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Books Books 1 - 7 of 7 on ... slower it becomes, so that with a rather weak current, the last traces of nickel....  
" ... slower it becomes, so that with a rather weak current, the last traces of nickel are deposited only after long treatment. This peculiarity is particularly marked with cold solutions, and it is now generally recommended to heat the solution to 60... "
Qualitative analysis ; Quantitative analysis - Page 44
by International Correspondence Schools - 1905
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Transactions of the American Institute of Mining, Metallurgical ..., Volume 6

Metallurgy - 1879
...copper increases the speed of exhaustion. Scrap iron may be placed loosely in the porous vessel, and may be added from time to time to take the place of that which has been dissolved. It is necessary to remove portions of the solution of iron as it approaches...
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Transactions of the American Institute of Mining, Metallurgical ..., Volume 6

Metallurgy - 1879
...copper increases the speed of exhaustion. Scrap iron may be placed loosely in the porous vessel, and may be added from time to time to take the place of that which has been dissolved. It is necessary to remove portions of the solution of iron as it approaches...
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Lectures on mining delivered at the school of mines, Paris ...

J Callon, J. Callon (Jules Pierre) - 1886
...per 100 metres), a little more at the head, and a little less at the tail end. More mercury has to be added, from time to time, to take the place of that which is gradually carried downwards by gravity, owing to the capillary action of the pavement being...
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A Treatise on Chemistry and Chemical Analysis: Quantitative analysis

Chemistry - 1899
...generally recommended to heat the solution to 60 or 70 while passing the electric current through it. If the solution is thus heated, ammonia must be...case of copper. The nickel may be dissolved off a platinum electrode very readily by nitric acid, unless it is heated too highly in drying, in which...
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International Library of Technology: A Series of Textbooks for ..., Volume 17

Agriculture - 1902
...generally recommended to heat the solution to 60 or 70 while passing the electric current through it. If the solution is thus heated, ammonia must be...possible, as in the case of copper. The nickel may precipitate has settled, decant the clear liquid through a filter. Add hut water and a few drops of...
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International Library of Technology: A Series of ..., Volume 17, Part 2

Agriculture - 1906
...generally recommended to heat the solution to 60 or 70 while passing the electric current through it. If the solution is thus heated, ammonia must be...as possible, as in the case of copper. The nickel ma}be dissolved off a platinum electrode very readily by nitric acid, unless it is heated too highly...
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Bulletin of Pharmacy, Volume 34

Medical - 1920
...allowing the boiling mixture of oil and caustic potash to come to the point of dryness. Water should be added from time to time to take the place of that lost by evaporation, and, furthermore, the boiling should be kept up until thorough saponification...
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