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Kun Hao Industry Co., Limited

Refractory Cement, Calcium Aluminate Cement, Sintered Refractory Cement manufacturer / supplier in China, offering Calcium Aluminte Refractory Cement Ca70 in Electric Furnace, Refractory Aluminate Cement on Sale, Calcium Aluminate Cement A70 in Refractory and so on.

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Calcium Aluminte Refractory Cement Ca70 in Electric Furnace

FOB Price: US $320-370 / Ton
Min. Order: 1 Ton
Min. Order FOB Price
1 Ton US $320-370/ Ton
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Production Capacity: 60, 000tons Anuual
Transport Package: Ton Bag or Wooden Pallet
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: fused ca70
  • Feature: Instant Materials
  • Shape: Powder
  • Color: Palm Brown
  • Grain Size: Cusomized
  • Trademark: KH
  • Origin: Zhengzhou
  • Refractoriness (℃): 1580< Refractoriness< 1770
  • Type: Refractory Material
  • Material: Alumina Cement
  • Specific Area: Customized
  • Principal Phase: Ca,Ca2
  • Specification: 0.84m^3
  • HS Code: 3816000000
Product Description
Calcium Aluminate Cemet CA70,High Alumina Cement,Refractory Cement,Fused Refractory Cement:

Fused Calcium Aluminate Cements CA70 are calcined by natural high grade bauxite and limestone as selected raw material. The main phase of this series is CA and CA2, α Al2O3 which mainly formed the clinker. After grinded to the best particle size distribution, the cements will meet the demand of the most critical customers.
High early strength, fast setting and hardening.
The high heat of hydration, the hydration heat concentration
The high heat of hydration with exothermic concentration
 The frost resistance is good, normal hardening can also in the  lower temperature environment
Chemical erosion and anti-bio at wide range, especially strong anti sulfate erosion.
 Ideal for high temperature and thermal shock resistance performance is very admirable .
Mainly used in formulating monolithic refractory and widely in steel, crude oil, electrical, nonferrous metal, construction and kiln industries.

Application:

Usually used as refractory binders in boiler
  High heat of hydration with exothermic concentration
  Good workability, high construction efficiency
  Mainly applicable to general industrial and civil boiler temperature below 1300 ºC


We can offer high alumina cement with different fineness as per the customers' requirements.
1)Particle size can be customized  
2)Chemical and physical index can be customized
3) Testing methods of S, Cl- can be acquired if customer need


Technical Data:
 
ItemsCA-70ECA-70GCA-70A*
Al2O3 ≥68≥68≥68
CaO≤ 31≤ 31≤ 31
SiO2≤0.8≤0.8≤0.8
 Fe2O3≤0.5≤0.5≤0.5
Specific Area(cm2/kg) ≥4000≥4000≥4000
Residue on sieve 0.045mm( %)≤15≤15≤15
Initail Setting Time(min)≥30≥30*
Final Setting Time(h)≤ 6≤ 6*
Compressive Strength(MPa)6h  (≥)10--
24h (≥)404040
Breaking Strength(Mpa)6h  (≥)2--
24h (≥)555


Calcium Aluminte Refractory Cement Ca70 in Electric Furnace
Calcium Aluminte Refractory Cement Ca70 in Electric Furnace
Calcium Aluminte Refractory Cement Ca70 in Electric FurnaceCalcium Aluminte Refractory Cement Ca70 in Electric Furnace

Summary:
Calcium aluminate (CA) cements are similar to the more familiar Portland cements in that they both require water for hydration, they both form concretes that set in about the same time, and they both require similar mix designs and placing techniques. There are, however, important differences between the two cements. First, Portland cements are made by reacting limestone and clay to produce calcium silicates, while calcium aluminate cements (also called high-alumina cements) are made by reacting a lime-containing material with an aluminous material to produce calcium aluminates.
    Second, calcium aluminate cements, when mixed with suitable aggregates, are generally used for special applications where advantage can be taken of their unique properties. Calcium aluminate cements are rarely used for cast-in-place structural work, except for emergency repairs and foundation construction. Some of the purposes for which CA cement concretes may be specified include: cold weather work; resistance to high temperatures; resistance to mild acids and alkalies; resistance to sulfates, sea water, and pure water; and rapid hardening. It is important to differentiate between rapid setting and rapid hardening. Calcium aluminate cement concretes are not rapid setting. They are, however, rapid hardening; that is, they will develop as much strength in 24 hours as Portland cement concrete will achieve in 28 days.Calcium aluminate cement concretes should be cured for at least 24 hours, using a water spray or fog, ponding, wet burlap or a curing membrane. When working with calcium aluminate cement concrete for the first time, one must remember that is should be handled much the same way as Portland concrete. For satisfactory results, however, two points should be emphasized. First, keep the water-cement ratio below 0.4 and use mechanical vibration to place the concrete. Second, these concretes develop heat much more rapidly than Portland cement concrete does, and good curing for 24 hours after placement is mandatory for satisfactory strength gain.
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