KnE Materials Science
ISSN: 2519-1438
The latest conference proceedings on physical materials, energy materials, electrical materials.
Investigation of Viscose Rayon Manufacturing Sludges, Considered as a Raw Material for Zinc Production
Published date: Sep 03 2017
Journal Title: KnE Materials Science
Issue title: Technogen-2017
Pages: 182-187
Authors:
Abstract:
At treatment of wastewater of viscose rayon’s spinning produces the sediment – zinc-bearing sludge, a humidity content of 66 to 95 %. To date, it is deposited up to 2.5 million cubic meters of zinc-bearing sludge in the ponds of plants in Russia. In the paper chemical composition and particle size distribution of sludge of viscose rayon manufacturing (OJSC “Balakovskoye khimvolokno”, OJSC “Ryazanskoye khimvolokno”, OJSC “Sibvolokno”) are presented. The percentage of zinc in sludge is of 6 to 23 %. Investigations by methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM) are shown, that zinc is present in form of hydroxides, carbonates and silicates. Thermodynamic analysis of zinc dissolution of compounds, found in product of sludge roasting at a temperature of 850ºС, was conducted.
Keywords: Zinc-bearing sludges, viscose, rayon manufacturing wastes, structure, zinc leaching
References:
[1] E. H. M. Moors and G. P. J. Dijkema, “Embedded industrial production systems: Lessons from waste management in zinc production,” Technological Forecasting and Social Change, vol. 73, no. 3, pp. 250–265, 2006.
[2] M. K. Jha, V. Kumar, L. Maharaj, and R. J. Singh, “Studies on Leaching and Recycling of Zinc from Rayon Waste Sludge,” Industrial & Engineering Chemistry Research, vol. 43, no. 5, pp. 1284–1295, 2004.
[3] US3985858 A, Treatment of zinc hydroxide slurry and recovery of zinc-containing product therefrom, 1976.
[4] B. Peng, H.-M. Gao, L.-Y. Chai, and Y.-D. Shu, “Leaching and recycling of zinc from liquid waste sediments,” Transactions of Nonferrous Metals Society of China (English Edition), vol. 18, no. 5, pp. 1269–1274, 2008.
