Negotiable
The date of payment from buyers deliver within days
Shandong
Long-term effective
2022-05-15 02:17
419
Company Profile
By certification [File Integrity]
Contact：longkete(Mr.)
Email：
Telephone：
Phone：
Area：Shandong
Address：Shandong
Website：http://www.lktrefractories.com/ http://longkete.bofadianqi.com/
Alumina bricks generally refer to Alumina silicate bricks, with Al2O3 and SiO2 contents as main contents, and Fe2O3, Na2O, K2O, TiO2 as impurities.
With different Al2O3 contents, alumina bricks include fire clay bricks(Al2O3 content within 48% with Kaolin as raw material), high alumina bricks (Al2O3 content 48%-85%, with bauxite as raw material), dense mullite bricks, silimanite bricks, corundum bricks(Al2O3 content over 90% with corundum as raw materials) etc.
Technical data of alumina bricks generally include chemical composition(content of Al2O3 and Fe2O3), bulk density, apparent porosity, cold crushing strength, permanent liner change and refractoriness under load 0.2 MPa.
With higher Al2O3 content, bricks are with
Less impurities
better thermal resistance
Higher crushing strength
Better corrosion resistance
Less permanent liner change
More stable performance
But thermal shock resistance of corumdum bricks are weaker than high alumina bricks and mullite bricks, so bricks with higher Al2O3 content are generally used as working lining of furnaces, kilns and boiler with stable temperature.
Producing process: Grinding of raw material--Batching-- Shaping with hydraulic press-- firing in tunnel kilns--- inspection and packaging in warehouse
LONGKETER supplying a comprehensive range of CLAY FIREBRICKS.Alumina content in approximate 28-45% are classified to CLAY FIREBRICKS
Key Features for CLAY FIREBRICKS
● Good thermal shock and spa lling resistance
● Good resistance to abrasion and corrosion
● Good volume stability at high temperature
● High mechanical strength
The main application for CLAY FIREBRICKS are listed below :
● Furnace construction
● Blast furnace∕Hot blast stove
● Steel foundries
● Furnace in the nonferrous metal industry
● Coke oven and Gas furnace
● Glass industry
● Cement industry
● Safety lining of ladle
● Backup lining of boiler
CLAY FIREBRICKS Product Data
Material |
Common |
Special |
|||||||||
Blast furnace |
Hot blast stove |
Glass Furnace |
|||||||||
Item |
SK32 |
SK34 |
ZGN-42 |
GN-42 |
RN-42 |
RN-40 |
RN-36 |
BN-40a |
BN-40b |
||
Pyrometric Cone Equivalent Orton cone |
31-32 |
33-34 |
– |
– |
– |
– |
– |
– |
– |
||
Refractoriness (℃) |
1715 |
1760 |
176 |
176 |
176 |
174 |
170 |
– |
– |
||
Bulk Density (kg/m3) |
2100-2200 |
2200-2250 |
2200 |
2200 |
2200 |
2200 |
2150 |
2250 |
2250 |
||
Apparent Porosity (%) |
22-24 |
18-20 |
≤15 |
≤16 |
≤24 |
≤24 |
≤25 |
≤18 |
≤18 |
||
Cold Crushing Strength (MPa) |
22-32 |
30-35 |
≥58.8 |
≥49.0 |
≥29.4 |
≥24.5 |
≥19.6 |
≥49.0 |
≥34.3 |
||
Modulus of Rupture (kg/cm2) |
55-70 |
60-80 |
– |
– |
– |
– |
– |
– |
– |
||
Reheat test,permanent linearchange after heating at |
(1350℃%,3h) |
– |
– |
– |
– |
– |
0~-3 |
0~-0.5 |
|||
(1400℃%,2h) |
– |
– |
– |
– |
– |
– |
– |
0~-0.4 |
0~-0.4 |
||
(1450℃%,3h) |
– |
– |
0～-2 |
0～-3 |
0~-0.4 |
– |
– |
– |
– |
||
(1400℃%) |
0.0-0.2 |
-0.18 |
– |
– |
– |
– |
– |
– |
– |
||
0.2 MPa soft under load （%) |
– |
– |
≥1450 |
≥1430 |
≥1400 |
≥1350 |
≥1300 |
≥1450 |
≥1400 |
||
SiO2 (%) |
57.8 |
52.4 |
– |
– |
– |
– |
– |
– |
– |
||
Al2O3 (%) |
36.2 |
42.1 |
≥42 |
≥42 |
≥42 |
≥40 |
≥36 |
≥40 |
≥40 |
||
Fe2O3 (%) |
2 |
1.4 |
≤1.7 |
≤1.7 |
– |
– |
– |
≤1.5 |
≤1.5 |
||
Cao (%) |
0.5 |
0.4 |
– |
– |
– |
– |
– |
– |
– |
||
Na2O+K2O+Li2O (%) |
0.5 |
0.5 |
– |
– |
– |
– |
– |
– |
– |
||
http://www.lktrefractories.com/
