Patent · US Expired

Method and apparatus for combined grinding of at least two materials of differing grindability

US5676317A · kind A · utility

0Cited by

6References

5Claims

0Family size

Assignee

Krupp Polysius AG · DE

Inventors

Norbert Patzelt · Beckum, DE
Gotthardt Blasczyk · Beckum, DE

Key dates

Filing date	Nov 13, 1995
Grant date	Oct 14, 1997
Priority date	—
Expiry date	Nov 13, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method as well as to apparatus for combined grinding of at least two materials of differing grindability, such as clinker and limestone, wherein the material which is more difficult to grind is pre-crushed to a Blaine fineness of grinding of at least 700 cm.sup.2 /g and there-after is further ground together with the other material to produce the finished material.

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