The Metallurgy of Lead & Silver: LeadGriffin, 1899 - Lead |
From inside the book
Results 1-5 of 66
Page xi
... Coke and Charcoal , 133 123 Anthracite , 134 124 Bituminous Coal ,. 134 Gaseous Fuel , 135 · ponents , Lead Oxide ,. 124 Amount of Fuel Required , 135 124 General Arrangement , 136 5. Water Jackets , 154 General Consideration of Details ...
... Coke and Charcoal , 133 123 Anthracite , 134 124 Bituminous Coal ,. 134 Gaseous Fuel , 135 · ponents , Lead Oxide ,. 124 Amount of Fuel Required , 135 124 General Arrangement , 136 5. Water Jackets , 154 General Consideration of Details ...
Page xiii
... Coke Towers , 244 2. Fusion , 252 3. Freudenberg Plates , 244 Costs of Working , Labour , Smelting Charges , Losses , 253 Purchase of Ores , 258 • 253 253 Western Smelters ' Sliding Scale , 258 256 Concentration , 260 Concentration at ...
... Coke Towers , 244 2. Fusion , 252 3. Freudenberg Plates , 244 Costs of Working , Labour , Smelting Charges , Losses , 253 Purchase of Ores , 258 • 253 253 Western Smelters ' Sliding Scale , 258 256 Concentration , 260 Concentration at ...
Page 12
... coke . The scorifier commonly used in Colorado is the 21 - inch size , the charge for which is assay ton ( or on the 2000 lbs . ton scale , 2.9167 grammes , upon which quantity each mg . of silver obtained represents 1 oz . per ton ) ...
... coke . The scorifier commonly used in Colorado is the 21 - inch size , the charge for which is assay ton ( or on the 2000 lbs . ton scale , 2.9167 grammes , upon which quantity each mg . of silver obtained represents 1 oz . per ton ) ...
Page 16
... coke up to within an inch or two of the top without difficulty . It is important that the coke at the top of the fire be at a bright red heat , as otherwise the bottom of the charge melting while the top is still cold will effervesce ...
... coke up to within an inch or two of the top without difficulty . It is important that the coke at the top of the fire be at a bright red heat , as otherwise the bottom of the charge melting while the top is still cold will effervesce ...
Page 38
... coke or charcoal . A small proportion of sulphate formed in the roasting is either transformed into silicate at the end of the roasting process , and then reduced in the smelting furnace with the help of iron oxide , or it may be ...
... coke or charcoal . A small proportion of sulphate formed in the roasting is either transformed into silicate at the end of the roasting process , and then reduced in the smelting furnace with the help of iron oxide , or it may be ...
Other editions - View all
Common terms and phrases
20 per cent amount antimony arsenic assay average blast furnace bottom brick Broken Hill bullion carbon cast-iron charcoal charge CHARLES GRIFFIN coal coke concentrates consumption containing cooling copper cost crucible crust cupellation desilverisation dross dust employed Engineers EXETER STREET feet firebrick flue flue-dust Freiberg fuel fume fusible galena gases gold hearth heat Hofman inches Lautenthal lead and silver lime liquation litharge matte melting metallic Metallurgy Metallurgy of Lead method mixture molten ordinary oxide oxidised Parkes process pipe plates Port Pirie practice produced proportion pyrites quantity reaction reduced residue reverberatory reverberatory furnace rich roasting sample Schnabel separate shown in Figs siliceous sintering SiO2 skimmings slag smelting smelting zone softening furnace speiss sulphate sulphide sulphuric acid Table tapped temperature tons Trans treated tuyeres usually volatilisation Water Jacket weight work-lead zinc zinc sulphate
Popular passages
Page 33 - INTRODUCTION. — Tool Grinding. — Emery Wheels. — Mounting Emery Wheels. —Emery Rings and Cylinders. — Conditions to Ensure Efficient Working.— Leading Types of Machines.— Concave and Convex Grinding. — Cup and Cone Machines. — Multiple Grinding. — "Guest" Universal and Cutter Grinding Machines.
Page 28 - English and Foreign Boilers with their Heat Efficiencies shown in Fifty Tables — Fire Grates of Various Types — Mechanical Stokers — Combustion of Fuel in Boilers — Transmission of Heat through Boiler Plates, and their Temperature — Feed Water Heaters, Superheaters, Feed Pumps, &c. — Smoke and its Prevention — Instruments used in Testing Boilers — Marine and Locomotive Boilers — Fuel Testing Stations — Discussion of the Trials and Conclusions — On the Choice of a Boiler, and...
Page 83 - Illustrations. 9s. net. TEXTILE FIBRES OF COMMERCE. A HANDBOOK OF The Occurrence, Distribution, Preparation, and Industrial Uses of the Animal, Vegetable, and Mineral Products used in Spinning and Weaving BY WILLIAM I.
Page 60 - THE MINING ENGINEERS' REPORT BOOK AND DIRECTORS' AND SHAREHOLDERS' GUIDE TO MINING REPORTS. BY EDWIN R. FIELD, M.INST.MM With Notes on the Valuation of Property, and Tabulating Reports, Useful Tables, and Examples of Calculations, &c.
Page 82 - Properties, and Applications of the various substances described, and concise directions for their Commercial Valuation, and for the Detection of Adulterants. BY CHRISTOPHER RAWSON, FIC, FCS, Consulting Chemist to the Behar Indigo Planters' Association ; Co- Author of " A Manual of Dyeing ;
Page 68 - Illustrations. 8s. 6d. THE ART OF THE GOLDSMITH AND JEWELLER, A Manual on the Manipulation of Gold and the Manufacture of Personal Ornaments. BY THOS. B. WIGLEY, Headmaster of the Jewellers and Silversmiths
Page 55 - The work is one which will appeal to those intending to become farmers at home or in the Colonies, and who desire to obtain a general idea of the true principles of farming in ALL ITS BRANCHES."— Journal of the Royal Colonial Inst.
Page 80 - GENERAL CONTENTS. Introduction — Workshop and Stores— Plant and Appliances — Brushes and Tools — Materials : Pigments, Driers, Painters' Oils — Wall Hangings — Paper Hanging— Colour Mixing — Distempering — Plain Painting — Staining — Varnish and Varnishing — Imitative Painting — Graining — Marbling — Gilding — SignWriting and Lettering — Decoration : General Principles — Decoration in Distemper — Painted Decoration — Relievo Decoration — Colour — Measuring...
Page 33 - TRAVERSE TABLES: Computed to Four Places of Decimals for every Minute of Angle up to 100 of Distance. For the Use of Surveyors and Engineers. BY RICHARD LLOYD GURDEN, Authorised Surveyor for the Governments of New South Wales and Victoria, *»* Published with the Concurrence oj the Surveyors- General for New South Wales and Victoria. "Those who have experience in exact SURVEY-WORK will best know how to appreciate the enormous amount of labour represented by this valuable book.
Page 87 - The arguments for and against " sintering " and " slagging " respectively have been already stated in this chapter, and need not be repeated here. Suffice it to say that the...