Classifications

• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
  • C22B19/00—Obtaining zinc or zinc oxide
  • C22B19/20—Obtaining zinc otherwise than by distilling
  • C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
  • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
  • B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
  • B23H1/022—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges for shaping the discharge pulse train
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
  • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
  • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
  • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P10/00—Technologies related to metal processing
  • Y02P10/20—Recycling

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Geology (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Materials Engineering (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Inorganic Chemistry (AREA)
• Geochemistry & Mineralogy (AREA)
• Manufacture And Refinement Of Metals (AREA)
• Manufacture Of Iron (AREA)
• Compounds Of Iron (AREA)
• Manufacture Or Reproduction Of Printing Formes (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19879797

Family Applications (1)

Country Status (11)

Families Citing this family (1)

• 1970
  • 1970-09-30 NO NO03703/70A patent/NO126679B/no unknown
• 1971
  • 1971-04-10 DE DE2117584A patent/DE2117584C3/de not_active Expired
  • 1971-04-16 NL NLAANVRAGE7105172,A patent/NL173660C/xx not_active IP Right Cessation
  • 1971-09-20 GB GB4377871A patent/GB1364868A/en not_active Expired
  • 1971-09-27 CA CA123,702A patent/CA960470A/en not_active Expired
  • 1971-09-28 JP JP7572171A patent/JPS55450B1/ja active Pending
  • 1971-09-29 BE BE773283A patent/BE773283A/xx not_active IP Right Cessation
  • 1971-09-29 FR FR7135095A patent/FR2108114B3/fr not_active Expired
  • 1971-09-29 AU AU34007/71A patent/AU463865B2/en not_active Expired
  • 1971-09-29 SU SU1701585A patent/SU391780A3/ru active
  • 1971-09-29 ES ES395532A patent/ES395532A1/es not_active Expired

Also Published As

Similar Documents