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| Study on the Basic Properties of OCC Pulping Sludge |
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| DOI：10.11980/j.issn.0254-508X.2014.04.002 |
| Key Words:OCC pulping sludge basic properties elemental analysis infrared analysis thermogravimetric analysis |
| Fund Project:陕西省重点实验室科研项目（12JS021）；陕西科技大学研究生创新基金。 |
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| Abstract:Basic properties of OCC pulping sludge were analyzed, including water content, pH value, particle size distribution of wet sludge, and organic material content, ash content, fiber content, lignin content in dried sludge. At the same time, the microtopography, elemental composition, chemical properties, and thermal properties of OCC pulping sludge were researched with optical microscopy, scanning electron microscopy-energy dispersive spectrometer（SEM-EDS）, Fourier transform infrared spectroscopy （FT-IR） and thermogravimetric analyzer. The results showed that OCC pulping sludge had highash content, which mainly was mineral fillers （calcium carbonate and a small amount of kaolin） and organic material （fiber and lignin）. Therefore it had good application prospects as the filler for paper, thermoplastic composite materials, and also in building materials （bricks, cement, etc.）, land improvement, gardens or parks, and landfill cover materials. |
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