แมกนีเซียม แคลเซียม เหล็ก มวลกระแทกแห้ง

Magnesium-calcium-iron dry ramming mass material is a dry ramming refractory material mainly composed of CaO, มก, and Fe₂อ₃, and generally contains a small amount of Al₂อ₃ and SiO₂. It is made through high-temperature sintering and dry ramming. It has high strength, acid slag resistance, and service temperature, and is widely used in heat preservation and fire-resistant protection of various high-temperature equipment.

Magnesium calcium iron dry ramming mass details

รายการ		ดัชนี
		MGT-1	MGT-2	MGT-3	MGT-4
มก %		≥78	≥81	≥82	≥85
แคลเซียมโอ %		12~15	6~9	8~11	6~8
เฟ2O3 %		4~5	5~9	3~5	4~5
SiO2 %		≤1.3	≤1.5	≤1.1	≤1.3
อัล2O3 %		≤0.6	≤0.6	≤0.6	≤0.6
Grain size composition mm		0~6	0~6	0~6	0~6
Bonding Method		Ceramic Bonded	Ceramic Bonded	Ceramic Bonded	Ceramic Bonded
Fired Cold Crush Strength MPa	1300℃×3ชม	≥10	≥10	≥8	≥10
	1600℃×3ชม	≥30	≥30	≥30	≥30
Permanent Linear Change%	1300℃×3ชม	-0.2--0.5	-0.2--0.5	-0.2--0.5	-0.2--0.5
	1600℃×3ชม	-1.5~-2.5	-2.0~-3.0	-0.1--0.2	-1.5~-2.5
Particle bulk density,กรัม/ซม3		≥3.25	≥3.25	≥3.25	≥3.25
การใช้งาน		Electric steelmaking furnace	Electric steelmaking furnace	Electric steelmaking furnace	Ferroalloy electric furnace

What is dry ramming mass?

Dry ramming mass is a kind of amorphous refractory material, which adopts a vibration method without adding water or liquid binder. Under the action of vibration, the material can form a dense and uniform whole, and the strength will be generated by the thermosetting binder or ceramic sintering agent when heated. The dry vibrating material is composed of refractory aggregate, powder, sintering agent, และส่วนผสม.

Magnesium-calcium-iron ramming material production process

Mix natural magnesite, dolomite, lightly burnt magnesia, or other raw materials containing calcium oxide and raw materials containing ferric oxide in a certain proportion, after fine grinding, ball pressing, and high temperature in a shaft kiln or tunnel kiln calcined.