Cement industry

Thanks to new dry firing technology as a basis, it provides automation of cement production, high efficiency and environmental protection. Including pre-decomposition system outside the oven, rotary kiln system and cooling system.

Fire Bricks for Cement Industry

There are many types of fire bricks, used in the cement industry: magnesite-chrome brick with straight bond, magnesite chrome brick, magnesia spinel brick, anti-strip alumina brick, silicon mullite brick, serial alkali-resistant brick.

Direct connection magnesite chrome bricks

Direct bonded magnesite chrome brick – this is a product, made from fused magnesite and chrome concentrate, sintered high or secondary purity. It sinteres at high and super temperature with less foreign materials, where the glass phase is concentrated in a triangular space, and the crystalline phase is directly bonded to the crystalline phase. Low porosity, high compressive strength, high wear resistance, good resistance to erosion and thermal shock, as well as the property of preventing the formation of streaks, it is applied in the dry production cement rotary kine firing zone.

Items	DMC-4	DMC-6	DMC-9a	DMC-9b	DMC-12
MgO% ≥	80	75	70	70	60
Cr2O3 %   ≥	4	6	9	9	12
SiO2 %  ≤	2.5	2.8	2.8	3.0	3.2
Apparent porosity % ≤	18	18	18	19	19
MPa CCS ≥	40	40	40	40	35
0.2MPa Fire resistance under load ℃ ≥	1600	1600	1600	1580	1580
Thermal shock resistance,Cycle (1100℃，hardening in water) ≥	4	5	5	5	5

Magnesite-chrome brick

Magnesite-chrome brick – this is a product, sintered at temperatures above 1600℃ until, until periclase and magnesium-chromium spike are used as the main materials. curing procedures or sheet steel outer packaging. Features good thermal shock resistance, corrosion and streaking, it is applied in the dry production cement rotary kine firing zone.

Items	Magnesia-chrome brick
	MGe-8	MGe-12	MGe-16	MGe-20
MgO % ≥	60	55	45	40
Cr2O3,% ≥	8	12	16	20
Apparent porosity % ≤	21	21	21	21
CCS ，MPa ≥	30	30	30	30
0.2MPa Fire resistance under load ℃≥	1530	1550	1550	1550

Magnesia-spinel brick

Items	MLJ-70	MLJ-75	MLJ-80
MgO % ≥	70	75	75
Al2O3 %	8-13	8-13	8-13
Fe2O3 % ≤	1.5	1.5	1.5
CaO % ≤	2.0	2.0	1.5
SiO2 %  ≤	3.0	2.0	1.5
Apparent porosity %≤	19	18	17
Bulk density g/cm3 ≥	2.95	2.95	3.00
MPa CCS ≥	45	45	50
0.2MPa Fire resistance under load ℃ ≥	1600	1650	1650
Thermal shock resistance,Cycle (1100℃, hardening in water)	8	10	10

Anti-strip alumina brick and silicon mullite brick

Fireproof alumina brick with anti-strip effect, produced by our company, made from special bauxite fireclay by adding aragonite or ZrO2 and molding under high pressure in certain proportions. It has high anti-strip properties, potassium resistant, sodium, sulfur dioxide, chlorine and basic salts, as well as low thermal conductivity. It is an ideal material for the transition and decomposition zone of the rotary kiln.

Silicone mullite brick, produced by our company, made from special bauxite fireclay by high pressure molding and high temperature sintering. It features high compressive strength at room temperature and high structural strength. Good heat resistance and wear resistance, as well as high anti-banding properties make it an ideal material for the transition and decomposition zone of the rotary kiln.

Items	Anti-strip high alumina brick	Silicon mullite brick
	RSBR-70	AZM-1650	AZM-1680
Al2O3 %  ≥	70	63	60
ZrO2%	6-8	—	—
Fire resistance ，℃ ≥	1790	1790	1790
Bulk Density， g/cm3 ≥	2.5	2.55	2.60
Apparent porosity，%	24	20	21
CCS MPa ≥	60	65	70
0.2MPa Fire resistance under load ℃ ≥	1700	1650	1680
CC CWT ≤	–	6	5
Thermal shock resistance,Cycle (1100℃, hardening in water) ≥	30	20	25
MPa MOR ≥	–	12	15

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