A Text-book of Assaying: For the Use of Those Connected with Mines |
From inside the book
Results 1-5 of 91
Page 2
... equal weight and at frequent and regular intervals , will represent the mass from which it was taken . Taking a heap of ore , A , and selecting one out of every twenty spade- , bag- , barrow- , or wagon - fuls , according to the ...
... equal weight and at frequent and regular intervals , will represent the mass from which it was taken . Taking a heap of ore , A , and selecting one out of every twenty spade- , bag- , barrow- , or wagon - fuls , according to the ...
Page 3
... equal portions at equal distances . Mix and assay . 4. If a mud of coarse and fine particles , or of particles of unequal density weigh and transfer to a porcelain dish , or weigh in the dish . Dry at 100 ° C. , weigh . Treat the ...
... equal portions at equal distances . Mix and assay . 4. If a mud of coarse and fine particles , or of particles of unequal density weigh and transfer to a porcelain dish , or weigh in the dish . Dry at 100 ° C. , weigh . Treat the ...
Page 5
... equal portions fairly at regular intervals , weigh into a Berlin dish 20 grams . This should then be dried over a sand - bath , or if the ore is likely to be injured by excess of heat , over a water - bath until the weight is constant ...
... equal portions fairly at regular intervals , weigh into a Berlin dish 20 grams . This should then be dried over a sand - bath , or if the ore is likely to be injured by excess of heat , over a water - bath until the weight is constant ...
Page 6
... equal to that of the original crystals . Perfectly dry substances may contain much water , and this combined water is retained by different materials with very unequal vigour . Sodium sulphate and sodium phosphate crystals lose water ...
... equal to that of the original crystals . Perfectly dry substances may contain much water , and this combined water is retained by different materials with very unequal vigour . Sodium sulphate and sodium phosphate crystals lose water ...
Page 8
... equals a percentage of 13.5 × 567.5 ; and a percentage of 70.0 equals a produce of 705 = 14 . With tin ores as ... equal 653,333.3 dwts . or 32,666.6 ozs . ( troy ) . The following rules are useful : — To get ozs . ( troy ) per ton ...
... equals a percentage of 13.5 × 567.5 ; and a percentage of 70.0 equals a produce of 705 = 14 . With tin ores as ... equal 653,333.3 dwts . or 32,666.6 ozs . ( troy ) . The following rules are useful : — To get ozs . ( troy ) per ton ...
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
Popular passages
Page 7 - Crown 4to. Cloth. Part I. — Elementary Chemistry, 2/. Part II. — The Chemistry of the Non-Metallic Elements, including a Comprehensive Course of Class Experiments, 10/6.
Page 15 - ELEMENTS OF METALLURGY. A PRACTICAL TREATISE ON THE ART OF EXTRACTING METALS FROM THEIR ORES. BY J. ARTHUR PHILLIPS, M.lNST.OE, FCS, FGS, <fcc.
Page 23 - COBBETT (William): ENGLISH GRAMMAR, in a Series of Letters, intended for the use of Schools and Young Persons in general.
Page 22 - Copies of the FIRST ISSUE, giving an Account of the History, Organization, and Conditions of Membership of the various Societies, and forming the groundwork of the Series, may still be had, price 7/6. Also Copies of the Issues following.
Page 16 - PROFESSOR SEELEY maintains in his ' PHYSICAL GEOLOGY ' the high reputation he already deservedly bears as a Teacher.
Page 19 - No more enduring Memorial of Professor Rankine could be devised than the publication of these papers in an accessible form. . . . The Collection is most valuable pa account of the nature of his discoveries, and the beauty and completeness of his analysis.
Page 19 - MISCELLANEOUS SCIENTIFIC PAPERS. Royal 8vo. Cloth, 31s. 6d. Part I. Papers relating to Temperature, Elasticity, and Expansion of Vapours, Liquids, and Solids. Part II. Papers on Energy and its Transformations. Part III. Papers on Wave-Forms, Propulsion of Vessels, &c.
Page 3 - Well-digested, clear, and well-written- the work of a man conversant with every detail of his subject, and a thorough master of the art of teaching. — British Medical Journal. " Students preparing for examinations will hail it as a perfect godsend for its conciseness.
Page 18 - Manual .of Machinery and Millwork' fully maintains the high reputation which he enjoys as a scientific author ; higher praise it is difficult to award to any book. It cannot fail to be a lantern to the feet of every engineer.
Page 21 - AE A Manual of Marine Engineering. Comprising the Designing, Construction and Working of Marine Machinery.