Magnesia chrome brick

Product

Refractory Brick Magnesia spinel brick Magnesia hercynite brick Silica mullite brick Magnesia chrome brick Anti spalling high alumina brick Phosphate bonded high alumina brick High strength alkali resistant brick Insulating brick and Calcium silicate board Composite refractory brick
Monolithic Refractories High strength mullite castable Steel fiber reinforced castable Corundum mullite castable High alumina low cement castable High alumina castable Corundum abrasion resistant castable Mullite wear resistance castable High alumina self flowing castable Alkali resistance refractory castable
Refractory Anchor Refractory anchor

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Home > Refractory Brick> Magnesia chrome brick

Magnesia chrome brick

In the past, magnesia chrome brick usually work at the burning zone in cement rotary kiln, now it has gradually been replaced by magnesia spinel bricks, which do not contain chromium.

Other name: Magnesia-chrome brick

Model Number: SMC-8, SMC-12, MC-8, MC-12, COMC-8, COMC-12, MC-12A, MC-12B

Certification: ISO9001-14001

Minimum Order Quantity: 2 MT

Magnesia chrome brick

Introduction

Magnesia chrome brick is a basic refractory brick, used high purity composite spinel as raw material. Periclase and composite spinel (XO.Y2O3). XO means MgO and FeO, while Y2O3 points to Cr2O3, Al2O3, Fe2O3. Based on different making method of magnesia chrome brick, there have several types magnesia chrome bricks: semi-rebonded magnesia chrome brick, common magnesia chrome brick, fused cast magnesia chrome brick, pre-reaction magnesia chrome brick, direct bonded magnesia chrome, unfired, etc.

Characteristic

1. High corrosion resistance
2. Good spalling resistance
3. High mechanical strength

Physical & Chemical

Item	SMC-8	SMC-12	MC-8	MC-12	COMC-8	COMC-12	MC-12A	MC-12B
Type of magnesia chrome brick	Semi-direct bonded		Magnesia chrome brick		Pre-reaction		Unfired
MgO (%)	70	60	65	65	75	65	60	55
Cr₂O₃(%)	8	12	8	12	8	12	12	12
SiO2 (%)	3.5	3.5	-	-	2.0	2.5	-	-
Apparent Porosity (% )	20	20	21	21	18	18	16	16
Bulk Density (g/cm³)	2.95	3.0	2.9	2.95	3.0	3.05	3.05	3.0
Cold Crushing Strength Mpa	45	40	35	30	40	40	60	55
Refractoriness under load of 0.2 Mpa (℃)	1600	1650	1550	1580	1650	1650	1550	1600
Thermal Shock Resistance(1100℃,water quenching cycle)	5	5	4	-	-	-	-	-
(1000℃)W/mk Thermal Conductivity	2.7	-	2.7	-	-	-	-	-
(1400℃)% Thermal Expansion Rate	-	1.5	-	-	-	-	-	-

Application

Magnesia chrome brick mainly be used at burning zone in cement rotary kiln. Due to the prevalence of environmental protection concepts, magnesia chrome brick in modern cement kiln has gradually been replaced by magnesia spinel bricks which do not contain chromium.

Link： Google