Melting Aluminium Chips

Melting Aluminium Chips

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... remelted with the same proportion of the same kind of flux as was used in the original melt and the weight of secondary ingot thus obtained was added to that of the original ingot to give the total yield. The results of the test with the commercial flux mentioned were rnsrs wrrn DEHYDRATED CARNALLITE. Dehydrated carnallite, or a mixture in molecular proportions of KCI and MgCl, has a low melting point and has been suggested as a flux. Tests with this flux gave the following results: Results of melting borings with flux of dehydrated carnallite. Run Run No.29. No.30. Barrel from which chips were taken................... A A Observer............................................. G G Weight of chips used, kilograms........................ 2 2 Percentage of flux used, on basis of weight of chips.... 5 25 Approximate final temperature, C..................... 725 800 Yield of metal: Primary yield, percentage of weight of chips...... 47 48 Total yield, percentage of weight of chips......... 60. 5 59 Total yield, percentage of metal content of charge.. 67 65. 5. DISCUSSION OF RESULTS WITH THE TWO FLUXES. Neither flux, even when 25 per cent was used, was in sufficient quantity to soak up all the dirt and dross and still become truly fluid. Neither flux rose entirely to the top, but much stuck to the sides and bottom of the crucible. SPRINKLING WITH ZINC--CHLORIDE SOLUTION AND DRY SALT. As the use of 2 per cent of a strong solution of ZnCl, and 2 per cent dry NaCl sprinkled over the borings had been suggested (see p. 30), this was tried. The results of the test were as follows: Results of melting borings sprinkled with ZnCl, solution and dry NaCl (run N0. 81). Barrel from which chips were taken, A. Observer, J. Weight of chips used, 1.5 kilograms. Quantity...show more

Product details

  • Paperback | 40 pages
  • 189 x 246 x 2mm | 91g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236646304
  • 9781236646309