CAJ | 학술논문

研究了酸浸法对煤矸石组分的浸取效果,利用正交试验确定了酸浸法从煤矸石中浸取氧化铝的最佳因子,并讨论了各因子对氧化铝浸出率的影响,确定了矸石粒度0.15 mm,煅烧温度780℃,煅烧时间2 h,盐酸质量分数15%,液固比6∶1,浸取温度50℃,浸取时间3 h为最佳浸出条件,并得到在此条件下氧化铝的浸取率为67.4%.
연구료산침법대매안석조분적침취효과,이용정교시험학정료산침법종매안석중침취양화려적최가인자,병토론료각인자대양화려침출솔적영향,학정료안석립도0.15 mm,단소온도780℃,단소시간2 h,염산질량분수15%,액고비6∶1,침취온도50℃,침취시간3 h위최가침출조건,병득도재차조건하양화려적침취솔위67.4%.
In order to improve the efficiency of utility using expensive component of coal gangue,wticle studied the effect of the acid leaching from the coal gangue component.This paper,orthogonal experiments of acid leaching from coal gangue to Twelfth Mining in ZHONGPING NENGHUA Group was used to obtain the best extracting factor of leaching alumina,and the effect of various factors on the extracting rate of alumina was briefly discussed.The optimal factor as follows： determined degree 0.15mm,calcination temperature 780 ℃,calcination time 2 h,hydrochloric acid 15%,liquid to solid ratio 6∶1,extraction temperature 50 ℃,extraction time 3 h.In this condition,the alumina extraction rate was 67.4%.