Dianzuo Wang's Flotation Reagents: Applied Surface Chemistry on Minerals PDF

By Dianzuo Wang

ISBN-10: 7502471456

ISBN-13: 9787502471453

ISBN-10: 9811020280

ISBN-13: 9789811020285

ISBN-10: 9811020302

ISBN-13: 9789811020308

This booklet summarizes the author’s findings at the useful precept of flotation reagents, accrued during the last few many years. the basics of and methods universal to floor chemistry are utilized to review the reagents’ constitution and function, in addition to their interplay with minerals. specifically, the publication establishes the theoretical standards for collector functionality. additionally it is the quantum chemistry parameters, steric configuration, HOMO and LUMO floor of assorted reagents. The e-book bargains a worthwhile source for all collage graduate scholars, researchers and R&D engineers in minerals processing and extractive metallurgy who desire to discover cutting edge reagents and applied sciences that result in extra power effective and environmentally sustainable solutions.

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Extra resources for Flotation Reagents: Applied Surface Chemistry on Minerals Flotation and Energy Resources Beneficiation: Volume 1: Functional Principle

Sample text

K. Rideal, Interfacial Phenomena, pp. M. W. Fuerstenau, Trans. 1 Structural Characteristics of Collector Molecule and Independent Effect of Chemical Groups Belong to Surface Chemistry The fundamental characteristics of collector are supposed to include two aspects as follows. The first one is that collector is able to interact and attach with mineral surface. The second one is that the hydrophobicity of mineral surface can be improved after the adsorption of collector. Except for auxiliary collector such as nonpolar hydrocarbon oils, all ionic and nonionic collectors are comprised of polar groups which can be absorbed on mineral surface and consist of nonpolar groups which make mineral surface showing hydrophobicity.

The following gives a rough deduce for Langmuir adsorption of flotation reagent on mineral surface: jM þ A , jMA where M is mineral surface; A is reagent; MA is adsorption product; CA is the reagent concentrate; CM is the proportion of residual active site in which mineral surface is not covered by reagent; CMA is the proportion of active site in which mineral surface is covered by reagent. 2 Adsorption Equation of Flotation Reagent on Mineral Surface K¼ 19 CMA CM Á CA It is obvious that the value of CMA is same as that of adsorption amount (C).

In the course of studying the flotation of wolframite with 8-hydroxyquinoline as collector, the adsorption isotherm was obtained and shown in Fig. 2 [15]. 2 Adsorption Equation of Flotation Reagent on Mineral Surface 25 Fig. 2 Adsorption isotherm of 8-hydroxyquinoline on wolframite adsorption isotherm of 8-hydroxyquinoline on the wolframite is similar to type II. It indicates that there is no obvious point of saturated adsorption. But the point B is equivalent to point of saturated monolayer adsorption.

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Flotation Reagents: Applied Surface Chemistry on Minerals Flotation and Energy Resources Beneficiation: Volume 1: Functional Principle by Dianzuo Wang

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