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Tundish coating, phosphorus-free coating

Phosphorus-free coating is specially developed for special steel such as stainless steel. The product uses a unique combination system to effectively prevent the phosphorus impurity pollution caused by the coating in the use of molten steel.

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Refractory materials for the iron and steel industry

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Product Introduction

Compared with the traditional use of insulation board as tundish lining, tundish coating has the characteristics of simple construction, long service life, excellent slag erosion resistance, easy disintegration after use and no pollution of molten steel. At present, it has become the preferred tundish lining material for most steel mills.

Tundish coating selection of high-quality magnesia, magnesia, dolomite, etc. as the main raw material, through the use of reasonable particle gradation, binding agent, plasticizer, water reducing agent and explosion-proof agent such as carefully developed.

Brand Index		magnesium coating		magnesium calcium coating	forsterite coating
Brand Index		HT-GS1(GS22)	HT-GSU	HT-GSC	HT-GS1-MS
MgO(%)		70	80	65	70
High (%) ≤		2.5	2	10
SiO₂ (%) ≤		10	8	8	25
Bulk density B · D(g/cm³)	110 ℃× 16h		1		1.8
	110 ℃× 24h	2.0±0.2	2.1±0.2	1.8±0.2
	1500 ℃ × 3h				1.85
Compressive strength C · C · S(MPa) ≥	110 ℃ x16h				2
	110 ℃× 24h	2	2	3
	1500 ℃× 3h	4	6	6	4
Change of heating permanent line P · L · C(%)	1500 ℃ × 3h	-3.5～0	-3.5～0	-4.0～0	-3.0～0
Construction Reference Water Quantity Reference water addition amount during construction(%)		22.5±2.5	20.0±2.5	23±3.0	1
Grain size Granularity(mm)≤ 1				1	3