发明名称 |
Process to produce sodium sulfate and magnesium hydroxide |
摘要 |
This invention refers to a novel process to obtain magnesium hydroxide and sodium sulfate from a solid raw material, which contains sodium and magnesium soluble salts, preferably in the form of sulfates, coming from a natural source or as a byproduct of an industrial process. The process consisting in the conditioning of the raw material to guarantee the correct concentrations of sodium and magnesium sulfates that is subjected to a salting-out crystallization when mixed with sodium sulfate obtaining sodium sulfate; the resulting solution is subjected to an alkali treatment to precipitate the magnesium hydroxide and the mother liquor is fed to a regeneration stage of the alkali used in the precipitation of the magnesium hydroxide as well in the sodium sulfate solution for the crystallization. The crystallization can be performed as a multistage process countercurrent to increase the purity of sodium sulfate. |
申请公布号 |
US8658122(B2) |
申请公布日期 |
2014.02.25 |
申请号 |
US20070599325 |
申请日期 |
2007.12.14 |
申请人 |
MARTINEZ MARTINEZ JESUS MANUEL;GARCIA LOPEZ ARMANDO;BOCANEGRA ROJAS JOSE GERTRUDIS;BENAVIDES PEREZ RICARDO;SERVICIOS ADMINISTRATIVAS PENOLES S.A. DE C.V. |
发明人 |
MARTINEZ MARTINEZ JESUS MANUEL;GARCIA LOPEZ ARMANDO;BOCANEGRA ROJAS JOSE GERTRUDIS;BENAVIDES PEREZ RICARDO |
分类号 |
C01D5/02;C01F5/14 |
主分类号 |
C01D5/02 |
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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