Process for producing cement clinker containing blast furnace slag
US5976243A · kind A · utility
14Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Undried blast furnace slag, for example, granulated blast furnace slag having a water content of 3 to 20, generally 5 to 15%, by weight, is introduced to hot clinker in a cooler downstream of a cement kiln; the water is volatilized or evaporated in the cooler to provide a cement clinker having an effective content of dried blast furnace slag free of water; this permits use of blast furnace slag in a blended cement without the need for separate special steps for drying the slag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.