日本鉱業会誌

ワイヤロープの耐衝撃性の劣化

立田瀾, 佐藤治海, 牧野豊

1965 年 81 巻 923 号 p. 287-293
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_287

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It is said that shock load will causes winding ropes to break finally, therefor under shock condition, the shock absorbing capacities (=deformation energies) must be concidered necessary for safety and durability of winding ropes.
We studied the impact value of the corroded and weared wire ropes used in coal mines by mean of impact tensile breaking test.
From the test results, the following conclution were obtained.
The impact value of old winding ropes were more influenced and decreased by the decrement of effective sectional area than by that of static tensile strength.

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坑内保安バトローラの開発に関する研究

鈴木俊夫, 松隈喜総, 今上一成, 菅野昭雄

1965 年 81 巻 923 号 p. 295-301
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_295

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The Mine Safety Patroller is designed to automatize underground safety operations. To make the telemetering of underground environments and central control system possible, the inductive radio telemetering system been studied. Two types of the telemetering instruments have been developed. One of them is a stationary instrument, and the other is an automatic traveling instrument which we call Mine Safety Patroller.
The Mine Safety Patroller travels along a ropeway or a monorail installed in underground gallery. This instrument which is essentially equipped with a mechanism of the telemetering, can continuously measure the methane concentration and the temperature in the main body of the air in underground, and can give an alarm if a preset level is exceeded. The signals from the measuring instruments are transmitted by the system as change in the frequency to a central control room in the surface. This instrument (SIK-5 type) consists of:(1) Patroller, (2) Observation and control desk and (3) Driving gear.

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ロータリキルンによるラテライトのソーダ焙焼について

古井健夫, 首藤俊春

1965 年 81 巻 923 号 p. 302-307
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_302

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The authos have studied on the sodium roasting and the water leaching for the separation of chromium and alminium from lateritic iron ores.
Basic roasting conditions for chromium removal were obtaind by preliminary experiment, and this result was applied to the rotary kiln and leaching equipment of laboratory scale.
The results obtained were as follows:
(1) The rotary kiln was the proper furnace for this object. High chromium and alminium separation rates were obtained under the roasting temperature of 1, 000-1, 050°C, the atmosphere of 10% O₂ and the mixing ratio of 15-20% Na₂CO₃.
(2) The addition of CaO was undesirable for the roasting of lateritic iron ores, by reason of the Na contents in leached ore was increased, and the ring of burden was grown at the high temperature zone in the kiln.
(3) Removal of Na in leached ore and establishment of economical operation are the remainded problem and must be solved hereafter.

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Nb₂O₅およびTa₂O₅の塩素化における2, 3の性質

馬場利一, 今川耕治, 木内俊二

1965 年 81 巻 923 号 p. 308-312
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_308

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Samples used in this experiment were Nb₂O₅, Ta₂O₅ and (Nb·Ta) ₂O₅ that were precipitated from aquous solution and calcined at different temperature.
For examining these samples in presence of carbon, the method fo continuous weigting in flowing chlorine was used, at continuously elevating temperature or constant temperature.
Experimental results obtained are as follows;
(1) On chlorination of Nb₂O₅ and Ta₂O₅, the higher the treating temperature of their oxides is, the higher the starting temperature of reaction becomes. In general, it seems to correspond considerably to their polymorphism.
(2) In the experimental range of Nb₂O₅-Ta₂O₅ system, the starting temperature of reaction is elevated continuously from Nb₂O₅ side to Ta₂O₅ side according to its composition.
(3) The rate of chlorination of the oxides may depend considerably on the temperature at which the oxides are prepared.
Apparent activation energy of chlorination in the, range of this experiment is described.

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月500m以上の掘進能率をあげる方法

外尾善次郎

1965 年 81 巻 923 号 p. 313-321
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_313

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西ドイツ, フランス, ベルギーおよびイギリスの炭じん対策 (その2)

1965 年 81 巻 923 号 p. 323-329
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_323

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石炭問題とエネルギー問題を聞く

1965 年 81 巻 923 号 p. 330-339
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_330

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摘録

1965 年 81 巻 923 号 p. 340-350
発行日: 1965/03/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.923_340

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