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Angel analytical significance mineral surface adsorption of flotation
2015-04-15 Reads : 46
Flotation machine, mining flotation machine is the main equipment flotation, flotation is the use of agents to adjust the mineral surface floatability. Therefore, the study of mineral flotation reagent adsorption surface is very important. First, the basic concepts of adsorption and flotation on the meaning of (a) Adsorption: The adsorption of a liquid or gaseous substances in concentrations increase or decrease in the interfacial phenomena. When a solute was added to the solution, the solution reduces the surface free, and the concentration of the solution is greater than the internal surface concentration of the solute, the solute is called surfactant (or surfactants). Such adsorption called positive absorption. Conversely, if added after the solute, the surface free energy of the solution is increased, and the solute concentration at the surface layer is less than the concentration of the liquid inside, the solute is said non-surfactant (or surfactant), such a negative adsorption adsorption. Adsorption interface are: solid - liquid interface, the gas - liquid interface, the liquid - liquid interface and solid - gas interface. At a certain temperature, when the adsorption equilibrium is reached, the number of moles per unit area of ??adsorbed adsorbate, called adsorption capacity under these conditions is usually represented by T. For the solid - liquid interface adsorption, such as adsorption agent in the mineral surface, there are two ways that one agent adsorbed on the number of moles per unit area with said called adsorption density. Units of mol / cm2; plus a dosage unit weight with mineral absorption expressed in units of mol / g or mg / g, the former than the latter is generally considered good, but need to determine the surface area of ??the mineral. Second, the adsorption of the significance of the flotation in the flotation gas, liquid and solid is carried out, and therefore, the adsorption is the main form of minerals, medicaments, bubble interactions, along with the whole flotation process. For example: When adding agents to the pulp, some agents (such as collecting agent, modifier) ??adsorbed on the solid - liquid interface, a direct impact on the mineral surface chemical properties of matter now, thereby regulating mineral floatability achieve minerals The purpose of sorting. There are some medications (such as foaming agent) adsorbed gas - liquid interface, reducing the liquid - free gas interface can prevent mergers bubble burst bubbles to improve the stability and degree of dispersion, to promote bubble and mines forming a stable foam layer mineralized purpose, to make the object of the mineral for effective recovery. Therefore, the study of adsorption phenomena, the study and practice guidance flotation flotation theory, are of great significance.
keywords: Flotation, flotation machine manufacturers, flotation machine equipment,
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You are the 33432 visitor
Copyright © GuangDong ICP No. 10089450, Gongyi City Angel Machinery Manufacturing Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility