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The Iron Age 1889-04-25: Vol 43

1889 Reed Business Information US

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‘THE THURSDAY, APRIL 25, 1889. bs 9 IRON AGE _—_—A-New Abmminium Process. London Industries says that ‘‘in the course of a discussion upon a paper read by Mr. W. Anderson, before the Society of Arts last week, on the Deville-Castner aluminium process, Mr. Alexander Siemens described a new process invented by Mr. Grabau, who heated fluoride of alumizium in presence of sodium, The melted so- dium was poured into the vessel, which was hmed with cryolite, and cooled by the sulphate of sodium and left the aluminium fluoride ready to be reduced. The advantages of this process were that all the materials were treated at a com- paratively low temperature, about 900 Celsius. The vessel in which the alumin- ium fluoride was heated, as well as the vessel in which the reaction took place, was lined with cryolite, so that there was no danger of impurities being incorporated into thealuminium. The low temperature was very much easier managed than the MT Balanced Compound fEngine. a The Jonson patent balanced compound engine, of which we herewith present illus- | trations, is manufactured by the Jonson | Foundcy and Machine Company, of New | York. This engine is of the trunk type | and consists v…

Citation

The Iron Age 1889-04-25: Vol 43. Reed Business Information US. 1889.