Chemical News and Journal of Industrial Science, Tomy 127-128Chemical news office., 1923 |
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Strona 22
... concentrates are removed and passed over grease tables to which the dia- monds adhere while the other minerals are washed off . The stones are said to be mostly small , and to vary in colour from white to yellow and brown , some very ...
... concentrates are removed and passed over grease tables to which the dia- monds adhere while the other minerals are washed off . The stones are said to be mostly small , and to vary in colour from white to yellow and brown , some very ...
Strona 33
... concentrates in the mother - liquor . The efficiency of this method is shown by the following data : - 1000 grams of K , ZrF ,, containing 6 per cent . of K2HfF ,, were crystallised from a 10 per cent . HF solution . After repeating ...
... concentrates in the mother - liquor . The efficiency of this method is shown by the following data : - 1000 grams of K , ZrF ,, containing 6 per cent . of K2HfF ,, were crystallised from a 10 per cent . HF solution . After repeating ...
Strona 103
... concentrate obtained by jig- ging the crushed ore , in which all of them are probably represented , showed : - PbO 51.81 per cent . ZnO = 18.06 CuO 1.10 V20 , = 20.60 PO = 0.08 99 The writer's thanks are due to Dr. F. E. Wright and ...
... concentrate obtained by jig- ging the crushed ore , in which all of them are probably represented , showed : - PbO 51.81 per cent . ZnO = 18.06 CuO 1.10 V20 , = 20.60 PO = 0.08 99 The writer's thanks are due to Dr. F. E. Wright and ...
Strona 140
... concentrate bearing the mesothorium and radium , the emanation was separated by boiling suit- able samples of these materials with con- centrated sulphuric acid , collecting the emanation thus liberated quantitatively , and measuring it ...
... concentrate bearing the mesothorium and radium , the emanation was separated by boiling suit- able samples of these materials with con- centrated sulphuric acid , collecting the emanation thus liberated quantitatively , and measuring it ...
Strona 141
... concentrate . In later runs , it was found that the addition of one - fifth of 1 per cent . of barium chloride crystals to the ore charge was sufficient to protect the mesothorium . The crude concentrate ob- tained when the smaller ...
... concentrate . In later runs , it was found that the addition of one - fifth of 1 per cent . of barium chloride crystals to the ore charge was sufficient to protect the mesothorium . The crude concentrate ob- tained when the smaller ...
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