Physical and chemical changes of sulphides during intensive grinding in organic liquids

被引：7

作者：

Balaz, P ^{[1
]}

Mockovciakova, A ^{[1
]}

Boldizarova, E ^{[1
]}

Ficeriova, J ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Geotechn, Kosice 04353, Slovakia

来源：

POWDER TECHNOLOGY | 1998年 / 98卷 / 01期

关键词：

grinding; sulphide; alcohol; surface area; amorphization;

D O I：

10.1016/S0032-5910(98)00038-2

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The properties of different sulphides (chalcopyrite-CuFeS2, pyrite-FeS2, galena-PbS, tetrahedrite-Cu12Sb4S13, stibnite-Sb2S3) which were ground in a planetary mill in polar alcohols containing: 1-5 carbon atoms (methanol, ethanol, n-butanol, i-butanol, n-propanol, i-propanol and i-amyl alcohol) were studied. Tt was found that the maximal increase of specific surface area can be achieved by milling in organic liquids with high mu/V values (mu, dipole moment; V, molecular volume). A high degree of sulphide structure disordering can be achieved if organic liquids with a higher molecular density are employed. The results of the increase in specific surface and structured disordering were related to the Vicker's hardness of the investigated sulphides. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：74 / 78

页数：5

共 14 条

[1]

ANTHONY J.W., 1990, Handbook of Mineralogy, VI

[2]

CHODAKOV GS, 1972, PHYSICS COMMINUTION

[3] PHYSICOCHEMICAL ASPECTS OF GRINDING - A REVIEW OF USE OF ADDITIVES [J].