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1. 发明专利

JP2004130222A Method for classifying foreign matter in soil 审中-公开
公开(公告)号：JP2004130222A
公开(公告)日：2004-04-30
申请号：JP2002297378
申请日：2002-10-10
申请人： Kokan Kogyo Kk , 鋼管鉱業株式会社
发明人： NOSUMI NOBUO , YAMASHITA DAIJI , HANAMURA HITOSHI , MITSUZAWA SHINJI
IPC分类号： B07B4/02 , B07B4/04
摘要： PROBLEM TO BE SOLVED: To provide a classification method for efficiently classifying foreign matter and soil from a large amount of polluted soil containing foreign matter with good classifying accuracy.
SOLUTION: The classification method has the first process of classifying polluted soil into classified matter mainly comprising foreign matter and soil by a wind-force classification apparatus and the second process of further classifying the classified matter mainly comprising foreign matter by the wind-force classification apparatus. The second process is performed at least once until desired classifying accuracy is obtained. The wind-force classifying apparatus is equipped with a charging hopper in which polluted soil is charged, a feeder for feeding and charging the soil into air streams from the charging hopper and a jet nozzle for generating air streams for classifying foreign matter from the soil. The feeder is excited in an obliquely upward direction with respect to the soil charging direction. The jet nozzle is preferably a flat nozzle and arranged in every process, preferably subjected to cascade arrangement to eject air streams in a horizontal or obliquely upward direction from the area below the leading end part of the feeder.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004057901A Sorting recovery method for metal piece included in soil 审中-公开
公开(公告)号：JP2004057901A
公开(公告)日：2004-02-26
申请号：JP2002218231
申请日：2002-07-26
申请人： Kokan Kogyo Kk , 鋼管鉱業株式会社
发明人： NOSUMI NOBUO , YAMASHITA DAIJI , HANAMURA HITOSHI , MITSUZAWA SHINJI
IPC分类号： B09C1/00 , B07B1/00 , B07B4/02 , B07B9/00 , B09C1/04
摘要： PROBLEM TO BE SOLVED: To propose an efficient method for sorting soil and metal pieces recovering the metal pieces from polluted soil including the metal pieces.
SOLUTION: The polluted soil, after being excavated, is collected in a provisional storage site by pneumatic transportation. After that, the polluted soil, after being sieved by a sieving machine, is sorted into soil and the metal pieces by a pneumatic separator. For raising workability, the polluted soil is formed into blocks 50 mm or smaller in diameter by the pneumatic transportation. After that, the polluted soil is crushed into blocks 10 mm or smaller in diameter by the sieving machine. When solids are included in the polluted soil, a crusher is installed in the sieving machine to be used as required.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004130220A Wind-force classification apparatus 审中-公开
公开(公告)号：JP2004130220A
公开(公告)日：2004-04-30
申请号：JP2002297376
申请日：2002-10-10
申请人： Kokan Kogyo Kk , 鋼管鉱業株式会社
发明人： NOSUMI NOBUO , YAMASHITA DAIJI , HANAMURA HITOSHI , MITSUZAWA SHINJI
IPC分类号： B07B4/02
摘要： PROBLEM TO BE SOLVED: To provide a wind-force classification apparatus for efficiently classifying foreign matter and soil from a large amount of polluted soil containing foreign matter with good classifing accuracy.
SOLUTION: The wind-force classification apparatus is equipped with a means for charging a definite amount of the polluted soil containing foreign matter in air streams per a unit time and a jet nozzle forming air streams for classifying foreign matter from the polluted soil. As the charging means, a charging hopper in which the soil containing foreign matter is charged and a feeder, which is excited in an obliquely upward direction with respect to a soil charging direction to feed and charge the soil in air streams from the charging hopper, are provided. The angle θ of inclination of the charging hopper is not less than 50° and the interval between to charging hopper and the feeder is not less than 15 mm. The jet nozzle is arranged so as to eject air streams in a horizontal or obliquely upward direction from the area below the leading end part of the feeder and desirably comprises a flat nozzle.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004130221A Wind-force classification apparatus 审中-公开
公开(公告)号：JP2004130221A
公开(公告)日：2004-04-30
申请号：JP2002297377
申请日：2002-10-10
申请人： Kokan Kogyo Kk , 鋼管鉱業株式会社
发明人： NOSUMI NOBUO , YAMASHITA DAIJI , HANAMURA HITOSHI , MITSUZAWA SHINJI
IPC分类号： B07B4/02
摘要： PROBLEM TO BE SOLVED: To provide a wind-force classification apparatus for efficiently classifying foreign matter and soil from a large amount of polluted soil containing foreign matter with good classifying accuracy.
SOLUTION: The wind-force classification apparatus is equipped with a means for charging a definite amount of the polluted soil containing foreign matter in air streams per a unit time and a jet nozzle for forming air streams for classifying foreign matter from the polluted soil. As the charging means, a charging hopper in which soil containing foreign matter is charged and a feeder, which is excited in an obliquely upward direction with respect to a soil charging direction to feed and charge the soil in air streams from the charging hopper, are provided. The angle θ of inclination of the charging hopper is not less than 50° and the interval between the charging hopper and the feeder is not less than 15 mm. The jet nozzle is desirably a flat nozzle and the flow velocity of the ejected air streams becomes 5-60 m/sec when the air streams, which are ejected in a horizontal or obliquely upward direction from the area below the leading end part of the feeder from the jet nozzle, collide with the soil.
COPYRIGHT: (C)2004,JPO

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