1)drawing technology放煤工艺
英文短句/例句
1.Increasing Rate of Coal Mining with Improving Coal Caving Technology at Fully Mechanized Face改进综放工作面放煤工艺提高回采率
2.Study on Top Coal Caving Technology of Horizontal Section in Steep Seam in Weihuliang;苇湖梁煤矿急倾斜综采放煤工艺研究
3.Optimized Trial on Fully Mechanized Top Coal Caving Mining in High Inclined Seam大倾角煤层综放开采放煤工艺优化试验
4.Study on Coal Rock Caving Laws and Technological Parameters of Top-Coal Caving of Fully Mechanized Mining with Great Cutting Height for Thick Coal Seam;厚煤层大采高综放开采的煤岩冒放规律及放煤工艺参数研究
5.Research on Coal-Rock Movement Law and Drawing Technology for Fully Mechanized Caving Face of Special Thick Coal Seam in the Anjialing No.2 Coal Mine;安家岭2号井工矿特厚煤层综放工作面煤岩活动规律及放煤工艺研究
6.Study on Gateway Top Caving Technology for Steep-inclined Coal Seam急倾斜煤层巷道放顶煤回采工艺研究
7.Practice of "Two Wining and One Caving" Technique on Blasting and Top-coal Caving Working Face“两采一放”工艺在炮采放顶煤工作面的实践
8.Optimization of the grouting technology in fully mechanized top coal caving mining face in polar broken thick seam极破碎厚煤层综放工作面注浆工艺优化
9.Mining Practices of Fully Mechanized Top Coal Caving Mining Face in Deep Inclined Seam of Meihe Mine梅河煤矿大倾角综放工作面回采工艺实践
10.Study of technique simulating test on fully mechanized top-coal caving workface in greater inclined and thick coal seams大倾角特厚煤层综放工作面工艺模拟试验研究
11.Study on Feasibility and Mining Technology with Fully-mechanized Caving Face in Ciyaopu Mine;磁窑堡煤矿综放开采可行性及工艺研究
12.Application of BDY Sliding Support in Provement of π Type Steel Caving TechnologyBDY滑移支架在π型钢放顶煤工艺改革中的应用
13.New Zero-CO_2 Emission Coal Gasification Methanol Production Technology实现CO_2零排放的煤气化制甲醇创新工艺
14.Numerical Simulation of Reasonable Technologic Parameters for the Fully-Mechanized Top-Coal Caving of a 20 m Thick Coal Seam综放20m特厚煤层合理工艺参数数值试验研究
15.Study on the Process of Coal Gangue Dewatering with the Bypass and the Activity of the Dewateringcoal Gangue;旁路放风合并煤矸石脱水工艺与脱水煤矸石活性的研究
16.Research of fully-mechanized sublevel caving technology in structural complex thick seam face with output of 2 million tons per year结构复杂厚煤层工作面年产200万t综放工艺研究
17.Top Coal Crushing Mechanism and Determination of Roof Caving Height in Roof Caving Workface放顶煤工作面顶煤破碎机理及放煤高度的确定
18.DISCUSSION OF GAS SHIFT PROCESS OF SHELL COAL GASIFICATION PLANT壳牌粉煤气化装置煤气变换工艺探讨
相关短句/例句
coal caving technique放煤工艺
3)technological parameters for coal drawing放煤工艺参数
1.Fully mechanized sub level caving face is a complicated non linear system, and the selection of equipment and technological parameters for coal drawing and the forecast of technical economic indexes of the face are complicated non linear problems which are difficult to solve with traditional mathematical method.综放工作面为复杂的非线性系统 ,其设备与放煤工艺参数的选择和技术经济指标的预测 ,是复杂的非线性问题 ,用传统的数学方法难于解决 。
4)sublevel caving mining teclinology放顶煤回采工艺
5)top coal caving on fully-mechanized working face综采放顶煤工艺
1.3 coal seam and its hydrogeological conditions, and points out that the top coal caving on fully-mechanized working face has overcame some problems such as the difficult movement of the breaker because the heavy pressure of the main tunnel, the serious wall caving on the working face, and the working face\'s passing through fault, etc.阐述了太原西峪煤矿的生产技术现状,分析了3号煤煤层赋存情况及水文地质情况,指出综采放顶煤工艺克服了主巷压力大、破碎机行走困难、工作面煤壁片帮严重、工作面过断层等难题,提高了技术装备水平,为创建安全高效矿井奠定了技术基础。
6)light and lower top-caving technique轻型低位放顶煤工艺
1.This paper introduces the features of the light and lower top-caving technique and its application in each coal bed of Xishan Mining Area, analyzes the problems existing in the application of the light and lower top-caving technique, and puts forward some solving countermeasures.介绍了轻型低位放顶煤工艺的特性及其在西山矿区各煤层的应用,分析了轻型低位放顶煤工艺在应用中存在的问题,并提出了解决的对策。
延伸阅读
高炉喷吹粒煤工艺介绍80年代以来，英国、法国、美国的少数高炉采用了喷吹粒煤工艺。粒煤的平均粒度约０.６ｍｍ，最大颗粒２－３ｍｍ。１９９１年１０月，英国斯肯索帕厂维多利亚高炉喷吹粒煤的月平均喷煤量达到了２０１ｋｇ／ｔ铁。此时的煤焦置换比仍然比较高（０.９３－１.０ｔ／ｔ），炉顶煤气中含尘量仍保持在７ｋｇ／ｔ铁左右（说明粒煤全部在炉内消化），高炉操作顺行。由于喷吹粒煤具有磨煤机投资低，电耗少以及制煤、喷吹安全性好的优点，加上喷煤量也能达到２００ｋｇ／ｔ铁，国内有些工厂也想采用喷吹粒煤工艺，其中唐钢已经引进了二手设备，供２５００ｍ３高炉使用，目前正在安装调试，不久将投入运行。 如果国内其他工厂也想采用粒煤工艺，建议先要考虑一下本厂的实际情况，与国外高炉对照一下，需要多高的喷煤量，是否具备了喷吹粒煤的条件： １英国斯肯索帕厂的原燃料条件本来就很好，为了将喷煤量提高到２００ｋｇ／ｔ铁，焦炭Ｍ４０强度从原来的８２%－８３％提高到８６.７％，Ｍ１０＝５.７％（年平均），烧结矿ＩＳＯ强度从７２％提高到７６％。显然，中国大部分高炉的原燃料尚未达到这种上好条件，也就不能要求达到同样的喷煤量。 ２喷吹粒煤并不是什么煤种都一样，参照国外经验，宜选择含有较多结晶水的高挥发份烟煤或褐煤，因为这种粒煤具有较强的急热爆裂性，在风口前燃烧时会产生爆裂而进一步被粉碎。根据德国亚森大学的试验结果，即使用了有较强爆裂性的煤种，粒煤在风口前的燃烧率也仅为烟煤粉的７０％左右。如果选用普通烟煤或无烟煤，那么粒煤的燃烧率就会更低达不到粉煤的喷煤量，在喷吹等同煤量时，进入炉内的未燃粒煤就会相应增多，要充分注意喷吹粒煤燃烧率低这一特点。 ３维多利亚高炉喷吹２０１ｋｇ／ｔ铁粒煤时的风温为１１３９℃，富氧率为８.５２％（相当于１００Ｎｍ３／ｔ铁氧气）而宝钢３号高炉１９９８年５月月平均喷吹混合煤粉１９７ｋｇ／ｔ铁，风温１１９９℃，富氧率仅为２.２％（相当于３０Ｎｍ３／ｔ铁氧气）。在我国目前电价和制氧成本较高的情况下，富氧量的多少是决定高炉喷煤经济效益的主要因素，因此必须根据本厂条件计算以煤代焦降低铁水成本和富氧增加铁水成本两笔经济账。过多的富氧会使高炉喷煤变成得不偿失。 ４在相同燃烧率的条件下，喷吹带有较多结晶水的粒煤在风口前的燃烧生成热量要比一般烟煤少（比无烟煤更少），为了满足高炉操作必需的最低理论燃烧温度，必然要有更多的热量补偿手段棗富氧和风温。如要降低昂贵的富氧量，必须要有高风温（１％富氧率，约相当于７５℃风温）。显然，我国的大部分高炉目前都还不具备高风温的条件，因此，喷吹粒煤与喷吹粉煤相比，更加无法期望较高的喷煤量。
