Ambition refractories co.,ltd.Refractory material-High Alumina Cement A500

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Refractory material-High Alumina Cement A900

High Alumina Cement A900

The CA-50 series of calcium aluminate cement products produced byAmbition Refractories Co.,Ltd.(hereinafter referred to as “Ambition”) are hydraulic binding agents with alumina contents about 50-60%.
Beacause CA phase (monocalcium aluminate) is the main mineral phase of the CA-50 series of cement products, these products have not only relatively excellent high-temperature service performance but also the characteristics of reasonable and stable hydrating capacity, rapid strength development and outstanding mechanical strength.
According to the development of the hydrated strength of cement and the corresponding value of mechanical strength, Ambition refractories co.,ltd.classifies its CA-50 series of calcium aluminate cement products into different grades to facilitate selection by customers according to the needs and service conditions of their products. Meanwhile, through optimizing the performance of products during production, Ambition refractories co.,ltd. has made its calcium aluminate cement products fit different methods for the construction of monolithic refractories (e.g. casting and gunning) and meet the different requirements of various castable formula systems (e.g. traditional high cement combined castables (CC) and medium cement combined castables (MCC)) for workability.
This series of products contains no additives, assuring the applicability and stability of products.

Performance of Product

This standard applies to the CA-50 series of calcium aluminate cement products including A500,A600,A700 and A900 products produced by Ambition refractories co.,ltd.. GB 201-2000 is also included in the table as a basic reference standard.

Chemical Composition

Characteristic		A900
Al₂O₃	%	54-55
SiO₂	%	≤ 6.0
Fe₂O₃	%	≤ 2.5
CaO	%	≥33
S(total sulfur)	%	-
Cl	%	-

Physical Property

Characteristic			A900
Fineness(0.045mm sieve residue)		%	-
Blaine specific surface area		m²/kg	≥400
Time of setting	Initial setting time	min	≥90
Time of setting	Final setting time	h	≤6:00
Flexural strength	1d	MPa	≥8.0
Flexural strength	3d	MPa	≥10.0
Compression strength	1d	MPa	≥70
Compression strength	3d	MPa	≥80

For the data marked with “*” . In accordance with the provisions of GB 201-2000, the results may be provided when the user has special requirements and these is an agreement between the seller and the buyer; at the same time, fineness should be determined on the basis of specific surface area .
· Chemical composition : Chemical composition : In accordance with GB/T 205-2000 (except for total sulfur and chlorin) ;
· Specific surface area : In accordance with GB/T 8074 ;
· Fineness : In accordance with GB/T 1345; sieve with a mesh size of 0.045mm should be used;
· Setting time : In accordance with Annex A of GB 201-2000;
· Strength : In accordance with the modified provisions in GB/T 17671 and GB 201-2000.

Reference Information

The following data are provided only for reference during the use of product:
· Main mineral phase:CA*
· Secondary mineral phases : C₁₂A₇,C₂AS,CT*
* C=CaO,A=Al₂O₃,S=SiO₂,T=TiO₂

Product Packing

This series of products is packed with cement packing bags conforming to the provisions of GB 9774 , and the weight per bag is 50kg . Other forms of packing and unit weights may be determined by the seller and the buyer through consultation.

Transportation and Storage

During the transportation and storage of calcium aluminate cement , special attention should be paid to preventing moisture for extending shelf life and avoiding impact on the performance of product.
During the transportation , storage and use of calcium aluminate cement , measures should be taken to prevent calcium aluminate cement from contacting other types of cements (e.g.Portland cement , etc.) and harmful impurities(e.g.lime,etc.).
During the use of calcium aluminate cement , the water used for mixing should be clean to prevent the performance of product from being affected by harmful impurities that may exist.

Ambition refractories co., ltd.

http://www.ambitionrefractories.com

email:duangq@vip.163.com