2018 - Sustainable Industrial Processing Summit & Exhibition
4-7 November 2018, Rio Othon Palace, Rio De Janeiro, Brazil
| Development of an Eco-friendly Tailing Disposal System of Iron Ore Tailing and Study of Issues Rajan Kumar1; Tvs Subramanyam2; G E Sreedhar3; 1, Hyderabad, India; 2BIOCON, Bangalore, Pakistan; 3NMDC LIMITED, Hyderabad, Pakistan; PAPER: 351/Mineral/Regular (Oral) SCHEDULED: 15:55/Tue./Pontal (50/2nd) ABSTRACT: The major environmental impacts from tailing disposal can be divided into two categories: (1) The loss of productive land following its conversion to tailing dump, and (2) the introduction of sediment, acidity, and other contaminants into the ecosystem. The tailing system continues to generate opposition from local communities, the general public, and non-government organizations (NGO). The project was completed as follows: (1) Identification, characterization and settling study; (2) Preparation of synthetic tailing mixtures; (3) Characterization and settling studies; (4) Pressure filtration and paste thickening studies; (5) Study of flow properties of filtered tailings and rheology of thickened (paste) tailings; (6) Assess the transportability of filtered and paste tailings; (7) To evaluate the flow properties and paste rheology (8) Address issues related to the storage and transportation. The project concluded that tailing samples are amenable for paste thickening as well as filtration. It is possible to get a paste with 56-72% solids and yield stress in the range of 75-300 Pa. The tests revealed that it is possible to produce a filter cake with moisture content ranging from 14 to 24%. References: [1] Williams D L, Management of Solid Wastes - Environmental Management in the Australia Minerals and Energy Industries - Principles & Practices [2] Tailing Management - pp 232 - 338, Mining Magazine - May 2002 [3] Thickened Tailings Disposal - pp 7 - 12, Mining Environmental Management -September, 2001 |
