飞灰微球,也称为空心圈,有许多有价值的特性,使它们被广泛使用。其一些最重要的性能是其机械和热强度以及其化学稳定性。这些特征构成重要的商业参数。精炼过程旨在从原材料中选择符合接受者期望的最高质量的产品。一般来说,制备最终产品包括选择谷粒分离过程的适当顺序和参数。然而,这些参数的最佳选择的关键是知识的加工原料的特殊性。微球是自发产生的材料,不受控制,并且没有故意影响其属性的可能性。因此,由于微球使用的潜在方向,研究密度之间的关系是合理的,晶粒尺寸,和机械强度。在规划精炼过程的阶段,了解各种来源的微球中的这些关系尤为重要。本文介绍了两种不同来源的微球的研究结果。对测试的原材料(微球)进行密度测定和颗粒分析。此外,机械强度被确定为分离的密度部分和谷物类别。测试结果没有显示微球的测试特征之间的显著相关性。在两种原材料的情况下,在最小的谷物类别中观察到最高的密度,对于晶粒尺寸在75-100µm范围内的微球,确定了最高的机械强度。对于这个晶粒尺寸范围,原材料1的机械强度值为26,原材料2的机械强度值为38。该谷物部分在微球流中的份额为11.2%和16%,分别。可能会显著影响精炼过程效率的一个重要区别是初级下落零件的分配方法,影响被测原材料的机械强度。
Fly ash microspheres, also called cenospheres, have many valuable properties that allow them to be widely used. Some of its most important properties are its mechanical and thermal strength as well as its chemical stability. These features constitute an important commercial parameter. Refining processes aim to select the highest quality product from raw materials that meets the expectations of recipients. Generally, preparing a final product involves selecting the appropriate sequence and parameters of the grain separation process. However, the key to the optimal selection of these parameters is knowledge of the specificity of the processed raw material. Microspheres are materials that are created spontaneously, uncontrolled, and without the possibility of intentionally influencing their properties. Therefore, due to the potential directions of
microsphere use, it is justified to study the relationship between density, grain size, and mechanical strength. Understanding these relationships in microspheres from various sources is particularly important at the stage of planning refining processes. This paper presents the results of research on microspheres from two different sources. The tested raw materials (microspheres) are subjected to densiometric and grain analysis. Also, mechanical strength was determined for the separated density fractions and grain classes. The test results did not show significant correlations between the tested features of the microspheres. In the case of both raw materials, the highest density was observed in the smallest grain classes, and the highest mechanical strength was determined for microspheres with grain sizes in the range of 75-100 µm. For this grain size range, the value of mechanical strength is 26 for raw Material 1 and 38 for raw Material 2. The shares of this grain fraction in the
microsphere stream are 11.2% and 16%, respectively. An important difference that may significantly affect the efficiency of the refining process is the method of distribution of the primary falling parts, which affects the mechanical strength of the tested raw materials.