ceramic foam filter manufacturing process<\/a>. There are currently two main methods for determining porosity.<\/p>\nOne is to calculate the volume of the hole in the filter plate according to Archimedes’ law, that is, to inject water into the glass beaker with the overflow pipe until that water is flowing from the overflow pipe, and the water will be tested when the water is no longer flowing. All samples are gently placed in water, then water flows out of the overflow tube and the volume of water in this part is measured. The volume of the overflow water is subtracted from the physical volume of the filter plate, which is the total volume of the filter plate holes. volume.<\/p>\n
Another method is to separately determine the actual density and the bulk density of the test sample, and then calculate the porosity of the sample according to the following formula.<\/p>\n
These two methods have their own advantages and disadvantages. The method of operation is simple and convenient, and the detection speed is fast, but its fatal weakness is due to the water absorption characteristics of the filter plate material itself, so that the volume of water discharged is less than the actual volume. This makes the measured data too small.
\nAlthough the test process of the second method is more complicated, the influence of water absorption of the filter plate material is excluded during the test and the data obtained is relatively accurate.<\/p>\n
The porosity index is determined to be greater than 84% in this standard. Pore \u200b\u200buniformity is used to describe the difference between the number of actual holes per 25.4mm length in the filter plate product and the number of holes theoretically required.<\/p>\n
The smaller the space, the better the quality of the product, and the space is too large, which will cause the ability of the filter plate product to reduce the retention of impurities or the slow filtration rate of the cast iron, which will not meet the user’s individual production requirements.<\/p>\n
The size of the pore uniformity mainly depends on the foam used in the production of the filter plate. The pore uniformity of the foam is good and the pore uniformity of the filter plate is good, so the choice of the foam is extremely important.<\/p>\n
(Number of holes in any length of 25.4mm) 10p 7 \uff5e 13 20p 17 \uff5e 23 30p 27 \uff5e 33 40p 37 \uff5e 43 50p 47 \uff5e 53 60p 57 \uff5e 63 This standard determines the uniformity of pores as data required in the table above. During transportation and use, the filter plate should withstand the impact of a certain pressure from the outside, so the compressive strength index is also introduced into the standard as one of the bases for measuring the quality of the filter plate. The higher the compressive strength, the more durable the product, the better the quality and vice versa.<\/p>","protected":false},"excerpt":{"rendered":"
Porosity is the percentage of the total volume of cavities in the ceramic foam filter plate product relative to the total volume of the filter plate product. Porosity determines the filtration capacity of the ceramic foam filter plate per unit volume. The greater the porosity, the greater the filtration rate of the filter plate and […]<\/p>\n","protected":false},"author":1,"featured_media":7851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[24135,24136],"class_list":["post-7850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-filter-porosity","tag-metal-filtration-capacity"],"yoast_head":"\n
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<\/p>\n