Abstract
At present, cement is the most common binding material widely used in construction work. Recently, high-quality cement has become increasingly used in comparison with ordinary cement. This is due to the fact that the use of high grade cement requires a smaller amount for the preparation of mortar, it is economically viable, because in today's market, cement has a relatively high cost. The high price is a consequence of the high energy costs associated with the production of cement. This implies the need to find ways to intensify the technological process of cement production. The authors of this article continue to conduct scientific research, which consists in substantiating the rationality of recovery a double-ball media in the second chamber mill. This paper compares the efficiency of the second chamber of the mill when using a double-ball grinding media in comparison with several variants of the traditional media and thoroughly proves the rationality of replacing the traditional types of grinding media with a double-ball. Based on the results of previous studies, several of the most characteristic assortments of double-ball media are selected, which made it possible to obtain a finished product with a high fineness of grinding in a relatively short grinding time. The first variant of the traditional loading is characterized by the fact that the second chamber of the mill is loaded with an assortment of grinding bodies consisting only of balls of the same diameter; the second variant differs from the first in that the grinding balls are replaced with cylpebs. Meanwhile, the assortment of grinding media for the first chamber is the same
Highlights
The authors of this article continue to conduct scientific research, which consists in substantiating the rationality of recovery a double-ball media in the second chamber mill
This paper compares the efficiency of the second chamber of the mill when using a double-ball grinding media in comparison with several variants of the traditional media and thoroughly proves the rationality of replacing the traditional types of grinding media with a double-ball
The first variant of the traditional loading is characterized by the fact that the second chamber of the mill is loaded with an assortment of grinding bodies consisting only of balls of the same diameter; the second variant differs from the first in that the grinding balls are replaced with cylpebs
Summary
В рамках данных научный исследований использовался клинкер, производства ЗАО «Осколцемент» фракции -5+1,25 мм. Заменяя двухшаровую загрузку в мельнице на традиционную (ТРЗ1) у готового продукта по завершению процесса помола наблюдается уменьшение величины удельной поверхности на 14 % и увеличение в 2 раза суммарного остатка на сите No008. Заменяя во второй камере мельницы ассортимент мелющей загрузки ТРЗ1 (состоящей из размольных шаров одного диаметра) на цильпебс, наблюдается увеличение в 2 раза суммарного остатка на сите No008 и примерно на 5 % уменьшается удельная поверхность на момент окончания помола клинкера. В случае замены цильпебса на мелющие шары одного диаметра (помол на загрузке ТРЗ1) наблюдается увеличение количества частиц размером менее 5 мкм на 3 %, уменьшение содержания частиц размером более 30 мкм на 5 %, но при этом доля средней фракции изменяется не значительно. Кинетика изменения полного остатка на сите No008 размалываемого клинкера во II камере
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