India faces the challenge of utilising low grade ore reserves, high energy, operation and production costs, water shortage and increasingly stringent environmental regulations. Coal dry beneficiation technology, ArdeeSort, is one such tool to achieve this and now an accepted viable alternative in Coal Industry to wet beneficiation for thermal grade coals and lignite.
ArdeeSort removes contaminants in coarser sizes (+6/13 mm) using Dual Energy X-ray Transmission Technology (DE-XRT) for identification of contaminants and pneumatic nozzle ejectors for removal of contaminants using compressed air. When the coal particles are subjected to X-rays, each particle is analysed for evaluation of the level of impurity. The impurities once identified, their positions are mapped and signals are sent to high speed pneumatic ejectors. The differentiation between a clean and reject coal is done on the basis of organic composition differentials. The impurities are then blown by an array of ejectors being activated simultaneously in a precisely-controlled fashion. NO WATER IS USED IN THE PROCESS.