aluminate cement

High strength high alumina cement 1). bond of high temperature refractory 2).strength tested by 3days and 28days

High alumina  Cement CA-65-HCA60 is a kind of high alumina cement with Al2O3 con-tent 60-68% stipulated in the new standard GB201-2000.Before pure aluminate cement appeared in China,a kind of refactory cement with low CaO and high Al2O3 was developed in order to get better refractory properties for concrete.It is called

high alumina cement CA65 according to its Al2O3 content and industrial standard was set up as JC236.It has achieved very good result as a hydraulic binder for refactory concrete since then.After 20 years development,a new type of high strength and high alumina cement CA65 came out in 1995.Its main mineralogical phase is CA2,which is used in the project of flow-directing slot of satellite-launching pad to confect low-ablation refractory concrete.Along with the successful development of pure aluminate cement in China,the hydrohardening bond of low CaO high Al2O3 is one of the necessary materials when confectig refractory and low cement castables,but its price is high and so some customers bring forward to use a kind of cement with Al2O3 content less than 70% with which the cost is lower.Therefore,the pure aluminate cement CA65was developed.At present,we have two kinds of CA65 products,one is made by calcining industrial Aluminium Oide and selected limestone, which is called pure aluminate cement CA65P and its main mineralogical phase is CA,and the other is made by calcining fine natural bauxite and limestone,which is called Aluminate Cement CA65-H.Because they have different properties and usages,please choose them carefully in order to avoid unnecessary loss.

1. Features: 

1).bond of high temperature refractory2).longer setting time3).strength tested by 3days and 28days4).high early and rapid strength,and higher strength of later term5).better stability in air6).excellent result in the project of flow-directing path of satellite-launching pads.No repairs are needed after tens of launchings2.Properties:

Model No.:		HXCA-65H
Chemical composition
Al2O3SiO2Fe2O3R2OSCl	%	about 65  below 5.0 below 2.0 below 0.4----- ------
Physical properties
fineness
0.045 residue	%
Blaine	m2/kg	above 300
Setting time
initial	h:min	60
final		18
Flexural strength
6h	MPa	2.5
1d		5.0
3d		10.0
Compressive strength
6h	MPa	20
1d		45
3d		85

*According with the regulations of GB201-2000,we should offer the report of S,Cl contents and the residue of the size and 6hour strength when the customer requires or the buyer and seller have the related agreement.

4.Application:

   Refractory castables used between 1300 to 1600 C can be confected according to different aggregate properies.5.Testingmethod                                                                                                                                                                                                                                Chemical composition:According with GB/T205(with the exception of sulfur and chlorin)Blaine:According with GB/T8074Fineness:According with GB/T1345 with screen of 0.045mmSetting time:According with GB201-2000Strength:According with GB/T17671 & GB201-2000Packing25kg net in standard complex bag of paper and woven plastics,or as per consumers' requirement.

aluminate cement