Sliding closure unit with easily replaceable lower stationary refractory plate
US4650101A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sliding closure unit includes an upper stationary refractory plate to be mounted on a metallurgical vessel, a movable refractory plate sealed against the upper stationary refractory plate, a slide unit for moving the movable refractory plate in a direction of movement between an open position with discharge openings in the movable refractory plate and the upper stationary refractory plate in alignment and a closed position with the discharge openings out of alignment, a lower stationary refractory plate mounted beneath the movable refractory plate, and tensioning devices for pressing the lower stationary refractory plate against the movable refractory plate. Guide members are provided for relieving the pressure of the tensioning devices on the lower stationary refractory plate upon movement of the movable refractory plate to the closed position, thereby enabling replacement of the lower stationary refractory plate. The guide members are provided on the slide unit and extend in the direction of movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.