When the processes do not need to wet purification, nor the subsequent step of wet-processed first material, such as ultra-fine non-metallic mineral calcite, talc, wollastonite pulverized product fineness general d97≥5um, the current Under the condition of grading technology level, the dry superfine pulverization process and the dry superfine pulverizing equipment, such as the Raymond mill classifier, the roller mill, the high speed mechanical impact pulverizer, the ball mill , the vibration mill, the agitating mill, are preferred. , tower mills and jet mills. Some equipments have built-in classifiers. In production, it is necessary to consider matching super-segmentation machines to produce qualified product sizes and meet particle size requirements. The dry superfine pulverization process has the advantages of simple process, no need to configure subsequent filtering, drying and other equipment, easy to operate, easy to realize automatic control, and relatively low running cost. Due to the limitations of dry ultra-fine subdivision technology and equipment, the dry superfine pulverization process is currently difficult to produce ultra-fine powders with d97 ≥ 3 um on a large scale. When it is necessary to produce ultrafine powder of d97≥3um or less, or when the final product is a slurry or a filter cake, the wet superfine pulverization process is preferred. In addition, the pulverized material itself is a slurry, and the wet process is preferred regardless of the final product particle size requirement. Because pure ultra-fine grinding operation, the grinding efficiency of wet grinding efficiency than a dry process, low energy consumption per unit of product, some special cases, such as mica pearl mica powder processing, to ensure that the tabular grains and surface gloss The wet superfine pulverization process should be selected. Hdpe Drainage Pipes,Drainage Pipe,Corrugated Pipe For Drainage,Large Diameter Pipes SHANDONG DONGHONG PIPE INDUSTRY CO., LTD , https://www.donghongpipe.com
Selection of dry and wet superfine pulverization processes
Ultra-fine pulverization process design and equipment selection are very important links in ultra-fine powder preparation technology. In design, they are often considered according to the specific conditions of the project. The ultrafine pulverization process has different processes according to different classification methods. For example, the wet pulverization system and the gas-solid phase dry pulverization system which can be divided into liquid solid phase according to the material state, and are divided into continuous system and wet system according to the feeding mode. . This paper mainly studies the selection of dry and wet superfine pulverization processes.