选取湖北某地石煤作为试验原料, 通过测量焙砂的松装密度和一次水浸率来研究不同焙烧温度、添加剂的种类和用量对于石煤烧结的影响. 试验表明, 石煤钠化焙烧时, 随着温度的上升松装密度增加, 烧结越严重, 钒浸出率下降, 焙烧温度应控制在750 ℃左右之间. 在最佳温度时NaCl添加量不应超过6%, Na_2CO_3添加量不应超过4%, MX_3添加量不应超过5%, 否则也会引起较严重的烧结从而降低钒浸出率.
The apparent density and the leaching rate of vanadium were investigated to evaluate the influence of roasting temperature, the type and dosage of additives on the sintering of stone coal from Hubei province. The results showed that the apparent density increased with the increase of roasting temperature, and the worse the quality of roasting led the lower the leaching rate. The best roasting temperature should be controlled at about 750 ℃. Moreover, the additive amounts of NaCl, Na_2CO_3 and MX_3 should be no more than 6%, 4% and 5%, respectively, otherwise, the leaching rate of vanadium would decrease with the serious sintering in stone coal roasting.
参考文献
| [1] | 李建华,张一敏,刘涛,黄晶,陆岷,杨建祥.石煤提钒钠化焙烧过程复合添加剂的研究[J].矿业快报,2008(04):43-45. |
| [2] | 陈铁军,邱冠周,朱德庆.石煤提钒焙烧过程钒的价态变化及氧化动力学[J].矿冶工程,2008(03):64-67. |
| [3] | 林海玲,范必威.方山口石煤提钒焙烧相变机理的研究[J].稀有金属,2001(04):273-277. |
| [4] | 邓庆云;刘松英.石煤钠化焙烧、酸浸、离子交换提钒新工艺研究[J].稀有金属与硬质合金,1993(04):27. |
| [5] | 许国镇;王锐兵 .八都、淅川石煤烧结、包裹与钒转化的研究[J].稀有金属,1994,18(06):422. |
| [6] | 刘建朋,张一敏,陈铁军,康兴东,刘涛,杨建祥.石煤提钒水浸过程的动力学研究[J].有色金属（选矿部分）,2008(04):15-17,24. |
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