Method for heating powder material and apparatus for carrying out said method
US4276020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jul 16, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/121
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for heating powder material comprising the steps of allowing hot gas from a plurality of hot gas sources separate from each other to flow separately through a plurality of hot gas passages which include a plurality of dust collectors and ducts for connection between said dust collectors, separately charging raw material to be heated through the each duct leading to the dust collector located in the uppermost part of said respective hot gas passages, then uniting the charged powder material, then alternately wandering the united powder material from one hot gas passage to the other hot gas passage, thereby the united powder material is heated by heat exchanging with the respective hot gas streams, and finally discharging the heated powder material through the duct located below the lowermost dust collector. An apparatus is provided for carrying out the aforesaid method comprising a plurality of hot gas passages through which hot gas streams coming from a plurality of hot gas sources separate from each other flow, said hot gas passages consisting of dust collectors and ducts for connection between said dust collectors, raw material ducts for connection of the dust collector …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.