Patent · US Expired

Method and apparatus for manufacturing cement clinker

US4004938A · kind A · utility

4Cited by

1References

11Claims

0Family size

Assignees

Polysius AG
Rudolf Rohrbach

Inventors

Rudolf Rohrbach
Horst Ritzmann · Enniger, DE

Key dates

Filing date	Apr 21, 1975
Grant date	Jan 25, 1977
Priority date	—
Expiry date	Apr 21, 1995

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/125
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In the manufacture of cement clinker from limestone and clay components exhaust gases from a rotary kiln are delivered via a conduit to the final stage of a multiple stage cyclone preheater for the limestone. The limestone and low grade fuel are introduced to the conduit and calcined therein by a separate firing process immediately prior to the discharge of the calcined limestone to the kiln.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.