(中南大學(xué) 化學(xué)化工學(xué)院，長(zhǎng)沙 410083)
摘 要: 通過(guò)比較由活化和未活化黃鐵礦在相同種類(lèi)、相同濃度的電解質(zhì)溶液中構(gòu)成原電池的最大電勢(shì)差，確定了活化礦的失效性和最佳活化時(shí)間。實(shí)驗(yàn)結(jié)果表明，經(jīng)機(jī)械活化10min后的黃鐵礦具有更高的能量和活性，隨著電解質(zhì)濃度增加活化礦呈現(xiàn)更大的反應(yīng)活性，且機(jī)械活化后 礦物活性隨擱置時(shí)間增加迅速下降，10天后則完全喪失活性。
關(guān)鍵字: 機(jī)械活化；反應(yīng)活性；失效性；最佳活化時(shí)間
mechanically activated pyrite
ZHANG Ping-min
（College of Chemistry and Chemical Engineering，
Central South University，Changsha 410083, China）
Abstract:The expiration properties and the optimal activation time of mechanically activated pyrite was deduced by measuring the maximal potential difference of the galvanic cell in the same electrolyte with the activated pyrite and the unactivated pyrite as the electrode material respectively.The results show that the mechanically activated pyrite possesses higher energy and ac tivation after activating for 10min,and this is more obvious with increasing concentration of electrolyte. Its activation rapidly drops with increasing laying time and loses completely for ten days.
Key words: mechanical activation；reactive activation； expiration properties；optimal activation time
