Rock Moisture Affects Flotation Process

Rock Moisture Affects Flotation Process

Zhengzhou, China (prHWY.com) May 29, 2012 - Flotation is an important part during ore beneficiation process. Flotation involves phenomena related to the relative buoyancy of objects. Flotation pulp is carried out in a three-phase system which is solid mineral particles, water and bubbles. For different minerals in the flotation separation process to be effective, they must be fully reflected differences in their surface properties, the greater the difference, the easier sorting.

Wetting is a common phenomenon in nature, occurred in the solid-liquid interface. A drop of water drops in the paraffin surface, the water was spherical; and drop a drop of water in the quartz surface, water is rapidly extended. Usually start on the surface of water in minerals and not to proceed with the phenomenon known as wetting and non-wetting phenomena. Susceptible to water wetting the surface is called hydrophilic surface, the minerals known as hydrophilic minerals.

Different mineral surface hydrophobic and hydrophilic different, that is wet to varying degrees. Minerals on the surface of the air in droplets spreading in the form of the mineral surface, from left to right, drop in the mineral surface and gradually more and more difficult to carry out spherical. Shows from left to right, minerals gradually increase the surface hydrophobicity, hydrophilicity gradually weak. Mineral water bubbles under the surface is attached to the mineral surface in the form of bubbles from the bubble in the mine to see the conditions attached to mineral surfaces, from left to right, the bubble gradually expand the mineral surface was flat, the shape of the bubble coincided with the drop of shape the contrary, the description of bubbles in the mineral surface to expand and combine with increasingly strong mineral surface, the degree of attachment growing.dryer machine:http://www.hx-china.com/15.html
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The Hongxing Machinery flotation machine is the latest design to use the circular tank concept and combines the benefits of circular cells with the unique features of the mechanism to create the ideal conditions to maximise flotation performance for all roughing, cleaning and scavenging duties. Metso Minerals offers the full range of cell volumes required for modern ore processing plants with cell sizes from 5 to 200 m3 .

The technology evolved from column flotation. Based on its experience designing and engineering coal flotation circuits, Eriez has developed the new flotation device, which offers high capacity in a small footprint. Unlike column flotation, the tank is shorter and smaller, not only reducing the footprint, but the load as well. The system is designed to operate at low pressure so the total energy consumption is lower per ton of fines processed. A low-pressure blower delivers the flotationair, resulting in lower operating and maintenance costs, according to Eriez, when compared with systems driven by compressed air.

Currently, artificial wetting adjustment methods are two main categories: physical and chemical methods. Mineral surface wettability and its regulation is key to achieving the separation of various minerals, so to understand and grasp the difference between mineral surface wettability, change rules and principles regulating the method of flotation theory and practice is important. In fact, the aeration chamber provided an addition residence time of only about five to 10 seconds to the total flotation circuit.

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