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Flotation process observation foam practice
May 21, 2018

The appearance of the gold ore flotation foam includes the actuality, size, color, luster, profile, thickness, brittleness, fluidity, and acoustics of the foam. The physical properties are mainly the type, quantity, grain size, color, luster, and the type of mineral attached to the foam surface. Density is determined by the amount of foaming agent and agent used.


The main practical methods are: 1 Virtual reality: There are many mineral particles attached to the surface of bubbles and the secret is called “real”. The small amount of mineral particles attached to the bubble surface is called "virtual". Virtual: Bubbles are easy to break. 2 Size: Generally, the size of the bubbles in the roughing tank is 20 to 30 mm, and the bubble size in the sweeping tank is 5 to 15 mm. The bubble size is related to the amount of foaming agent. 3 Color: Flotation Different minerals have different colors. The more useful minerals that adhere to the foam surface, the more the color of the useful mineral appears. The darker the color, the better the quality of the concentrate, and the best choice for sweeping the rear foam is the color of the white, water film. 4 Gloss: The rough selection of flotation sulphide minerals is good with the mineralization of the foam in the selected area, and the metallic luster is strong. When the foam mineralization in the scavenging area is small, the metallic luster is weak. 5 Contours: Flotation of mineralized foam is affected by the interaction of bubbles in the ore liquid flow and the effect of the surface layer ore particles. The foam has a long residence time on the ore slurry surface. The mineral has a large hydrophobicity, the foam is broken, and the dried and crucible is incomplete. The outline of the bubble is blurred. 6 Thickness: The thickness of the foam is mainly related to the amount of the agent and the degree of bubble mineralization. More appropriate pharmaceutical agents, the high concentration of the original ore, the degree of mineralization is good, the foam layer is generally relatively thick, on the contrary is relatively thin. 7 Brittleness: The brittleness and stickiness of foams are affected to varying degrees. Brittleness, poor stability, and easy breakage can sometimes cause scratches. If the foam is too stable, it can cause flotation machine minerals to race. 8 Sound: When the foam is scraped by a squeegee, a “sanding” sound can be heard. It is the sound produced when the foam bursts. It is often a symbol of a mineral with a relatively large content and a coarse grain.