Dense Castable Refractory

Refractory castables are mainly used in kiln furnaces in the metallurgical industry, as well as in furnaces and thermal equipment for the petroleum, chemical, building materials, power and machinery industries. It can be used directly without firing, with convenient construction, high material utilization rate and high normal temperature strength. Refractory castables can be classified into dense castable refractory and insulating refractory castables according to the porosity.

Castable Refractory
Castable Refractory in RS Castable Supplier

Get Free Quote

Dense Castable Refractory for Circulating Fluidized Bed

Dense refractory bricks and castables for circulating fluidized bed combustors are required to have wear resistance. Typically, the temperature of the circulating fluidized bed combustor is about 900 ° C. Therefore, the wear of the dense refractory material used in the combustion chamber of the circulating fluidized bed furnace is mainly worn by the high temperature solid particles washed by the high speed cycle.

Low Cement Castable
Low Cement Castable with High Quality

Get Free Quote

Commonly, three types of dense castable refractory (low cement castables LCC-45, LCC-80 and high alumina plastics with an aluminum content of 80%) are used in the circulating fluidized bed combustor.

High Alumina Dense Castable Refractory

High alumina refractory products, including refractory castables, are typically graded according to the AL2O3 content of the raw materials used. The level of aluminum also represents the difference in density. For example, the density of raw materials with an AL2O3 content of more than 80% is more than 2700 Kg/m3. The density of the products produced by the low-content raw materials is also relatively low.

High Alumina Low Cement Castable with Low Density and High Strength For Sale
Cheap High Alumina Low Cement Castable

Get Free Quote

Therefore, the difference between high alumina dense castable refractory and ordinary high alumina refractory castables lies in the content of AL2O3 and the volume density.

Physical and Chemical Indicators of Clay and High Alumina Dense Csatable Refractory

Item

Physical and Chemical Indicators

RSNTJ-40 RSNTJ-45 RSGLJ-50 RSGLJ-60 RSGLJ-65 RSGLJ-70 RSGLJ-80
W(Al2O3)/% ≥ 40 45 50 60 65 70 80
Refractoriness/CN ≥ 164 170 170 172 172 172 178
Bulk Density/(g/cm3) ≥ 110℃*24h 2.05 2.10 2.15 2.30 2.40 2.45 2.65
Bending Strength(MPa) ≥ 4.0 4.0 4.0 5.0 6.0 6.0 7.0
Cold Crushing Strength(MPa) ≥ 25 25 25 30 35 35 40
Thermal Conductivity Coefficient

(Experimental temperature*3h)/%

±0.8

(1300℃)

±0.8

(1300℃)

±0.8

(1350℃)

±0.8

(1400℃)

±0.8

(1400℃)

±0.8

(1400℃)

±0.8

(1500℃)

Dense Refractory Castables Properties

Item Dense Refractory Castables Properties
Al2O3 (%) CaO(%) Refractoriness(℃) Refractoriness Linear Change(≤±1%) After 110±5℃ Drying
Temperature Cold Crushing Strength(MPa) Bending Strength(MPa)
Clay bonded refractory castable RSNL-70 70 1760 1450 10 2
RSNL-60 60 1720 1400 9 1.5
RSNL-45 45 1700 1350 8 1
Cement combined with refractory castable RSGL-85 85 1780 1500 35 5
RSGL-70 70 1720 1450 35 5
RSGL-60 60 1700 1400 30 4
RSGL-50 50 1660 1400 30 4
RSGL-42 42 1640 1350 25 3.5
Low cement combined with refractory castable RSDL-80 80 2.5 1780 1500 40 6
RSDL-60 60 2.5 1740 1500 30 5
Phosphate combined with refractory castable RSLL-75 75 1780 1500 30 5
RSLL-60 60 1740 1450 25 4
RSLL-45 45 1700 1350 20 3.5
Sodium silicate combined with refractory castable RSBN-40 40 100 20
Standard: YB/T5083-1997

Dense Castable Refractory Supplier

Rongsheng is a professional manufacturer of refractory materials. As a Dense Castable Refractory Supplier, we are not only able to produce and sell various types of refractory castables for our customers’ thermal equipment, but we also have a professional R&D team aiming at developing the custom refractory castables. Our goal is to provide better service to our customers. If you are looking for a Dense Castable Refractory, please feel free to contact RS Supplier.

Leave Your Requirements on RS Kiln Refractory Bricks And Castable Materials! We Will Reply You In 12 Hours!:
El directorio y buscador de Mexico