宁夏鸳鸯湖矿区煤的可选性特征  

Coal Washability Characteristics in Yuanyanghu Mine Area

作　　者：张鹏 

机构地区：[1]宁夏回族自治区煤田地质局第一勘查院,宁夏银川750011

出　　处：《中国煤炭地质》2009年第11期38-40,58,共4页Coal Geology of China

摘　　要：鸳鸯湖矿区以不粘煤为主,长焰煤次之,是良好的煤化工和动力用煤。从煤岩特征,煤的筛分、浮沉、煤及矸石的泥化程度试验等方面,对矿区及各井田煤的可选性特征进行了研究,研究表明:清水营井田煤中粘土类矿物较多,可选性较差,其它井田可选性相对较好;矿区煤中粘土矿物多呈细胞充填状,惰质组含量较高,难选出灰分很低的煤;当浮煤灰分控制在6.00%～11.00%,浮煤产率大于80%,煤为中等可选—易选;煤遇水易泥化,矸石为高泥化程度。研究结果可为煤的洗选工艺设计提供依据。Coal ranks in the Yuanyanghu mine area are mainly non-caking coal, long flame coal the second, all good coals for coal chemical industry, and power plant. From coal petrology characteristics, screening, float-and-sink analysis, coal and gangue degradation in water testing, studied the coal washability characteristics in the mine area and each minefield. The study demonstrated that： there are many clay minerals in coal in the Qingshuiying minefield, thus washability is poor, while coals in other minefields have better washability; mine area clay minerals in coal mainly appear as cell packing, with higher inertinite content, hard to wash out coals with very low ash content; when the ash content of float product is controlled within 6.00%-11.00%, float coal yield can be more than 80%, thus medium to easy washable; coal is easy degradable in water, while gangues are highly degraded. The findings can be the basis of coal washing technological design.

关 键 词：煤岩特征 可选性试验 可选性特征 鸳鸯湖矿区 

分 类 号：P618.11[天文地球—矿床学]