Flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. The flotation process was developed on a commercial scale early in the 20th century to remove very fine mineral particles that formerly had gone to waste in gravity concentration plants. Flotation has now become the most widely used process for extracting many minerals from their ores.
Nature sulfide mineral oxide minerals by air or water, oxygen and ions in the water oxidation process usually occurs in the upper part of the deposit, according to the geological conditions are different oxide thicknesses of up to 10 to 50m.
Press the ore oxidation rate (percentage) refers to the existence of a metal oxide mineral status in different ore into oxide ore, sulphide and mixed ore. General provisions, the oxidation rate of more than 30% for oxide ore, oxidation rate below 10% for the sulphide ore mixed in between mine. Non-ferrous metal oxide ore mineral of copper oxide, lead oxide, and zinc oxide ore.
Non-ferrous oxide ores has the following characteristics: 1. The structure is more complex, fine-grained disseminated and difficult to dissociation, generally are crisp, finely ground easily mudding; 2. mineral composition is very complex, often within the same deposit containing a variety of the same metal oxidationminerals, flotability difference is great; 3. often contain a lot of slime and soluble salts; 4. different deposits in the nature of the oxide ore very different, even in the same deposits as the degree of oxidation of the different lots and the nature of the ore vary widely. Thus oxidized ore flotation is more difficult. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like flotation separator, Henan Hongxing is always doing the best in products and service.jerking table: http://www.crusher-machine.com/n135.html
Copper Oxide and Mixer Ore Convenitional Flotation Method:
① sulfidation methods — the most common, simple process, who can be vulcanized oxide copper this method can be carried out flotation. The nature of the sulphide ore sulfide oxide ore available xanthate flotation. Malachite and azurite easily with sodium sulfide, chrysocolla and cuprite more difficult sulfide.
② organic acids flotation—-Organic acids and their soaps good flotation of malachite and azurite. This method can be as gangue minerals than carbonate minerals.
③ leaching – sedimentation – flotation — When the sulfidation methods and organic acids, the law can not be satisfied with the effect.
④ ammonia leaching – Sulfide Precipitation – flotation method — such as ores containing large amounts of alkaline gangue using acid leaching consumption, the high cost of using. The law of the ore is finely ground, adding sulfur powder, and then ammonia leaching.
This ability to modify the floatability of minerals has made possible many otherwise difficult separations that are now common practice in modern mills. Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process.