» 2,71

» 2,67

» +0,08

» 3,9

» 8,6

» Slag conveying

trough

at 110С×24h, >

at 1450С×3h, >

at 110С×24h, >

at 1450С×3h, >

» Open porosity

at 110С×24h, <

at 1450С×3h, <

» MPa

» MPa

» %

» %

» 20

» 30

» 16,8

» 20,3

DALCAST ASK

70-9

» 78,0

» 15,0

» 2,78

» 2,76

» +0,04

» 5,9

» 10,3

» Hot-metal

conveying trough

» 35

» 52

» 15,9

» 19,6

- DALCAST ASK 70-9 mix is used for working lining of hot-metal conveying trough - DALCAST ASK 55-12 mix is used for working lining of slag conveying trough - DALCAST ASK 70-9 filling mix is used for working lining of residual hot-metal trough

DALCAST ASK 70-9

DALCAST ASK 55-12


26

Index

» Description

Filling mixes for rocking troughs

» Al2O3, >

» SiC, >

» Apparent density

at 110С×24h, >

at 1450С×3h, >




Unit

» %

» %

» g/cm3

» g/cm3

» %

» MPa

» MPa

DALCAST ASK

55-12

» 57,0

» 28

» 2,71

» 2,67

» +0,08

» 3,9

» 8,6

» Slag conveying

trough

at 110С×24h, >

at 1450С×3h, >

at 110С×24h, >

at 1450С×3h, >

» Open porosity

at 110С×24h, <

at 1450С×3h, <

» MPa

» MPa

» %

» %

» 20

» 30

» 16,8

» 20,3

DALSICAST

BTL6

» 78,0

» 15,0

» 2,78

» 2,76

» +0,04

» 5,9

» 10,3

» Hot-metal

conveying trough

» 25

» 40

» 15,9

» 19,6

- DALSICAST BTL6 filling mix is used for hot-metal rocking trough. - DALCAST ASK 55-12 filling mix is used for slag rocking trough.

DALSICAST BTL6

DALCAST ASK 55-12


27

Index

» Description

Filling mixes for trough covers

» Al2O3, >

» SiC, >

» Apparent density

at 110С×24h, >

at 1450С×3h, >




Unit

» %

» %

» g/cm3

» g/cm3

» %

» MPa

» MPa

CT-ACB6010

» 60,0

» 10,0

» 2,60

» -

» ±0,5

» 3,0

» 8,0

» Main trough covers

at 110С×24h, >

at 1450С×3h, >

at 110С×24h, >

at 1450С×3h, >


» MPa

» MPa

» %

» 35

» 50

» 6,5-7,0

DALCAST A60

» 60,0

» -

» 2,50

» 2,45

» ±0,8

» 5,5

» 10,0

» Conveying trough

covers

» 30

» 50

» 6,5-7,0

CT-ACB6010 filling mix is used for main trough cover lining. DALCAST A60 filling mix is used for lining of hot-metal conveying trough cover, slag conveying trough cover, rocking trough cover, residual hot-metal trough cover.


28

Index

» Description

Refractories for trough repairs

» Al2O3, >

» SiC, >

» Apparent density

at 110С×24h, >

at 1450С×3h, >




Unit

» %

» %

» g/cm3

» g/cm3

» %

» MPa

» MPa

DALGUN

ACB65-20

» 65,0

» 20,0

» 2,57

» 2,55

» +0,1

» 3,5

» 8,6

» Repair gunning mixture

at 110С×24h, >

at 1450С×3h, >

at 110С×24h, >

at 1450С×3h, >


» MPa

» MPa

» %

» 25

» 40

» 6-6,5

DALREP

ACB65-22

» 68,0

» 15,0

» 2,6

» -

» -

» 2,0

» -

» Self-spreading repair mix

» 20

» -

» 6,5

DALREP ACB65-22 self-spreading repair mix and DALGUN ACB65-20 gunning mixture are used for hot repair of troughs.


29

Index

» Description

Taphole mixes

» Al2O3, >

» SiO2, <

» Apparent density

» Volatile components, <


Unit

» %

» %

» g/cm3

» %

DALTAM S40

» 28,0

» 40,0

» 2,25

» 20

» For blast furnaces in

volume 2000m3

» Hardening time

» mm

» С

» min

» 0-3

» 1650

» 10

TM-AS50

» 30,0

» 40,0

» 2,3

» 20

» For blast furnaces in

volume 3000m3

» 0-3

» 1650

» 10-15

Offered taphole mixes have high operation properties and service reliability. These mixes have unique properties necessary for specific service conditions. These properties are: high abrasive and chemical resistance at higher temperatures, and also required heat resistance, significant advantage is high rate of solidification, easiness in taphole opening.

» С, > » % » 10,0 » 15,0

» SiC, > » % » 10,0 » 15,0

» Fe2O3+TiO2, < » % » 2,0 » 15,0

» % » 14,0 » 14,0

» Loss on ignition, <

» MPa » 6,0 » 7,0

» Granulometric composition

» Application temperature


30

Refractories for hot-blast stove

» We offer only high quality materials for refractory lining , which provide safety operation and long life of hot-blast stove.

» Complex entities of hot-blast stove lining areas (forehearth, hot blast connector, bell connector and etc.) will be preliminary assembled to fit-up at Manufacturer’s production site, at the presence of Customer’s representatives. All products will be hand over after document signing.

» We manufacture products according to Customer’s drawings.

» We offer different variants of hot-blast stove lining.

» We are ready for project co-design.


31


» Heat resistant refractories based on andalusite and bauxite are used for forehearth lining. This material was developed specially for ceramic burners with cycling operation.

» Siliceous refractory materials with low Creep coefficient are used for bell working area lining.

» Siliceous refractory materials with low Creep coefficient are used for checker chamber high temperature area lining.

» Chamotte refractory materials with low Creep coefficient are used for checker chamber mean and low temperature areas lining.

» Shaped refractories are offered for lining of burning agent feeding nozzles, collector arches and forehearth lining joints with burning agents connectors.

» High-aluminous and siliceous refractory materials with low Creep coefficient are used for burning chamber lining.


32

Heat resistant refractories

Index

» Al2O3, >

» Permanent linear shrinkage during

2 h heating at 1450С

» Initial deformation temperature

under load of 0,2 MPa

» Open porosity


» Heat resistance (heating 1100С)

water thermal changes

Unit

» %

» %

» С

» %

» MPa

DALAL WR-C

» 55

» 1750

» 0,4

» 1400

» 24

» 45

» 50

DALAL WR-D

» 55

» 1790

» 0,4

» 1400

» 24

» 45

» 100

» 2,35 » 2,35

» Application » Working surface of

ceramic burner,

collector bell and walls

» Burning agents feeding

nozzles of ceramic

burner collectors

» 55

» 1790

» 0,4

» 1400

» 24

» 45

» 150

» 2,35

» Straight part of

collector bell at the

forehearth out

DALAL BM-A

» Apparent density, > » g/cm3

» Refractoriness » С

» Thermal

changes


33

Index


Unit

%

%

MPa

С

%

%

С

DALSIL DN951

+0,4

23

1710

2,37

-

95

Siliceous refractories for walls and bell

1650

+0,4

22

1710

2,37

-

95

1650

+0,4

20

1750

2,25

42

-

1520

+0,2

24

1730

2,25

40

-

1350

-0,8

21

1790

2,65

75

-

1620

DALSIL DN952

DALSIAL 42BF

DALSIAL 37BF

DALSIAL 72BF

» Al2O3, >

» Permanent linear shrinkage

during 2 h heating at 1450С

» Initial deformation temperature

under load of 0,2 MPa

» Open porosity


» Creep coefficient (deformation

under load 0,2 MPa at 1500С

during 50h)

» Application

» Apparent density

» Refractoriness

» SiO2, >

g/cm3

% 0,8

30

0,8

35

0,8

50

0,8

40

0,8

60

Siliceous checker bricks

Chamotte checker bricks for walls

Chamotte bricks for wall and checker

bricks

Products for hot-blast connectors lining


34

After-sales service of heating aggregates in complex

» To undertake auxiliary functions and increase your business time necessary for main business management.

» To become your partners and make long-term, and mutually beneficial relations.

» We are ready for cooperative strategic management of specific undertaken function development that was provided for after-sales service. This strategy will follow general development concepts of your Company and correspond to your business goals.

» After-sales service of heating aggregates lining - it’s a service complex providing trouble-free operational cycling of aggregate lining during coordinated time between re-lining , on conditions that aggregate is operated in agreed mode regarding to operational parameters, and performing repair bill optimization.

» Concluding an agreement on heating aggregates undertaking for after-sales service in complex Customer gets the following benefits:

passes management of secondary facility to the external contractor, while getting a possibility to concentrate everything on the main business;

reduces stock resources and, consequently, releases a part of circulating assets;

stabilizes (in most cases - decreases) cost per refractories and its usage;

reduces staff costs which is busy with operations on packaging arrangement, assembling, maintenance and relining.


Thank you for your attention!

119180, Russia, Moscow, Bolshaya Polyanka St., 43, building 3 Phone: +7 (495) 232-61-00 Fax: +7 (495) 232-61-10 www.magnezit.ru 654000, Russia, Novokuznetsk, Ordzhonikidze St., 35, office 1309 Phone: +7 (3843) 46-14-83 Fax: +7 (3843) 45-35-92 E-mail: [email protected]

refractories for lining of blast furnaces and its...

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