The water absorption rate of the selected first-grade high-alumina cli
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Category:
Shape Refractory
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154872569@qq.com
Special Alumina Brick Details
The water absorption rate of the selected first-grade high-alumina clinker is less than 5%, and the second-grade high-alumina clinker is less than 7%. Then, the soft clay and bauxite clinker with a water content of less than 4% are mixed and finely ground. Using this mixed fine grinding powder ingredients can reduce the porosity of the brick.
The particle gradation during batching, the ratio of coarse to fine is 4:2:4, and the large particles should not exceed 5mm. The order of addition during mixing is as follows: firstly add coarse particles, then add sulfite pulp waste liquid, premix for 3 minutes, and then add high aluminum fine powder for mixing. It is strictly forbidden to add coarse and fine particles to the mill and add sulfurous acid pulp waste liquid at the same time.
In order to reduce the porosity of special alumina bricks, the single-sided pressure is changed to double-sided pressure to double-sided pressure, and the number of blows varies according to the amount of feed. If it is fired by inverted flame kiln, the position of the fire-absorbing hole should be adjusted so that the middle is dense and the edges are thin, and it is properly encrypted near the kiln door, so that the temperature difference between the upper and lower kilns, and the temperature difference between inside and outside are not more than 20 degrees.
Features
Good performance in high temp refractoriness under load
Higher temperate resistant with good refractoriness
Lower impurity content
Good thermal shock resistance performance
Excellent resistance in slag abrasion
Good cold crush strength
Applications
Lime Kiln Cement Kiln
Various Rotary kiln
Glass melting Tank
Electric Arc Furnace
Blast Furnace
Chamber Combustor
Nonferrous Metal Furnace
Various high-temp Furnace
Specifications
SPecial-alumina refractory birck
JUCOS Alumina contents range from 60% to 80%
Widely used throughout metallurgical industry
Physical And Chemical Indicators
Brand |
SAL80 |
SAL75 |
SAL70 |
SAL60 |
|
Refractoriness (SK) |
39 |
39 |
38 |
37 |
|
Apparent Porosity (%) |
17 |
18 |
18 |
18 |
|
Bulk Density (g/cm3) |
2.75 |
2.65 |
2.65 |
2.50 |
|
ColdCrushing Strength (MPa) |
80 |
70 |
70 |
60 |
|
@ 1,000℃Thermal Linear Expansion(%) |
0.65 |
0.65 |
0.55 |
0.53 |
|
@ 1,500℃ x 2hrs |
±0.2 |
±0.2 |
1450℃x2h ±0.2 |
1450℃x2h ±0.2 |
|
@0.2MPa Refractoriness Under Load (℃) |
1,670 |
1,650 |
1,600 |
1,580 |
|
Chemical Composition (%)
|
Al2O3 |
80 |
76 |
70 |
60 |
Fe2O3 |
0.8 |
1.0 |
1.2 |
1.2 |
|
Main Applications |
Lime Kiln Cement Kiln |
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Products Desc
Products Description The main components of alkali resistant bricks are clay, high alumina, quartz sand, bauxite and other alkali resistant materials, among which quartz sand and bauxite can improve alkali resistance, clay and high alumina can increase sintering pressure, so that alkali-resistant bri...
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