A new technology for recycling scrap mine tires
A huge amount of tires are consumed in large surface metal mines where several thousand of tons of ore are moved daily by fleets of high capacity trucks.A number of these tires are used for constructing a protection barrier along the rim of pits roadways but most of them are stockpiled or disposed of in landfills.However considerable problems arise due to the bulkiness of the tires as well as to their pollution potential especially in presence of acid mine drainage. Therefore the alternative option of dismantling and possibly recycling and reusing both the rubber and the reinforcing wire-frame seems preferable from both the operational and economic point of view.Waterjet can be a suitable technology for this to be achieved. A series of tests have been made on conventional car tires with the aim of obtaining useful correlations of rubber removal rate as a function of the relevant operational parameters (pressure and water flow, nozzle velocity,stand-off distance).As for big tires,the approach of using a plain waterjet issued by a rotating nozzle head is not profitable due to the high energy consumption and a too long time needed for their complete disintegration.. A more suitable strategy would consist in using an abrasive suspension jet for cutting off the rubber thread and shoulders that can be shredded using conventional comminution technologies.
Mining Tires Recycling Waterjet
R.Ciccu A.Bortolussi N.Careddu
Department of Geoengineering and Environmental Technologies IGAG,National Research Council University of Cagliari,Italy
国际会议
北京
英文
231-243
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）