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1. 发明专利

JPH11319850A TREATMENT OF BORON-CONTAINING WATER 失效
公开(公告)号：JPH11319850A
公开(公告)日：1999-11-24
申请号：JP12925498
申请日：1998-05-12
申请人： NIPPON LIGHT METAL CO , JAPAN CAPACITOR IND CO LTD , KURITA WATER IND LTD
发明人： MORITA AKIRA , ASAHARA SHOJI , NISHIYAMA FUDE , SHINBA KOZO , ETO YOSHIHIRO , ASADA HIROYUKI
IPC分类号： C02F1/58
摘要： PROBLEM TO BE SOLVED: To provide a process for treating boron-containing water which reduces the consumption of ion exchange resins and chemical agents, efficiently removing boron at a high removal ratio from a high boron concentration water as well as a low boron concentration water containing boron utilizing a small- sized apparatus obtaining a high quality treated water and reducing the amount of sludge output. SOLUTION: This process for treating boron-containing water consists of following steps; treating high concentration boron-containing water 6 and low concentration boron-containing water 13 separately, the high concentration boron-containing water 6 is treated in a first processing tank 1 for adjusting its pH and then evaporation-concentrated in an evaporation concentration apparatus 2 thereby obtaining condensate water 11 and concentrate liquid 12, the condensate water 11 and the low concentration boron-containing water 13 are mixed with each other in a second processing tank 3 and the mixed water obtained is subjected to either an ion-exchange in ion-exchange tank 4 or an flocculation treatment for removing boron thereby obtaining the treated water 17.

2. 发明专利

JPH11319851A TREATMENT OF WATER CONTAINING BORON AND PHOSPHORUS 失效
公开(公告)号：JPH11319851A
公开(公告)日：1999-11-24
申请号：JP12925398
申请日：1998-05-12
申请人： NIPPON LIGHT METAL CO , JAPAN CAPACITOR IND CO LTD , KURITA WATER IND LTD
发明人： MORITA AKIRA , ASAHARA SHOJI , NISHIYAMA FUDE , SHINBA KOZO , ETO YOSHIHIRO , ASADA HIROYUKI
IPC分类号： C02F1/58
摘要： PROBLEM TO BE SOLVED: To provide a process wherein consumption of ion exchange resins as well as chemical agents are reduced, boron and phosphorus are removed efficiently with a high removal rate, using a small-sized apparatus, from high- concn. boron and phosphorus contg. water as well as low-concn. boron and phosphorus contg. water, thereby high quality treated water is obtained and the amount of sludge being formed can be reduced. SOLUTION: High concn. water contg. boron and/or phosphorus in a high concn. 16 and low concn. water contg. boron and/or phosphorus in a low concn. 7 are separately treated, the low concn. water 7 is mixed in a first adjusting tank 1, pre-treated in the pretreatment tank 2 and the pre-treated water is subjected to an ion-exchange in an ion-exchange tank 3 or to an RO-membrane- treatment in an RO apparatus for concentrating boron and phosphorus, the concentrated liquid is mixed with the high concn. water 16 in a second adjusting tank 4, and the mixed liquid is subjected to an aggregation in an aggregation tank 5 and to a solid-liquid separation in a solid-liquid separating tank 6 thereby removing boron and phosphorus therefrom.

3. 发明专利

JP2000178767A SURFACE TREATMENT OF ALUMINUM MATERIAL 失效
公开(公告)号：JP2000178767A
公开(公告)日：2000-06-27
申请号：JP36272998
申请日：1998-12-21
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , SUGIYAMA NOBORU , ASAHARA SHOJI , EGAMI YASUSHI , TANAKA YOSHIRO
IPC分类号： C25D11/04 , C23F1/46 , C23F17/00
摘要： PROBLEM TO BE SOLVED: To provide the method for surface-treating an aluminum material by which the generation of gelled aluminum hydroxide is decreased while lowering the load of industrial chemicals on neutralizing a waste liq., the sulfate radical in the gelled aluminum hydroxide is reduced, and the resources are easily utilized. SOLUTION: In the method for surface-treating an aluminum material having an etching stage and an anodization stage, the waste acidic soln. related to the anodization stage is treated by a normal-type reverse-osmosis device, the sulfuric acid concd. liq. and an aged anodization bath after sulfuric acid is recovered are treated by a sulfuric acid-permeable reverse-osmosis device impermeable to aluminum, the concd. liq. is withdrawn outside the system as an aluminum acid sulfate soln. Meanwhile, the permeated liq. from both reverse- osmosis devices and an alkaline soln. related to the etching stage are introduced into a waste liq. neutralizing stage and neutralized, and the generated gelled aluminum hydroxide is recovered.

4. 发明专利

JPH09249997A TREATMENT OF WASTE LIQUID OF SURFACE TREATMENT OF ALUMINUM MATERIAL 失效
公开(公告)号：JPH09249997A
公开(公告)日：1997-09-22
申请号：JP5570196
申请日：1996-03-13
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , SUGIYAMA NOBORU , EGAMI YASUSHI , ASAHARA SHOJI , TANAKA YOSHIRO
IPC分类号： C02F1/58 , C02F1/52 , C25D11/04 , C25D11/22 , C25D21/18
摘要： PROBLEM TO BE SOLVED: To provide a method for treating the waste liquid of the surface treatment of aluminum materials consisting of aluminum or aluminum alloy which treats the waste maintenance liquid contg. Ni ions inevitably generated at the time of maintenance of a device for constituting the closed circuit to recycle the Ni ions by recovering the Ni ions. SOLUTION: This method is the method for treating the waste liquid discharged from a surface treating stage for the aluminum materials including an electrolytic coloration treatment formed with the closed circuit for recovering and recycling Ni ions by the following manner: The waste maintenance liquid contg. the Ni ions inevitably generated at the time of maintenance of the device for constituting the closed circuit for the electrolytic coloration treatment is discriminated from the inevitable waste surface treating liquid occurring on the other surface treatment exclusive of the electrolytic coloration treatment and is recovered. The waste maintenance liquid is made alkaline by sodium hydroxide and the Ni ions are insolubilized as hydroxide. The insolubilized nickel hydroxide is recovered by sepn. of solid from the liquid. The clean filtrate is used for a neutralization treatment of the waste surface treating liquid.

5. 发明专利

JPS6235995B2 失效
公开(公告)号：JPS6235995B2
公开(公告)日：1987-08-05
申请号：JP6307983
申请日：1983-04-12
申请人： NIPPON LIGHT METAL CO
发明人： ICHIKAWA HACHIRO , SAITO MASAO , ASAHARA SHOJI , SAITO TSUTOMU
IPC分类号： C04B35/65 , C04B35/00 , C04B35/56 , C04B35/573 , C04B35/58 , C04B35/591 , C04B35/63

6. 发明专利

JPH02104459A INJECTION MOLDING SLEEVE OF MOLTEN METAL 失效
公开(公告)号：JPH02104459A
公开(公告)日：1990-04-17
申请号：JP25191388
申请日：1988-10-07
申请人： NIPPON LIGHT METAL CO
发明人： SAITO MASAO , ASAHARA SHOJI , TAKADA KOICHI
IPC分类号： B22D18/02 , B22D17/20 , C04B35/584
摘要： PURPOSE:To improve wear resistance, molten metal resistance and heat insulating characteristic by forming the innermost cylinder of our injection molding sleeve of dense type silicon nitride ceramics which are specified in a fracture toughness value and theoretical density ratio and forming the intermediate layer of porous silicon nitride ceramics specified in thermoelectrical conductivity. CONSTITUTION:The innermost cylinder 2 of the injection molding sleeve 1 for a molten metal is formed of the dense type silicon nitride ceramics which contains 1 to 5pts.wt. Ti or Ti compsn. in terms of Ti per 100pts. silicon nitride and has >=25kg/mm fracture toughness value and >=95% theoretical density ratio. The intermediate cylinder 7 is formed of the porous silicon nitride ceramics which contains 3 to 40pts.vol. alphaSi3N4 fibers and beta-SiC fibers having 0.2 to 5mum wire diameter and 5 to 50mum length per 100 true pts.vol. and has

7. 发明专利

JP2001192867A SURFACE TREATING METHOD FOR ALUMINUM MATERIAL 失效
公开(公告)号：JP2001192867A
公开(公告)日：2001-07-17
申请号：JP2000004451
申请日：2000-01-13
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , SUGIYAMA NOBORU , ASAHARA SHOJI , EGAMI YASUSHI , TANAKA YOSHIRO
IPC分类号： C25D11/06 , C23F1/36 , C23F1/46
摘要： PROBLEM TO BE SOLVED: To provide a surface treating method for an aluminum material by which the amount of gellike aluminum hydroxide formed is reduced, also the radical of sulfuric acid in the gellike aluminum hydroxide is reduced while the burden of industrial chemicals for waste solution neutralizing treatment is reduced, and its conversion into useful resources can be made easy. SOLUTION: In a surface treating method for an aluminum material having an etching stage and an anodic oxidation stage, an acidic waste solution related to the anodic oxidation stage is subjected to reverse osmosis treatment by ordinary type osmosis units, this sulfuric acid concentrated solution is concentrated by an aluminum concentrating device together with an anodic oxidation aged bath after the recovery of sulfuric acid, the concentrated solution is drawn out to the outside of the system as an acidic solution of aluminum sulfate, on the other hand, osmosed solutions from the both reverse osmosis units are introduced into a waste solution neutralizing stage together with an alkaline waste solution related to the etching stage, neutralizing treatment is executed, and the produced gellike aluminum hydroxide is recovered.

8. 发明专利

JP2000144490A SURFACE TREATING METHOD FOR ALUMINUM MATERIAL 失效
公开(公告)号：JP2000144490A
公开(公告)日：2000-05-26
申请号：JP31634198
申请日：1998-11-06
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , SUGIYAMA NOBORU , ASAHARA SHOJI , EGAMI YASUSHI , TANAKA YOSHIRO
IPC分类号： C02F1/44 , C02F1/461 , C02F1/52 , C25D11/04
摘要： PROBLEM TO BE SOLVED: To provide a surface treating method for an aluminum material reducing the amt. of gel-shaped aluminum hydroxide to be generated as much as possible while the burden of industrial chemicals for waste soln. neutralizing treatment is reduce, furthermore reducing sulfuric acid radicals in this gel-shaped aluminum hydroxide as much as possible and capable of facilitating its convertion into useful resources. SOLUTION: In a surface treating method for an aluminum material having an etching stage and an anodic oxidation stage, an acidic waste soln. in relation to the anodic oxidation stage is subjected to reverse osmosis treatment, a sulfuric acid concentrated soln. obtd by this reverse osmosis treatment is circulated to the anodic oxidation stage, furthermore, a permeation soln, obtd. by the reverse osmosis treatment is introduced into a waste soln. neutralizing stage together with an alkaline waste soln. in relation to the etching stage, neutralizing treatment and coagulating sedementation treatment are executed, the concentrated part obtd. by the coagulating sedementation treatment is subjected to modifying treatment under the alkaline condition, and, solid-liq. separation is executed to recover gel-shaped aluminum hydroxide low in sulfuric acid radicals.

9. 发明专利

JPH10216743A TREATMENT OF SURFACE TREATMENT WASTE SOLUTION OF ALUMINUM MATERIAL 失效
公开(公告)号：JPH10216743A
公开(公告)日：1998-08-18
申请号：JP1696597
申请日：1997-01-30
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , SUGIYAMA NOBORU , EGAMI YASUSHI , ASAHARA SHOJI , TANAKA YOSHIRO
IPC分类号： C02F1/62 , C01G51/04 , C22B23/00 , C23F1/46 , C25D21/16
摘要： PROBLEM TO BE SOLVED: To provide a method for treating a surface treatment waste soln. of an aluminum material recovering cobalt metal when a maintenance waste soln. containing Co ions generated in the maintenance of an apparatus constituting a closed circuit of electrolytic coloration treatment is treated and obtaining sludge capable of effectively utilized as an aluminum source. SOLUTION: At a time of the treatment of a waste soln. discharged from a surface treatment process of an aluminum material containing electrolytic coloration treatment having a closed circuit for recovering Co ions to reutilize them formed thereto, the maintenance waste soln. containing Co ions inevitably generated at the time of the maintenance of the apparatus constituting the closed circuit of electrolytic coloration treatment is fractionated from an inevitable surface treatment waste soln. originating from other surface treatment other than electrolytic coloration treatment to be recovered and the maintenance waste soln. is made alkaline by sodium hydroxide to insolubilize Co ions as hydroxide and insolubilized cobalt hydroxide is subjected to solid-liquid separation to be recovered while a clear filtrate is used in the neutralization treatment of the above mentioned surface treatment waste soln.

10. 发明专利

JPH0987863A WASTE LIQUID TREATMENT IN ALUMINUM PRODUCT PRODUCING EQUIPMENT 失效
公开(公告)号：JPH0987863A
公开(公告)日：1997-03-31
申请号：JP24454295
申请日：1995-09-22
申请人： NIPPON LIGHT METAL CO
发明人： MORITA AKIRA , EGAMI YASUSHI , SUGIYAMA NOBORU , ASAHARA SHOJI , TANAKA YOSHIRO
IPC分类号： C02F1/58 , C02F1/52 , C23F1/46
摘要： PROBLEM TO BE SOLVED: To reduce the generation of a waste sludge by recovering Al hydroxide sludge, dissolving the sludge in an alkali regenerated liq., separating the insolubles, introducing the resulting solution into the alkali regenerating stage of a surface-treating process, hydrolyzing the solution along with a waste liq. etchant, separating solid and liq. and using a regenerated liq. as the etchant. SOLUTION: A waste liq. generated in cleaning an Al shaping tool and in Al surface treatment is treated. A hydrogel-like Al hydroxide sludge is recovered at >=pH9 from the waste liq. generated in surface treatment and contg. Al. The Al sludge is dissolved with a shaping tool cleaning waste soln. and the alkali regenerated liq. in surface treatment. Impurities are removed to obtain a refined sludge dissolving liq. The dissolving liq. and a waste liq. etchant are mixed, the mixture is hydrolyzed, and solid and liq. are separated to obtain an alkali regenerated liq. A part of the alkali regenerated liq. is used as the liq. etchant, and the remainder is used in dissolving sludge. Sodium hydroxide is effectively utilized in this way, and crystalline Al hydroxide is recovered.

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