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矿务局对电氧化技术进行了实验室规模的研究,以决定这种工艺从低品位辉钼精矿中提取钼和铼的可行性。对影响提取的各种参数,诸如矿浆浓度、动力消耗、控制 PH 值所需的试剂和电解槽的结构形式进行了研究。用含钼4.76到28。6%和含铼180PPM 到1000PPM 的数种精矿试验的结果表明,钼和铼的提取率达到98到99%。效果以电解时的 PH 值能维持在5.5和7.0之间且最终的 PH 值能提高到8.2左右为最好。每提取一磅钼消耗的碳酸钠为4到6磅,而动力消耗则从采用浸没电极(immersion ele—otrodes)时的12到25千瓦小时降到采用双极顺流电解槽(biPolar flowthrough oell)时的9.7千瓦小时。但是,钼的提取率却取决于电解槽的结构形式。
The Bureau of Mines conducted a laboratory-scale study of electro-oxidation technology to determine the feasibility of this process for the extraction of molybdenum and rhenium from low-grade molybdenum concentrates. Various parameters affecting the extraction, such as slurry concentration, power consumption, reagents required for pH control, and cell structure were studied. Several concentrate tests with 4.76 to 28.6% Molybdenum and 180 PPM to 1000 PPM containing rhenium showed that the extraction rate of molybdenum and rhenium reached 98 to 99%. The effect of electrolysis PH value can be maintained between 5.5 and 7.0 and the final PH value can be increased to about 8.2 is the best. 4 to 6 pounds of sodium carbonate per pound of molybdenum extracted while power consumption drops from 12 to 25 kilowatt hours with immersion ele- otrodes to a biopolar flowthrough oell 9.7 kilowatts hours. However, the extraction rate of molybdenum depends on the structure of the cell.