| 高硅石煤氧压酸浸中硅的行为研究 |
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| 引用本文： | 樊刚,李旻廷,魏昶,李存兄,邓志敢. 高硅石煤氧压酸浸中硅的行为研究[J]. 矿产综合利用, 2008, 0(4) |
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| 作者姓名： | 樊刚 李旻廷 魏昶 李存兄 邓志敢 |
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| 作者单位： | 昆明理工大学材料与冶金工程学院,云南,昆明,650093;昆明理工大学材料与冶金工程学院,云南,昆明,650093;昆明理工大学材料与冶金工程学院,云南,昆明,650093;昆明理工大学材料与冶金工程学院,云南,昆明,650093;昆明理工大学材料与冶金工程学院,云南,昆明,650093 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 研究了在不同添加剂用量下,石煤氧压酸浸过程中硅的行为。试验结果表明:随着添加剂用量的增加,SiO2的Ⅰ段浸出率逐渐上升,而Ⅱ段浸出率则逐步降低。总体上SiO2的两段浸出率呈现增加的趋势。其最大浸出率仅为0.75%左右,即在氧压浸出过程中SiO2基本不被溶出。当滤液中SiO2浓度超过2.0g/L时,矿浆过滤速率变得缓慢。
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| 关 键 词： | 石煤 二氧化硅 浸出率 过滤速率 |
Study on the Silicon Behavior in Oxygen Pressure Acid Leaching of Stone-coal |
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| FAN Gang,LI Min-ting,WEI Chang,LI Cun-xiong,DENG Zhi-gan. Study on the Silicon Behavior in Oxygen Pressure Acid Leaching of Stone-coal[J]. Multipurpose Utilization of Mineral Resources, 2008, 0(4) |
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| Authors: | FAN Gang LI Min-ting WEI Chang LI Cun-xiong DENG Zhi-gan |
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| Abstract: | The silicon behavior in oxygen pressure acid leaching of stone-coal under different dosage of additive was studied.The experimental results showed that with the increase of additive consumption the leaching rate of SiO2 was also improved in first stage leaching,but it is decreased in second stage leaching.The total leaching rate of SiO2 in two stages appeared incremental tendency.However,its maximum leaching rate only attained 0.75%,that is,the SiO2 in this mineral was difficult to be leached.When the concentration of SiO2 in leaching liquor exceeds 2.0g/L,the filtration rate of the pulp becomes slower. |
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| Keywords: | Stone-coal Silicon dioxide Leaching rate Filtration rate |
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