本文選題：硫化礦石　切入點：自熱過程　出處：《中國有色金屬學(xué)報》2015年02期

【摘要】：為揭示硫化礦石自熱過程的分形特征,以從現(xiàn)場采集的礦石樣品作為實驗材料,開展礦石自熱特性實驗,集成小波技術(shù)和分形理論對實測溫度數(shù)據(jù)進(jìn)行研究。結(jié)果表明:僅礦樣1、2、3和8出現(xiàn)明顯自熱現(xiàn)象,自熱起始溫度分別為136.3、178.5、195.4和200℃,在正常采礦條件下,礦石不易產(chǎn)生自熱現(xiàn)象;礦樣自熱過程具有穩(wěn)定的關(guān)聯(lián)維數(shù),驗證了基于分形理論研究自熱過程的可行性;在實驗條件基本一致的前提下,隨著自熱起始溫度的增大,礦樣自熱過程的關(guān)聯(lián)維數(shù)逐漸減小,可采用關(guān)聯(lián)維數(shù)來定性判斷自熱傾向性強(qiáng)弱;自熱效果明顯的礦樣,其實驗后期的關(guān)聯(lián)維數(shù)大于實驗前期的值,因此,可根據(jù)關(guān)聯(lián)維數(shù)的變化特征來判定礦樣出現(xiàn)明顯自熱的可能性,從而可減少重復(fù)實驗的工作量。
[Abstract]:In order to reveal the fractal characteristics of the self-heating process of sulfide ores, the ore samples collected from the field were used as experimental materials to carry out experiments on the self-heating characteristics of ores. The data of measured temperature are studied by integrating wavelet technique and fractal theory. The results show that only 1 / 2 / 2 / 3 and 8 ore samples have obvious self heating phenomena, the starting temperature of self heating is 136.3178.55.4 鈩，

本文編號：1662002