New technology for recyclingmaterials from oily cold rollingmill sludge

Bo Liu, Shen-gen Zhang, Jian-jun Tian, De-an Pan, Ling Meng, Yang Liu

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    Cite this article as:

    Bo Liu, Shen-gen Zhang, Jian-jun Tian, De-an Pan, Ling Meng, and Yang Liu, New technology for recyclingmaterials from oily cold rollingmill sludge, Int. J. Miner. Metall. Mater., 20(2013), No. 12, pp.1141-1147. https://dx.doi.org/10.1007/s12613-013-0847-8
    Bo Liu, Shen-gen Zhang, Jian-jun Tian, De-an Pan, Ling Meng, and Yang Liu, New technology for recyclingmaterials from oily cold rollingmill sludge, Int. J. Miner. Metall. Mater., 20(2013), No. 12, pp.1141-1147. https://dx.doi.org/10.1007/s12613-013-0847-8
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    New technology for recyclingmaterials from oily cold rollingmill sludge

    基金项目: 

    supported by the National Key Technology R&D Program of China (Nos.2012BAC02B01, 2012BAC12B05, 2011BAE13B07, and 2011BAC10B02)

    the National Natural Science Foundation of China (Nos.51174247 and 51004011)

    the Ph.D. Programs Foundation of the Ministry of Education of China (No.2010000612003)

    the National High-Tech Research and Development Program of China (No.2012AA063202)

    the Science and Technology Program of Guangdong Province, China (No.2010A030200003)

    Oily cold rolling mill (CRM) sludge is one of metallurgical industry solid wastes. The recycle of these wastes can not only protect the environment but also permit their reutilization. In this research, a new process of “hydrometallurgical treatment + hydrothermal synthesis” was investigated for the combined recovery of iron and organic materials from oily CRM sludge. Hydrometallurgical treatment, mainly including acid leaching, centrifugal separation, neutralization reaction, oxidizing, and preparation of hydrothermal reaction precursor, was first utilized for processing the sludge. Then, micaceous iron oxide (MIO) pigment powders were prepared through hydrothermal reaction of the obtained precursor in alkaline media. The separated organic materials can be used for fuel or chemical feedstock. The quality of the prepared MIO pigments is in accordance with the standards of MIO pigments for paints (ISO 10601-2007). This clean, effective, and economical technology offers a new way to recycle oily CRM sludge.

     

    New technology for recyclingmaterials from oily cold rollingmill sludge

    Author Affilications
    • Funds: 

      supported by the National Key Technology R&D Program of China (Nos.2012BAC02B01, 2012BAC12B05, 2011BAE13B07, and 2011BAC10B02)

      the National Natural Science Foundation of China (Nos.51174247 and 51004011)

      the Ph.D. Programs Foundation of the Ministry of Education of China (No.2010000612003)

      the National High-Tech Research and Development Program of China (No.2012AA063202)

      the Science and Technology Program of Guangdong Province, China (No.2010A030200003)

    • Received: 31 May 2013; Revised: 09 August 2013; Accepted: 12 August 2013;
    Oily cold rolling mill (CRM) sludge is one of metallurgical industry solid wastes. The recycle of these wastes can not only protect the environment but also permit their reutilization. In this research, a new process of “hydrometallurgical treatment + hydrothermal synthesis” was investigated for the combined recovery of iron and organic materials from oily CRM sludge. Hydrometallurgical treatment, mainly including acid leaching, centrifugal separation, neutralization reaction, oxidizing, and preparation of hydrothermal reaction precursor, was first utilized for processing the sludge. Then, micaceous iron oxide (MIO) pigment powders were prepared through hydrothermal reaction of the obtained precursor in alkaline media. The separated organic materials can be used for fuel or chemical feedstock. The quality of the prepared MIO pigments is in accordance with the standards of MIO pigments for paints (ISO 10601-2007). This clean, effective, and economical technology offers a new way to recycle oily CRM sludge.

     

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