{'fraction_non_alphanumeric': 0.06933744221879815, 'fraction_numerical': 0.06933744221879815, 'mean_word_length': 4.038759689922481, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Physical separation using an autogenous medium on coal

ABSTRACT The dry beneficiation for 1–5 and 5–10-mm-size coal using an air table was investigated. Separation was conducted using autogenously formed media in the feed coal. The separation density was around 1.8–2.0 g/cm3 and the average Ep (Ecart Probability) value ranged from 0.08–0.1 for the 5–10-mm fraction, to around 0.1–0.12 for the 1–5-mm fraction. For the 5–10-mm fraction, the feed ash decreased from 44% to 8.4% in the clean coal product, with 89.5% ash rejection rate in the rejects. For the 1–5-mm fraction, the feed ash decreased from 33.7% to 9.4%, and the reject ash was 88.7%.