Energiaipar

The working environment of CFB boiler is high speed fluidized particles abrasion and impact, chemical reaction and corrosion, frequent thermal exchange. So CFB boiler lining refractory have high mechanical strength, excellent abrasion resistance, jó korrózióállóság, good thermal shock resistance and so on.

Wear-resistant Castables

The wear resistant castables, made from fused corundum, super grade bauxite, sillimanite, alumina powder and silicon powder as raw materials, are featured with convenient construction, good wear esistance,good spalling resistance, and high strength at early and mid-high temperature period, which overcome the disadvantages of traditional castables.

Tétel		Leírás
Bulk Density, g/cm³	110℃ ×24h	≥2.75
Permanent Linear Change On Heating , %	1100℃ ×3h	±0.4
CCS , MPa	110℃ ×24h	≥100
	1100℃ ×3h	≥120
CMOR , MPa	110℃ ×24h	≥10
	1100℃ ×3h	≥18
Thermal Shock Resistance，Cycle	1000℃ Water Quenching	≥20
Wear-resistance Index,cc	ASTM C-704	＜6
Chemical Composition , %	Al2O3	≥75
	SiO2	＜18
Maximum Service Temperature,℃		1600
Service Area	Dense phase area and transition area of combustion chamber, furnace bottom, cyclone cylinder outlet mixing chamber.

Steel Fiber Reinforced Wear-resistant Castables

The castables are produced by adding some silicon carbide, mullite and steel fiber, to enhance the tensile property, strength and thermal shock resistance on the basis of the technology of optimized wear resistance castables. It is used in cutting direction entrance of cyclone separator and “target area” on cartridge of circulating fluidized bed boiler, which are the worst wear parts.

Márka		RSNM-A
Tétel		Leírás
Bulk Density , g/cm³	110℃ ×24h	≥2.8
Permanent Linear Change On Heating , %	1100℃ ×3h	±0.4
CCS , MPa	110℃ ×24h	≥100
	1100℃ ×3h	≥120
MOR , MPa	110℃ ×24h	≥17
	1100℃ ×3h	≥20
Thermal Shock Resistance，Cycle	1000℃ Water Quenching	≥25
Wear-resistance Index,cc	ASTM C-704	≤5
Chemical Composition,%	Al2O3	≥80
	SiO2	＜11
Maximum Service Temperature,℃		1600
Service Area	Horizontal flue at furnace outlet, straight part and cone-shaped part of separator ,entry and exit, refeeder and dipleg etc.

Wear-resistant Plastic Refractories

Compared with the traditional refractory plastic,the wear resistant plastic refractories are featured with good plastic ability, long shelf life,high strength and good wear resistance. The strength of the material increases with the increasing temperature due to the adoption of composite binder. The wear-resistant plastic refractories,using fused corundum,mullite and super grade bauxite as main raw materials,the addition of Guangxi white clay ensures that the refractory plastic can have high plasticity, enhance the crushing strength and wear resistance, especially suitable for repairing CFB boilers and the overall construction of wear resistant lining. Refractory plastic can be processed into non-baking materials, then furnace can be directly start if necessary.

Márka		RSNMKS-A
Tétel		Leírás
Bulk Density , g/cm³	110℃ ×24h	≥2.7
CCS , MPa	110℃ ×24h	≥80
	1100℃ ×3h	≥100
MOR , MPa	110℃ ×24h	≥12
	1100℃ ×3h	≥14
Chemical Composition , %	Al2O3	≥80
Maximum Service Temperature , ℃		1600
Wear-resistance Index,cc	ASTM C-704	≤6
Service Area	Wear resistant parts,such as dense phase area, overheating screen, separator target area, horizontal flue etc.

Thermal Shock Resistant Castables

Most CFB furnaces are ignited under the bed, the ignition temperature is high, and the temperature rises rapidly after ignition; The oil gun will be turned off after the boiler reaches 650 fokon, and the temperature will drop to 150 degrees instantaneously. Ebből adódóan, thermal shock resistant and high refractoriness are required, especially in the air chamber, igniter, and water-cooled air chamber. Thermal shock resistant castable is the best choice for these areas.

Márka		RSKRZ-1
Tétel		Leírás
Bulk Density，g/cm³	110℃ ×24h	≥2.8
CCS，MPa	110℃ ×24h	≥100
	1100℃ ×3h	≥120
MOR，MPa	110℃ ×24h	≥17
	1100℃ ×3h	≥20
Thermal Shock Resistance，Cycle	1000℃ Water Quenching	≥25
Maximum Service Temperature，℃		1600
Service Area	Igniter, ignition air flue, water cooling chamber

Fireclay Castables

Márka		RSNTJ-2
Tétel		Leírás
Bulk Density，g/cm³	110℃ ×24h	2.2-2.4
CCS，MPa	110℃ ×24h	≥40
	1100℃ ×3h	≥50
MOR，MPa	110℃ ×24h	≥5
	1100℃ ×3h	≥6
Thermal Shock Resistance，Cycle	1000℃ Water Quenching	≥20
Maximum Service Temperature，℃		1400
Service Area	Ignition duct, mixing chamber, coal economizer beam

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