Molten metal dosing furnace with metal treatment and level control and method
US6500228B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jun 11, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2003/0054
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A dosing furnace (10) with metal treatment and level control includes a holding chamber (12) for containing a supply of molten metal (50), a pump (22) connected to the holding chamber (12), a molten metal treatment chamber (16, 18) located at an outlet (26) of the pump (22), and a dosing chamber (40) located downstream and in fluid communication with the molten metal treatment chamber (16, 18). A molten metal level sensor (56) is located in the dosing chamber (40). The pump (22) is a variable speed pump having a pump inlet (24) connected to the holding chamber (12) and configured to pump the molten metal (50) through the dosing furnace (10) during operation. The molten metal level sensor (56) is connected to the pump (22) for providing a pump speed control signal to the pump (22). The molten metal level sensor (56) is configured to monitor the level of the molten metal (50) in the dosing chamber (40) and maintain a preset level of the molten metal (50) in the dosing chamber (40) by controlling the speed of the pump (22) with the pump speed control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.