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Home > History and Archaeology > History > Western Mill and Smelter Methods of Analysis; A Practical Laboratory Handbook for the Assayer and Chemist: (English)
Western Mill and Smelter Methods of Analysis; A Practical Laboratory Handbook for the Assayer and Chemist: (English)

Western Mill and Smelter Methods of Analysis; A Practical Laboratory Handbook for the Assayer and Chemist: (English)

          
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About the Book

This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1905. Not illustrated. Excerpt: ... CHAPTER IV. Coal and Coke. Proximate Analysis (Heinrichs). Weigh out in duplicate 1 gram of powdered coal; place in a small beaker, cover with a watch glass and place on the steam dryer for twenty-four hours. Take off and weigh; the loss found multiplied by 100 equals the percentage of moisture in the coal. Weigh 1 gram of the powdered coal into a medium sized porcelain crucible, put the cover on and place the crucible in a medium hot muffle and allow it to remain until fumes cease to come out around the edge of the cover. Remove, cool and weigh; the loss less the moisture previously found, multiplied by 100, equals the percentage of volatile combustible matter. This should also be done in duplicate and the results should check. After weighing the volatile matter, put the material back in the crucible, replace the cover and return to the muffle until the ash turns white, showing the carbon to be completely burned off. Remove, cool and weigh. The difference between this weight and the last, multiplied by 100, equals the percentage of fixed carbon; the remainder is ash, which, multiplied by 100, equals the percentage of ash. Coke. Essentially the same method as for coal. Coke ash is, however, analyzed for silica, iron, alumina and lime, as follows: Burn about 5 grams of coke in the muffle in order to have sufficient ash. Pulverize about 2 grams finely in an agate mortar and from this weigh out and fuse in a platinum crucible % gram with from 5 to 7 grams of mixed alkaline carbonates. Dissolve in water and hydrochloric acid and run to dryness, take up with hydrochloric and nitric acids and filter off the silica, burn and weigh. The filtrate is neutralized and boiled with caustic potash. The iron is filtered off, dissolved in hydrochloric acid, reduced with stannous...


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Product Details
  • ISBN-13: 9781151339072
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 26
  • Series Title: English
  • Weight: 68 gr
  • ISBN-10: 1151339075
  • Publisher Date: 01 Jan 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Spine Width: 1 mm
  • Width: 189 mm


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Western Mill and Smelter Methods of Analysis; A Practical Laboratory Handbook for the Assayer and Chemist: (English)
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