Method for manufacturing a cement clinker, and cement clinker manufacturing facility
US8647113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2009 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Dec 16, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/121
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a cement clinker includes a rotary furnace, a cyclone preheater receiving the fumes from said rotary furnace, an air blowing clinker cooler, and at least one heat exchanger, referred to as a first heat exchanger. The raw materials are preheated and decarbonated in said cyclone preheater. The clinker is cooled in said clinker cooler. A first portion of the hot air generated by said clinker cooler, or so-called secondary air, is directed to the rotary furnace to be used as combustion air. A second portion of the hot air generated, or so-called tertiary air, is directed and carried separately from the first portion to a place in the facility where fuel is burned. A third portion of hot air generated in said clinker cooler, or so-called excess air, is carried into at least said first heat exchanger for the purpose of recovering power to produce electricity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.