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In Yutangba, native Se extensively exists within Se-rich carbonaceous rocks, abandoned stone coal spoils and high-Se soils close to Se-rich carbonaceous strata. 自然硒在渔塘坝富硒碳质岩层及其附近的土壤、废弃“石煤”堆中广泛发育。
The results from studies show that native Se, which varies morphologically due to different mechanisms, has been discovered within the abandoned stone coal spoils and Se-rich carbonaceous silic. 研究结果表明,在渔塘坝废弃的石煤堆"和富硒岩段,首次发现了多形态、多成因的自然硒和硒铜蓝、水硒铁石等硒的独立矿物,证实了富硒岩石中自然硒的存在。
abandoned stone coal spoil 废弃石煤渣堆积物
In the stone coal layer and the overlying black shale, there is a pyrite layer. 在石煤层或其上部的碳质页岩中含黄铁矿层。
According to author Frances Mayes, Tuscany is "the sweetest countryside I know, where inviting roads wind off into fields punctuated by abandoned stone houses. 根据法国作家梅耶斯的描述，托斯卡纳“是我所知的最美乡村，那里诱人的路将农田分隔，农田上点缀著自然堆砌的石头房子。”
On the basis of analysis of activated silicon and aluminum components,a new smelting process of Si Al Fe alloy by use of coal spoil for replace a part of bauxite was proposed. 通过分析煤矸石的活性硅、铝成分,提出了以煤矸石代替部分铝钒土冶炼硅铝铁合金。
Producing special cement by using scale stone instead of coal spoil 用硅石代替部分煤矸石生产特种水泥
In the process of exploring Beijing's ancient ruins, what I often found as markers of the past were a well or spring, a couple of gnarled pines and sometimes a stele or an abandoned stone cave. 作者以自己的所知、所为、所见为素材，回顾了对外开放初期的有关重大事件，再现了以邓小平同志为核心的党的第二代中央领导集体带领全国人民进行对外开放的伟大探索和实践。
The results show that the vanadium in stone coal is almost completely to be located or implanted inside mica mineral. 结果表明,钒在石煤中主要富集在云母类矿物中。
In this experiment the characteristics of mixed filtration media composed of rare earth sandstone, quartz sand and stone coal were researched. 并对曝气过滤的效果及稀土瓷砂和石英砂、无烟煤混合滤料的性能进行了试验研究。
Lots of resources occurred in coal measures which associated with coal including oil shale,coalbed methane,anthraxolite,stone coal and oil. 含煤岩系中赋存有可供利用的油页岩、煤层气、碳沥青、石煤、石油等资源,这些能源矿产与煤有成因关系,往往伴生或共生。
Causticizing mud was used as a roasting additive of sodium chloride for extraction of vanadium pentoxide from stone coal. 从石煤中提取五氧化二钒时,用苛化泥作焙烧添加剂,以取代氯化钠。
The principles and low pollution process in production of vanadium pentoxide with stone coal containing vanadium are introduced in detail. 介绍用含钒石煤生产五氧化二钒的原理和低污染生产工艺。
Zheng Xiang-ming.Study on technique of recovering vanadium pentoxide from stone coal[A]:[Master Thesis].Xiangtan University,2003. [3]郑祥明;田学达.;石煤提钒新工艺研究[A]:[硕士学位论文]
Our factory is located in E'nan is Chongyang joint-stock joint venture, professional to stone coal extraction of vanadium pentoxide. 我厂地处鄂南，是崇阳联合股份共同投资，专业以石煤提炼五氧化二钒。
From the coal rank and the combustion characteristics and kinetic analyzing results, the stone coal should be classed as a high rank and maggy anthracite coal. 根据煤阶和燃烧特性及动力学分析判断，石煤属于高变质的劣质无烟煤。
Uses: PCH-ring hammer crusher is most appropriate for a variety of brittle materials, such as coal, stone coal, coke, slag, red sandstone, shale, limestone, such as osteoporosis. 用途：PCH型环锤式破碎机，最适用于各种脆性物料，如煤、煤矿石、焦炭、炉渣、红砂岩、页岩、疏松石灰石等。
Extraction technology of vanadium from the sodium roasting,the non-salt oxidizing roasting,the stone coal soaking by acid (alkali) and its evolvement process were introduced. 介绍了钠化焙烧、无盐氧化焙烧、酸(碱)浸石煤等提钒的工艺及其演变过程。
Experiment results show that the leaching rate of vanadium in roasted stone coal in water is lower when mass fraction of calcium in stone coal is higher. 考察了焙烧温度、入炉温度、有机质、添加剂氯化钠用量、焙烧时间、焙烧气氛和矿样粒度对钒浸出率的影响。
He used to abandon his work for months at a time. 他过去每次放下工作就是几个月。