Chemical News and Journal of Industrial Science, Tomy 137-138Chemical news office., 1928 |
Z wnętrza książki
Wyniki 1 - 3 z 77
Strona 151
... mineral was mixed with cassi- terite which was unaffected by this treat- ment . The time of decomposition was about forty minutes . In order to properly adjust the acid con- centration for the precipitation of barium sulphate , pure ...
... mineral was mixed with cassi- terite which was unaffected by this treat- ment . The time of decomposition was about forty minutes . In order to properly adjust the acid con- centration for the precipitation of barium sulphate , pure ...
Strona 152
... Mineral . .2520 gr . .2512 99 .2616 99 .3024 Average 99 ZORGITE . Selenium . 3.09 per cent . 3.14 99 99 3.13 99 3.17 99 99 3.13 99 99 The mineral was heated at 200 ° C. for ten to fifteen minutes after which the tempera- ture was ...
... Mineral . .2520 gr . .2512 99 .2616 99 .3024 Average 99 ZORGITE . Selenium . 3.09 per cent . 3.14 99 99 3.13 99 3.17 99 99 3.13 99 99 The mineral was heated at 200 ° C. for ten to fifteen minutes after which the tempera- ture was ...
Strona 387
... Mineral . Sulphur . .3072 gm . .3008 gm . 21.71 per cent . 21.71 99 99 99 99 Average ......... 21.71 JAMESONITE . The conditions for the decomposition of this mineral were identical with those for tetrahedrite . Weight of Mineral ...
... Mineral . Sulphur . .3072 gm . .3008 gm . 21.71 per cent . 21.71 99 99 99 99 Average ......... 21.71 JAMESONITE . The conditions for the decomposition of this mineral were identical with those for tetrahedrite . Weight of Mineral ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acid action activation amount appears application Association atoms British carbon cent Chemical Chemistry coal Company complete containing continuous copper crystal determined direct effect electric electrons energy Engineering exist experiments fact field fuel further give given heat HOUSE hydrogen important increase industry Institute interest known less light Limited London manufacture Marks material matter means measured meeting ment metal method million Mines molecule nature observed obtained Office oxide oxygen particles Patents period plant positive possible practice prepared present pressure production Published radiation rays reaction recent referred Royal salt Society solution stars substances surface temperature theory tion tons Trade United University various volume waves whole X-ray