Patent · US Expired

Pressure/belt filter, particularly for dewatering fine coal

US4477358A · kind A · utility

14Cited by

5References

21Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Siegfried Heintges · Haltern, DE
Werner Strauss · Kehl, DE
Hannes Schulze Horn · Gladbeck, DE

Key dates

Filing date	Mar 11, 1983
Grant date	Oct 16, 1984
Priority date	—
Expiry date	Mar 11, 2003

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/34
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and mechanism for dewatering fine coal or the like by a filtering operation including a horizontally disposed cylindrical housing defining a pressure chamber within, an intermittently movable filter belt wrapping support rolls for the belt at each end with the rolls having driving and braking devices, movable sealing devices positioned at openings to the chamber to seal the belt where it extends into and out of the chamber, a support for the belt with means for draining filtrate dewatered from the coal, and means to apply pressure to the chamber above the belt for dewatering the coal and for providing pressure beneath the support for the belt to balance forces within the housing.

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