Scum adsorbing member, twin roll continuous casting device, and method of producing slab

A twin roll continuous casting device comprising:

• a molten metal storage section including a pair of rotatable cooling rolls that rotate and a pair of side weirs;
• and
• a scum adsorbing member provided in a twin roll continuous casting device which produces a slab by supplying a molten metal to the molten metal storage section formed by the pair of rotatable cooling rolls and the pair of side weirs, and forming and growing a solidified shell on each circumferential surface of the pair of cooling rolls, so that a part of the scum adsorbing member is immersed in the molten metal storage section, comprising:
• a refractory containing a refractory metal oxide,
• wherein the refractory metal oxide is, as a chemical composition, Al2O3 and at least one, or two or more selected from the group consisting of ZrO2, MgO, SiO2, and CaO·6Al2O3,
• the scum adsorbing member has 15% by volume or more and 70% by volume or less of pores, wherein
• the slab is produced by supplying the molten metal to the molten metal storage section and forming and growing the solidified shell on each circumferential surface of the pair of cooling rolls,
• the scum adsorbing member is attached to a reinforcing member,
• the scum adsorbing member includes a porous sheet including a ceramic fiber, and
• the porous sheet is attached to both sides of the reinforcing member.

A method of producing a slab, the method comprising:

• supplying a molten metal to a molten metal storage section including a pair of rotatable cooling rolls that rotate and a pair of side weirs;
• and
• forming and growing a solidified shell on each circumferential surface of the pair of cooling rolls, wherein
• a scum adsorbing member provided in a twin roll continuous casting device which produces the slab by supplying the molten metal to the molten metal storage section formed by the pair of rotatable cooling rolls and the pair of side weirs, and forming and growing the solidified shell on each circumferential surface of the pair of cooling rolls, so that a part of the scum adsorbing member is immersed in the molten metal storage section, comprising:
• a refractory containing a refractory metal oxide,
• wherein the refractory metal oxide is, as a chemical composition, Al2O3 and at least one, or two or more selected from the group consisting of ZrO2, MgO, SiO2, and CaO·6Al2O3,
• the scum adsorbing member has 15% by volume or more and 70% by volume or less of pores,
• the scum adsorbing member is attached to a reinforcing member,
• the scum adsorbing member includes a porous sheet including a ceramic fiber, and
• the porous sheet is attached to both sides of the reinforcing member.

A scum adsorbing member provided in a twin roll continuous casting device which produces a slab by supplying a molten metal to a molten metal storage section formed by a pair of rotatable cooling rolls and a pair of side weirs, and forming and growing a solidified shell on each circumferential surface of the pair of cooling rolls, so that a part of the scum adsorbing member is immersed in the molten metal storage section, comprising:

• a refractory containing a refractory metal oxide,
• wherein the refractory metal oxide is, as a chemical composition, Al2O3 and at least one, or two or more selected from the group consisting of ZrO2, MgO, SiO2, and CaO·6Al2O3,
• the scum adsorbing member has 15% by volume or more and 70% by volume or less of pores,
• the scum adsorbing member is attached to a reinforcing member,
• the scum adsorbing member includes a porous sheet including a ceramic fiber, and
• the porous sheet is wrapped around the reinforcing member.

A twin roll continuous casting device comprising:

• a molten metal storage section including a pair of rotatable cooling rolls that rotate and a pair of side weirs;
• and
• a scum adsorbing member provided in a twin roll continuous casting device which produces a slab by supplying a molten metal to the molten metal storage section formed by the pair of rotatable cooling rolls and the pair of side weirs, and forming and growing a solidified shell on each circumferential surface of the pair of cooling rolls, so that a part of the scum adsorbing member is immersed in the molten metal storage section, comprising:
• a refractory containing a refractory metal oxide,
• wherein the refractory metal oxide is, as a chemical composition, Al2O3 and at least one, or two or more selected from the group consisting of ZrO2, MgO, SiO2, and CaO·6Al2O3,
• the scum adsorbing member has 15% by volume or more and 70% by volume or less of pores, wherein
• the slab is produced by supplying the molten metal to the molten metal storage section and forming and growing the solidified shell on each circumferential surface of the pair of cooling rolls,
• the scum adsorbing member is attached to a reinforcing member,
• the scum adsorbing member includes a porous sheet including a ceramic fiber, and
• the porous sheet is wrapped around the reinforcing member.

A method of producing a slab, the method comprising:

• supplying a molten metal to a molten metal storage section including a pair of rotatable cooling rolls that rotate and a pair of side weirs;
• and
• forming and growing a solidified shell on each circumferential surface of the pair of cooling rolls, wherein
• a scum adsorbing member provided in a twin roll continuous casting device which produces the slab by supplying the molten metal to the molten metal storage section formed by the pair of rotatable cooling rolls and the pair of side weirs, and forming and growing the solidified shell on each circumferential surface of the pair of cooling rolls, so that a part of the scum adsorbing member is immersed in the molten metal storage section, comprising:
• a refractory containing a refractory metal oxide,
• wherein the refractory metal oxide is, as a chemical composition, Al2O3 and at least one, or two or more selected from the group consisting of ZrO2, MgO, SiO2, and CaO·6Al2O3,
• the scum adsorbing member has 15% by volume or more and 70% by volume or less of pores,
• the scum adsorbing member is attached to a reinforcing member,
• the scum adsorbing member includes a porous sheet including a ceramic fiber, and
• the porous sheet is wrapped around the reinforcing member.