Download or read book A Conceptual Model for the Role of Oxygen in Xanthate Adsorption on Galena written by Edwin E. Maust and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Conceptual Model for the Role of Oxygen in Xanthate Adsorption on Galena written by Edwin E. Maust and published by . This book was released on 1976 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1976 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beneficiation of Unweathered Indian Calcareous Phosphate Rock by Calcination and Hydration written by Charles M. McCulloch and published by . This book was released on 1976 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oil and gas seeps in Alaska written by Donald P. Blasko and published by . This book was released on 1976 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface and Colloid Science written by Egon Matijevic and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the first volume appeared in 1969, this series has received good reviews in a variety of periodicals published in different corners of the world. It would seem that the work has fulfilled its purpose as outlined in the Preface to Volume 1. The rapidly increasing interest in surface and colloid science by people engaged in industrial research and development, and in environmental, ecological, medical, pharmaceutical, and other areas, justifies the continuation of such an effort. The Surface and Colloid Science series originated with John Wiley and Sons and has been continued with Plenum Press. This volume is the third with the present publisher, and is the best assurance of our mutual interest to proceed with this work. Some books in the series, as was the case with Volume 11, may appear under the editorship of other workers in the field. For reasons of continuity, a sequential numbering system will be maintained. This editor hopes to provide the scientific and technical community with high-quality contributions in surface and colloid science in the future. He invites specialists to submit definitive chapters on any topic within the broad area of our discipline for inclusion in this series.
Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1976 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on 1980 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical Chemistry of Mineral reagent Interactions in Sulfide Flotation written by and published by . This book was released on 1979 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on 1979 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bureau of Mines Research written by and published by . This book was released on with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Aspects of the Role of Oxygen in the Interaction Between Xanthate and Galena written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The reaction between potassium ethyl xanthate, oxygen, and galena over periods of 20 to 30 hr has been studied. Quantitative results are presented for the reaction at pH 10, but it is shown that the general features of the behaviour are the same within the range pH 8 to 11. Two types of reaction are observed. The first involves adsorption of the xanthate and takes place at a rate, dq/dt, that decreases exponentially with the quantity of reagent adsorbed. The second is thought to involve reaction between the xanthate and the oxygen catalyzed by the surface. Its rate increases with time until it reaches a constant value, Rf. A product of reaction may be ethyl monothiocarbonate. The parameters of the adsorption rate equation, and, therefore, the rate and extent of adsorption at any time, vary directly with the square root of partial pressure of oxygen (p) for p
Download or read book Oxidation of Sulfide Minerals in Benefication Processes written by A Abramov and published by CRC Press. This book was released on 1998-01-23 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of recent experimental studies and modern theoretical concepts are combined in this volume to provide a comprehensive analysis of sulfide mineral oxidation processes. Introductory chapters discuss the properties of sulfide minerals and various investigative techniques, followed by chapters on oxidation mechanisms and the behavior of minerals under these various oxidizing conditions. This book also demonstrates modern methods of physical-chemical modelling and the regulation and optimization of flotation processes.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1976 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactions in the System Galena xanthate oxygen written by and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Interactions between solutions of potassium ethyl xanthate and galena have been studied. Advances in experimental technique have allowed certain deficiencies in previous work on the subject to be identified. The most important is the failure to recognize slow components of the interaction. Developments in technique also gave improved control of oxygen and oxidation processes in the system. Thus, a preliminary study of the quantitative aspects of the role of oxygen could be made. It has been shown that, within the sensitivity of the experiments, there is no reaction between xanthate and galena in the absence of oxygen. In the presence of oxygen, either in solution or as surface oxidation products, the reaction does not appear to terminate. If oxygen-containing xanthate solutions are contacted with a newly sulphided mineral surface, an induction period is observed; this is followed by a rapid abstraction of xanthate from solution, which gradually slows down but never ceases. As the surface becomes increasingly oxidized, the length of the induction period decreases and the initial rate of abstraction increases, but the behaviour of the system is otherwise unaffected. Once the surface is sufficiently oxidized, the abstraction of xanthate continues even in the absence of dissolved oxygen. The rate of abstraction of xanthate from oxygen-containing solutions appears to depend upon the oxygen concentration, the quantity of xanthate that has already been abstracted from the solution, and the time for which the solution has been in contact with the mineral. It is not certain whether all of the xanthate abstracted from the solution is adsorbed by the mineral. The treatment of the xanthated mineral with solutions of sodium sulphide failed to recover all of the abstracted reagent. An investigation into the possibility that the rate of xanthate decomposition is accelerated by the presence of the mineral gave inconclusive results. A more thorough study will be necessary before the reason for the discrepancy can be identified. A consideration of the literature on the system reveals an important anomaly, which centres on the failure of all attempts to reverse the adsorption of xanthate onto sulphide minerals. This anomaly can be explained in the light of the present work. Since previous workers have failed to detect the slower components of interactions in the system, they have been led to consider that equilibrium had been established under conditions where there was still a strong driving force in the forward direction. Therefore, it is probable that they failed to reverse the driving force in their attempts to desorb the reagent.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1977 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
