Huachen Refractory

Magnesia spinel brick for cement rotary kiln

        
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Magnesia spinel brick

Magnesia spinel brick, also called magnesia alumina spinel brick, it is a basic refractory brick that is frequently used in modern large-scale dry process cement rotary kiln.

Other name: Magnesia alumina spinel brick, Periclase-spinel brick

Model Number: HCR-85A, HCR-85B, HCR-85C, HCR-93A, HCR-93B

Certification: ISO9001-14001

Minimum Order Quantity: 5 MT

Magnesia Spinel Brick

Introduction

Magnesia spinel brick, also called magnesia alumina spinel brick or periclase spinel brick, use magnesite sand (MgO>90%, CaO<2.2%) and high purity industrial alumina power with other additive material as raw material. Periclase is the main crystalline phase of magnesia spinel brick. In order to solve the over hot issue in kiln barrel caused by high thermal conductivity, we successfully developed new type magnesia spinel brick.

Characteristics

1.High mechanical strength

2.Good thermal shock resistance

3.Excellent erosion resistance

Physical & Chemical

Item

HCR-85A

HCR-85B

HCR-85C

HCR-93A

HCR-93B

MgO (%)

83

82

80

93

90

Al2O3 (%)  

9

9

9

5

5

SiO2 (%)

1.0

2.0

3.0

1.0

2.0

Apparent Porosity (% )  

18

18

19

18

18

Bulk Density (g/cm3)

2.9

2.85

2.85

2.9

2.85

Cold Crushing Strength Mpa  

45

40

40

45

40

Refractoriness under load of 0.2 Mpa (℃)

1700

1700

1650

1700

1700

Thermal Shock Resistance(1100℃,water cycle)

10

8

8

8

6

(1000℃)W/mk Thermal Conductivity

3.0

-

2.9

-

3.8

(1400℃)% Thermal Expansion Rate

1.2

-

-

1.5

-

Application

Specially developed for the transition zone of large scale dry-process cement rotary kiln.

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