| Description |
v, 59 leaves : illustrations ; 28 cm |
| Summary |
"Effective flotation of an ore is the result of several factors: selection of suitable reagents; the proper combination of reagents, processing conditions of the operation proper such as time intervals involved and the machinery used. To focus the investigation on a specific field it was decided to investigate in some detail the behaviour of the more popular collectors toward oxidized copper minerals. This investigation was carried out chiefly by applying contact-angle measurements as obtained with the various collectors on the basic carbonate and oxide copper minerals. This basic information was desirable before carrying out actual flotation tests. There was little information of this kind available in published literature. The contact angles for ethyl and amyl xanthates, some mercaptans and sodium oleate were determined. The effect of sulphidization with sodium sulphide of the oxidized minerals in conjunction with the sulphydrate collectors, was investigated. The test work indicated that contrary to the experience with sulphide minerals, the contact angle for a given collector was influenced by the mineral used, carbonates as compared with the oxide, also a higher concentration of collector was necessary to yield contact as compared with sulphide minerals"--Introduction, leaves 1-2. |
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