A Text-book of Assaying: For the Use of Those Connected with Mines |
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Page 5
... percentage of water present . Example : - Weight of dish + wolfram 99 dish 32.67 grms . 12.67 وو " 9 wolfram dish + wolfram dried 99 " " .. 29 water " " " " 20.CO وو · 32.67 30.15 99 99 . = 2.52 99 2.52 × 5 = 12.6 12.6 % There are other ...
... percentage of water present . Example : - Weight of dish + wolfram 99 dish 32.67 grms . 12.67 وو " 9 wolfram dish + wolfram dried 99 " " .. 29 water " " " " 20.CO وو · 32.67 30.15 99 99 . = 2.52 99 2.52 × 5 = 12.6 12.6 % There are other ...
Page 6
... percentage . The dried ore should be transferred to a weighing - tube ( fig . 3 ) , and reserved for the subsequent determinations . The weighing - tube with the ore must be marked , and kept in a desiccator . Most ores and inorganic ...
... percentage . The dried ore should be transferred to a weighing - tube ( fig . 3 ) , and reserved for the subsequent determinations . The weighing - tube with the ore must be marked , and kept in a desiccator . Most ores and inorganic ...
Page 7
... percentage or parts in a hundred , and to avoid a needlessly troublesome calculation it is well to take such a quantity of ore for each assay as by a simple multiplication will yield the percentage . In these calculations decimals are ...
... percentage or parts in a hundred , and to avoid a needlessly troublesome calculation it is well to take such a quantity of ore for each assay as by a simple multiplication will yield the percentage . In these calculations decimals are ...
Page 8
... percentage may be obtained by multiplying by five ; or , inversely , if the percentage is given , the produce may be got by dividing by five . A produce of 13 equals a percentage of 13.5 × 567.5 ; and a percentage of 70.0 equals a ...
... percentage may be obtained by multiplying by five ; or , inversely , if the percentage is given , the produce may be got by dividing by five . A produce of 13 equals a percentage of 13.5 × 567.5 ; and a percentage of 70.0 equals a ...
Page 11
... percentage of the substance to be determined , the larger should be the amount of the ore taken . The following table will give a general idea as to this : - Percentage of the substance to be determined . 100-10 10-5 5-1 : - Amount of ...
... percentage of the substance to be determined , the larger should be the amount of the ore taken . The following table will give a general idea as to this : - Percentage of the substance to be determined . 100-10 10-5 5-1 : - Amount of ...
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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