Negative-pressure pneumatic separator:a new solution for hard-coal beneficiation
Kamil Stańczyk
Andrzej Bajerski
Marian J.??czny
Central Mining Institute,Plac Gwarków 1,40-166 Katowice,Poland
摘要：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.
机标关键词：
论文发表日期：2021-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：21( 103-123 )
英文信息