E/MJ : engineering and mining journal . in general, as the Cottrell plant, starting a MAIN TREATER OF .\SHIO SMELTERY WITH CURRENT ON equipment, was erected according to the design andsuggestions of the International Precipitation Co., inOctober, 1916. The tests were conducted by theengineers of the Metallurgical Research Institute,who were assisted by F. B. Church and K. I. Mar-shall, engineers of the International Precipitation test treater proved satisfactory, treating themixed gases coming from tiie roasting pots, blastfurnaces and converters of the copper smeltery, andprecipitating
E/MJ : engineering and mining journal . in general, as the Cottrell plant, starting a MAIN TREATER OF .\SHIO SMELTERY WITH CURRENT ON equipment, was erected according to the design andsuggestions of the International Precipitation Co., inOctober, 1916. The tests were conducted by theengineers of the Metallurgical Research Institute,who were assisted by F. B. Church and K. I. Mar-shall, engineers of the International Precipitation test treater proved satisfactory, treating themixed gases coming from tiie roasting pots, blastfurnaces and converters of the copper smeltery, andprecipitating the dust, containing oxides of arsenic,zinc and lead, and a small amount of copper. Among the mines and smelteries, the Ashio coppersmeltery of the Furukawa Mining Co. was the firstto apply the results of these important tests. Thepipes and electrical equipment were at onL<3 orderedfrom American manufacturers and foundations werebegun. The Asano Portland Cement Co., of Tokyo, washaving considerable trouble with the residents of the. ?Excerpt from a pamphlet published by Kinzoku Kogryo Kenkyusho, Ichome, Kojimachi-ku, Tokyo, Japan, MAIN TliUVTER OF ASHIO SMELTERY. ELECTRICAL CURRENT OFF few days before the specified time, caught more than95 per cent of the dust causing the nuisance. Thus, thelong-pending problem was solved satisfactorily toall concerned. It was one of the striking examplesin Japan where engineering science has contributedto the welfare of the nation and the advancement ofindustry. To perfect designs of Cottrell installations forprospective customers and to study the actual opera-tion of installations in the United States, the Metal-lurgical Research Institute sent its engineer, KiyoshiShiga, to the offices of the International Precipita-tion Co., of Los Angeles, where he studied the de-sign and operation of precipitators. In May, 1917,after completing his study, Mr. Shiga was joined byDr. Ritaro Hirota, the manager of the ElectricalPrecipitati
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
