US Patent 9862026 Method of forming transfer well

The invention relates to a method for forming a transfer chamber inside a cavity of, or next to, a vessel used to retain molten metal. A form is positioned in or next to the vessel, wherein the form defines the transfer chamber. Refractory material is placed into the form, and an opening is left beneath the transfer chamber wherein molten metal can flow into the opening. The transfer chamber is formed such that at least one chamber wall of the transfer chamber is part of at least one outer wall of the vessel, and at least one chamber wall is inside the vessel cavity and is not an outer wall of the vessel. The transfer chamber is formed with an uptake section, a top surface with an opening, and an outlet. The method may also include placing brackets into position and positioning a molten metal pump in the transfer chamber.