巻号一覧
後続誌
前身誌
73 巻, 827 号
選択された号の論文の11件中1～11を表示しています
- |<
- <
- 1
- >
- >|
-
第74次通常総会における会長挨拶岡部 楠男1957 年 73 巻 827 号 p. 269-270
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーPDF形式でダウンロード (336K) -
堀部 富男1957 年 73 巻 827 号 p. 271-275
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーIn this study the author used the specimens of rock samples brought from the Joban Colliery, namely Goyasu and Asagai Sandstones, and examined the items mentioned on the title.
Then the main results were as follows.
1) Both strengths were lowered with the increment of the water content and existed the exponential relation between them.
2) As the temperature of specimen was lowered, for example at-100°C, the wet sample showed the excessive increase of strengths, but the dry sample didn't so.抄録全体を表示PDF形式でダウンロード (3243K) -
出水状態の観測および対策について佐藤 進1957 年 73 巻 827 号 p. 277-283
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリー以上出水状態の観測および若干の考察を述べてきたが, これを要約すると次のとおりとなる。
(1) 切羽出水をもたらす含水層は, 本層下約30mから50mに至る間の厚さ約20mの粗粒砂岩群と思われる。これと本層炭との間の約30mはcap rockとなつていると思われる。
(2) この湧水は化学的に特徴顕著な塩水で, 化石水と思われる。またCl濃度は含水層の深度に比例して増加し, また一出水孔についても時間の経過とともに上昇し, ついで下降を示している。
(3) 出水量も深度の増加につれて増大し, 一出水孔はおのおの特有の双曲線に近いdecline curveをもつて減衰している。
(4) 地表淡水および白亜系からの補給はないと思われる。双曲線近似の減衰曲線を描くということはここの化石水はかなりせまく局限された区域内を移動しうるだけで, 遠く移動することはないらしい-という意味で局限水量と考えてよさそうだ。
(5) 出水をもたらす水は含水層のfissure中に貯留されている水であり, 水の流動も主としてこのfissureを通じて行われるものであろう。
(6) これらの水は採掘に伴う計画的な水抜を行うことによつて経済的な管理が可能であろう。そのためにまず試験的な水抜井によつて各種の資料を検討することが必要である。抄録全体を表示PDF形式でダウンロード (1236K) -
山崎 豊彦, 阿部 良之助1957 年 73 巻 827 号 p. 285-288
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーIn the previous paper, the relation between the existence of gas in coal seam and the coalification speed was discussed.
In this paper, it was examined about the amount of evolved gas from Taiheiyo coal and its composition, when the coalification was advanced under the various constant temperature and time.
The results of the experiments showed that the amount of gas from coal was the function of the tested temperature and time, moreover, was considerably increased beyond 300°C. And it was assured that the gas in coal seam was contained the many hydrocarbons as methane, ethane, propane, and other heavy hydrocarbons from the results of following experiments which compared with each components of the artificial coalification gas and the natural free gas from the coal seam about the so rank of coal that the fuel ratio was over 1.0.抄録全体を表示PDF形式でダウンロード (669K) -
1957 年 73 巻 827 号 p. 288
発行日: 1957年
公開日: 2011/07/13
ジャーナル フリーPDF形式でダウンロード (194K) -
向井 滋, 森川 薫淳1957 年 73 巻 827 号 p. 289-294
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーTo make the floatability of fine mineral particles clear, an attempt has been made to determine the relation between the flocculation of fine particles and their floatability.
Electrolytes (NaCl, AgNO3, CuSO4, ZnSO4 and Na-alginate) have been added as flocculant and then the flocculation of fine particles of zincblende has been observed through the photometer and the floatability of -1μ and 150-300mesh particles of zincblende has been determined by the flotation testing.
The results of the experiments are as follows.
(1) The floatability of 150-300 mesh particles is nearly the maximum but the floatability of -1μ particles is extremely low in the wide range of pH in the pulp.
(2) The floatability of -1μ particles is extremely low when the mineral particles are dispersed in the pulp but their floatability rises nearly the highest when the flocculation is stimulated by adding the electrolytes in the pulp.
(3) The floatability of 150-300 mesh particles is extremely high in the wide range of concentration of the electrolytes. Therefore the effect of the electrolytes used in this experiment, on the coarse particles is not so remarkable as no the fine particles.抄録全体を表示PDF形式でダウンロード (3554K) -
爆発現象について吾妻 潔, 後藤 佐吉, 亀谷 博1957 年 73 巻 827 号 p. 295-300
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーIt has been noted that the molten matte occationally explodes in a converter when a wet charge is dropped in it. The writers investigated this explosion phenomenon in laboratory scale, that was caused. by letting water droplets fall on the surface of the molten matte (artificially prepared cuprous sulfide). A bellow was attached to the top of the reaction vessel. The vibration of the bellew caused by the explosion was amplified by a beam of the light and recorded on a film arround a rotating drum.
The result is as follows.
1. The explosion did not take place in the test apparatus with the first drop of water, but did with the second or the third.
2. The temperature of the matte had to be above 1200°C to explode.
3. The intensity of the explosion was sensitively affected by the experimental conditions, for instance, the condition of the surface of the matte.
4. The explosion took place easily in the oxidizing atomosphere but not in the inert gas.
5. The copper grade of the matte (Cu2S) had little effect on the explosion.抄録全体を表示PDF形式でダウンロード (3712K) -
膠および塩酸添加の効果について今井 直, 八嶋 舜一1957 年 73 巻 827 号 p. 301-305
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーWe have investigated the effect of addition agents by measuring the cathode polarization using Haring Cell, and have got results as follows.
(1) The diminution of gelatine in electrolyte was caused by hydrolysis and electric adsorption of geoatine, and the latter was more remarkable in the case of practical refining.
(2) During electrodeposition of copper at above 1.5A/dm, the slopes of DK-E curves were smaller in case of electrolytes containing both gelatine and hydrochloric acid than in case of that containing gelatine alone. The addition of both gelatine and hydrochloric acid increased “throwing power” of copper electrolytes.抄録全体を表示PDF形式でダウンロード (822K) -
選鉱專門委員会1957 年 73 巻 827 号 p. 307-323
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーPDF形式でダウンロード (2773K) -
1957 年 73 巻 827 号 p. 325-339
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーPDF形式でダウンロード (8156K) -
世界動力会議統計年報第8巻より1957 年 73 巻 827 号 p. 339
発行日: 1957/05/25
公開日: 2011/07/13
ジャーナル フリーPDF形式でダウンロード (201K)
- |<
- <
- 1
- >
- >|