Slag control method and apparatus

A method for separating molten metal and slag comprising the steps of:

• (a) providing a flow of molten metal and slag;
• (b) providing a movable vessel having a reservoir, said reservoir having a flow path therethrough, said flow path including a first chamber for receiving said flow and being configured for separating said molten metal and slag, said first chamber of said flow path being configured to direct flow rearwardly, said flow path including a second downstream chamber being configured to direct flow forwardly, said reservoir including a slag opening for discharge of said slag and a dam positioned at the end of said flow path, said dam including an opening proximate a bottom of said reservoir in operable communication with a passage, said passage including a weir and an outlet for said molten metal;
• (c) locating said vessel in a first position which (1) accepts said flow within said first chamber of said flow path, (2) separates said molten metal from said slag, and (3) enables said molten metal to flow under the influence of gravity along said flow path, through said dam opening, into said passage, generally upward along said weir and out of said molten metal outlet while said slag accumulates in said reservoir;
• and
• (d) collecting said molten metal from said molten metal outlet.

A method for separating molten metal and slag comprising the steps of:

• (a) providing a tiltable vessel having a reservoir;
• said reservoir including a flow path therethrough, said flow path including a first portion being configured to direct flow rearwardly, said flow path including a second downstream portion being configured to direct flow forwardly, a slag opening for discharge of said slag, and a dam positioned at the end of said flow path;
• said dam including an opening proximate a bottom of said reservoir in operable communication with a passage, said passage including a weir and an outlet for said molten metal;
• (b) locating said vessel in a first position which enables said molten metal to flow under the influence of gravity along said flow path, through said dam opening, into said passage, generally upward along said weir and out of said outlet while enabling said slag to accumulate in said reservoir;
• (c) providing a flow of molten metal and slag into said reservoir;
• and
• (d) moving said vessel to a second heavy slag discharge position upon accumulation of a desired amount of said slag in said reservoir where said slag rapidly can be discharged through said slag opening while said molten metal continues to flow out of said outlet.

A method for separating molten metal and slag comprising the steps of:

• (a) receiving a flow of molten metal and slag into a vessel;
• (b) directing said molten metal and slag in the vessel from a relatively narrow portion of said vessel into a relatively wide portion of said vessel so as to slow the velocity of said flow and permit pooling of said molten metal and slag, said vessel defining a flow path, said flow path including a first portion being configured to direct flow rearwardly, said flow path including a second downstream portion being configured to direct flow forwardly;
• (c) providing a slag opening adjacent said wide portion for discharge of floating slag;
• and
• (d) providing a dam downstream of said wide portion for retaining said slag in said wide portion and permitting discharge of molten metal under said dam and out of said vessel.

A method for separating molten metal and slag comprising the steps of:

• (a) receiving a turbulent flow of molten metal and slag into tiltable vessel, said vessel defining a flow path, said flow path including a first portion being configured to direct flow rearwardly, said flow path including a second downstream portion being configured to direct flow forwardly;
• (b) reducing said turbulent flow to a non-turbulent flow in said vessel so as to permit separation of said molten metal and slag wherein said slag floats on top of said molten metal while said vessel tilts for discharge of said molten metal;
• (c) providing a slag opening in the perimeter of said vessel adjacent said non-turbulent flow for discharge of floating slag;
• and
• (d) providing a dam in said vessel for retaining said slag in said vessel and permitting discharge of molten metal under said dam and out of said vessel.

A method for separating molten metal and slag comprising the steps of:

• (a) receiving a flow of molten metal and slag into a tilting vessel;
• (b) directing said flow of molten metal and slag through a U-shaped reservoir having an upstream chamber and a downstream chamber, said upstream chamber being configured to permit pooling of said molten metal and slag so as permit separation of said molten metal and slag wherein said slag floats on top of said molten metal while said vessel is tilted;
• (c) providing a slag opening adjacent said upstream chamber for discharge of floating slag;
• and
• (d) providing a dam in said downstream chamber for retaining said slag in said vessel and permitting discharge of molten metal under said dam and out of said vessel.

An apparatus for separating molten metal and slag comprising:

• a tilting vessel having an open top, said vessel having a first chamber and a second chamber, said first chamber being configured for receiving a flow of molten metal and slag, said first chamber having a relatively narrow section and a relatively wide section, said second chamber being adjacent said wide section;
• a slag opening defined in said vessel and adjacent said wide section for discharge of floating slag;
• and
• a dam at a downstream end of said second chamber for retaining said slag in said vessel and permitting discharge of molten metal under said dam and out of said vessel.

An apparatus for separating molten metal and slag comprising:

• a tilting vessel having an open top, said vessel having a first chamber and a second chamber connected to each other, said first chamber and said second chamber defining a U-shaped flow path, said first chamber being configured to receive a flow of molten metal and slag and to permit pooling and separation of said molten metal and slag wherein said slag floats on top of said molten metal;
• a slag opening defined in a side of said vessel for discharge of floating slag;
• and
• a dam adjacent the downstream end of said second chamber for retaining said slag in said vessel and permitting discharge of molten metal under said dam and out of said vessel.

An apparatus for separating molten metal and slag comprising:

• a tilting vessel having an open top, said vessel having a first chamber and a second chamber, said chambers being laterally offset and being separated by an intermediate wall, said intermediate wall being oriented at an angle whereby each chamber has a relatively narrow section and a relatively wide section and each of said chambers is tapered, said vessel defining a flow path from said first chamber to said second chamber;
• a slag opening defined in a side of said vessel for discharge of floating slag;
• and
• a dam adjacent said second chamber for retaining said slag in said vessel and permitting discharge of molten metal under said dam and out of said vessel.