File:Machinery for metalliferous mines - a practical treatise for mining engineers, metallurgists and managers of mines (1902) (14579727657).jpg

Identifier: machineryformeta00davi (find matches)
Title: Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines
Year: 1902 (1900s)
Authors: Davies, E. Henry (Edward Henry)
Subjects: Mining machinery
Publisher: London : Crosby Lockwood New York : Van Nostrand
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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es are made of plate steel, and all the seams are butt andstrap jointed, the rivets being driven flat on the inside so as to facilitatethe introduction of the fire-clay tile lining of the tubes, which are nestedinside two cast steel track bands. At the upper end there is a cylindricalinlet shell which receives the raw ore and distributes it in thin layersinto the four tubes. The ore is thus brought into close contact with theflames, and is thoroughly and evenly roasted at a minimum expenditureof fuel. The furnace supplying heat to the roaster runs on rails, as shownat the lower end, the fire-box being portable with an underfeed stoker.The air chamber supplying the blast to the stoker is below the floor level. The two track bands rest on four rollers, which are driven by meansof the compensating gear mechanism shown in fig. 283A, thus equalisingany differences in the diameter of the tract bands or conveying rollers. Inthe old form of rotary furnace the uneven wear of one set of rollers
Text Appearing After Image:
ARGALL ROASTER

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