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Solidifying comprehensive recovery method of electroplating sludge ferrite
The invention relates to a solidifying comprehensive recovery method of electroplating sludge ferrite. The sludge is heated, so that sticky organic matters in the sludge can be hydrolyzed at a continuously constant temperature of 80 DEG and under the weak alkaline condition of pH 9.2, and then the colloid structure of the sludge can be broken and the dewaterability of the sludge can be improved; the solidifying comprehensive recovery method comprises the specific steps of sludge melting and acid pickling, sludge-water separation, regulating the pH value to 9.2 and stirring evenly, stirring at the speed of 45r/min and heating, when the temperature of the mixed solution reaches 80 DEG C, heating at the constant temperature of 80 DEG C for 2 hours without stirring, generating magnetic black Fe3O4 crystals in the solution at last, separating the Fe3O4 crystals in the solution by use of a magnetic separator, and obtaining the Fe3O4 crystal relatively high in purity after separation. The solidifying comprehensive recovery method of the electroplating sludge ferrite has the beneficial effect that the ferrite solidified product has the characteristics of stable solidification, magnetism, further productization and the like.
Solidifying comprehensive recovery method of electroplating sludge ferrite
The invention relates to a solidifying comprehensive recovery method of electroplating sludge ferrite. The sludge is heated, so that sticky organic matters in the sludge can be hydrolyzed at a continuously constant temperature of 80 DEG and under the weak alkaline condition of pH 9.2, and then the colloid structure of the sludge can be broken and the dewaterability of the sludge can be improved; the solidifying comprehensive recovery method comprises the specific steps of sludge melting and acid pickling, sludge-water separation, regulating the pH value to 9.2 and stirring evenly, stirring at the speed of 45r/min and heating, when the temperature of the mixed solution reaches 80 DEG C, heating at the constant temperature of 80 DEG C for 2 hours without stirring, generating magnetic black Fe3O4 crystals in the solution at last, separating the Fe3O4 crystals in the solution by use of a magnetic separator, and obtaining the Fe3O4 crystal relatively high in purity after separation. The solidifying comprehensive recovery method of the electroplating sludge ferrite has the beneficial effect that the ferrite solidified product has the characteristics of stable solidification, magnetism, further productization and the like.
Solidifying comprehensive recovery method of electroplating sludge ferrite
SUN YICHAO (author) / ZHANG ZESHENG (author) / FENG HUI (author) / WANG ZHIYUAN (author) / WANG SENWEI (author) / DING YE (author) / SU ZHILONG (author)
2015-06-10
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
SOLIDIFYING AGENT COMPOSITION FOR SLUDGE AND MANUFACTURING METHOD THEREOF
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