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61. 发明专利

JP2000005617A HORIZONTAL ULTRAFINE MILL AND METHOD FOR PREVENTING PULVERIZING BALL FROM EFFECTING IDLE STRIKE 失效
公开(公告)号：JP2000005617A
公开(公告)日：2000-01-11
申请号：JP17737198
申请日：1998-06-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： NISHIZAWA KENJI
IPC分类号： B02C17/18
摘要： PROBLEM TO BE SOLVED: To prevent a pulverizing ball from effecting an idle strike in a pulveriz ing space, in a horizontal ultrafine mill comprising an outer cylinder having an outer cylinder vane provided on an inner surface, an inner cylinder having an inner cylinder vane provided on an outer surface and rotated within the outer cylinder, pulverizing balls contained in a pulverizing space between the outer cylinder and the inner cylinder and a slurry discharge box for receiving a slurry discharged from the pulverizing space. SOLUTION: Pulverizing balls are contained in a pulverizing space between an inner cylinder 4 and an outer cylinder 7 which form a mill. The pulverizing space is in communication with a slurry box 13 through a mesh plate 9. The slurry box 13 is provided with a slurry discharge control valve 12 as well as a level gauge 11. The opening of the slurry discharge valve 12 is controlled according to a signal from the level gauge 11 so as to keep the slurry in the slurry discharge box 13 and the pulverizing space at predetermined slurry levels.

62. 发明专利

JPH10174897A PULVERIZING METHOD OF THERMOPLASTIC RESIN 失效
公开(公告)号：JPH10174897A
公开(公告)日：1998-06-30
申请号：JP34124496
申请日：1996-12-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUMOTO SHINJI , NISHIZAWA KENJI , KIRIKIHIRA KATSUHITO
IPC分类号： B02C17/00 , B02C23/06
摘要： PROBLEM TO BE SOLVED: To improve a pulverizing efficiency of resin by wet-pulverizing a thermoplastic resin, whose pulverizing had been conventionally difficult since spreading property and plastic deforming property are strong and a heat resistance is low, together with alcohol. SOLUTION: At the time of pulverizing the thermoplastic resin, the resin is subjected to the pulverizing treatment after immersing previously the thermoplastic resin in alcohol. Or the thermoplastic resin is subjected to the wet- pulverization together with a supersaturated sodium chloride aq. soln. In this way, the pulverizing efficiency is improved without using a freeze pulverization bad in pulverization efficiency and requiring much refrigeration medium cost. The thermoplastic resin is not restricted especially, a high density polyethylene, polyethylene, polypropylene, polyvinyl chloride are exemplified. Then the thermoplastic resin being a starting material is previously pulverized coarsely till 1mm max. grain size preferably. 1-4C alcohol, for example, methyl alcohol, ethyl alcohol, propyl alcohol, etc., is exemplified as the alcohol.

63. 发明专利

JPH1066890A HORIZONTAL ULTRAFINE PARTICLE MILL 失效
公开(公告)号：JPH1066890A
公开(公告)日：1998-03-10
申请号：JP22829496
申请日：1996-08-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUMOTO SHINJI , NISHIZAWA KENJI , UEDA KATSUYUKI , AMANO IWAMARO
IPC分类号： B02C17/18
摘要： PROBLEM TO BE SOLVED: To reduce a discharge load and to increase a supply by arranging supply ports circumferentially in the upper part of a mill main body and forming discharge openings in the lower part of the mill main body in a medium agitation type mill which has an inner cylinder equipped with agitation blades and an outer cylinder and in which the gap between the inner and outer cylinders is filled with milling balls. SOLUTION: Mateiral to be milled supplied from a feeder 2 is introduced into a mill continuously from any of supply ports arranged circumferentially in the upper surface of a mill outer cylinder 5 by a distributor 10. The material is milled by milling balls 7 packed in the gap between inner and outer mill cylinders as a milling medium. Discharge openings 12 formed in the lower part of the inner cylinder 6 are made to be discharge slits 13... arranged in the longitudinal direction. The breadth P of each slit 13, when the diameter of the milling ball 7 is Db, is set up to be a value given by P

64. 发明专利

JPH08196926A HORIZONTAL DRY TYPE MILL 失效
公开(公告)号：JPH08196926A
公开(公告)日：1996-08-06
申请号：JP1376095
申请日：1995-01-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUMOTO SHINJI , YOSHIDA HIROHISA , NISHIZAWA KENJI
IPC分类号： B02C17/04 , B02C17/18
摘要： PURPOSE: To keep positive pressure inside a mill to prevent the inflow of atmosphere, maintain gas atmosphere in the target state and reduce the consumption of atmospheric gas in the case of adjusting the gas atmosphere in a crushing chamber of a horizontal dry type superfine particle mill. CONSTITUTION: Atmospheric gas 22 is injected continuously into a mill 25, and gas carrying a product into a product tank 26 is introduced again into the mill 25 through a bag filter 27 and a moisture-absorption instrument 28. The concentration of oxygen or atmospherice gas in the reintroduced gas is measured by a concentration meter 20, and the injection amount and reintroduced amount of atmospheric gas are controlled based on a measured value.

65. 发明专利

JPH07236835A OPERATION CONTROL OF HORIZONTAL DRY MILL 失效
公开(公告)号：JPH07236835A
公开(公告)日：1995-09-12
申请号：JP2971294
申请日：1994-02-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUMOTO SHINJI , YOSHIDA HIROHISA , NISHIZAWA KENJI , UEDA KATSUYUKI
IPC分类号： B02C17/16 , B02C17/00 , B02C17/18 , B02C25/00
摘要： PURPOSE:To always hold the stagnation amt. of a powder in a mill to a proper range at the time of continuous ultrafine grinding with the use of a horizontal dry mill using grinding balls. CONSTITUTION:Vibrometers 9A, 9B, 9C are arranged to a mill outer wall 1 at a plurality of places in the height direction of a mill to minitor the vibration of the mill outer wall and the abnormal stagnation amt. of the powder in the mill is estimated and detected on the basis of the change of vibration values to perform the operation control of a change in the number of rotations of the mill or a change in the supply amt. of a raw material to keep a good operation state.

66. 发明专利

JPH0552878B2 失效
公开(公告)号：JPH0552878B2
公开(公告)日：1993-08-06
申请号：JP23630684
申请日：1984-11-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： YOSHIDA HIROHISA , SEIKE YAJURO , ICHINOSE TOSHIMITSU , SHOJIMA TOSHIKAZU , NISHIZAWA KENJI
IPC分类号： C10L1/32

67. 发明专利

JPH04341353A OPERATION OF WET TUBE MILL 失效
公开(公告)号：JPH04341353A
公开(公告)日：1992-11-27
申请号：JP11328391
申请日：1991-05-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOHARA TOMIYASU , NISHIZAWA KENJI
IPC分类号： B02C17/00 , B02C17/04 , B02C25/00
摘要： PURPOSE:To discover the clogging of a mesh plate at an early stage, in finely pulverizing particles in a slurry by supplying the slurry and dilution water to a wet tube mill by controlling the concn. of the slurry on the basis of the slurry flow rate difference between the inlet and outlet of the mill. CONSTITUTION:A high concn. slurry and dilution water are mixed and the resulting mixture is supplied to a tube mill 7 from a mill inlet 7a and the particles in the slurry are ground within the mill by balls to obtain ultrafine particles. Subsequently, the slurry is discharged to a collection tank 13 through a mesh plate 8 to be discharged out of the system as a product. At this time, the flow rate of the slurry is detected by a slurry flowmeter 5 and, on the basis of the deviation between the detected value and the flow rate set value calculated by a slurry flow rate regulator 16, the opening degree of a slurry flow rate control valve is controlled. Further, the flow rate value due to a slurry outlet flow rate detector 10 is compared with the comparing reference flow rate value according to an inlet flow rate set value by a flow rate comparing controller and, on the basis of the deviation between both values, a dilution water set value is altered by a ratio setting device 17 to control the opening degree of a dilution water flow rate control valve 4.

68. 发明专利

JPS6234994A PRODUCTION OF COAL WATER SLURRY IN HIGH CONCENTRATION 失效
公开(公告)号：JPS6234994A
公开(公告)日：1987-02-14
申请号：JP17491485
申请日：1985-08-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： SEIKE YAJURO , YOSHIDA HIROHISA , ICHINOSE TOSHIMITSU , NOHARA TOMIYASU , SHOJIMA TOSHIKAZU , NISHIZAWA KENJI , IMAMOTO TOSHIHIKO
IPC分类号： C10L1/32
摘要： PURPOSE:To obtain the titled slurry for fuels, etc., by coarsely crushing coal in water, deashing the resultant slurry in a low concentration, dehydrating the deashed slurry, mixing the dehydrated slurry with water, additive and circulating adjusting slurry to prepare a slurry in a high concentration, dispersing the resultant slurry in a dispersing machine, adjusting the dispersed slurry in a slurry adjusting tank and partially circulating the adjusted slurry. CONSTITUTION:Coal is fed from a coal storage tank 1 to a coarsely crushing mill 5, and water is fed from a feed water tank 3 thereto to coarsely crush the coal in the water and prepare a coal water slurry in a low concentration, which is then deashed in a deashing device 7 and then dehydrated in a dehydrator 10 to give a deashed and dehydrated cake. The resultant cake is further mixed and agitated with adjusting water, additive and return adjusting deashed coal water slurry respectively fed from tanks 14 and 16 and slurry adjusting tank 21 to prepare a kneaded deashed coal water slurry in a high concentration, which is then dispersed in a dispersing machine 19 to uniformly disperse the additive therein and give a coal water slurry in high concentration. The resultant slurry is then adjusted to give a product, partially returned and circulated directly to the mixing agitator 1.

69. 发明专利

JPS6234993A PRODUCTION OF COAL WATER SLURRY IN HIGH CONCENTRATION 失效
公开(公告)号：JPS6234993A
公开(公告)日：1987-02-14
申请号：JP17491385
申请日：1985-08-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： SEIKE YAJURO , YOSHIDA HIROHISA , ICHINOSE TOSHIMITSU , NOHARA TOMIYASU , SHOJIMA TOSHIKAZU , NISHIZAWA KENJI , IMAMOTO TOSHIHIKO
IPC分类号： B02C17/00 , C10L1/32
摘要： PURPOSE:To obtain the titled slurry useful for liquid fuels, etc., by coarsely crushing coal in water, deashing the resultant slurry in a low concentration, dehydrating the deashed slurry, mixing and agitating the dehydrated slurry with adjusting water and additive to prepare a slurry in a high concentration, uniformly dispersing the slurry in a dispersing machine and adjusting the dispersed slurry in a slurry adjusting tank. CONSTITUTION:Coal is fed from a coal storage tank 1 to a coarsely crushing mill 5, and water is fed from a feed water tank 3 thereto to prepare a coal water slurry in a low concentration, which is then deashed in a deashing device 7 and dehydrated in a dehydrator 10 to give a deashed and dehydrated cake. The resultant cake is then led to a mixing agitator 13, and adjusting water and additive are respectively fed from an adjusting water tank 14 and additive tank 16 thereto, mixed and agitated to prepare a kneaded deashed coal water slurry in a high concentration. The resultant slurry is then fed to a dispersing machine 19 to uniformly disperse the additive, and the dispersed slurry is adjusted in a slurry adjusting tank 21 to afford the aimed coal water slurry.

70. 发明专利

JPS6213493A PREPARATION OF AQUEOUS SLURRY OF COAL IN HIGH CONCENTRATION 失效
公开(公告)号：JPS6213493A
公开(公告)日：1987-01-22
申请号：JP15239785
申请日：1985-07-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： ICHINOSE TOSHIMITSU , SEIKE YAJURO , YOSHIDA HIROHISA , SHOJIMA TOSHIKAZU , NISHIZAWA KENJI , IMAMOTO TOSHIHIKO , SUZUKI TOSHIO , GENGO TADASHI , UEMATSU YOSHISHIGE
IPC分类号： B02C17/00 , B01F15/02 , C10L1/32
摘要： PURPOSE:To crush dehydrated cake totally into small lumps, by blowing air jet into dehydrated cake before it is fed into a slurry conditioning tank in the preparation of conc. aqueous slurry of coal by the low-concn. wet process. CONSTITUTION:Coal is crushed in water in a wet mill to produce a low-concn. aqueous slurry of coal. The slurry is dehydrated as it is or after classification to remove coarse particles. Air jet is blown into dehydrated cake for crushing into small lumps as it is made to fall from a dehydrating machine or a dehydrated cake conveyer. The dehydrated cake in small lumps is led into a slurry conditioning tank for mixing with conditioning water and additives to produce a conditioned aqueous slurry of coal in a high concn.

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