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Light-weight spray coating for tundish

ZQT-M70 series of light spray coating, made of high-quality magnesia and high-quality forsterite and other raw materials. The product does not contain sulfur, phosphorus and other elements, does not pollute the molten steel, and has the advantages of good heat preservation and long service life.

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Refractory materials for the iron and steel industry

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Product Introduction

ZQT-M85 series of light spray coating, using high-quality magnesia as raw material, adding binder, plasticizer and explosion-proof agent mixed. The product has excellent construction performance, good thermal insulation performance, and has various functions such as purifying molten steel. It is mainly suitable for the pouring production of long-life and clean steel.

Brand Index		HT-ZQT-M85	HT-ZQT-M70
MgO(%) ≥		80	60
SiO₂ (%) ≤		10	30
Bulk density B · D(g/cm³)	110 ℃× 16h	1.5±0.3	1.5±0.3
Compressive strength C · C · S(MPa)≥	110 ℃× 16h	1.0	1.0
Compressive strength C · C · S(MPa)≥	1500 ℃× 3h	2.5	2.5
Change of heating permanent line P · L · C(%)	1100 ℃× 3h	±0.5	±0.5
Change of heating permanent line P · L · C(%)	1500 ℃× 3h	-3.5～0	-3.5～0
Thermal conductivity T · C [W/(m · K)]≤ 500 ℃		0.60	0.55
Construction reference water addition (%) Reference water addition amount during construction		20±2.5	20±2.5