Wear resistant and fire-resistant castable

The construction of CFB boiler lining is extremely complex, with high material flow rate and large flow in the circulating system. It is required that the refractory used for lining shall have high strength, good wear resistance and excellent workability.

Details

Wear resistant and
fire-resistant castable

Wear resistance, corrosion resistance, high service temperature, long service life and convenient construction

The high-strength wear-resistant refractory castable is made of corundum, silicon carbide and special grade dead burned bauxite as the main raw materials, together with ultra-fine powder and composite additives. It is characterized by high early mid temperature strength, good high temperature performance, stable volume, strong resistance to slag penetration and corrosion, erosion resistance, convenient construction, and strong integrity of lining structure. It is a good wear-resistant material used in CFB boilers at present.

Physical and chemical indexes of products

Item/Model

DFNMJ-1

DFNMJ-2

DFNMJ-3

DFNMJ-4

Al2O3 (%)

≥70

≥75

≥80

≥85

SiO2 (%)

≤26

≤21

≤16

≤11

CaO (%)

≤2.5

≤1.5

≤1.2

≤1.0

Bulk density (g/cm³)

2.75

2.85

2.90

2.95

Compressive strength
(Mpa)

110℃×24h

≥70

≥80

≥85

≥90

 

815℃×3h

≥80

≥85

≥90

≥95

 

1100℃×3h

≥85

≥90

≥95

≥110

Flexural strength
(Mpa)

110℃×24h

≥8

≥11

≥12

≥13

 

815℃×3h

≥9

≥12

≥13

≥14

 

1100℃×3h

≥10

≥13

≥14

≥15

Normal temperature wear(CC)

≤7

≤6

≤6

≤5

Thermal shock stability (900 ℃ water cooling), times

≥25

≥20

≥25

≥20

Note: The performance index can be adjusted according to the service conditions.

Refractory materials with different indicators can be customized according to demand. Call 400-188-3352 for details