发明名称 |
Process for peroxide bleaching wherein the concentrations of Mn and Fe are monitored and maintained |
摘要 |
A process for peroxide bleaching of pulp using magnesium oxide or magnesium hydroxide as a substitute for caustic soda wherein the pulp is bleached in the presence of hydrogen peroxide characterized in that the concentration of ion present in the magnesium oxide or magnesium hydroxide and the pulp is maintained less than 20 ppm and/or the concentration of manganese is maintained less than 10 ppm.
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申请公布号 |
US6524437(B1) |
申请公布日期 |
2003.02.25 |
申请号 |
US19990359330 |
申请日期 |
1999.07.21 |
申请人 |
ORICA AUSTRALIA PTY. LTD. |
发明人 |
VINCENT ADAM HAYDEN;MCLEAN IAN ALEXANDER |
分类号 |
D21C9/16;(IPC1-7):D21C9/16 |
主分类号 |
D21C9/16 |
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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