New PDF release: Advances in Chemical Engineering, Vol. 9

By Thomas B. Drew (ed.), Giles R. Cokelet (ed.), John W. Hoopes (ed.), Theodore Vermeulen (ed.)

ISBN-10: 0120085097

ISBN-13: 9780120085095

Show description

Read or Download Advances in Chemical Engineering, Vol. 9 PDF

Similar chemistry books

Heterogeneous Catalysis and Fine Chemicals II: Proceedings by M. Guisnet, J. Barrault, C. Bouchoule, D. Duprez PDF

The recession within the conventional heavy industries in addition to the improvement of complicated applied sciences in all of the business international locations has intended that the effect of heterogeneous catalysis within the synthesis of good chemical compounds is turning into more and more obvious. the second one foreign Symposium on Heterogeneous Catalysis and effective chemical compounds is to be visible during this point of view.

Phosphorus Ylides: Chemistry and Application in Organic - download pdf or read online

While Wittig first built and defined phosphorus ylides, no one may have imagined how precious and flexible this category of compounds should be. This publication offers a entire and updated compilation of the chemistry and functions of phosphorus ylides in natural synthesis. The ylides are mentioned as reagents within the synthesis of a huge variety of gear, among them olefins, acetylenes, cyclic and heterocyclic compounds, in such certainly happening compounds as pheromones, steroids and carotenoids, and pharmaceutically and biologically energetic compounds similar to antibiotics and prostaglandins.

Additional info for Advances in Chemical Engineering, Vol. 9

Sample text

In a large-scale operation, the problems of preventing the loss of solvent from the mining area and the recovery of the pregnant liquor are the major considerations. The complexity of the ore-solutionfluid flow interaction in the reservoir fractures, fissures, and heterogeneities can probably be solved by the creation of hydrodynamic barriers. , by the petroleum industry are applicable to solution mining. Davis (D2) reported the results of a field test that involved the isolation of a uranium ore body by surrounding it with a curtain of grout material.

The reactions of acid chlorine solutions with galena (PbS), pyrite (FeSz), sphalerite (ZnS), chalcocite (CuzS), covellite (CuS), chalcopyrite (CuFeSz), bornite (Cu5FeS4),pyrrhotite (FeS), and arsenopyrite (FeAsS) were examined with respect to their reaction rates and mechanisms. Three primary reactions were observed between aqueous chlorine and the base-metal sulfides. Elemental sulfur was produced during the reaction with chalcocite, bornite, and covellite. A rapid oxidation of the pyrrhotite, pyrite, and arsenopyrite to the sulfate form was observed.

The naturally slow reaction was accelerated with the addition of NaCl or HC1. The addition of salt in a dump leaching operation would be a relatively easy and cheap procedure to attain increased reaction rates. The leaching of mercury ores and flotation concentrates is an attractive alternative to the recovery of mercury by the direct retorting process especially when the ore is low grade, wet, high in pyrite, and contains arsenic and ant,imony. In addition to a low recovery (as low as 60%), the health hazards from the vapors and dust must also be minimized if not completely eliminated.

Download PDF sample

Advances in Chemical Engineering, Vol. 9 by Thomas B. Drew (ed.), Giles R. Cokelet (ed.), John W. Hoopes (ed.), Theodore Vermeulen (ed.)

by Richard

Rated 4.84 of 5 – based on 10 votes