𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Recent progress in the science of aeronautics

✍ Scribed by Joseph S. Ames


Publisher
Elsevier Science
Year
1925
Tongue
English
Weight
422 KB
Volume
199
Category
Article
ISSN
0016-0032

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Recent progress in the metallurgy of cop
✍ Heinrich O. Hofman πŸ“‚ Article πŸ“… 1916 πŸ› Elsevier Science 🌐 English βš– 834 KB

THE aim of all smelting of sulphide copper ore is to collect the copper in matte which contains usually 40 to 45 per cent. Cu, 35 to 3 Β° per cent. Fe, and 25 per cent. S, and the missing constituents in a slag, a mixture of silicates of Jr.on, lime, etc., low enough in Cu to form a waste product. Th