STRENGTH OF AGGLOMERATES BOUND BY SALT BRIDGES
STRENGTH OF AGGLOMERATES BOUND BY SALT BRIDGES
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DOI：
10.1002/cjce.5450470419
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发表时间：
1969-01-01
影响因子：
2.1
通讯作者：
PIETSCH, WB
中科院分区：
文献类型：
--
作者：
PIETSCH, WB
研究了盐桥结合团聚体干燥行为与干燥状态下抗拉强度的相关性。通过在手动操作的模压机中压制用盐溶液预润湿的石灰石粉末来制备所检查的粒料。改变湿团聚体的液体饱和度、盐溶液浓度和干燥温度，通过测量干燥过程中圆柱形颗粒内不同径向位置的温度和测定干燥速率曲线，可以考察表面结垢对干燥过程的影响。干燥球团的抗拉强度通常在去除盐壳后测量，其取决于结晶盐的量和局部分布以及盐桥的强度。后者取决于受干燥速率影响的晶体结构。
The correlation between the drying behavior and the tensile strength of agglomerates bound by salt bridges in the dry state was investigated. The pellets examined had been prepared by compacting limestone powders, which were premoistened with a salt solution, in a manually operated die press. The percentage liquid saturation of the moist agglomerate, the concentration of the salt solution and the drying temperature were altered.The influence of the surface incrustation on the drying process could be examined by measuring the temperatures within the cylindrical pellet at different radial positions during drying and by determining the drying rate curves. The tensile strength of the dried pellets, which was usually measured after removing the salt crust, depends on the quantity and the local distribution of the crystallized salt, and the strength of the salt bridges. The latter depends on the crystal structure which is influenced by the drying rate.