Tundish dry material with molten steel cleaning function

• Main Authors: QIN SHIMIN, JIANG XINGPING, ZHANG HONGLEI, XU GUOTAO, XU ZHIHAO, ZHOU WANGZHI, LIU LI
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• Subjects: ARTIFICIAL STONE; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention discloses a tundish dry material with a molten steel cleaning function. The tundish dry material comprises the following components in percentage by mass: 5-15% of magnesia-calcium sand aggregate with the particle size of 5-3mm; 5-15% of magnesia-calcium sand aggregate with a particle size of 3-1 mm; 3-7% of magnesia-calcium sand aggregate with the particle size of less than 1mm; 15-20% of magnesia-calcium sand powder with a particle size of less than 0.075 mm; 5-15% of spinel aggregate with a particle size of 5-3 mm; 5-15% of spinel aggregate with a particle size of 3-1 mm; 3-7% of spinel aggregate with a particle size of less than 1 mm; 15-20% of spinel powder with a particle size of less than 0.075 mm; 8-10% of a burning promoter; 8-10% of a binding agent; the invention not only can avoid the occurrence of'hydrogen increase 'and'recarburization' phenomena, but also has the function of cleaning molten steel, and has the characteristics of strong erosion resistance, long service life and conven