Weekly Topic: What is the impact of the rod loading in the coal grinder during slurry preparation on the quality of the ground coal?
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What is the impact of the rod loading in the coal grinder during slurry preparation on the quality of the coal grind?
The amount of rods used and their grading directly affect the particle size of the coal powder, which in turn influences the viscosity of the coal slurry.
More thick rods result in a larger particle size after grinding, while more thin rods lead to a smaller particle size; therefore, it is necessary to adjust the amount of rods used based on actual operation conditions, starting from the initial setting.
1. Affects the particle size distribution of coal. 2. Affects the slurry-forming property of coal. 3. Affects the distribution of water-coal slurry additives.
1. Affects the particle size distribution of coal. 2. Affects the slurry-forming property of coal. 3. Affects the distribution of water-coal slurry additives.
The ratio of components is very important; it affects not only viscosity and particle size distribution but also concentration to a large extent. Furthermore, it has a significant impact on both flowability and stability.
If the proportion of coarse particles is higher, the particle size will be larger; the concentration of the resulting coal slurry will be higher, while its viscosity will be lower. However, its flowability and stability will be relatively poorer, and there will also be increased wear on the pipes. If the proportion of fine rods is higher, the particle size will be smaller; this will increase the viscosity of the slurry produced, leading to higher consumption of additives. Additionally, the concentration will also be lower. Therefore, the proper ratio of components is an important factor in producing qualified water-coal slurry.
I agree with what the moderator said; the amount of grinding rods used and the ratio of different types of grinding rods are crucial, as they allow for precise control over the particle size and thus help to maintain the proper concentration of the coal slurry
The amount of rods and their grading have a significant impact on the coal slurry, mainly affecting the particle size distribution and the concentration of the coal slurry. The steel rods wear out in the grinder; over time, the thinner rods become even finer, and there are also some shorter rods. Therefore, it is necessary to remove from the grinder those rods that have become too thin or are broken, and replace them with new rods. Generally, it is sufficient to add only some thicker rods.
It does not bend, remains straight, and its wear resistance is more than 1.5 times that of hot-rolled round steel. If you are interested, feel free to contact me. The amount of material that can be processed depends generally on the diameter of your grinder and the size of the particle dimensions of the material to be ground!
In addition to being related to the specifications of the rods, particle size is also greatly influenced by the quantity (i.e., the number of rods). Generally, the rods fill 35%-40% of the mill’s volume. Personally, I wonder whether the more rods there are, the finer the particle size that will be produced However, upon further consideration, the more rods there are, the heavier they will be, but their range of motion will be smaller, resulting in less impact force; moreover, the particle size does not necessarily have to be smaller. Is there anyone with experience in this area? I am dedicated to researching and producing the most wear-resistant and durable coal mill steel rods; those interested can stay in touch.