2.
    发明专利
    未知

    公开(公告)号:DE69501265T2

    公开(公告)日:1998-05-20

    申请号:DE69501265

    申请日:1995-01-20

    Abstract: Carbon nanotubes are produced by successively repositioning an axially extending rod-like carbonaceous anode (6) relative to a cathode surface (2a) such that a tip end surface of the anode (6a) successively faces on different portions of the cathode surface while impressing a direct current voltage therebetween, so that an arc discharge occurs with the simultaneous formation of carbonaceous deposits containing carbon nanotubes on each of the portions of the cathode surface. The carbonaceous deposits are scraped and collected. A device for carrying out the above method includes a driving member (5) for displacing the cathode surface relative to the anode.

    PRODUCTION OF ARTIFICIAL LIGHT-WEIGHT AGGREGATE WITH VERTICAL KILN

    公开(公告)号:JPH0193449A

    公开(公告)日:1989-04-12

    申请号:JP24876487

    申请日:1987-09-30

    Abstract: PURPOSE:To obtain an artificial light-weight aggregate satisfying excellent economicity as well as light aggregate weight, by adding inorganic powder having low apparent specific gravity to a main raw material composed of a clay mineral waste having self-sustaining combustibility, forming the mixture into a prescribed form and subjecting the product to self-sustaining combustion in a vertical kiln. CONSTITUTION:100pts.wt. of a main raw material composed of a clay mineral waste having self-sustaining combustibility (e.g. deposited sludge or coal ash) optionally added with 1-3% of pulp spent liquor or dust coal is added with 2-10pts.wt. of inorganic powder having low apparent specific gravity (

    TITANIUM BASE METALLIC MATERIAL HAVING THICK FILM OF TITANIUM OXIDE AND ITS PRODUCTION

    公开(公告)号:JP2000064023A

    公开(公告)日:2000-02-29

    申请号:JP23106698

    申请日:1998-08-18

    Abstract: PROBLEM TO BE SOLVED: To produce a titanium base metallic material having an oxide film having a sufficient film thickness and firmly adhered to the titanium base metallic material being a base material and to provide a method for producing it. SOLUTION: This titanium base metallic material has a titanium oxide film having 10 to 150 μm thickness in at least a part of the surface. In the method for producing the titanium base metallic material having the titanium oxide film, the titanium base metallic material is heated in the air to form a titanium oxide film having >=5 μm thickness at least in a part of the surface of the material, and, thereafter, heating is executed by high-frequency induction heat plasma using an inert gas as a working gas.

    PRODUCTION OF METAL OXIDE AEROGEL

    公开(公告)号:JPH10130003A

    公开(公告)日:1998-05-19

    申请号:JP3375897

    申请日:1997-02-18

    Abstract: PROBLEM TO BE SOLVED: To obtain an aerogel of an excellent bulk body free from the generation of shrinkage and crack by holding a wet gel body of a metal oxide, a solvent and a specific material under a prescribed condition and removing the solvent to dry the wet gel body. SOLUTION: The wet gel body of the metal oxide (e.g. a silica wet gel body obtained by impregnating the gel body, which is obtained by mixing tetramethoxysilane with a methanol/ammonia water, pouring to a prescribed shaped vessel and allowing to stand, with methanol to remove an unreacted component), the solvent (e.g. methanol) and a granular zeolite having preferably 2-3mm average particle diameter are held under the critical condition or super critical condition (e.g. 280 deg.C 140atm) of the solvent preferably for 1-3hr and after that, the solvent is gradually released and removed to dry the wet gel body.

    METHOD FOR BURNING GRANULATED ARTICLE OF COAL ASH

    公开(公告)号:JPH03131551A

    公开(公告)日:1991-06-05

    申请号:JP26820689

    申请日:1989-10-17

    Abstract: PURPOSE:To obtain a high-quality artificial light-weight aggregate in a high yield by measuring softening characteristics of coal ash which becomes a main raw material and deciding a burning temperature based on the measured data in burning of a granulated article of coal ash. CONSTITUTION:In a burning method of a granulated material of coal ash carried out by laminating the granulated article of coal ash on a moving grate of a burning furnace isolated from atmosphere and burning the granulated article while forming a stream passing through the layer from the upper side to lower side, softening characteristics of coal ash which becomes a main raw material of the granulated article are measured and the granulated material is burned at a temperature capable of giving shrinkage ratio of the granulated article corresponding to 5-60% of maximum shrinkage ratio (shrinkage ratio in softening temperature).

    HYDROGENATION CATALYST AND ITS PRODUCTION

    公开(公告)号:JP2000246110A

    公开(公告)日:2000-09-12

    申请号:JP5327099

    申请日:1999-03-01

    Abstract: PROBLEM TO BE SOLVED: To provide a hydrogenation catalyst comprising a non-carried powder and its producing method. SOLUTION: Cobalt sulfide is previously comminuted, molybdenum sulfide is added and they are mixed and comminuted to produce the objective hydrogenation catalyst comprising molybdenum sulfide and cobalt sulfide mixed powder. In other way, nickel sulfide is previously comminuted, molybdenum sulfide is added and they are mixed and comminuted to produce the objective hydrogenation catalyst comprising molybdenum sulfide and nickel sulfide mixed powder.

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