Process and apparatus for charging a shaft furnace
US4767258A · kind A · utility
Inventors
Key dates
| Filing date | May 7, 1986 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | May 7, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2003/0007
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for charging a shaft furnace is presented which ensures the vertical and symmetrical fall of charging material from a hopper onto a distribution spout. The discharge valve of the hopper and the valve of a chamber feeding material to the hopper are regulated in such a way as to form a barrage in the base of the hopper. To control the formation of this barrage, and ensure that it will be maintained throughout a charging phase, the hopper and the chamber are weighed separately, signals being produced for the control of dosing valves. In a preferred embodiment of an apparatus for performing this process, the hopper is rotated in order to reduce segregation of the charge material particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.