A Text-book of Assaying: For the Use of Those Connected with Mines |
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Page x
... igniting CHAPTER IV . VOLUMETRIC ASSAYS . Titrometric assays ( a ) Standard solutions ( b ) Standardising ( c ) Methods of working ( d ) Indirect titration Colorimetric assays . Gasometric assays CHAPTER V. WEIGHING AND MEASURING ...
... igniting CHAPTER IV . VOLUMETRIC ASSAYS . Titrometric assays ( a ) Standard solutions ( b ) Standardising ( c ) Methods of working ( d ) Indirect titration Colorimetric assays . Gasometric assays CHAPTER V. WEIGHING AND MEASURING ...
Page 25
... ignites and sets fire to the coke , which of itself does not kindle easily . In commencing work , add ( if necessary ) fresh coke , and mix well ; make hollows , and into these put old crucibles ; pack around with coke , so that the ...
... ignites and sets fire to the coke , which of itself does not kindle easily . In commencing work , add ( if necessary ) fresh coke , and mix well ; make hollows , and into these put old crucibles ; pack around with coke , so that the ...
Page 29
... ignited . The amount of apparatus employed should be as little as is feasible . The assay should be carried out as much as possible in the same flask . The bench must be clean , and altogether free from apparatus not in actual use ...
... ignited . The amount of apparatus employed should be as little as is feasible . The assay should be carried out as much as possible in the same flask . The bench must be clean , and altogether free from apparatus not in actual use ...
Page 32
... Igniting . - Precipitates , as a rule , require drying before being ignited . With small precipitates the filter - paper may be opened out , and placed on a warm asbestos slab till dry ; or the funnel and the filter with the precipitate ...
... Igniting . - Precipitates , as a rule , require drying before being ignited . With small precipitates the filter - paper may be opened out , and placed on a warm asbestos slab till dry ; or the funnel and the filter with the precipitate ...
Page 33
... ignited will absorb moisture , and hot bodies placed in the balance - pan will disturb the equilibrium and show false results . Compounds that absorb moisture must be weighed quickly ; they should , therefore , be C weighed in covered ...
... ignited will absorb moisture , and hot bodies placed in the balance - pan will disturb the equilibrium and show false results . Compounds that absorb moisture must be weighed quickly ; they should , therefore , be C weighed in covered ...
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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