著者
矢嶋 澄策
出版者
一般社団法人 資源・素材学会
雑誌
日本鑛業會誌 (ISSN:03694194)
巻号頁・発行日
vol.68, no.770, pp.341-346, 1952-08-25 (Released:2011-07-13)

In this paper, the writer first makes a historical research of mercury mining in Japan.Japan had stbstantial mercury production as early as 7th century, but since then the production showed downward trend and become none in and after 16th century, chiefly due to the lack of geological knowledge and mining engineering. Sine the beginning of this century, a number of new mercury mines were discovered, which brought forth a few tons of mercury only. But the discovery of the Itomuka mine in 1936 changed the whole feature. During the Pacific War, the mercury production in Japan showed peak production of 245 metric tons in 1944, 80 percent of which from the Itomuka mine. But the end of war cut the production sharply again, the Itomuka mine operating only.However, according to the writer's study, it is possible to vaise the production again.The writer states his geological and mineralogical study on the structures and origins of Japan-ese mercury mines, suggests advisable principles for prospection and illustrates profitable methods of mining, dressing and smelting for smaller mines from his 15 years study and experience at Itomuka mine. Then the writer con ludes that Japanese mercury mines, maney but comparably small and low-graded, will be able to meet domestic requirement not in the long future, if they are operated after study of special treatment.
著者
戸田 薫一
出版者
一般社団法人 資源・素材学会
雑誌
日本鑛業會誌 (ISSN:03694194)
巻号頁・発行日
vol.52, no.615, pp.462-475, 1936-07-22 (Released:2011-07-13)

This paper is a brief description of the present state of 3 collieries (Taihei, Taiei, and Siritori), which belong to Karafuto Mining Co., Ltd.
著者
安部 貞次
出版者
一般社団法人 資源・素材学会
雑誌
日本鑛業會誌 (ISSN:03694194)
巻号頁・発行日
vol.52, no.620, pp.924-932, 1936-12-22 (Released:2011-07-13)

The contents described in this paper are detailed descriptions of working face at the present condition, and describe the method of increasing the out put of one face, at Mitui Bibai Colliery.
著者
徳永 惇 栗林 祿郎
出版者
一般社団法人 資源・素材学会
雑誌
日本鑛業會誌 (ISSN:03694194)
巻号頁・発行日
vol.60, no.709, pp.180-184, 1944-05-22 (Released:2011-07-13)

筆者等は先般來各種銅合金屑の電解による分離再生に關する研究を行ひ好結果を得、黄銅屑、青銅屑、白銅屑の電解分離に關する研究報文は既に本會誌に發表したが其後青銅・燐青銅の電解分離の研究實績が得らるるに至つたので茲に其の大要を報告する。青銅を陽極として電解する場合陽極中の錫を陰極に入らしめない様にするのに如何なる條件を選べきかを特に追求しi) 電解液の温度を50~55℃程度に高く保つ事。ii) 電解液物中のH2SO4を30g/L. 程度以下に保つ事。iii) 陽極中に少く共10%程度のZnを含ましめ陽極の分極法防止劑として働かしむる事。等が最も緊要な條件であり、此等の條件を満足せしむれば陽極中に5~10%或はそれ以上のSnを含む場合でも陰極中に入るSnを0.005%以下に抑壓する事が出来る。燐青銅を陽極とする場合は陽極中の燐が液中に入り燐酸錫の疎水性沈澱を作りSnを液相又は膠質懸濁相から除去するから陰極銅の品位は益々良好となる。燐酸曹達を液中に投じても此の好結果が得られる。