查询词典 coal mine

The results show that the polymer determines the electricity conducting of coal filled polymer composites. The coal filled PP composites is an insulating material, and be independent of coal type, its direct current resistivity is above 10〓Ω·cm. The resistivity drops with the content of coal when using anthracite, but it is also above 10〓Ω·cm, and the surface modification of coal, especially alkylated, resumes the insulance of composites.

X射线衍射测试表明即使在高变质程度下煤中的石墨晶区含量仍较低，煤填充聚合物复合材料电性能主要由基体材料性能决定，通过动电容静电计对煤填充聚丙烯复合材料直流电导性研究表明，煤填充聚丙烯复合材料是绝缘材料，其绝缘电阻在10〓Ω·cm以上，在高含量情况下，仍能保持良好的绝缘性，而与煤种无关。

Mineral fuel is the primary energy source in the world today, thereinto coal resource holds in store more than 75 percent in the total energy source. During coal's utilized, nocuousness matter expels into environment through all kings of method and works serious environmental pollution. Desulphurization has become one of primary objects of cleaning coal. At present, there are some primary problems of removing sulfur from coal. It is the size of coal is too small, the time of removing sulfur is too long, the technology is too complicated and the investment is much expensive etal.

中文题名燃煤微生物预处理浮选脱硫的试验研究副题名外文题名 Study on microbial pretreatment and floatation desulphurization in coal 论文作者周志付导师王英敏魏德洲教授学科专业安全技术及工程研究领域\研究方向学位级别博士学位授予单位东北大学学位授予日期2002 论文页码总数99页关键词燃煤微生物预处理－浮选脱硫煤炭脱硫馆藏号BSLW /2003 /X701 /2 矿物燃料是当今世界的主要能源，其中煤炭资源蕴藏量占总能源的75％以上，在煤的利用过程中，有害物质以各种方式排入周围环境，造成了严重的环境污染，因此脱硫已成为洁净煤技术的主要目标之一，而目前煤中硫的脱除存在的主要问题是：煤粉太细，脱硫时间长、技术复杂，投入费用太高等。

Under the base of investigation and research on natural radioactive nuclein in coal of Yili area,combining with the distributing characteristic and law of radioactive nuclein in coal of area and residents' customer of using coal in Yili area,the article raises decrement,resources,harmless and prevention and control measure of whole course managing rule with having a definite object in view and put foward a feasible plan and way for economie developmant of Yili area,resonable development and utilization of coal resources,preventing from pollution because of mining and utilizing coal and further protecting people's health.

文摘：在对伊犁地区煤中天然放射性核素调查研究的基础上，结合伊犁地区煤中放射性核素分布的特点、规律以及伊犁地区居民的用煤习惯，有的放矢的提出了减量化、资源化、无害化以及全过程管理原则的防治措施，为伊犁地区的经济发展，煤炭资源的合理开发和利用，防止因煤炭的开采利用而造成的污染，建设性的提出了切实可行的方案和途径。

The coal filled PP composites have higher fracture toughness when the content of coal is high (When the content of coal is 50wt%, the K〓 of composites remains 50% of PP). The F-C alkylation has grafted long chain alkyl on the surface of coal, and then toughens the coal/PP composites.

超细煤粉填充聚丙烯复合材料平面断裂韧性的系统测试以及微观结构的观测表明，煤填充聚丙烯复合材料在高煤含量情况下仍具备一定的韧性（当煤含量达50wt％时，应力强度因子K〓仍能保持纯聚丙烯的50％左右）；烷基化改性在煤样表面接枝了长链的烷基，使粉煤/聚丙烯复合材料平面断裂韧性普遍提高。

Co-firing characteristics of corn stalk and stone coal in different proportion were investigated by thermal gravimetric analysis. The results showed that corn stalk can improve the ignition and combustion of stone coal. The agglomeration experiments on corn stalk were made in a bench-scale bubbling fluidized bed with quartz sand as bed material and stone coal ash as additive. The results indicate that stone coal ash can inhibit agglomeration of bed material particles at temperature of 900℃. Agglomerate of blends was analyzed by means of scanning electron microscopy, energy-dispersive X-ray, and the bed materials were analyzed by means of X-ray fluorescence. Analysis showed that aluminum element and iron element in stone coal ash can react with alkali compounds and eutectics with low melting point, form a covering layer with high melting point on the surface of biomass and quart sand particles, thus inhibit the forming and transfer of low melting compounds.

以玉米秸秆与石煤按不同比例组成的混合物为研究对象，在TG-DTG热分析仪上进行了燃烧特性分析，结果表明玉米秸秆有利于石煤的着火和稳定燃烧，对石煤有一定的助燃作用；在小型鼓泡流化床实验装置上，以石英砂为床料、石煤灰为添加剂，进行了玉米秸秆成型燃料流化床燃烧的床料黏结实验，结果表明：石煤灰能够在生物质流态化燃烧过程中有效地抑制流化床床料黏结现象的发生；通过对实验中形成的结团进行扫描电子显微镜X射线能谱(scanning electron microscopy/Energy-dispersive X-ray- SEM/EDX)，对床料进行X射线荧光光谱(X-ray fluorescence，XRF)分析，结果表明石煤灰中的Al和Fe能够与生物质灰中的碱金属化合物以及低熔点共熔物发生化学反应生成高熔点物质，并且覆盖在生物质碳颗粒与石英砂颗粒表面形成隔绝层，从而阻止低熔点物质的生成与迁移。

The company cooperates with China coking plant industry association, Shougang group institute developed study and exploit for blast furnace blowing material used shenmu lam coke powder, shenmu coal used for coking plant coal blending; the company also cooperats with SHANXI coalification institute, Kaifeng coal institute developed smokeless environmental protection ovoid coal produced from shenmu lam coke powder, study and development for special class Ovoid coal.

公司还与中国炼焦行业协会、首钢研究院合作，开展了神木兰炭末用于高炉喷吹材料的研究与开发，神木煤作为炼焦配煤的研究与开发；公司与山西煤化所、开封煤研所合作，开展了神木兰炭末制环保无烟型煤的研究与开发、特级型碳的研究与开发。

By fitting the function reflects the changing trends in the data, access overloading current round of fighting, and in accordance with a real-time measurement of the current round of fighting, from coal forecast instantaneous flow, and flow measuring devices and video detection to the instantaneous flow of coal from joint participation control, at the same time on different Bucket Meidui set rated from coal flow from coal bucket wheel and different operating current limit, to ensure that coal Bucket from the high efficiency and safe operation.

通过拟合的函数关系反映出的数据变化趋势，获取斗轮超载电流，并根据实时测得的斗轮电流，预测瞬时取煤流量，并与视频流量检测装置检测到的瞬时取煤流量共同参与控制，同时为斗轮机对不同煤堆取煤设定额定取煤流量和不同的斗轮工作电流上限，确保斗轮机取煤的高效率和运行安全。

Coal wharf logistics system is a very complex sys tem(Coal wharf system includes car unloading system with car dumper,coal storage yard operation,coal conveyer belt system,coal blending system,shipment system and so on,all of them consume much time and resource),the formation of its capability has many aspects of restrictive factors,which should be analyzed in systematic and integral view.

煤炭码头物流系统是一个复杂的系统(煤炭码头工艺系统包括翻车机倒煤、堆取剁、皮带转接、配煤、装船等等，都需要耗费很多时间和电力)，其能力的形成有多方面的制约因素，对它的分析必须以系统的、整体的观点进行。

The equipment provided in process are: jig sorting mainly to deal with overflow flotation, jigging in the coal and coal flotation tail mixed into the power plants, waste shipped to the Waste Dump, block coal jigging dehydration, floating Coal election at the end of filtration and hydraulic flow classification Desliming, dehydration through the belt to the Coal Wharf.

本设备所规定的工艺流程是：以跳汰选别为主，浮选处理溢流，跳汰中煤和浮选尾煤混合入电站，矸石运向矸石山，跳汰块精煤脱水、浮选精煤过滤与水力分级底流脱泥、脱水通过皮带运到精煤仓。

The gas solid interaction was studied, the solid concentration and particle size distribution contours downstream of the nozzle were obtained. The particle roping mechanism in a coal conveying pipe with large diameter was also studied with the fiber probe. The on-line coal concentration measuring facility is needed for NO〓 reduction. In this work, a set of on-line coal concentration measuring facility was developed and installed in the coal conveying pipes of a 660MW capacity utility boiler, which can give on-line accurate coal concentration information for the operator.

论文首次采用基于光学波动法的激光光纤探针，对高浓度的低NO〓燃烧器出口的气固两相流动的详细结构进行了试验，研究了配300 MW煤粉燃烧锅炉的燃烧器出口高浓度气固相射流中颗粒浓度、粒度随射流发展的演变规律，分析了利用水平浓淡燃烧器和齿形燃烧器实现对低NO〓燃烧有利的气固结构，并验证了基于DES方法的气固两相数值模拟的计算结果。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48