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    SUPERCONDUCTING FIBROUS CRYSTAL AND ITS PRODUCTION
    23.
    发明专利
    SUPERCONDUCTING FIBROUS CRYSTAL AND ITS PRODUCTION 失效

    公开(公告)号：JPH0465395A

    公开(公告)日：1992-03-02

    申请号：JP17712390

    申请日：1990-07-03

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MATSUBARA ICHIRO ,  TANIGAWA HIDEO ,  YAMASHITA HIROSHI ,  OGURA TORU ,  KINOSHITA MINORU ,  KAWAI TOMOJI

    IPC: C01G29/00 ,  C01G1/00 ,  C30B29/22 ,  C30B29/62 ,  H01L39/12

    Abstract: PURPOSE:To raise the critical temp. above the temp. of liq. oxygen by embedding a fibrous crystal having a Bi2Sr2Cu1O6 structure (2201 phase) in a specified oxide powder and heat-treating the powder. CONSTITUTION:The raw materials are mixed so that Bi=1.00, Sr=0.5-1.5, Ca=1.0-3.0, Cu=1.0-5.0 and Pb=0.2-1.0 in the atomic compositional ratio. The mixture is sintered at 800-860 deg.C for 5-100 hr in an oxygen atmosphere and then pulverized to obtain an oxide powder. A fibrous crystal consisting of Bi, Sr, Ca, Cu and O and having a Bi2Sr2Ca1Cu2O8 structure (2212 phase) or a fibrous crystal consisting of Bi, Sr, Cu and O and having a Bi2Sr2Cu1O6 structure (2201 phase) is then embedded in the oxide powder, and the powder is heat- treated at 830-860 deg.C for 50-200 hr to obtain the superconducting fibrous crystal with the atomic compositional ratio expressed by the formula (0

    SUPER CONDUCTOR FIBER-LIKE CRYSTAL AND ITS PREPARATION
    24.
    发明专利
    SUPER CONDUCTOR FIBER-LIKE CRYSTAL AND ITS PREPARATION 失效

    公开(公告)号：JPH03170334A

    公开(公告)日：1991-07-23

    申请号：JP30835689

    申请日：1989-11-27

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MATSUBARA ICHIRO ,  TANIGAWA HIDEO ,  OGURA TORU ,  YAMASHITA HIROSHI ,  KINOSHITA MINORU ,  KAWAI TOMOJI

    IPC: C01G29/00 ,  C01G1/00 ,  C30B29/22 ,  C30B29/62 ,  H01B13/00 ,  H01L39/12

    Abstract: PURPOSE:To improve the processability, flexual strength and critical temperature of the subject crystal by quenching the melted product of a specific composition comprising Bi, Sr, Ca, Cu, Li and O and subsequently heating the solidified product in a stream of O2 gas. CONSTITUTION:A starting raw material consisting of a mixture of Bi, Sr, Ca, Cu, Li and O in a Bi:Sr:Ca:Cu:Li:O atomic ratio of 1.00:(0.5-2.0):(0.5-5.0):(1.0-7.0):(0.1-1.0):(2.5-5.0) is melted at 1100-1250 deg.C for 15-60min, cast on a metal plate and subsequently quenched at a cooling rate of >=10 deg.C/sec to prepare a glassy platelike solidified product having a thickness of approximately 1mm. The solidified product is heated at 810-870 deg.C for 100-300 hours in a stream of a mixture of O2 gas and an inert gas in a stream of the O2 gas to provide a superconductive fiber-like crystal having an atomic composition ratio of the equation (0

    DRY TYPE SCREENING DEVICE FOR PARTICULATE MATERIAL BY DENSITY
    25.
    发明专利
    DRY TYPE SCREENING DEVICE FOR PARTICULATE MATERIAL BY DENSITY 失效

    公开(公告)号：JPH01258780A

    公开(公告)日：1989-10-16

    申请号：JP8777988

    申请日：1988-04-09

    Applicant: AGENCY IND SCIENCE TECHN ,  KYUSHU ELECTRIC POWER

    Inventor： ABE HIDEKAZU ,  HIROSUE HIDEHARU ,  YAMADA NORIYUKI ,  OGAWA KEIZO ,  WATANABE SHIGENORI ,  KINOSHITA MINORU

    IPC: B07B13/11

    Abstract: PURPOSE:To screen particulate material by densities under a dry condition by inclining an oscillation table longitudinally and transversely, providing a weir to the right ends of the many pieces of horizontally laid riffles and stopping the particulate material tending to advance rightward in the grooves between the riffles at said weir. CONSTITUTION:The weir 2 of a required height is spanned from the mid-point on the rear side part of the oscillation table 1 which consists of a rectangular plate-shaped body, is so inclined as to be higher on the right side than on the left side and is so inclined as to be higher on the rear side than on the front side toward the right lower angle part direction. The plural riffles 3 which are smaller in height than the weir 2 are horizontally provided in approximately parallel at approximately the same intervals on the right side of the weir 2. The table 1 is oscillated horizontally at every small periods. As a result, the particulate matter is efficiently screened by densities from the mixture composed of >=2 kinds of the particulate matter of different densities under a dry condition. For example, coal ashes having a lower unburned carbon content are fractionated from coal ashes contg. the unburned carbon content at a substantially high ratio.

    SUPERCONDUCTING FIBROUS CRYSTAL, SINGLE CRYSTAL AND PRODUCTION THEREOF
    29.
    发明专利
    SUPERCONDUCTING FIBROUS CRYSTAL, SINGLE CRYSTAL AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH06107497A

    公开(公告)日：1994-04-19

    申请号：JP27325191

    申请日：1991-09-24

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MATSUBARA ICHIRO ,  OGURA TORU ,  YAMASHITA HIROSHI ,  KINOSHITA MINORU ,  KAWAI TOMOJI

    IPC: C30B29/22 ,  C01G1/00 ,  C30B29/62

    Abstract: PURPOSE:To obtain a superconducting fibrous crystal of Bi2Sr2Ca2Cu3O10 having high critical temp. by burying the fibrous crystal of Bi2Sr2CaCu2O8 structure or the like into an oxide powder having a specific composition containing Li and heat treating. CONSTITUTION:A fibrous crystal composed of Bi, Sr, Ca, Cu and O and having Bi2Sr2CaCu2O8 structure (2212 phase) or a fibrous crystal composed of Bi, Sr, Cu and O and having Bi2Sr2CuO6 structure (2201 phase) is prepared. Next, the fibrous crystal is buried into the oxide power having the atomic composition ratio of Bi=1, Sr=0.5-1.5, Ca=1-3, Cu=1-5, Pb=0.2-1 and Li=0.05-0.25. Next, by heat-treating at 833-845 deg.C, the superconducting fibrous crystal having the atomic composition ratio expressed by the formula (wherein 0

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