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Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the analyses of the influencing factors of coal ash viscosity-temperature characteristic (ash composition, critical viscosity temperature and slag type),the regulation behaviors of calcium oxide on viscosity-temperature characteristics were expounded.Furthermore, the mechanism of calcium oxide controlling the viscosity-temperature characteristics of coal ash was analyzed. Finally the viscosity prediction models were summarized. This might provide reference for the regulation of coal ash viscosity-temperature characteristics and the regulation mechanism of coal ash viscosity temperature characteristics is summarized and prospected. [ABSTRACT FROM AUTHOR]

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to explore the adhesion and deposition characteristics of Shenmu fly ash (FSM) from ash-agglomerating fluidized-bed gasifier, on the basis of analyzing the particle size of FSM samples, the ash fusion temperature (AFT) and chemical composition of each particle size range of FSM and Shenmu coal were determined by ash fusion temperature analyzer and X-ray fluorescence spectrometer (XRF). The results show that particle size distribution of FSM is wide and has multi-peak. With the decrease of FSM particle size, the Ca, Fe, Si content of FSM are higher than that of coal, Al content is lower than that in raw coal, which results in the AFT of FSM is lower than that of raw coal. FSM with particle sizes in the range of 0.15-0.25 mm may behave a greater effect on adhesion because of their silicate glassy material formation and the calcium or ferrite low melting point eutectic. Based on the analysis on the formation process and the stress of FSM particles, the process of adhesion and deposition on the wall was discussed,and its model was also established. [ABSTRACT FROM AUTHOR]