文献一覧: 日本鑛業會誌 (雑誌)

1 0 0 0 加圧浮選法による微細な赤鉄鉱とデイッカイトの分離

著者: 吉川逸治松岡功下飯坂潤三
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.102, no.1180, pp.369-373, 1986

The flotation separation of hematite and dickite finer than 2μm has been investigated by using a pressure type and a Denver type flotators.Flotation tests were carried out by activating dickite with calcium chloride, followed by adding sodium oleate as a collector. In both pressure type and Denver type flotation, the separation of dickite from hematite was not achieved, because the addition of calcium chloride increased the floatability of hematite as well as dickite.However, in the case of the pressure type flotation, dickite could be selectively floated from hematite by adding Proper amounts of Separan AP30 (an anionicpolymeric flocculabt) and sodium oleate in the presence of asmall amount of calcium chloride at pH 8 to11. 5.The selective flotation of dickite from hematite by the pressure type flotation may be explained by the following reasons: the preferential adsorption of calcium species on dickite occurs due to its cation exchangeability in the presence of a small amount of calcium chloride at moderately alkaline pH and then hydrophobic flocs of dickite is formed as the result of the increased adsorption of Separan AP30 and oleate ion on the calcium activated dickite surface.The best separation result was obtained at low pulp density of about 1%.

2022-01-18 18:45:05
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1 0 0 0 幌別鑛山の現況

著者: 三崎復造
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.53, no.625, pp.278-281, 1937

2021-09-14 21:05:03
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1 0 0 0 異種金属接触による銅電解精製時のAg溶解抑制

著者: 糟野貴史北田敦下川公博邑瀬邦明
出版者: 一般社団法人資源・素材学会
雑誌: 日本鑛業會誌 (ISSN:18816118)
巻号頁・発行日: vol.130, no.2, pp.65-69, 2014
被引用文献数: 6

Electrolytic copper contains, on average, 10 ppm silver as impurity, which leads to a loss of silver as a cashcow product for copper smelters.Most of silver included in blister copper anodes passes into anode slime when electrolyzed, keeping the elemental state. However, once a part of elemental silver dissolves from the anode or from anode slime for some reason, then silver can co-deposit with electrolytic copper cathode, since silver is nobler than copper. In the present work, the dissolution behavior of silver from anode slime was examined by using granular silver as a model of the slime.We have shown that the silver dissolution is caused by dissolved oxygen in the electrolyte, and that thiourea and/or chloride ions as usual additives play a role to suppress the silver dissolution approximately to two thirds.Moreover, it was found that the dissolution of silver was suppressed to less than 1ppm by galvanic contacting of the granular silver with less noble metals (Pb or Cu) immersed in the same electrolyte. This indicates that the use of Pb or Cu lining at the bottom of electrolytic cells can suppress silver dissolution from the anode slime settled to the bottom, reducing the silver loss to electrolytic copper.

2021-09-10 01:45:06
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1 0 0 0 CO2の循環と地中貯留に関わる課題および総合的地域エネルギーシステムの提案

著者: 佐々木久郎スサントベリーアンガラフェリアンヨセフサザビィアミン菅井裕一川村太郎児玉孝雄松嶋慶祐
出版者: 一般社団法人資源・素材学会
雑誌: 日本鑛業會誌 (ISSN:18816118)
巻号頁・発行日: vol.131, no.8, pp.503-508, 2015
被引用文献数: 2

The development and advancement of new technologies have been considered for carbon fixation and its effective utilization as being indispensable for the achievement of greenhouse gas emissions reduction targets without adversely impacting economic growth in the world. Among such technologies, the one considered to present the greatest potential in terms of both of feasibility and CO2 reduction, as well as offering a relatively low cost burden, is CO2 capture, usage and geological storage (CCUS). The costs of CO2 recovery present a barrier to carry the CCS and CCUS project. Large-scale project models for carbon sequestration, recovery and underground storage that involve the construction of long-distance pipelines have been either implemented or planned in North America and Australia, etc., but such projects are not well matched to the land conditions of Japan. The development of Japanese-style CO2 sequestration, recovery and underground storage technologies is required that ensures linkage in a compact and high economical way among local area-based CO2 recovery, storage or fixation processes and also energy supply. In this article, the concept<tt>"</tt> Low-Carbon Smart Cities<tt>"</tt> have been proposed with some technical challenges that can be solved by research developments with including environmental monitoring. This concept is targeted for areas with relatively high population density and where land use constraints are in place. By applying the resulting model to the situation in Southeast Asian countries, which have similar land conditions and also possess coal resources, the aim is to combine and integrate the local environment with the provision of carbon-free energy and realize CO2 reduction with greater economic efficiency.

2021-08-05 15:30:06
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1 0 0 0 選鑛研究會開催の發議

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.44, no.513, pp.82, 1928

2021-06-28 21:00:33
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1 0 0 0 β-アルミナ固体電解質を用いたSO2ガスセンサの固体参照極について

著者: 杉本栄佑幸塚善作
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.104, no.1200, pp.89-95, 1988
被引用文献数: 2

The present study was done for the purpose of finding any available solid reference electrode for SO2sensor employingbeta alumina solid electrolyte. In this paper, we tried a few experiments for this sensor using two solid reference electrode, (β+β')-alumina and (α+β)-alumina. The cells used were as follows: Pt, (β+β')-alumina in air/β'-alumina/Na2SO4/SO2+O2+SO3, Pt (1) Pt, (α+β)-alumina in air/β-alumina/Na2SO4/SO2+O2+SO3, Pt (1)(11) From the present experiments, the following conclusions were obtained. 1) The constant sodium activities in these solid reference electrodes were maintained for a long duration of the experiment. 2) For both cells, good straight lines were obtained between e.m.f.'s and log Pso2 within the temperature ranges from 933 to 1230 K in the cell (1) and from 932 to 1278 K in the cell (11). Especially, in the (β+β')-alumina solid reference electrode, it was shown that the cell using this electrode could be employed to determine concentrations up to a few ppm of SO2 gases at temperatures of 932 to about 1100 K. Consequently, this (β+β')-alumina mixture is recommended for the solid reference electrode ofSO2 sensor employingβ'-alumina solid electrolyte. 3) From e.m.f.'s of these cells, the activities of Na2O in β-Al2O3+β'-Al2O3and α-Al2O3+β-Al2O3coexistences were respectively calculated by considering thermochemical data and compared with the others.

2021-06-09 18:30:06
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1 0 0 0 OA 金貨の製造附古今東西の金貨の要項

著者: 廣瀬亜夫
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.49, no.578, pp.510-520, 1933-06-22 (Released:2011-07-13)

In this paper the author deals with the gold coins with special reference to the Japanese specification of the gold coinage.With detailed explanation the following items are treated on the gold coins:(1) the Japanese regulation of coinage, (2) history of the coinage institution, (3) production, (4) weight and grade, (5) course of coinage ration, (6) amelioration of irregular brittleness of gold bullion, (7) gold coins in olden times and (8) table of the gold coinage in countries of the world.

2021-02-21 21:56:27
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1 0 0 0 亜鉛製錬残渣の硫酸鉛優先浮選による操業改善

著者: 彦坂忠義孫田裕美久米井正紀
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.101, no.1166, pp.222-227, 1985

2020-09-03 14:12:17
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1 0 0 0 黒鉱選鉱技術上の問題点に関する2, 3の知見

著者: 今泉常正彦坂忠義
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.83, no.946, pp.349-353, 1967

2020-09-03 14:12:17
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1 0 0 0 樺太に於ける樺太鑛業株式會社經營の炭礦現況

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

This paper is a brief description of the present state of 3 collieries (Taihei, Taiei, and Siritori), which belong to Karafuto Mining Co., Ltd.

2020-09-01 18:53:14
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1 0 0 0 名取川水系の重金属類の環境評価に関する調査及び数理統計解析

著者: 中村謙吾佐藤海里川辺能成桑谷立駒井武
出版者: 一般社団法人資源・素材学会
雑誌: 日本鑛業會誌 (ISSN:18816118)
巻号頁・発行日: vol.132, no.1, pp.22-30, 2016
被引用文献数: 2

It is important to understand the distribution mechanism of heavy metal elements in environmental systems, because the toxicities of various metals and metalloids significantly affect health risks. The heavy metals concentrations are controlled by a wide of variety environmental factors. This study aims to clarify main influence factors on the heavy metal distribution in sediment, soil, river in the Natori River, Sendai City. We firstly produced geochemical maps for heavy metal concentrations (As, Pb and Cr) of river sediment, neighboring soil (bulk component, soluble component in 1N HCl and in pure water) and river water. The heavy metals concentrations in river water increase from upper stream to down stream, whereas heavy metal concentrations in river sediments and soil vary little from upper stream to downstream. There are no anomalous distributions of heavy metals in the studied area, although many anthropogenic materials are found in sediment, soil and river water. The correspondence analysis was applied to investigate relationships of heavy-metal concentrations between sediment, soil and river water. The results indicate that the heavy metals (As, Pb Cr and Zn) in sediment, soil and river water are dominantly controlled by natural sedimentary processes, such as denudation and sedimentation. The proposed method could be further applied for other pollutants in various environment systems. From a viewpoint of risk assessment of heavy metals, it is suggested by the presence of closer relationship of heavy metals that contains the risk information of heavy metals.