Excerpt from The Chemistry of Cyanide Solutions Resulting: From the Treatment of Ores
In preparing the following treatise, my object has been not so much to give the results of any special researches on individual obscure points as to present a comprehensive and, so far as possible, complete review of the entire subject. For this purpose a short description of well-known methods is introduced, and, where necessary, a critical discussion of their value. I have also described the various modifications of existing methods that have been suggested from time to time, but which have not hitherto been collected and compared, and have given the results of experiments made to test the accuracy of the assumptions on which such modifications are based. While, for the sake of completeness and the clear presentation of the subject, it has been necessary to include much that is already familiar, it is hoped that the points discussed are shown to be of sufficient interest and importance to justify a somewhat extended investigation.
A systematic study of the solutions resulting from the continued working of the cyanide process on some particular class of ore may throw much light on the chemical and economic problems involved in the treatment, and in some instances has proved of great practical value. It is highly desirable, therefore, to have a fairly simple, rapid and reliable system of laboratory tests for determining the amount of any of the more important constituents of such solutions. In addition to these laboratory methods, one or two rough tests are needed which will suffice for controlling the daily routine operations of the plant; such tests should give a clear and unmistakable indication, and should represent some factor of real value in the treatment, though strict scientific accuracy is not a necessity in this case.
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