发明名称 |
PROCESS FOR PRODUCING LOW-SODA ALUMINA, APPARATUS THEREFOR, AND ALUMINA |
摘要 |
A process for producing a low-soda alumina comprising calcining aluminum hydroxide in a calciner in the presence of a soda-removal agent, wherein the alumina dust produced in the calciner is sorted by particle size and collected in a dust collector and at least a portion of the collected alumina dust is subjected to a soda-removal process and is then returned to the calciner. An apparatus for producing a low-soda alumina, comprising a calciner for calcining aluminum hydroxide in the presence of a soda-removal agent, by which alumina dust is produced; a unit connected to the calciner for collecting, by particle size, the alumina dust; a unit for removing soda from a slurry containing at least a portion of the collected alumina dust; and a circuit for returning the soda-removed alumina dust back into the calciner. ® KIPO & WIPO 2007 |
申请公布号 |
KR20070028423(A) |
申请公布日期 |
2007.03.12 |
申请号 |
KR20067026545 |
申请日期 |
2006.12.15 |
申请人 |
SHOWA DENKO KABUSHIKI KAISHA |
发明人 |
KIMURA KIICHI;KOMIYA TAKAYOSHI |
分类号 |
C01F7/02;B01J6/00;C01F7/44;C01F7/46;C04B35/10 |
主分类号 |
C01F7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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