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本文对窄粒级无约束的颗粒层在挤压应力和冲击应力下得出的重要结果进行了讨论。通过比较表明,这两种应力在关于破碎产品粒度分布、选择函数和能量利用等方面大体上具有一致的趋势。对产品粒度分布的描述。产品粒度分布为带上限的三参量对数高斯分布的混合分布,其参数在第一和第三个子集合中相符得很好。对选择函数的描述。选择函数标准化为:对两种应力情况下具有标准偏差σ=1.15的两参数高斯分布的极限值。在两种应力情况下,随着应力的增加,能量利用率总是以同样的比率减小。由于选择的试验方案不同,在冲击应力破碎的情况下破碎产品吸收一部分动能,所以其能量损失较大。与挤压应力破碎情况相比,其破碎产品粒度较粗,而且在同样应力功条件下,能量的利用只是挤压应力破碎的一半。
In this paper, the important results obtained by compressive stress and impact stress of narrow-particle level unconstrained particles are discussed. The comparison shows that these two stresses have roughly the same trend in terms of particle size distribution, selection function and energy utilization of the crushed product. Description of product particle size distribution. The product particle size distribution is a mixture of three parametric log-Gaussian distributions with upper bounds whose parameters fit well in the first and third subsets. Description of the selection function. The selection function is normalized to the limit of a two-parameter Gaussian distribution with a standard deviation of σ = 1.15 for both stress cases. Under both stress conditions, as the stress increases, the energy utilization rate always decreases at the same rate. Due to the different experimental schemes chosen, broken products absorb some kinetic energy in the case of crushing of impact stress, so the energy loss is larger. Compared with the crushing of crushed stress, the crushed product is coarse, and under the same stress-work condition, the energy utilization is only half of crushed crushed stress.