Bachelors Theses

Abstract

"It is noticable sic that about all of the recent improvements in cyanide practise sic have been along mechanical rather than chemical lines. the use of oxidizers such as air, ozone, sodium peroxide, etc., the use of the salts of lead, and even the addition of a coating of lead to the zinc shavings in the extractor boxes were all recommended when the process was first advocated but sometimes for different reasons. In the early days of the process the addition of hypochlorites, alkaline persulphates, and the use of mercuric cyanide was also investigated but has not proven satisfactory owing to the increases in cost. If, however, there has been no advance made along the chemical side of the process the reverse is certainly true of the mechanical side. Whereas in the past the attempt of everyone was to crush coarse and make as few fines and possible, now, owing to the improved machinery for the treatment of slime, the tendency is to slime all the ore as this has been found in a majority of cases to give a higher extraction and less cost than the former practise sic did"--Introduction, page 3.

Advisor(s)

Copeland, Durward
Mann, Horace T.

Department(s)

Mining Engineering

Degree Name

B.S. in Mining Engineering

Comments

Illustrated by author.

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1910

Pagination

43 pages

Note about bibliography

Includes bibliographical references (pages 41-43).

Rights

© 1910 Harvey Edson Smith, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Cyanide process

Thesis Number

T 239

Print OCLC #

5933120

Electronic OCLC #

317127761

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