The design of a feeding or pneumati

The design of a feeding or pneumatic conveying system is heavily influenced by a bulk solid’s particle shape, size (aspect ratio) and particle size distribution as well as the particle’s roughness, hardness (abrasiveness), and density. In the case of calcium carbonate these characteristics vary widely depending on the source and production process for the individual samples.

The sieve analysis below illustrates the difference in particle shape, particle size and particle size distribution for two samples of calcium carbonate. The large number of particle interactions makes it impossible to establish a clear correlation between filler’s properties at the particle level and its flow behavior as a bulk solid.

As a consequence, pneumatic conveying systems cannot be purchased “off-the-shelf” and must be engineered for each situation individually. Both systems engineering and equipment selection are affected by differences in a bulk solid’s characteristics. Laboratory tests are often necessary to help determine a material’s properties and behavior. A pneumatic conveying system generally consists of five basic components: a gas motive, a conveying line, a dispensing device, a material-gas separator and controls.

結果 (中文) 1:

喂养或气动输送系统的设计被深受散装固体颗粒形状、 尺寸 （长宽比） 和颗粒尺寸分布以及颗粒粗糙度、 硬度 （研磨） 和密度。这些特征在重质碳酸钙广泛取决于个别样品的来源和生产过程。下文的筛分析阐释，粒度和粒度分布的两个样本的重质碳酸钙颗粒形状的区别。大量的粒子的相互作用，使得不可能建立明显的相关关系在粒子一级填料的特性和其流动规律作为大块固体。其结果是 — — 他们，气力输送系统不能"现成"购买和必须单独设计的每一种情况。系统工程及设备选型被受从固体的大容量数据的差异。实验室测试往往必须帮助确定一种材料的属性和行为。气力输送系统一般由五个基本部分组成： 气体动力、 输送线、 点胶设备、 材料气体分离器和控件。