Coal beneficiation of Candiota mine by dry jigging
Coal beneficiation of Candiota mine by dry jigging
复制标题
DOI：
10.1016/j.fuproc.2007.09.004
复制
发表时间：
2008-02
影响因子：
7.5
通讯作者：
C. Sampaio;W. Aliaga;E. Pacheco;E. Petter;H. Wotruba
中科院分区：
文献类型：
--
作者：
C. Sampaio;W. Aliaga;E. Pacheco;E. Petter;H. Wotruba
这项工作的目的是测试干跳汰，操作与空气，以消除黄铁矿结核和解放粘土从Alcatota煤。巴西最大的煤矿存款是Alcohota矿，用于为热电厂提供燃料。这种煤在很宽的密度范围内呈现出高度的释放黄铁矿。因此，黄铁矿的重选作用显得十分明显。然而，由于材料的低等级导致的高孔隙率，任何湿处理都是困难的。为此，采用干式跳汰选煤，取得了令人鼓舞的效果。来自煤层上层的样品具有约1.8%的硫和约51%的灰分，在跳汰后出现约0.7%的硫和约47%的灰分。在这些结果之后，计划在工厂安装试验夹具。
The objective of this work is to test dry jigging, operated with air, to eliminate pyrite nodules and liberated clays from Candiota coal. Candiota mine is the biggest Brazilian Coal deposit, which is beneficiated for fueling a thermoelectric plant. This coal presents a high degree of liberated pyrite in a wide range of densities. Hence, gravity separation of pyrite appears apparently obvious. However, any wet treatment results difficult due to the high porosity of the material as a consequence of its low rank. For that reason, dry jigging was proved instead with encouraging results. Samples from the upper layer of the seam, which had around 1.8% sulfur and about 51% ash, appeared after jigging with about 0.7% sulfur and near 47% ash. After these results, pilot jigs are planned to install at the plant.