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公开(公告)号：US3737305A
公开(公告)日：1973-06-05
申请号：US3737305D
申请日：1970-12-02
Applicant: ALUMINUM CO OF AMERICA
Inventor： BLAYDEN L , BRONDYKE K , SPEAR R
CPC classification number: C22B9/055 , C22B21/066
Abstract: THIS IS A IMPROVEMENT IN A MOLTEN ALUMINUM REFINING PROCESS OF THE TYPE DESCRIBED IN U.S. PAT.3,039,864 WHERE A NON-REACTIVE FLUXING GAS IS PASSED THROUGH MOLTEN ALUMINUM AS IT MOVES THROUGH A BED OF REFRACTORY BODIES TO REMOVE FROM THE ALUMINUM HYDROGEN GAS AN NON-METALLIC IMPURITIES SUCH AS OXIDES. ACCORDING TO THE IMPROVEMENT A RELATIVELY SMALL STREAM OF A REACTIVE CHLORINACEOUS FLUXING GAS INTRODUCED ALONG WITH THE NON-REACTIVE FLUXING GAS SUBSTANTIALLY INCREASES THE USEFUL LIFE OF THE REFRACTORY BODY BED. THE PROCESS IS CAPABLE OF CHLORINE FUME-FREE OPERATION.
D R A W I N G-
2.发明授权Prevention of bonding of aluminum powder metallurgy parts during sintering by separating the parts with oxidized particulate aluminum 失效通过用氧化的颗粒状铝分离零件来防止烧结期间的铝粉末冶金部件的接合
公开(公告)号：US3796566A
公开(公告)日：1974-03-12
申请号：US3796566D
申请日：1972-06-26
Applicant: ALUMINUM CO OF AMERICA
Inventor： BRONDYKE K , DUDAS J
CPC classification number: C22C1/0416
Abstract: Use of particles of aluminum having an oxide coating obtained by active oxidation thereof to prevent sticking together of aluminum powder metallurgy parts stacked or piled during sintering.
Abstract translation: 使用具有通过其活性氧化获得的氧化物涂层的铝颗粒，以防止在烧结期间堆叠或堆积的铝粉末冶金部件粘在一起。
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公开(公告)号：US3737304A
公开(公告)日：1973-06-05
申请号：US3737304D
申请日：1970-12-02
Applicant: ALUMINUM CO OF AMERICA
Inventor： BLAYDEN L , BRONDYKE K , SPEAR R
IPC: C22B21/06
CPC classification number: C22B21/066
Abstract: THE SODIUM OXIDE AND HYDROGEN CONTENT OF MOLTEN ALUMINUM IS DRASTICALLY REDUCED BY MOVNG THE MOLTEN ALUMINUM THROUGH TWO PURIFYING ZONES. IN EACH ZONE THE MOLTEN ALUMINUM IS MOVED THROUGH A BED OF REFRACTORY BODIES IN CONTACT WITH FLUXING GASES. CONDITIONS ARE CAREFULLY MAINTAINED TO REMOVE IMPURITIES WHILE PREVENTING DETERIORATION OF THE BEDS. THE PROCESS CAN BE OPERATED ON A POLLUTION FREE BASIS AND YET ACHIEVE EXTREMELY LOW IMPURITY LEVELS.
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公开(公告)号：US3737303A
公开(公告)日：1973-06-05
申请号：US3737303D
申请日：1970-12-02
Applicant: ALUMINUM CO OF AMERICA
Inventor： BLAYDEN L , BRONDYKE K , SPEAR R
CPC classification number: C22B21/066 , B22D43/004
Abstract: THE SODIUM CONTENT OF MOLTEN ALUMINUM ALONG WITH THE OXIDE AND HYDROGEN GAS CONTENT, IS REDUCED BY AN IMPROVED PROCESS WHEREIN THE MOLTEN ALUMINUM IS PASSED THROUGH A BED OF REFRACTORY BODIES. THE REFRACTORY BODIES HAVE THEIR SURFACES ACTIVATED BY CHLORINE AND ARE REACTIVE TO THE SODIUM IMPURITIES. THE REFRACTORY BODY BED IS CONTINUOUSLY FLUSHED WITH A NON-REACTIVE GAS FUX TO REMOVE CHLORINE REACTION PRODUCTS FORMED IN THE BED. THE IMPROVEMENT IS CAPABLE OF CHLORINE FUME-FREE OPERATION AND ACCORDINGLY IS ESPECIALLY USEFUL WHERE POLLUTION CONTROL IS IMPORTANT.
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