Magnesium, siliceous dry material

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Metallurgical materials

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Therefore, it is very popular among users. The service life of magnesium dry material is more than 800 minutes, and the service life of magnesium calcium dry material is more than 600 minutes.

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Advantages of Weixiang tundish dry materials：

1. Steel burning time is long, the cost of refractory material per ton of steel is reduced.

2. The baking time is reduced and the production scheduling is convenient.

3. Significantly improved steel quality.

4. Good heat preservation effect, lower energy consumption.

5. Residual lining is easy to disassemble, and the life of permanent lining is improved.

6. Turnover speed of tundish is accelerated, and the number of spare packages is reduced.

Therefore, it is very popular among users. The service life of magnesium dry material is more than 800 minutes, and the service life of magnesium calcium dry material is more than 600 minutes.

Main physical and chemical indexes of magnesia and magnesia calcium series dry materials:

Material		Magnesia					Magnesia-calcium
Brand		ZW-G-70	ZW-G-80	ZW-G-82	ZW-G-85	ZW-G-88	ZW-ZT-C
Chemicalcomposition/ %,≥	MgO	70	80	82	85	90	75
Chemicalcomposition/ %,≥	CaO						10 ~20
Bulk density/g﹒cm-3	220℃´3h	1.8 ~ 2.2	2.1 ~ 2.2	2.1 ~ 2.3	2.1 ~ 2.4	2.1 ~ 2.4	2.0 ~ 2.2
Firing linear change/ %	1500℃	-2.5 ~ 0	-2.0 ~ 0	-2.5 ~ 0	-2.0 ~ 0	-1.5 ~ 0	-3.0 ~ 0
Crushing strength/ MPa,≥	200℃´3h	2	5	5	6	7	5
Crushing strength/ MPa,≥	1500℃	3	2	3	4	5	5