Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Determining Vapor Density and Gaseous Diffusion Coefficients of Sb2s3 Using a Modified Transpiration Apparatus.

Authors
Madsen-BW; Adams-A; Romans-PA
Source
MISSING :14 pages
Link
NIOSHTIC No.
10003098
Abstract
A modified transpiration apparatus was devised by the Bureau of Mines to permit rapid and accurate measure of the vapor transport and vapor diffusion coefficients of antimony sulfide (sb2s3) and other compounds at temperatures to 1,045 k. The apparatus was equipped with dual condensers and valves to switch the flow of vapor in a fraction of a second from one condenser to the other, thus allowing short-interval sampling under equilibrium conditions. Reliability of the technique was established by measuring the vapor pressure of zncl2 as a function of temperature and comparing the results with published data. As part of an investigation of the vapor concentrations and species of accessory element sulfides associated with copper and zinc smelting, the apparatus was used to measure the rate of vapor transport and diffusion coefficients of vapor over liquid sb2s3 as a function of temperature between 870 and 1,045 k. The calculated vapor density was combined with published direct measurements of vapor pressure to calculate the average molecular weight of the gaseous species. Average molecular weight of the vapor in equilibrium with sb2s3 ranged from 286 to 112 g/mol over the temperature range studied.
Publication Date
19830101
Document Type
IH; Report of Investigations
Fiscal Year
1983
NTIS Accession No.
NTIS Price
Identifying No.
RI 8812
NIOSH Division
ALRC;
Source Name
MISSING
TOP