Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 4
... materials uniform in composition so that experiments could be repeated under like conditions , I obtained some time ... material was massive tantalite , partly from Greenbushes , West Australia , and partly from the Northern Territories ...
... materials uniform in composition so that experiments could be repeated under like conditions , I obtained some time ... material was massive tantalite , partly from Greenbushes , West Australia , and partly from the Northern Territories ...
Strona 25
... material appeared to be very free from foreign matter , when they were crushed they disclosed thin inclusions of mica and other silicates . These were picked out as much as possible , and the minerals were then ground so that they would ...
... material appeared to be very free from foreign matter , when they were crushed they disclosed thin inclusions of mica and other silicates . These were picked out as much as possible , and the minerals were then ground so that they would ...
Strona 26
... material to the contents of the crucible . With some of the stanno- or stibio - tantalites which con- tain much tin or antimony it may be advisable to add some black flux prepared from cream of tartar or similar material to the mixture ...
... material to the contents of the crucible . With some of the stanno- or stibio - tantalites which con- tain much tin or antimony it may be advisable to add some black flux prepared from cream of tartar or similar material to the mixture ...
Strona 27
... material was zirconia . If this is all zirconia it would amount to 151 per cent on the columbite . The matter which was brought into solu- tion on the fusion with potassium carbonate was found to be a mixture of tantalic acid , niobic ...
... material was zirconia . If this is all zirconia it would amount to 151 per cent on the columbite . The matter which was brought into solu- tion on the fusion with potassium carbonate was found to be a mixture of tantalic acid , niobic ...
Strona 31
... material ( in my experiments about o5 grm . ) must be vaporised , as scandium mostly occurs only in extremely small amounts in the minerals , and only when large amounts of material are used are its spectral lines visible ( in the ...
... material ( in my experiments about o5 grm . ) must be vaporised , as scandium mostly occurs only in extremely small amounts in the minerals , and only when large amounts of material are used are its spectral lines visible ( in the ...
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acetic action alcohol alkali ammonia ammonium amount analysis antimony apparatus aqueous atomic weight B.Sc Bakelite barium boiling calcium calculated carbon cent Chem chemical Chemistry chloride colour columbite compounds concentration condensation containing copper crucible crystallisation decomposed derivatives determined dilute dioxide dissolved distilled effect electric electrodes electrolytic elements equation ether ethyl evaporated experiments extract filtered flask flour formed formula gases gives graphite grms guncotton heated hydrate hydrochloric acid hydrofluoric acid hydrogen hydroxide investigation iodine iron laboratory liquid metal method mgrm mineral mixture molecular molecules nitrate nitric acid nitrogen nitroglycerin observed obtained ordinary osmotic pressure oxalic oxalic acid oxide oxidised oxygen paper phenol platinum potassium precipitate prepared present Prof pure quantity radio-active radium reaction residue salt scandium shown silver Society sodium soluble solution solvent substance sulphate sulphide sulphuric acid tantalite tantalum tellurium temperature tion tube vapour volume yield