A Text-book of Assaying: For the Use of Those Connected with Mines |
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Page 32
... drop , and two or three drops of nitric acid are then added . The crucible is placed on a pipe - stem ( fig . 21 ) , supported 32 TEXT - BOOK OF ASSAYING . (d) Drying and igniting.
... drop , and two or three drops of nitric acid are then added . The crucible is placed on a pipe - stem ( fig . 21 ) , supported 32 TEXT - BOOK OF ASSAYING . (d) Drying and igniting.
Page 42
... drops at fairly equal intervals distributed over a clean and dry white porcelain - plate : a drop or two of the solu- tion to be tested is then brought in contact with one of these and the effect noted . Another plan is to have thin ...
... drops at fairly equal intervals distributed over a clean and dry white porcelain - plate : a drop or two of the solu- tion to be tested is then brought in contact with one of these and the effect noted . Another plan is to have thin ...
Page 43
... drops until the colour change is got . ( 2 ) When an outside - indicator is used . - Pour the standard solution from a burette into the assay until 5 or 6 c.c. from the finishing - point ; then run in I c.c. at a time ( stirring and ...
... drops until the colour change is got . ( 2 ) When an outside - indicator is used . - Pour the standard solution from a burette into the assay until 5 or 6 c.c. from the finishing - point ; then run in I c.c. at a time ( stirring and ...
Page 51
... drop of varying size in the nozzle . Whatever method is adopted for removing this drop must be always adhered to . The most convenient form is the one last described , and the most useful sizes are 100 c.c. , 50 c.c. , 20 c.c. , 10 c.c. ...
... drop of varying size in the nozzle . Whatever method is adopted for removing this drop must be always adhered to . The most convenient form is the one last described , and the most useful sizes are 100 c.c. , 50 c.c. , 20 c.c. , 10 c.c. ...
Page 63
... of the com- mercial litmus in 100 c.c. of water on the water bath . After being allowed to settle , it is filtered and made just faintly red with acetic acid . Then there is added a drop or RE - AGENTS - SALTS , ETC. 63.
... of the com- mercial litmus in 100 c.c. of water on the water bath . After being allowed to settle , it is filtered and made just faintly red with acetic acid . Then there is added a drop or RE - AGENTS - SALTS , ETC. 63.
Other editions - View all
A Text Book of Assaying: For the Use of Those Connected with Mines Cornelius Beringer,John Jacob Beringer No preview available - 2016 |
A Text-Book of Assaying for the Use of Those Connected with Mines Cornelius Beringer,John Jacob Beringer No preview available - 2015 |
TEXT-BK OF ASSAYING FOR THE US Cornelius Beringer,John Jacob 1857-1915 Beringer No preview available - 2016 |
Common terms and phrases
20 grams acetic acid acid solution added alkaline alloy alumina ammonia ammonium antimony aqua regia arsenic baric chloride beaker bismuth boiling borax bulk c.c. of dilute c.c. of hydrochloric c.c. of nitric c.c. of water calculated carbonate cent chromate colour containing copper crucible cupel determined dilute ammonia dilute hydrochloric acid dioxide dish dissolved dried Effect of Varying excess ferric chloride ferric oxide ferrous filter filtrate flask fused fusion gives gold gram of copper grams grams of lead GRAVIMETRIC heat hydrate hydrochloric acid hydrogen ignited insoluble iodide iodine iron lime liquid litre magnesia manganese metal method milligrams mineral mixed multiplied nickel nitre nitric acid oxidising oxygen percentage permanganate phosphate phosphorus platinum potash potassium powdered precipitate present quantity residue salts sample separated silica silver slag soda sodic sodium acetate soluble standard solution substance sulphate sulphide sulphuric acid temperature titration tube uranium VOLUMETRIC washed weighed zinc
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