The mixing of CWP ( Coal Water Paste) in the two dimensional fluidized bed with jet was investigated by digital image processing. 利用图像处理技术在二维流化床试验装置上研究了水煤膏的混合过程。
When gangue content is less than 30 percents, the strength of coal gangue cement paste at the age of 28d is close to or reaches that of reference cement paste. 相同掺量条件下,与粉煤灰水泥浆体相比,煤矸石水泥浆体各龄期强度均较高;
Compared with traditional strip mining and village-relocation mining, the advantage of using solid waste paste filling to realize none-village-relocation coal extraction was analyzed. The importance for China to develop solid waste paste filling technology in coal mine was clarified. 对比分析了村庄压煤采用传统迁村开采、条带开采存在的问题,以及采用固体废物膏体充填不迁村采煤技术的优越性,阐明我国煤矿发展固体废物膏体充填的重要意义。
Development of pumping and feeding technology of coal water paste for PFBC applications in the world 压力流化床燃烧煤水混合燃料泵送给料技术在国外的研究进展
Study on transportation of pumping coal-water paste in pipes 增压流化床用水煤膏管道输送的研究
This paper discusses the reliability of narrow coal column support from load-bearing capacity, pin timbering manner, small hole anchorage cable strengthening and top paste injection etc. 从保证窄煤柱承载能力、顶锚杆支护形式、小孔径锚索加固、顶板预注浆等方面论述了采用窄煤柱支护的可靠性。
Based on the analysis of slip flow mechanism in a non-Newtonian fluid pipe the authors have come up with a method for determining the resistance losses of coal water paste through the calculation of a generalized Reynolds number Reg for the in-pipe flow of coal water paste. 在分析非牛顿流体管内滑移流动机理的基础上,提出了通过计算水煤膏管内流动广义雷诺数Reg来确定其阻力损失的方法。
Total porosity of coal gangue cement paste is higher but its pore size at later age is smaller than that of reference cement paste. 与基准水泥浆体相比,煤矸石水泥浆体总孔隙率有所上升,但其孔径后期有所细化。
Experimental Investigation of Feeding Coal Water Paste into Pressurized Fluidized Bed 向加压流化床添加水煤膏的试验研究
The hydration processes of cement paste admixed with coal gangue were studied by examining the compressive strength, the reaction degree of coal gangue, the alkalinity of pore solution and SEM, and then compared with the cement paste admixed with class II fly ash. 从强度、反应程度、孔溶液碱度和SEM等方面,研究了煤矸石作为水泥辅助胶凝材料的水化情况,并与Ⅱ级粉煤灰进行比较。
By means of physical property test of the cement paste as well as XRD and SEM, the effects of coal gangue with different proportions in cement on the hydraulic properties of hardened cement paste had been studied. 通过对硬化水泥浆体物理力学性能的检测,结合XRD和SEM分析,研究了不同掺量的煤矸石对硬化水泥浆体水化性能的影响。
Given is the development status in recent 40 year in Ningxia as to coal cleaning and process, coal coking, manufacture of electrode paste, carbon block, calcined coal, activated carbon, silicon carbide, carbon black from gas, and coal gasification and liquefaction. 阐述了近40年来宁夏在煤炭洗选加工,煤炭炼焦,煤制电极糊、炭块、煅料、活性炭、碳化硅、瓦斯炭黑及煤炭气化和液化等方面的发展情况;
Design of Water Coal Paste Burner 山东白杨河电厂油改水煤浆燃烧器设计
The influence factors of strength and slump of coal gangue paste filling body and the regression function for these two factors are obtained by orthogonal test and linear regression. 通过正交试验和线性回归,得出影响煤矸石膏体充填体强度和坍落度的因素及回归函数。
The general backfilling materials are introduced and the influencing factors on the coal gangue paste backfilling body strength and the pumpability of paste slurry are analyzed. 然后介绍了常用充填材料,并对煤矸石膏体充填体强度及充填料浆可泵性的影响因素进行了分析。
Combining the practical conditions of Taiping coal mine, the general characteristics requirements of the paste filling materials were put forward. 结合太平矿膏体工作面具体情况,提出了膏体充填材料的性能要求。