Masters Theses

Deward Pan

Abstract

"The work presented in this thesis is the result of an investigation to develop an economical and successful means for producing a stable, hydration resistant compound on the surface of doloma particles by an acid treatment, which does not significantly alter the refractoriness of the material. Granite, a commercial doloma, from Valley Dolomite Corporation, was treated with different concentrations of inorganic acid-water solutions and organic acid-alcohol solutions for varying time at atmospheric pressure and temperature. The treated doloma was examined by (l) X-ray diffraction and (2) the hydration test.

It was found that the organic acid acted as a coating agent, rather than producing insoluble reaction layers of calcium salt. Phosphoric acid was found to be the most effective, increasing the hydration resistance by about 50-70%.

By X-ray diffraction it was found that there is no loss of magnesium oxide, as a result of the treatment, and evidence was found that a calcium compound was formed on the surface of the particle. Therefore, the treated doloma was stable in the air. The acid treatment is one method for improving the stability of doloma during exposure to the moisture contained in atmospheric air"--Abstract, page vi.

Advisor(s)

Planje, Theodore J., 1919-1980

Committee Member(s)

Moore, Robert E., 1930-2003
Fisher, Emory D.
Nelson, John August

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Ceramic Engineering

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1963

Pagination

vi, 54 pages

Note about bibliography

Includes bibliographical references (pages 50-53).

Rights

© 1963 Deward Pan, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 1450

Print OCLC #

5950189

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