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Document ID (ISN)31297
CIS number 79-693
ISSN - Serial title 0026-5160 - American Mining Congress Journal
Year 1978
Convention or series no.
Author(s) Hoelter H.
Title Underground use of dust scrubbers.
Bibliographic information Mar. 1978, Vol.64, No.3, p.46-49. Illus.
Abstract This article surveys recent developments in wet dust collectors and a new compact dry dust collector for use in underground coal mines. The aspects of efficiency of removal of dust-laden air from the face area are studied, comparing conditions in the USA and in Europe. The article considers the use of a dust collecting enclosure or hood on a rotary crusher and on a conveyor belt transfer point and describes a dust collector arrangement for a tunnel boring machine. The inferiority of dry collectors (filter and cyclone types) underground is emphasised and the test findings on a wet dust collector recently developed in West Germany are given, stressing the adjuvant role of turbulence in the collector in the wetting of particles and illustrating the principle of a horizontal centrifugal separator for separating dust-laden micro-droplets from the air flow. The author claims that high-pressure wet collector systems have 99.99% efficiency. A prototype dry dust collector with a specially impregnated tough filter fabric, currently being tested, is described.
Descriptors (primary) airborne dust; coal mining; dust collectors; local exhaust
Descriptors (secondary) centrifugal dust collectors; description of equipment; collection efficiency; wet dust collectors; filter dust collectors
Document type -
Subject(s) Dust, aerosols and related diseases
Broad subject area(s)
Browse category(ies) Mining and quarrying
Ventilation