A Manual of Practical AssayingLongmans, Green, and Company, 1868 - 697 páginas |
Dentro del libro
Resultados 1-5 de 100
Página 10
... reduced to a pulverulent form , more or less fine , according to the nature of the chemical operation or assay to ... reduce it to the very highest degree of fineness by elutriation . There is also another operation , which is as ...
... reduced to a pulverulent form , more or less fine , according to the nature of the chemical operation or assay to ... reduce it to the very highest degree of fineness by elutriation . There is also another operation , which is as ...
Página 16
... reduced to an impalpable powder . When small specimens or rare minerals are being operated upon , or if it is especially desirable to avoid loss , it is advisable FIG . 8 . to use a steel mortar ( fig . 8 ) for the preparatory reduction ...
... reduced to an impalpable powder . When small specimens or rare minerals are being operated upon , or if it is especially desirable to avoid loss , it is advisable FIG . 8 . to use a steel mortar ( fig . 8 ) for the preparatory reduction ...
Página 18
... reduced , sift it , and it will be found that what passes through is nearly pure mineral , with only a small quantity of matrix ; repeat the pounding and sifting operations , until , after a few repetitions , that which remains in the ...
... reduced , sift it , and it will be found that what passes through is nearly pure mineral , with only a small quantity of matrix ; repeat the pounding and sifting operations , until , after a few repetitions , that which remains in the ...
Página 42
... REDUCTION . The process of reduction consists in removing oxygen or analogous element from any body containing it ... reduced with carbon : - 2 ( PbO ) + C = 2Pb + CO2 . In this first case we start with oxide of lead and carbon , and ...
... REDUCTION . The process of reduction consists in removing oxygen or analogous element from any body containing it ... reduced with carbon : - 2 ( PbO ) + C = 2Pb + CO2 . In this first case we start with oxide of lead and carbon , and ...
Página 43
... reducing substance contain both carbon and hydrogen the action will be thus , when a metal ( e.g. lead ) is reduced from its oxide , carbonic acid and water being formed : - 3Pb + CO2 + HO . 3 ( PbO ) + CH = In the operation of reduction ...
... reducing substance contain both carbon and hydrogen the action will be thus , when a metal ( e.g. lead ) is reduced from its oxide , carbonic acid and water being formed : - 3Pb + CO2 + HO . 3 ( PbO ) + CH = In the operation of reduction ...
Contenido
1 | |
9 | |
12 | |
18 | |
32 | |
38 | |
40 | |
46 | |
407 | |
413 | |
425 | |
434 | |
441 | |
451 | |
453 | |
460 | |
52 | |
63 | |
69 | |
71 | |
77 | |
81 | |
103 | |
107 | |
119 | |
128 | |
135 | |
138 | |
145 | |
148 | |
183 | |
193 | |
224 | |
238 | |
250 | |
251 | |
268 | |
275 | |
281 | |
297 | |
369 | |
373 | |
390 | |
397 | |
404 | |
466 | |
475 | |
486 | |
492 | |
525 | |
546 | |
556 | |
563 | |
569 | |
576 | |
592 | |
595 | |
602 | |
612 | |
618 | |
624 | |
641 | |
650 | |
653 | |
662 | |
668 | |
674 | |
676 | |
682 | |
689 | |
700 | |
700 | |
700 | |
Otras ediciones - Ver todas
Términos y frases comunes
added alloy ammonia amount antimony aqua regia arsenic ascertained assay bismuth black flux blowpipe boiling borax button calcined carats carbonate of soda carbonic acid cent charcoal chloride of silver clay cobalt colour combustion containing cooling copper Crown 8vo crucible cubic cubic centimetres cupel decomposed dilute dissolved Edition employed excess filter flame flask fluid fuel furnace fused fusible fusion gives glass globule gold grains grammes heat hydrochloric acid ignited inches iron lime liquid litharge manganese matter melted mercury metal method mineral mixed mixture muffle nickel nitrate nitric acid normal solution obtained operation Ounce oxide oxide of lead oxidising oxygen permanganate peroxide pipette placed plate platinum potash potassium powder precipitate produced proportion protoxide pulverised pure readily reduced roasting salt silica slag small quantity sodium specific gravity substance sulphate of lead sulphide sulphuric acid temperature thousandths tion tube vessel washed weight Woodcuts zinc
Pasajes populares
Página 1 - An Outline of the Necessary Laws of Thought : a Treatise on Pure and Applied Logic. By the Most Rev. W. THOMSON, DD Archbishop of York.
Página 1 - Additions. 4 vols. 4to. price £7. Thesaurus of English Words and Phrases, classified and arranged so as to facilitate the expression of Ideas, and assist in Literary Composition. By PM ROOET, MD New Edition.
Página 4 - The Diagnosis, Pathology, and Treatment of Diseases of Women ; including the Diagnosis of Pregnancy. By GRAILY HEWITT, MD &c. President of the Obstetrical Society of London. Second Edition, enlarged; with 116 Woodcut Illustrations. 8vo. 24s. Lectures on the Diseases of Infancy and Childhood. By CHARLES WEST, MD &c.
Página 11 - HOMES WITHOUT HANDS ; a Description of the Habitations of Animals, classed according to their Principle of Construction.
Página 8 - Dr. Ure's Dictionary of Arts, Manufactures, and Mines : Containing a clear Exposition of their Principles and Practice.
Página 5 - World: a Popular Description of Man and Nature in the Arctic and Antarctic Regions of the Globe. By the same Author.
Página 6 - Lectures on the Diseases of Infancy and Childhood. By CHARLES WEST, MD". &c. Fifth Edition" 8vo. 16s. On the Surgical Treatment of Children's Diseases. By T. HOLMES, MA &c. late Surgeon to the Hospital for Sick Children. Second Edition, with 9 Plates and 112 Woodcuts. 8vo. 21s. A System of Surgery, Theoretical and Practical, in Treatises by Various Authors.
Página 15 - The Dead Shot, or Sportsman's Complete Guide ; a Treatise on the Use of the Gun, Dog-breaking, Pigeon-shooting, &c. By MARKSMAN. Fcp. with Plates, 5s. A Book on Angling: being a Complete Treatise on the Art of Angling in every branch, including full Illustrated Lists of Salmon Flies. By FRANCIS FRANCIS.
Página 11 - PRINCIPLES of EDUCATION Drawn from Nature and Revelation, and applied to Female Education in the Upper Classes. By the Author of
Página lvii - A Dictionary of Practical Medicine : Comprising General Pathology, the Nature and Treatment of Diseases, Morbid Structures, and the Disorders especially incidental to Climates, to Sex, and to the different Epochs of Life ; with numerous approved Formulae of the Medicines recommended.