公开(公告)号：US3911078A

公开(公告)日：1975-10-07

申请号：US29044272

申请日：1972-09-20

申请人： LITTLE INC A

发明人： NADKARNI RAVINDRA M ,  KUSIK CHARLES L ,  MEISSNER HERMAN P

IPC分类号： C01G28/00 ,  C22B1/11 ,  C01B27/00 ,  C01B29/00 ,  C01G29/00 ,  C22B31/00 ,  C22B33/00 ,  C22B37/00

CPC分类号： C22B1/11 ,  C01G28/002 ,  C01P2006/80 ,  Y02P10/234 ,  Y02P10/236

摘要： Method for removing essentially all of the chemically bonded arsenic and antimony from copper sulfide ores. The arsenic and antimony are selectively leached out using Na2S in a basic solution. The resulting Na3AsS4 and Na3SbS4 are converted to the sulfides or to ferric arsenate and ferric antimonate for safe disposal. Sodium and sulfur values are recovered for recycling in the process.

摘要翻译： 从硫化铜矿石中去除基本上所有化学键合的砷和锑的方法。 使用Na 2 S在碱性溶液中选择性地浸出砷和锑。 将所得的Na 3 AsS 4和Na 3 SbS 4转化为硫化物，或转化成砷酸铁和锑酸铁以便安全处理。 在该过程中回收钠和硫的回收利用。

公开(公告)号：US3567379A

公开(公告)日：1971-03-02

申请号：US3567379D

申请日：1968-11-01

申请人： BOLIDEN AB

发明人： HENRIKSSON STEN TYCHO

IPC分类号： C22B30/04 ,  C22B33/00

CPC分类号： C22B30/04

摘要： METHOD AND APPARATUS FOR PRODUCING METALLIC ARSENIC BY REDUCING AN ARSENIC COMPOUND IN GAS PHASE WITH AMMONIA. THE METHOD COMPRISES SUSPENDING ARSENIC TROXIDE IN A STREAM OF AMMONIA AT A TEMPERATURE WHICH CAUSES DECOMPOSITION OF THE AMMONIA BY THE ARSENIC TRIOXIDE AND WHEREIN THE FORMED HYDROGEN REDUCES THE ARSENIC TRIOXIDE TO ELEMENTARY ARSENIC IN A HOMOGENEOUS GAS PHASE REACTION, WHEREAFTER THE GAS MIXTURE IS COOLED AND THE ARSENIC VAPOUR CONDENSED OUT TO CRYSTALLINIC ARSENIC. THE APPARATUS COMPRISES A FEED MEANS FROM WHICH A FINELY DIVIDED ARSENIC COMPOUND IDSTRIBUTED IN A STREAM OF AMMONIA IS METERED TO A REACTOR, WHERE SAID STREAM IS HOMOGENIZED BY VAPORISATION OF THE ARSENIC COMPOUND, A CONDENSER FOR CONDENSING FORMED ARSENIC IN ELEMENTARY CRYSTALLINIC FORM, AND A GAS CLEANING TOWER IN WHICH THE GAS IS CLEANSED OF RESIDUAL ARSENIC.

公开(公告)号：US4097273A

公开(公告)日：1978-06-27

申请号：US794282

申请日：1977-05-05

申请人： Wolfgang H. H. Gunther

发明人： Wolfgang H. H. Gunther

IPC分类号： C01G28/00 ,  C22B3/16 ,  C22B9/00 ,  G03G5/08 ,  C22B33/00

CPC分类号： C22B3/1666 ,  C01G28/001 ,  C22B3/1625 ,  C22B9/00 ,  G03G5/08 ,  Y02P10/234

摘要： Disclosed is a method for the recovery and purification of arsenic/selenium alloys which are contaminated with organic and inorganic materials. The method comprises: A. dissolving the alloy in an aqueous solution of morpholine, piperidine or a lower aliphatic primary or secondary amine which is a solvent for the alloy but a non-solvent for the contaminants therein, B. physically separating the resulting alloy solution from the undissolved contaminants, and C. evaporating the alloy solution to dryness to recover the alloy.

摘要翻译： 公开了用有机和无机材料污染的砷/硒合金的回收和提纯方法。 该方法包括：

公开(公告)号：US3811871A

公开(公告)日：1974-05-21

申请号：US11709871

申请日：1971-02-19

申请人： TAYLOR P

发明人： TAYLOR P

IPC分类号： C22B34/12 ,  C22B34/14 ,  C22B33/00 ,  C22B61/02

CPC分类号： C22B34/1259 ,  C22B34/124 ,  C22B34/1295 ,  C22B34/14

摘要： The oxides of IV B are reduced to their metallic state by first introducing the ore into a liquid containing phosphoric acid, zinc oxide and water. The solution is mixed and calcium carbonate is added. After removal of particles held in suspension by decanting, settling, and returning the solution to the original container, the mixture is brought to a boil. Most of the volatiles are removed by boiling and sodium bicarbonate is added to the mixture, along with water. After the reaction has gone to completion, the solution is again decanted and the remaining material is leached and rinsed, following which it is smelted to the base metal.

公开(公告)号：US4032366A

公开(公告)日：1977-06-28

申请号：US580449

申请日：1975-05-23

申请人： Edward G. Choby, Jr.

发明人： Edward G. Choby, Jr.

IPC分类号： H01F1/18 ,  C21D1/78 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C23C22/00 ,  C23C22/33 ,  C23C22/74 ,  C23C26/00 ,  H01F1/147 ,  C22B33/00 ,  H01F1/04

CPC分类号： H01F1/14783 ,  C21D8/1288 ,  C23C22/74

摘要： A process for producing grain-oriented silicon steel, and the steel produced thereby. The process includes the steps of: preparing a melt of silicon steel; casting the steel; hot rolling the steel; cold rolling the steel; decarburizing the steel; final texture annealing the steel; coating the steel with an aqueous solution comprised of from 4 to 30% of phosphate ion, up to 6% magnesium ion, 5 to 34% colloidal silica and 0.15 to 6% hexavalent chromium; and curing the coated steel at a temperature of at least 1200.degree. F.

公开(公告)号：US3700413A

公开(公告)日：1972-10-24

申请号：US3700413D

申请日：1971-04-26

申请人： WACKER CHEMITRONIC

发明人： BIENERT KLAUS ,  LANG WINFRIED ,  NORDT EGON ,  WEIDNER HERBERT

IPC分类号： C22B30/04 ,  B01D7/00 ,  C22B33/00

CPC分类号： C22B30/04

摘要： PROCESS FOR MAKING EXTRA-PURE ARSENIC WHICH IS PARTICULARLY LOW IN SILICON AND OXYGEN CONTENT, WHICH COMPRISES SUBLIMATING A MASS OF ARSENIC IN THE PRESENCE OF A COMMINUTED SURFACE-ACTIVE OR SURFACE-REACTIVE SUBSTANCE SUCH AS CARBON OR BORON, PREFERABLY IN SPECTRALLY PURE FORM.

公开(公告)号：US3512958A

公开(公告)日：1970-05-19

申请号：US3512958D

申请日：1967-05-01

申请人： MATSUSHITA ELECTRONICS CORP

发明人： YOKOZAWA MASUMI ,  TAKAYANAGI SHIGETOSHI

IPC分类号： C22B30/04 ,  C22C28/00 ,  C22B33/00

CPC分类号： C22C28/00 ,  C22B30/04

公开(公告)号：US3479177A

公开(公告)日：1969-11-18

申请号：US3479177D

申请日：1967-10-19

申请人： MONTEDISON SPA

发明人： VERONICA GIACINTO ,  SIRONI GIUSEPPE ,  COLOMBINI ARIANO

IPC分类号： C22B1/02 ,  C22B1/11 ,  C22B1/14 ,  C21B1/02 ,  C22B33/00

CPC分类号： C22B1/11 ,  C22B1/02 ,  C22B1/14 ,  Y02P10/234