Masters Theses

Abstract

"This thesis has been prepared to make available basic information on the use of the oxidation products of pyrrhotite to cement hydraulic tailing stope fill. As nothing has been published on this subject to date, a review has been made of pertinent information culled from accounts of work in related fields. From this study, a set of equations representing the most likely pyrrhotite oxidation reactions has been evolved and tests supporting these equations performed. Samples of fill, each containing from one to six percent of pyrrhotite, were cemented in the laboratory. They were then examined microscopically, subjected to unconfined compressive strength tests and assayed. Bonding of these samples is shown to be effected by a matrix of iron oxides mixed with iron sulphates. The main factors governing the strength of the final cemented fill are shown to be: the quantity of pyrrhotite oxidized, the stage to which its iron oxides hydrate and the particle size distribution and chemical composition of the tailing"--Abstract, page ii.

Advisor(s)

Bruzewski, Robert F., 1918-1978

Committee Member(s)

Christie, Carl G., 1906-1972
Rupert, Gerald B., 1930-2016
Spreng, Alfred C., 1923-2012

Department(s)

Mining and Nuclear Engineering

Degree Name

M.S. in Mining Engineering

Publisher

University of Missouri at Rolla

Publication Date

1965

Pagination

vi, 41 pages

Note about bibliography

Includes bibliographical references (page 40).

Rights

© 1965 Stanley H. Alder, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Mine filling
Hydraulic filling
Pyrrhotite

Thesis Number

T 1811

Print OCLC #

5971488

Electronic OCLC #

895058264

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