CMIE LMC Magnesia-based Bricks

1. Magnesia Brick

This product uses periclase as the main mineral phase. It is characterized by good volume stability and resistance to slag erosion, thus widely used in high-temperature industrial furnaces such as iron & steel and non-ferrous metal smelting.

Specs \ Brand	MZ-87	MZ-89	MZ-91	MZ-95	MZ-96	MZ-97	MZ-98
MgO ≥(%)	87	89	91	94.5	95.5	96.5	97.5
CaO ≤ (%)	3	3	3	2	2	2	2
Cold Crushing Strength ≥ MPa	39.2	49	58.8	39.2	39.2	39.2	44.1
Apparent Porosity ≤ %	20	20	18	20	20	18	18
Initial Softening Temperature under load 0.2MPa ≥ºC	1520	1540	1550	1620	1650	1680	1700

2. Magnesia-Chromite Brick

2.1 Magnesia-Chromite Brick

This product uses dead burned magnesite and chromium oxide as raw materials and is made through high pressure shaping and high temperature firing. It is characterized by low heat expansion coefficient, good thermal shocking resistance and anti-corrosion performace, which is widely used in open hearth furnace, cement rotary kiln and other industrial furnaces.

Specs \ Brand	MGe-20	MGe-16	MGe-12	MGe-8
MgO ≥(%)	40	45	55	60
Cr2O3 ≥(%)	20	16	12	8
Cold Crushing Strength ≥ MPa	24.5	24.5	24.5	24.5
Apparent Porosity ≤ %	23	23	23	24
Initial Softening Temperature under load 0.2MPa ≥ºC	1550	1550	1550	1530

2.2 Direct-Bonded Magnesia-Chromite Brick

This product uses dead burned magnesite and chromium oxide as raw materials and is made through high pressure shaping and high temperature firing. It is characterized by large crystal size in the internal structure, high direct binding rate and good resistance to cracking. It is an ideal brick lining material for refining furnaces, electric arc furnaces, glass melting kilns and cement rotary kilns, in virtue of being low alkali and neutral, thus of good resistance to slag corrosion in low acid furnace charges.

3. Magnesia-Alumina Brick

It uses dead burned magnesite as main raw material adding some industrial grade aluminium oxide or bauxite (Al2O3≥90%) through processes of blending, shaping and firing in tunnel kiln. Its matrix (ground mass) is mainly periclase - magnesia-alumina spinel. It is featured by very good property of anti-spalling and mostly used in the roof of open hearth furnace and high temperature position of other industrial furnaces.

Specs \ Brand	ML-80A	ML-80B	ML-84	ML-85A	ML-85B
MgO, %, ≥	80	80	84	85	85
Al2O3, %, ≥	5-10	5-108	6-8	4-8	4-8
Initial Softening Temperature under load 0.2MPa ≥ºC	1600	1500	1630	1650	1630
Apparent Porosity ≤ %	18	20	17	18	19
Cold Crushing Strength ≥ MPa	39.0	29.4	45	45	38
Anti Thermal Shocking Times ≥	3	3	4	3	3

4. Magnesia-Alumina-Chromite Brick

This product is made just by adding small amount of chromium oxide in the course of making magnesia-alumina brick and fired under high temperature which is featured by good high- temperature strength, good property of anti-spalling and higher initial softening temperature under load. It is ideal material for making the roof of open hearth furnace.

5. Magnesia-Carbon Brick

Using high purity dead burned magnesite and natural high purity graphite as raw materials and high quality phenolic resin as binder, this product is a unfired brick that is made through high speed blending, evacuated high pressure shaping, heat treating and other processes. It is featured by dense matrix structure, reasonable phase distribution, good properties of anti-spalling, anti-corrosion, high temperature volume stability and heat conductivity. It is mainly used in converter, refining furnace, high power and ultra-high power electric arc furnace and other furnaces.


Brand	*Item	Physical and Chemical Specifications					**Main Material	Application
		At Normal Temperature			1,400^oCx 0.5h High Temp. Bending Strength MPa	C(%)
		App. Porosity %	B.D. g/cm³	Crushing Strength MPa	1,400^oCx 0.5h High Temp. Bending Strength MPa	C(%)
Applied for Converter
H10C	Typical	3.5	2.89	33.0	15.5	11.8	DBM97 FM97	mouth of converter
H10C	Guartd.	≤5.5	≥2.80	≥24.5	≥8	≥10	DBM97 FM97	mouth of converter
H20C	Typical	3.1	2.93	33.3	-	18.4	FM97	small converter
H20C	Guartd.	≤5.5	≥2.75	≥24.5	≥10	≥17
H20C-1	Typical	2.4	2.91	31.3	-	19.2
H20C-1	Guartd.	≤5.0	≥2.80	≥24.5	≥10	≥17
H20E3	Typical	2.8	2.92	32.6	13.2	19.3	FM98	medium or small converter
H20E3	Guartd.	≤5.5	≥2.75	≥24.5	≥10	≥17
H20E3-1	Typical	2.9	2.92	34.6	15.7	18.15
H20E3-1	Guartd.	≤5.0	≥2.8	≥30	≥12	≥17
H20E-R	Typical	2.9	2.90	33.9	20.5	19.74	big crystal FM98	air port of furnace bottom
H20E-R	Guartd.	≤4.0	≥2.85	≥30	≥12	≥17	big crystal FM98	air port of furnace bottom
A17	Typical	3.0	2.87	31.3	14.4	15.2	DBM97/98 FM97/98	medium or small converter
A17	Guartd.	≤5.5	≥2.80	≥24.5	≥8	≥14
A17-1	Typical	2.6	2.89	36.5	15.7	18.36
A17-1	Guartd.	≤5.0	≥2.85	≥30	≥10	≥14
Applied for Ultra-high Power EAF
MT14A	Typical	1.5	3.01	35.6	-	14.91	big crystal FM98	EAF hot spot
MT14A	Guartd.	≤4	≥2.95	≥30	≥10	≥14	big crystal FM98	EAF hot spot
MT14B	Typical	2.5	2.99	36.7	16.0	14.92	FM98	wall of EAF
MT14B	Guartd.	≤4	≥2.95	≥30	≥10	≥14	FM98	wall of EAF
MT9A	Typical	2.0	3.05	42.8	-	10.38	FM98	bottom of EAF
MT9A	Guartd.	≤4	≥3.00	≥35	≥10	≥9	FM98	bottom of EAF
Applied for Refining Furnace or Ladle
LF20	Typical	2.8	2.90	34.4	-	19.2	FM97	refining furnace or stag line of ladle
LF20	Guartd.	≤5	≥2.8	≥24.5	-	≥18
LF12	Typical	3.5	2.91	38.1	-	13.1
LF12	Guartd.	≤5	≥2.85	≥30	-	≥12
* Guartd.=guaranteed. ** DBM=dead burned magnesite, FM=fused magnesite. 97=MgO 97% min.

ANSHAN HAIMAG INTERNATIONAL TRADE CO., LTD.