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Chemical and physical indexes of preheating air chamber for refractory and wear-resistant heat preservation materials of circulating fluidized bed boiler

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-06-10     

Preheat the wind chamber

Medium quality insulation castable

YG - what ZJ had - 1.6

Bauxite aggregate 60

Drift beads 10

Silicon powder 5

Additive 25

Fire resistance >1500℃;    Volume density < 1.6g /cm3;

Normal temperature compressive strength > 30mpa;                       Bending strength >10 Mpa;

Change rate of reburning line is 0.2%.Thermal shock stability >20 times;

Maximum operating temperature 1300℃

4 years

The above

   Main material is medium quality insulation castable.This part needs three kinds of physical properties, such as heat preservation and fire resistance and thermal shock stability. Our factory USES bauxite aggregate and floating beads as two main raw materials :(1) bauxite aggregate, which plays a role in fire resistance and thermal shock stability;(2) floating beads, play a role in heat preservation.The medium quality thermal insulation castable produced by our factory has a good effect on the parts of fluidized bed.





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