2) ultra-difficulty washed coal
极难选煤
1.
The practice of increasing yield of clean coal of ultra-difficulty washed coal in Panbei Coal Preparation Plant
盘北选煤厂应对极难选煤提高精煤产率的实践
3) High ash and difficult floatable coal
极难选煤泥
4) refractory
[英][rɪ'fræktəri] [美][rɪ'fræktərɪ]
难选
1.
Test research on beneficiation of refractory oolitic hematite in hebei area;
河北某地难选鲕状赤铁矿选矿试验研究
2.
Study on extracting gold from fine-grained and disseminated refractory gold ore in a certain mine of Shanxi Province;
微细粒浸染型难选金矿石提金工艺研究
5) coal preparation
选煤
1.
The production technology of coal preparation plant of 6th well in Meihe Mine;
梅河矿六井选煤厂生产工艺的确定
2.
Cleaner production assessment model of coal preparation plant;
选煤厂清洁生产评价模型
6) coal separation
选煤
1.
PLC networks control system of production line in the coal separation plants;
选煤厂生产线PLC网络控制系统
2.
The paper presents a more detailed discussion of the significance and present situation of coal separation and the latest development of air heavy medium fluidized bed coal separation technology.
详细讨论了选煤的意义和现状以及空气重介质流化床选煤技术目前的发展。
3.
With the development of mechanization of coal exploiting and reducing of high quality coal, the heavy medium coal separation is playing more and more role in coal preparation technology, resulting from its high degree separation accuracy, easy-operation, wide density regulating rang and high efficiency and so on.
随着采煤机械化程度的提高和优质煤逐渐减少,重介质选煤以其分选精度高、操作方便、易于实现自动化等优点在选煤工业中占有越来越重要的作用。
补充资料：煤的可选性
在洗选过程中，从原煤中选出既定质量产品的可能性及难易程度。煤的可选性与原煤的性质、产品的质量要求和所应用的选煤方法有关。由于选煤主要用重选，而重选中起主要作用的是颗粒比重，所以通常采用浮沉试验方法研究煤的比重组成，以绘制可选性曲线（见图）。
由曲线可以查出选煤过程中所能达到的理论工艺指标。例如,根据要求的灰分,从曲线上可查出精煤的理论产率及与之相应的分选比重。煤炭可选性难易,可用原煤在分选比重±0.1范围内邻近比重物的多少 (±0.1%)来划分。中国煤炭可选性分类标准见表。
由曲线可以查出选煤过程中所能达到的理论工艺指标。例如,根据要求的灰分,从曲线上可查出精煤的理论产率及与之相应的分选比重。煤炭可选性难易,可用原煤在分选比重±0.1范围内邻近比重物的多少 (±0.1%)来划分。中国煤炭可选性分类标准见表。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条