Analysis of Comprehensive Characteristics of Mugwort-residue Powder After Moxa Preparation
At present,the mugwort-residue after the moxa preparation has not been deeply utilized,it is a waste of the resources of Chinese medicinal materials.Moreover,the investigation of micromeritic properties of the mugwort powder is rarely reported.Both of these problems hinder the sustainable development of the mugwort industry.It is necessary to analyze characteristics of the mugwort powder to provide reference for the treatment technology of classification,dispersion,packaging,granulation and related processing machinery.The mugwort-residue after the moxa preparation using the stone mill was used as the experimental material,the multi-scale powder was prepared by the mechanical shear pulverization.The BT-1000 powder comprehensive characteristic tester was employed to measure micromeritics parameters such as the repose angle,the collapse angle,the apparent density,the tap density and the dispersity,and then the influences of the particle size and the moisture content on the flowability,the compressibility and the floodability were analyzed.The experiment analysis revealed that the particle size and the moisture content had obvious influences on the comprehensive properties of the powder.With the increase of the particle size,the flowability decreases first and then increases,while the compressibility and the floodability increase first and then decrease.With the increase of the water content,the flowability and the floodability gradually decrease,but the compressibility gradually increases.Since θr<45 °,θf<40 °,θd<15 °,Cp<20%,Da<20%and according to the Carr flowability index evaluation table and the Carr floodability index evaluation table,it was identified that the powder had the weaker flowability,compressibility and floodability.Based on the conclusions of this experiment,the particle size or the moisture content can be used to control some micromeritics characteristics of powder to satisfy the requirements of the specific processing technology,and also provide the design basis for the structural optimization of the powder processing machinery,and promote the reuse of Chinese medicinal materials processing residues.
国家科技期刊平台
NSTL
万方数据
维普
