Machinery for metalliferous mines - a practical treatise for mining engineers, metallurgists and managers of mines (1902) (14743185606)

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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tube,which also have a water circulation of their own. The ore to be cooledis fed at one end and as the cooler revolves gradually travels downward,towards the discharge end, where it is delivered, by means of a series ofsmall cast iron doors, shown in the illustration, either to a car or hopper,or to such other conveying mechanism as may be provided in eachparticular case. The cold water is admitted at the discharge end of the cooler andflows towards the feed end, being finally returned in four pipes to thedischarge end, but above and out of the way of the ore. The dischargeend of the cooler is therefore as cool as the in-coming water, while thefeed end is subjected to the heat of the ore bearing from 800° to 1000°Fahr. The unequal expansion must therefore be seen to, which is doneby inserting a Morrison corrugated flue in the inner shell. The innerboiler tubes with their heads are also free to expand independently. The shell is provided with a suitable number of hand holes, and all
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ARGALL ORE COOLER, 437 tubes are so arranged as to be accessible and easy to replace in caseof repairs. The track bands are made of the best quality of open hearth steelcastings, turned true on the outside, and supported by the carrying truckwheels, which are made of a special mixture of very hard iron. The carrying frame is of iron and steel construction throughout,and the driving mechanism, having an equalising gear, partakes of thesame advantages as the driving mechanism supplied for the Argall dryerand roaster. The advantages of a cooler of this kind over the old-fashioned coolingfloor are very obvious. It is continuous in its action, requires but veryhttle room in comparison with that of a large cooling floor, and dispenseswith all of the hand-labour necessary for spreading the material overa large flat area. The capacity of the machine is about 300 tons per24 hours, and its total shipping weight approximately 37,000 lb. I had an opportunity in October, 1900, of visiting the work