{"id":9934,"date":"2026-09-07T15:21:05","date_gmt":"2026-09-07T07:21:05","guid":{"rendered":"https:\/\/www.clirik.com\/?p=9934"},"modified":"2026-09-09T15:42:26","modified_gmt":"2026-09-09T07:42:26","slug":"raymond-coal-mill-vs-raymond-imp-mill-which-is-better","status":"publish","type":"post","link":"https:\/\/www.clirik.com\/ru\/raymond-coal-mill-vs-raymond-imp-mill-which-is-better\/","title":{"rendered":"\u0423\u0433\u043e\u043b\u044c\u043d\u0430\u044f \u043c\u0435\u043b\u044c\u043d\u0438\u0446\u0430 Raymond \u0438\u043b\u0438 \u043c\u0435\u043b\u044c\u043d\u0438\u0446\u0430 Raymond Imp: \u0447\u0442\u043e \u043b\u0443\u0447\u0448\u0435?"},"content":{"rendered":"
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If you want to grind standard bituminous coal or anthracite, but also want to safely and continuously supply powder to the burner (to avoid deflagration accidents), Raymond coal mill is an undisputed \u201cmust\u201d. However, if the material you have on hand is large and soft (such as lignite, gypsum or clay) and needs to be quickly shattered while drying, then the Raymond Impact Mill (Imp Mill) will definitely win. If these two kinds of equipment are wrong, the replacement cost of wear parts in the later period will definitely make you feel uneasy, and even make the thermal efficiency of the rotary kiln a mess.<\/p>\n\n\n\n

Don\u2019t look at those hyped-up brochures, let\u2019s talk about it directly. We will make a hard core comparison from the material wear, thermodynamics and real maintenance cycle to help your technical team to make a good purchase.<\/p>\n\n\n\n

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M-A-P Selection Matrix: The Engineer\u2019s Decision Base<\/h2>\n\n\n\n

Before looking at the price, the project engineer must hold the raw materials on hand and stick to three hard indicators. We usually use a M-A-P matrix (Moisture moisture, Abrasiveness abrasiveness, Particle size particle size) to lock in which 1 of grinding structures should be used.<\/p>\n\n\n\n

Particle size distribution (PSD)<\/h3>\n\n\n\n

The dynamic grading system determines the fineness of the final powder. The standard Raymond coal mill equipped with a dynamic powder separator has extremely uniform powder size (generally 70-85% of the powder can pass through 200 mesh), which is the lifeblood for the stable combustion of the flame in the rotary kiln. The particle size distribution of the powder ground by impact grinding is relatively wide, which is barely enough for calcination, but if it is directly sent to the direct injection pulverized coal burner, it is almost interesting.<\/p>\n\n\n\n

Limits of moisture handling<\/h3>\n\n\n\n

The impact device is dealing with the rapid evaporation of water, and the squeeze device is several streets away. If Raymond impact mill is equipped with high-temperature air inlet (flash drying), even if the water content on the surface of the raw material is as high as 20%, it can still be eaten. In contrast, the optimal feed moisture of the Raymond coal mill is dead pressure below 10%. If you push wet lignite hard into a standard coal mill, the end result is that the grinding roller skids wildly, and finally the machine is completely suffocated.<\/p>\n\n\n\n

Abrasiveness and ash<\/h3>\n\n\n\n

To deal with highly abrasive materials, only \u201cextrusion grinding\u201d. Raymond coal mill uses heavy-duty cast alloy grinding rollers to crush the grinding ring. High-ash coal or petroleum coke is a piece of cake in front of it, and accessories wear very slowly. The impact mill relies on a high-speed rotating hammer to smash it. If you dare to feed high-ash (high-abrasion) coal into the impact mill, the hammer will have to be scrapped within a few weeks. The toss of shutting down and changing parts alone can make you doubt your life.<\/p>\n\n\n\n

Raymond coal mill: the absolute king of flammable environment<\/h2>\n\n\n\n

This set of equipment takes the vertical \u201cgrinding roller rolling\u201d route, which is designed for explosion-proof safety and high-strength continuous operation.<\/p>\n\n\n\n