特殊ばら積貨物輸送の安全性に関する実船実験 : 硫化精鉱の酸化発熱性について

概要

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With regard to the spontaneous heating of the Sulphide Concentrates at the sea transport, the surveys were carried out by the actual ship tests, and the effects of the prevention of heating were discussed. The temperature in concentrates, the temperature and the humidity of air, and the gas components of O_2, CO_2, CO and SO_2 were measured in the holds loading concentrates in the three tests of the two different type ships. Compaction of the concentrate piles by bulldozer, and covering the concentrates by plastic sheets were conducted in order to confirm the prevention of heating in the 2nd test. It is recognized that the spontaneous heating of the concentrates changes with the condition of the navigation and the kinds of concentrates. Especially, it is assumed that the movements of concentrates particles on the slope of the pile oxidize the concentrates, and accelerate heating. Accordingly, the compaction method has the best effects of the prevention of heating, and the covering method is the second. It shall be appreciated that compaction, covering and close of the ventilators are used at the same time. Although the temperature of concentrates at about 25 cm depth is maximum, the phenomena of heating of concentrates are irregular, the probability density function of the temperature is logarithmic normal distribution.
独立行政法人海上技術安全研究所の論文
1979-07-31