Notes On Assaying And Metallurgical Laboratory Experiments
Notes On Assaying And Metallurgical Laboratory Experiments
Richard W Richard Walley Lodge
The book Notes On Assaying And Metallurgical Laboratory Experiments was written by author Richard W Richard Walley Lodge Here you can read free online of Notes On Assaying And Metallurgical Laboratory Experiments book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Notes On Assaying And Metallurgical Laboratory Experiments a good or bad book?
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Both the slags and the cupels were assayed by the crucible method, the results being given in Table I. The silver and gold beads from the slag of charges Nos. I and 2, and those from the cupels used in tests' Nos. 2- and 3, sank into the cupels which were reassayed. This addi- tional assay may account for the low results in silver and gold that were obtained in tests Nos. 2 and 3. The silver-gold beads were weighed, but, as they did not contain sufficient silver to part them, they were recupell...ed, with the addition of chemically pure silver; the cupels of this latter cupellation were not reassayed. The parting was done with nitric acid of 1. 16, 1. 20, and 1. 27 specific gravities. The results obtained are given in Table I. Charges Nos. 5, 6, and 7, which were similar in all respects to charges Nos. I and 2, were next weighed and placed in the muffle as indicated in Fig. 2. The temperature of the muffle was that used in the ordinary assay, and the door of the muffle was kept closed for 10 min- utes.
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