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알루미나 시멘트(UAC70)

World-class quality Calcium aluminate cement
UAC 70- UAC 70N, 70S

Calcium aluminate cement is demonstrated as high thermal resistance and high wear resistance, which helps it widely used in the refractory industry.

  • 순백색 High strength
  • 수강성 Versatility
  • 고강도 Heat resistance
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World-class quality products
The Best PRODUCT 최고의 내화제품을 위한 파트너
The Best PRODUCT Best partner for best refractories
The Best TECHNOLOGY 내화제품의 품질을 높이는 기술
The Best TECHNOLOGY Constant R&D process
The Best PROCESS 고객 중심의 제품 생산 시스템
The Best PROCESS Customer-oriented manufacturing system
The Best PRODUCTBest partner for
best refractories
Calcium aluminate cement - UAC 70

UAC70 is manufactured by sintering of high purity calcined alumina and limestone at 1,600℃ then ground down to specific blaines. It is composed by Alumina and Calcium oxide and in terms of mineralogical composition, Calcium mono-Aluminate (CaO· Al2O3, CA) in principal phase and Calcium di-Aluminate (CaO· 2Al2O3, CA2) in secondary phase. As a pure cement containing no-additives ever, it is versatile for users to design for various application with their own additives or mixing. In particular it outdoes other brands in stable reactivity and good curing strength. UAC70 family consisted with UAC70N – the basic grade and UAC70S – ca. 1wt% higher content of alumina.

  • High purity with additives-free

  • Good fluidity
  • Excellent thermal resistance (1,700℃)
The Best TECHNOLOGY Constant
R&D process
Characteristics and application

UAC 70 is widely applied to high technology refractories such as LCC, ULCC.

  • •Good fluidity & high performance in LCC, ULCC
  • •Versatile with no-additives, which enables various properties by user’s demand
  • •Performing as additives for special building materials
Specifications
Item Unit UAC 70N UAC 70S
Specification Typical data Specification Typical data
Chemical
composition 		CaO wt% <30 28.9~29.4 <29 27.5~28.2
Al2O3 >69 69.5~70.0 >70 70.6~71.4
SiO2 <0.5 0.2~0.4 <0.5 0.2~0.4
Fe2O3 <0.5 0.05~0.10 <0.5 0.05~0.10
MgO <0.6 0.2~0.5 <0.6 0.2~0.5
Blaine cm2/g >4600 4700~4900 >4000 4300~4500
Flow (tapped) 20℃ 3 min mm >190 200~215 >180 190~205
30 min >170 180~195 >160 170~190
30℃ 3 min >190 200~210 >180 190~205
30 min >170 180~190 >160 170~190
Exothermic peak time(Tp, 20℃) hr:min 9~15 10~13 9~15 10~12
Cured strength (20℃×24hrs) Flexural kgf/cm2 >40 45~55 >40 45~50
Compressive >200 260~300 >200 230~280
(30℃× 24hrs) Flexural >40 45~55 >40 45~50
Compressive >200 260~300 >200 230~280
Dried strength (110℃×24hrs) Flexural - 110~130 - 90~120
Compressive - 750~850 - 680~750
* Castable Formulation (Bauxite etc. : Cement = 94 : 6)
The Best PROCESS Customer-oriented
manufacturing system
Process uac70 제조 공정