Patent · US Active

Method and apparatus for detaching frozen charge from a tube mill

US8662428B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Robert Keller · Bellaire, US
Patrick Meier · Wettswil, CH

Key dates

Filing date	Jul 23, 2012
Grant date	Mar 4, 2014
Priority date	—
Expiry date	Jul 23, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C25/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and associated apparatus for detaching a frozen charge from an inner wall of a grinding pipe of a tube mill such as is used for grinding. The method includes controlling a driving device of the grinding pipe to detach a frozen charge from an inner wall of the grinding pipe, which driving device is operable to apply a driving torque to the grinding pipe. Controlling the driving device includes varying the driving torque applied to the grinding pipe around a predetermined reference level.

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