On the Equipment for Gas Analysis of Aluminum in the Plant
1964 Volume 5 Issue 3 Pages 142-146
Details
1964 Volume 5 Issue 3 Pages 142-146
The on-the-spot method of analyzing the gas contained in aluminum and its alloys, as reported in this paper, was conducted by measuring the thermal conductivity with a semi-conductor thermister gas analyzer. By means of this gas analyzer, the author was able to determine the amount of hydrogen evolved during solidification of molten aluminum within ten minutes. The summary of the results obtained is as follows:
(1) With regard to the types of alloys, the amount of the gas evolved increases in the order of 17S, 2S, 75S and 56S, and further the amount of gas evolved is influenced by the proportion of the scraps used.
(2) The proposed method is more effective for analyzing the gas contained in the various alloys than for measuring the gas contained in commercial pure aluminum.
(3) The reaction of pure aluminum with steam is found to be very rapid, and the absorption of hydrogen gas in pure aluminum occurs during melting.
