Calcining apparatus for powdery materials
US4548580A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 30, 1982 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | Nov 30, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B7/2058
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
There is here disclosed a calcining apparatus for a powdery material comprising a first preheating series composed of a calcining kiln and preheaters at a plurality of stages for heating the powdery material with an exhaust gas from the calcining kiln, a second preheating series composed of other preheaters at a plurality of stages for heating the powdery material with an exhaust gas from a rotary kiln, and a gas carrying pipe for connecting the first and second preheating series in the middle thereof, a flow path for the powdery material being adapted so that the powdery material fed to each series may be led into the rotary kiln via a combining duct disposed in front of the undermost preheaters in both the series and then via the undermost portions of both the series. Further, disclosed is a calcining apparatus for a powdery material in which a sub-calcining kiln and a calcining chamber are disposed on an exhaust gas pipe extending from a rotary kiln. Still further, disclosed is a calcining apparatus for a powdery material in which a calcining chamber is disposed, and a flow path through which the powdery material fed to first and second preheating series passes is provided with …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.