{"id":6392,"date":"2025-11-26T15:15:22","date_gmt":"2025-11-26T07:15:22","guid":{"rendered":"https:\/\/www.darko-tech.com\/?p=6392"},"modified":"2025-11-26T15:52:45","modified_gmt":"2025-11-26T07:52:45","slug":"causes-and-prevention-methods-for-arching-and-blockage-in-cement-silos","status":"publish","type":"post","link":"https:\/\/www.darko-tech.com\/ru\/causes-and-prevention-methods-for-arching-and-blockage-in-cement-silos\/","title":{"rendered":"\u041f\u0440\u0438\u0447\u0438\u043d\u044b \u0438 \u043c\u0435\u0442\u043e\u0434\u044b \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0430\u0440\u043e\u043a \u0438 \u0437\u0430\u0441\u043e\u0440\u043e\u0432 \u0432 \u0446\u0435\u043c\u0435\u043d\u0442\u043d\u044b\u0445 \u0441\u0438\u043b\u043e\u0441\u0430\u0445"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6392\" class=\"elementor elementor-6392\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eac1e79 e-flex e-con-boxed e-con e-parent\" data-id=\"eac1e79\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a11e960 elementor-widget elementor-widget-heading\" data-id=\"a11e960\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1. Introduction to the Arching Phenomenon and Its Harm<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cde35dc elementor-widget elementor-widget-text-editor\" data-id=\"cde35dc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The cement industry now mainly uses bulk cement. This is because bulk cement is more environmentally friendly and allows for accurate measurement. Modern <a href=\"https:\/\/www.darko-tech.com\/products\/cement-silo\/\">cement silos<\/a> do more than just store cement. They also provide dust removal, break arching, and weighing functions. However, arching inside these silos is a common and serious problem. This issue requires a good solution.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f6fbb2 elementor-widget elementor-widget-text-editor\" data-id=\"7f6fbb2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Arching happens when cement forms a stable bridge over the outlet. This bridge stops the cement from flowing out. This blockage causes major problems. First, it stops the supply of cement to the mixing station. This interrupts production and increases downtime. Second, it leads to uneven cement feeding. This directly harms the accuracy of the weighing and batching process.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29aa3fe elementor-widget elementor-widget-heading\" data-id=\"29aa3fe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2. Reasons for Arch Formation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a53d8ed elementor-widget elementor-widget-text-editor\" data-id=\"a53d8ed\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Several factors work together to cause arching.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a133f2 elementor-widget elementor-widget-text-editor\" data-id=\"5a133f2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>First, cement has internal cohesion and internal friction. These forces create shear strength. This strength makes the cement act like a solid block. It prevents particles from moving freely. So, the cement&#8217;s flowability becomes poor.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f1f1c2 elementor-widget elementor-widget-text-editor\" data-id=\"5f1f1c2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Second, external friction between the cement and the silo wall is important. A rough wall surface increases this friction. Also, a small cone angle at the bottom makes the problem worse. More friction makes arching more likely.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d9ef2a elementor-widget elementor-widget-text-editor\" data-id=\"4d9ef2a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Third, outside air conditions affect cement. High humidity makes cement particles stick together. This increases cohesion and reduces flowability. Consequently, the cement becomes more solid and prone to arching.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b58da2 elementor-widget elementor-widget-text-editor\" data-id=\"8b58da2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Finally, the outlet size is critical. A small outlet reduces the flow channel for the cement. This smaller channel greatly increases the risk of forming a stable arch.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06b0562 elementor-widget elementor-widget-image\" data-id=\"06b0562\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog-1024x768.png\" class=\"attachment-large size-large wp-image-6393\" alt=\"Causes of arching and blockage in cement silos\" srcset=\"https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog-1024x768.png 1024w, https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog-300x225.png 300w, https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog-768x576.png 768w, https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog-16x12.png 16w, https:\/\/www.darko-tech.com\/wp-content\/uploads\/2025\/11\/Causes-of-arching-and-blockage-in-cement-silos-blog.png 1080w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6fbbaa elementor-widget elementor-widget-heading\" data-id=\"e6fbbaa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3. How to Prevent Arching in Cement Silos<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0f1c7b elementor-widget elementor-widget-text-editor\" data-id=\"b0f1c7b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>We need a full-system plan to prevent arching. This plan must cover silo design, construction, and daily operation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4e4da9 elementor-widget elementor-widget-heading\" data-id=\"e4e4da9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.1 Use Side Discharge as an Effective Method<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40d101b elementor-widget elementor-widget-text-editor\" data-id=\"40d101b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Choosing a silo with side discharge is a very effective design. This design creates a vertical wall at the discharge point. This wall reduces pressure above the outlet and breaks the &#8220;arch foot.&#8221; We can also use multiple or offset outlets. Adding too many outlets is not cost-effective and makes operation difficult.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f122fe elementor-widget elementor-widget-heading\" data-id=\"3f122fe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3.2 Reduce Internal Friction<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3cd4717 elementor-widget elementor-widget-text-editor\" data-id=\"3cd4717\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>We must make the silo wall very smooth. A smooth wall helps the cement slide down easily. Steel plates make the best inner surface. However, for cost and heat transfer reasons, most silos use concrete. Concrete walls are rough. Therefore, we often line the hopper with steel plates or special cast stone. We can also paint the wall with smooth coatings like epoxy resin. These steps significantly reduce friction.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-223ed65 elementor-widget elementor-widget-heading\" data-id=\"223ed65\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3.3 Control Moisture Entry<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed47679 elementor-widget elementor-widget-text-editor\" data-id=\"ed47679\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Cement easily absorbs water. The finer the cement, the more water it absorbs. After cement absorbs water, its particles hydrate. This makes them stick together and flow poorly. Then, the cement forms skins and arches. So, we must strictly control all moisture sources.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-97ac397 elementor-widget elementor-widget-text-editor\" data-id=\"97ac397\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><p class=\"ds-markdown-paragraph\">First, reduce the moisture content in the cement itself when it enters the silo.<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Second, prevent any rainwater from leaking into the silo.<\/p><\/li><li><p class=\"ds-markdown-paragraph\">Third, and very importantly, stop moisture from the air compressor system.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4809e9c elementor-widget elementor-widget-heading\" data-id=\"4809e9c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3.4 Dry the Compressed Air<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0ab4f9 elementor-widget elementor-widget-text-editor\" data-id=\"b0ab4f9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">Compressing air reduces its volume. This also reduces its capacity to hold water vapor. Therefore, most moisture in the air turns into liquid water during compression. If this water enters the silo, it causes big problems. We must remove this moisture at all stages: compression, storage, distribution, and use. Dry air from the aeriation system is essential to prevent arching.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0d6991 elementor-widget elementor-widget-text-editor\" data-id=\"b0d6991\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><p class=\"ds-markdown-paragraph\"><strong>Air Compression<\/strong>: The operator must ensure the compressor&#8217;s coolers work well. They should check the outlet water temperature by hand regularly. The cooler tubes can crack and leak, so we must fix any issues immediately.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Air Storage<\/strong>: The air receiver tank collects water and oil. The operator must regularly open the drain valve at the bottom to remove this liquid.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Air Distribution<\/strong>: As air moves through pipes, it cools down further. More water condenses inside the pipes. So, we need drain valves on the pipelines and must use them daily.<\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong>Air Usage (Final Defense)<\/strong>: We use two filters before air enters the silo. The first is a main-line filter filled with coke. The second is a tube-type filter on each branch line. Moist air enters this filter, and its tiny pores trap the water. The water then flows down to a drain valve. The operator must drain it regularly. Dry air then goes to the silo.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8a2447 elementor-widget elementor-widget-heading\" data-id=\"d8a2447\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3.5 Increase the Cone Angle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-beb0f28 elementor-widget elementor-widget-text-editor\" data-id=\"beb0f28\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>We make the cone part steeper. The angle should be bigger than the cement&#8217;s friction angle against the wall (about 32\u00b0). A steeper angle, between 55\u00b0 and 65\u00b0, reduces friction. But, a steeper cone makes the silo taller or reduces its capacity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89256eb elementor-widget elementor-widget-heading\" data-id=\"89256eb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3.6 Enlarge the Outlet Diameter<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca4a0a4 elementor-widget elementor-widget-text-editor\" data-id=\"ca4a0a4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A larger outlet diameter prevents a stable arch from forming. 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href=\"https:\/\/www.darko-tech.com\/products\/boiler-bag-filter\/\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/www.darko-tech.com\/wp-content\/uploads\/2024\/08\/boiler-bag-filter.jpg);\" role=\"img\" aria-label=\"The Boiler Bag Filter showcases its role in managing emissions in the industrial space.\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tBoiler Bag Filter\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>1. Introduction to the Arching Phenomenon and Its Harm The cement industry now mainly uses bulk cement. This is because bulk cement is more environmentally friendly and allows for accurate measurement. Modern cement silos do more than just store cement. They also provide dust removal, break arching, and weighing functions. However, arching inside these silos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6393,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Causes and Prevention Methods for Arching and Blockage in Cement Silos | DARKO<\/title>\n<meta name=\"description\" content=\"This article analyzes the causes of cement silo arching &amp; blockage, including material properties, silo design, and moisture. 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