Mgo-Cao refractories

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　　　Raw flint clay

　　　Calcined flint clay

　　　Elrctrically fused magnesia

　　　Magnesia bricks

　　　Mgo-Cao refractories

　　　Magnesium ingot

　　　Mgo-c bricks

　　　Unshaped refractories

　　　Magnesia-chrome refractories

　　　Mgo-Al2o3 refractories

　　　Scmi-rebonded
　　　magnesia-chrome bricks

　　　Mgo-Al2O3 refractories

　　　Black fused alumina

　　　Brown fused aluminium

　　　Dead burned magnesite

　　　Calined magnesite

Home >Refractory materials > Mgo-Cao refractories


	Mgo-Cao refractories

MgO-CaO bricks are made by the process of the two-step burning of a dolomite, dolo-mitic sand and high quality magnesite (sintered or fused) mixture. It is shaped with high pressure, burned at high temperature, passed through pitch of paraffin impregnation under vacuum. They have very good high temperature perforemance and resistance to slag, and are applicable to the refining units such as AOD furmace,cement kiln,safety lining and bottom of converter for steel making and ladle,etc---

Sort	MgO-CaO Bricks
Brand Specification	QMG 15A	QMG 15B	QMG 20A	QMG 20B	QMG 25A	QMG 25B	QMG 30A	QMG 30B	QMG 40A	QMG 40B
CaO % >	13-17	13-17	18-22	18-22	23-27	23-27	28-32	28-32	38-42	38-42
∑(A+F+S) % ≤	3	4	3	4	3	4	4	4	3	4
Apparent Porosity%≤	S	8	8	8	8	8	8	S	S	8
Cold Crushing Strength Mpa≥	55	50	55	50	55	50	55	50	55	50
Refractoriness Under Load ^oC ≥	1700	1681	1700	1680	1700	1680	1700	1680	1700	1680

MgO-CaO clinker is made by calcination, briquetting and high temperature firing, taking high quality dolomite (impurity content <1 %) and magnesite as raw materials. MgO/CaO ratio is chosen for the production of MgO-CaO bricks and unshaped refractories.

Sort	MgO-CaO Clinker
Specification	QMGS 15	>QMGS 20	QMGS 25	QMGS 30	QMCS 35	QMGS 40	QMCS 45	QMGS 50
CaO % ≥	15	20	25	30	35	40	45	50
MgO % ≥	80	75	70	65	60	55	50	45
∑(A+F+S) % ≤	2.8	2.8	<2.8	2.8	2.8	2.8	2.8	<2.8
Bulk Density/cm³ ≥	3.2	3.2	3.2	3.2	3.2	3.2	>3.2	<3.2