Fabrication of cost effective iron ore slime ceramic membrane for the recovery of organic solvent used in coke production

• Published in: International journal of coal science & technology 2016-06, Vol.3 (2), p.226-234
• Main Authors: Singh, V., Meena, N. K., Golder, A. K., Das, C.
• Format: Article
• Language: English
• Subjects: Coal; Coke; Energy; Fabrication; Fossil Fuels (incl. Carbon Capture); Geotechnical Engineering & Applied Earth Sciences; Industrial wastes; Iron compounds; Iron ores; Mineral Resources; N-甲基吡咯烷酮; Organic solvents; Research Article; Slime; Solvents; Sulfur; 低成本; 制备; 十二烷基硫酸钠; 有机溶剂回收; 泥膜; 焦炭生产; 铁矿石
• ISSN: 2095-8293; 2198-7823
• DOI: 10.1007/s40789-016-0130-5

Improvement of coking properties of sub-bituminous coal （A） and bituminous coal （B） was done using blended organic solvents, namely, n-methyl-2-pyrrolidinone （NMP） and ethylenediamine （EDA）. Various solvent blends were employed for the coal extraction under the total reflux condition. A low-cost ceramic membrane was fabricated using industrial waste iron ore slime of M/s TATA steel R＆D, Jamshedpur （India） to separate out the dissolved coking fraction from the solvent-coal mixture. Membrane separations were carried out in a batch cell, and around 75 % recovered NMP was reused. The fractionated coal properties were determined using proximate and ultimate analyses. In the case of bituminous coal, the ash and sulfur contents were decreased by 99.3 % and 79.2 %, respectively, whereas, the carbon content was increased by 23.9 % in the separated coal fraction. Three different cleaning agents, namely deionized water, sodium dodecyl sulphate and NMP were used to regain the original membrane permeability for the reusing.