Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 5000 m.t./month

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Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables

Specifications&Data

What is the details of our steel fiber reinforced refractory castable?

Steel fiber reinforced refractory castable is a special castable which is added steel fiber into the castable,can improve the toughness,mechanical strength,thermal shock resistance and spalling resistance.

What is the Feature of Our steel fiber reinforced refractory castable?

1.High mechanical strength,

2.Good thermal shock resistance,

3.Good toughness and anti-stripping,

4.High refractoriness,

5.Tiny linear variation,no cracking,

6.Resistant to scour and erosion,

7.Good volume stability under high temperature.

What is the Applications of our steel fiber reinforced refractory castable?

Steel fiber reinforced refractory castable is mainly used in heat treatment furnace,heating furnace,soaking pit furnace,tundish slag dam weir,seconclary refining and the catalytic cracking unit etc key part of kiln furnace and thermal equipment.

What is the Technique Data of our steel fiber reinforced refractory castable?

Item		Fire clay	High alumina	Corundum
Chemical Composition %	Al2O3 ≥	45	75	90
Chemical Composition %	CaO ≤	1.0	1.0	1.0
Bulk density g/cm3	110°C,24h	2.40	2.70	3.15
	1350°C,3h	2.35	-	-
	1500°C,3h	-	2.65	3.10(1550°C)
Reheating linearchange %	1350°C,3h	±0.5	-	-
Reheating linearchange %	1500°C,3h	-	±0.5	±0.5(1550°C)
Bending Strength MPa	110°C,24h	6	7	7
	1350°C,3h	8	-	-
	1500°C,3h	-	10	10(1550°C)
Compressive strength MPa	110°C,24h	40	40	40
	1350°C,3h	75	-	-
	1500°C,3h	-	85	90(1550°C)
Service temperature °C ≥		1500	1550	1650

$Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables$

Q:The principle of choosing fire-resistant material in Thermal Energy and Power Engineering equipment.: Different thermal technology equipment has different operation condition and select different refractory material. We should take economical and practical as principle.

Q:What are the requirements of refractory temperature of refractory brick?: Refractory temperature of refractory brick is 1650 degree.

Q:What is the new fireproofing standard of external wall thermal insulation materials?: The new national standard "Fireproof? Specification of Building Design" (GB50016-2014) has been issued, it will be carried out from May 1, 2015. Compared with "Fireproof? Specification of Building Design" GB 50016-2006 and "fire?safety?rules of tall buildings design" GB 50045-95 (2005 edition), the major changes of new standard is the following: 1. It has combined with "Fireproof? Specification of Building Design" and "Fireproof? Specification of Tall Buildings Design", and has adjusted incompatible requirements between two standards, and has unified the classification of residential buildings in accordance with the building height; 2. It has increased two chapters including the fire-fighting rescue facilities and wooden structures, and has improved the requirements for fire fighting and rescue, and standardized the fireproofing requirements of wood construction; 3. Additional requirements for the fireproofing requirements of building external insulation system; 4. The fire-fighting equipment is written in a separate chapter and improve relevant contents; cancel the design requirements of fire water supply system and smoke control system, and they are regulated by the relevant national standards; 5. appropriate increase in the high-rise residential buildings and fireproofing technical requirements for high-rise civil building whose height is greater than 100m; 6. add the fireproofing requirements used by covered pedestrian during evacuation; adjust and add designers density of construction materials, furniture, lighting shops and exhibition hall; 7. add the fireproofing requirements of underground warehouses, logistics buildings, large combustible gas tank (zone), ammonia storage tanks, LNG storage tank, and adjust the fire?separation distance of liquid oxygen tank; 8. improve the relevant requirements to prevent vertical or horizontal spread of building fire.

Q:What refractories are accessible with ease in daily life? This material is suitable as a disposable mold and crucible for melting brass.: Well, you have no furnace to cast disposable molds. You can sieve sand which is used for blending cement with siever (left the most fine behind)! And then you can go to hardware (parts) factories directly with molds to ask them to pour. Remember that brass (60 copper) needs to be heated to 1200 ℃, while the crucible is not needed.

Q:What's the function of aluminium dihydrogen phosphate on the refractories?: Mainly used for binder of high-temperature furnace refractory. Characteristics of liquid aluminum dihydrogen phosphate, castable. solid used for refractory spraying coating, chamotte, ceramic construction, which has high break resistance after being dried in 350-500 ° C, phosphate bricks. Characteristics of the solid aluminum dihydrogen phosphate, binding agent used for castable and casting industry: together with the refractory aggregate, ramming mixes at room temperature: Easy to mix, crush resistance, hydration resistance, chamotte, will not become soft even if soaked or boiling in water, molding. Liquid use refractory spraying coating, mainly used for corundum, chrome corundum water gap in refractory industry. The production of chrome aluminum zirconium corundum brick for water-coal-slurry gasifier is especially suitable for site construction applications mainly used for the electrical industry, high-temperature kiln and furnace, hardener, after mixing between 90-110 ° C for 4-24 hours at a constant temperature, forming strong bonding strength, electrical insulation, heat treatment resistance furnace

Q:Refractory materials are needed for casting metallurgy.: High quality refractory materials can not be separated from the process of smelting metal and casting moulding, because the quality of melting furnace, iron / steel ladle directly affect the chemical composition of the metal liquid, and exert irretrievable influence on comprehensive quality of castings. Classification of refractory materials used in foundry smelting process: refractory brick, siliceous brick, high alumina brick, corundum brick, magnesia brick, magnesia brick, magnesia carbon brick. Unshaped refractory materials: ramming material, castable, refractory cement, silica, magnesia, coating material and light insulation material etc.

Q:What kind of refractories do the anode baking furnace use?: Usually the clay refractory bricks will be able to meet the requirements

Q:What is the acceptance standard of refractory?: Feeler gauge is used to check the thickness of the refractory brickwork joint. The top of the gauge can not be sharpened. Feeler gauge is of the width of 15mm, length of 100mm and thickness of 1, 1.5, 2 or 3mm. The thickness is eligible when the depth which the feeler gauge is inserted in is less than or equal to 20mm. Ten places should be inspected per 5m2 of masonry surfaces. It is qualified when the condition in which thickness of the brickwork joint is 50% larger than a predetermined depth is not less than five times and it is excellent when the condition is no more than two times.

Q:What defect does fused cast refractories have ?: In glass production, in addition to refractory as a building material and consider its durability, we still must attach great importance to its influence on glass quality. In such cases, the impact on the quality of glass is mainly the defects that eroded down refractory materials mixed in the glass, thus being prodeced of grass products. Defects are mainly foreign body defects such as sand, knot and wave reinforcement. What may directly affect the quality of glass are the wall brick and brick kiln bottom.

Q:What level is the rock wool board fireproofing material ?: The fire rating classification is a provision for all insulation materials, rather than to separately divide rock wool. Determine the value of the material fire rating according to the relevant test items of 8624. As the rock wool is made from basalt fusion, so it is the level A non-combustible material.

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