ZINC PRODUCTION METHOD USING ELECTRIC FURNACE DUST AS RAW MATERIAL
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United States of America Patent
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N/A
Issued Date -
Jul 28, 2016
app pub date -
Sep 1, 2014
filing date -
Sep 1, 2014
priority date (Note) -
Published
status (Latency Note)
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Abstract
A zinc production method including a chlorination step 101 at which crude zinc chloride vapor 3 and an oxygen gas 2 are obtained by bringing electric furnace dust 1 containing zinc oxide or secondary dust 1 generated at the time of reducing the electric furnace dust in a reduction furnace into contact with a mixed gas containing a chlorine gas 8 and an oxygen-containing gas 10, converting a zinc oxide component in the electric furnace dust 1 or the secondary dust 1 into zinc chloride, and vaporizing the zinc chloride. The zinc production method further includes purification steps 102, 104, and 105 at which a zinc chloride component contained in the crude zinc chloride vapor 3 is separated from components 5 and 7 other than zinc chloride contained in the crude zinc chloride vapor 3 to obtain a purified zinc chloride melt 6, and an electrolysis step 103 at which the purified zinc chloride melt 6 is electrolyzed to obtain a zinc melt 9 and the chlorine gas 8.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KINOTECH SOLAR ENERGY CORPORATION | KAWASAKI-SHI KANAGAWA 212-0013 |
International Classification(s)

- 2014 Application Filing Year
- C22B Class
- 297 Applications Filed
- 251 Patents Issued To-Date
- 84.52 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
IOSAKI, Masaaki | Nagareyama-shi, Chiba, JP | 6 | 4 |
# of filed Patents : 6 Total Citations : 4 | |||
MORI, Shuji | Fujisawa-shi, Kanagawa, JP | 18 | 87 |
# of filed Patents : 18 Total Citations : 87 | |||
SATO, Yuzuru | Sendai-shi, Miyagi, JP | 19 | 314 |
# of filed Patents : 19 Total Citations : 314 |
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Patent Citation Ranking
- 2 Citation Count
- C22B Class
- 36.69 % this patent is cited more than
- 9 Age
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 28, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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