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- W3044573268 abstract "Abstract Hard coal is an important source of energy worldwide. Owing to the imperfections of excavation technology, most run-of-mine coals must be processed before they can be utilised as fuel. In this study, tests on the dry separation process were performed with numerous different raw hard coal and coal waste material samples, using a newly designed and constructed negative-pressure pneumatic separator (NPPS). The experiments revealed the effects of the feed-material properties and material processing conditions. These experiments were preceded by additional tests for evaluating the influence of each device operating parameter on the process, to determine the optimal method of supplying the feed material. The calorific value of the processed materials was improved by 5%–40%, while a minimal output yield of products (60%–70%) was maintained. The trials indicated that in coal material processing, the developed NPPS can be used for not only raw coal enrichment but also coal recovery from materials stored at coal-waste dumps. The main advantages of the device are its mobility, low material processing cost, and lack of water consumption during operation. Graphic abstract" @default.
- W3044573268 created "2020-07-29" @default.
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- W3044573268 date "2020-07-23" @default.
- W3044573268 modified "2023-10-14" @default.
- W3044573268 title "Negative-pressure pneumatic separator: a new solution for hard-coal beneficiation" @default.
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- W3044573268 doi "https://doi.org/10.1007/s40789-020-00345-w" @default.
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