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 ben
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.
대표청구항▼
1. A method of forming a transfer well inside of a vessel for containing molten metal, the vessel having outer walls including side walls and a cavity inside the outer walls for retaining molten metal, the method comprising the steps of: (a) placing a form adjacent at least part of one outer wall of
1. A method of forming a transfer well inside of a vessel for containing molten metal, the vessel having outer walls including side walls and a cavity inside the outer walls for retaining molten metal, the method comprising the steps of: (a) placing a form adjacent at least part of one outer wall of the vessel, the form defining a transfer chamber, wherein the transfer chamber has: (i) a plurality of chamber walls, (ii) a top surface, (iii) an opening in the top surface, (iv) an uptake section in communication with the opening in the top surface, the uptake section configured to receive at least part of a rotor shaft, and having an entrance at its bottom, the entrance configured to at least partially receive a rotor and allow the rotor to rotate, and (v) an outlet above the entrance and in communication with the uptake section;(b) placing refractory material in the form to create the transfer chamber, wherein vessel outer wall adjacent the transfer well forms one of the plurality of chamber walls; and(c) leaving an opening beneath the transfer chamber, the opening in communication with the uptake section. 2. The method of claim 1 wherein the opening is directly beneath the entrance. 3. The method of claim 1 wherein the entrance is configured to have 1/32″ and ¼″ of clearance between it and the rotor. 4. The method of claim 1 that further includes the step of attaching one or more metal brackets to the top surface, the one or more brackets for supporting a molten metal pump. 5. The method of claim 1 that further includes the step of placing a molten metal pump into the transfer chamber. 6. The method of claim 5 that further includes the step of placing one or more brackets on the molten metal pump, the one or more brackets used to help support the molten metal pump in the transfer well. 7. The method of claim 4 that further includes the step of placing a molten metal pump into the transfer chamber and securing it to the one or more brackets. 8. The method of claim 6 wherein the one or more brackets on the molten metal pump are secured to the top surface of the transfer chamber. 9. The method of claim 6 wherein the one or more brackets are secured to one or more side walls of the vessel. 10. The method of claim 5 wherein the molten metal pump does not have support posts or a pump housing. 11. The method of claim 5 wherein the molten metal pump has a rotor that is positioned at least partially in the entrance. 12. The method of claim 6 wherein the molten metal pump has a superstructure and the brackets are placed on the superstructure. 13. The method of claim 9 wherein the molten metal pump has a superstructure and the one or more brackets are placed on the superstructure. 14. The method of claim 1 wherein the vessel includes a tap-out opening positioned lower than the entrance. 15. The method of claim 1 wherein the outlet is formed at least two feet above the entrance. 16. The method of claim 1 wherein the outlet is formed at least two feet above an inner bottom surface of the vessel. 17. The method of claim 1 wherein the opening has a cross-sectional area and the uptake section has a second cross-sectional area, the second cross-sectional area being larger than the cross-sectional area. 18. The method of claim 1 wherein the uptake section is cylindrical. 19. The method of claim 1 wherein the uptake section has a first vertical section with a first cross-sectional area and a second vertical section having a second cross-sectional area, the second cross-sectional area at the entrance, and the second cross-sectional area being smaller than the first cross-sectional area. 20. The method of claim 1 wherein the opening has a cross-sectional area and the uptake section has a second cross-sectional area, the second cross-sectional area being smaller than the cross-sectional area. 21. The method of claim 19 wherein the uptake section further includes a third vertical section having a third cross-sectional area, the third vertical section being between the first vertical section and the second vertical section, and the third cross-sectional area being smaller than the first cross-sectional area, but larger than the second cross-sectional area. 22. The method of claim 1 wherein the vessel has a first side wall and a second side wall opposite the first side wall, and that further comprises the step of placing one or more brackets for supporting a pump above the vessel, wherein the brackets extend from the first side wall to the second side wall, and each bracket is then connected to the first side wall and the second side wall. 23. The method of claim 1 that further includes the step of positioning a launder so that the launder is in communication with the outlet so that fluid exiting the outlet passes into the launder. 24. The method of claim 1 wherein the transfer chamber is formed so that it has three walls inside the cavity and has a fourth wall that is an outer wall of the vessel.
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