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Low Porosity Clay Fire Brick

  • Low Porosity Clay Fire Brick

1. Strong anti-erosion ability
 
2. low porosity, high density
 
3. High mechanical strength
 
4. strong resistance to penetration
Low Porosity Clay Fire Brick Introduction
 
Low Porosity Clay Brick is made up of three raw materials: dead burning clay dip, dead burning combined clay, and white coke gem, which are respectively broken into 5-3mm, 3-1mm, and ≤0.088mm combined with other 6 kinds of additives. The clay material is mixed into granules, binder, fine powder and evenly. On the 260T friction brick, the fire brick is pressed into the fire brick blank by 6-8 times, and dried in the drying kiln at 110℃ for 16h. The moisture of the refractory bricks is <1% fashioned like tunnel kiln firing.



                                                                       
 
Low Porosity Clay Bricks Feature
 
1. Strong anti-erosion ability
 
2. low porosity, high density
 
3. High mechanical strength
 
4. strong resistance to penetration
 
5. high strength, high refractoriness
 
6. Organizational compactness
 
7. thermal shock stability is good, anti-flaking
 
Low Porosity Clay Bricks Application
 
Item
 
Brand
Low Creep Clay Fire brick Low porosity clay brick Special high alumina brick
 
Chemical Composition
Al2o3(%) 42~53 >42 >58
Fe2o3(%) 1.6 2.0 1.5
Cao+Mgo(%) 0.7 0.7 0.7
Na2o+k2O(%) 0.8 0.8 0.8
Bulk Density g/cm3 2.2 2.2 2.45
Apparent Porosity 17 17 16
Cold Crushing Strength 40 40 50
0.2MPa Refractoriness
Under Load
1450 1450 1600
High temperature creep%(1280℃,0.2mpa,25h)CS 0.4 - 0.4
High temperature flexural strength 1200℃ 10 - -
1350℃ 4 - 6
Thermal expansion rate (20℃-100℃)< 0.7 0.7 0.7
 
 
How to Make Low Porosity Clay Bricks?
 
For the production of dense low porosity clay brick, the first condition is to use low porosity materials. According to the principle of the closest packing, reasonable particle grading, reasonable use of binder, fully uniform mixing, high pressure forming and proper increase of firing temperature and prolonged holding time are all important measures to reduce the porosity in the production of dense refractories. In the production of dense castables, the addition of ultrafine powders and dispersants to the furnish can form a tighter packing and obtain a low porosity product. In the production of insulated refractory products requiring high porosity, the raw materials of heat insulating materials are used, chemical foaming or the addition of combustibles in the ingredients to generate pores and increase the pores.