Lime powder direct discharge screen

Saturday June-21 2025  19:12:26

The characteristics of lime powder are powdery, light, easy to raise dust, and contain some lumps or impurities (formed during transportation or storage). It needs to be screened, impurities removed, and particle size control. Lime powder direct discharge screen can effectively solve the lime powder processing task. Screening the lime powder before feeding to remove lumps and large particles; screening the lime powder before packaging can ensure consistent particle size and remove foreign matter; screening the lime powder before mixing to ensure uniform powder and improve mixing efficiency. It is suitable for coarse screening, impurity removal or particle size control of fine powder level (such as 80~325 mesh).

The difference between single-vibration source lime powder in-line screen and double-vibration source lime powder in-line screen

The single-vibration source in-line screen has only one vibration motor installed at the bottom, which mainly produces up and down vibrations on the material. It needs to rely on manual or other auxiliary devices to achieve material discharge, and the degree of automation is relatively low.

Features: used for lime powder coarse screening or simple impurity removal, requiring a small processing volume (such as less than 500kg/h)

Double-vibration source in-line screen: The use of dual motors can make the material produce vortex motion on the screen surface, with automatic discharge function, the movement trajectory of the material on the screen surface is more complex, and it can be more evenly distributed on the screen surface, which helps to improve the screening efficiency, and can achieve continuous automatic discharge, which is more suitable for automated production lines.

Features: High screening efficiency and continuous operation are required, lime powder particle size requirements are high, and the screen mesh is fine (above 150 mesh), which solves the problem of easy agglomeration and poor fluidity of materials.

If it is large-scale production, high requirements for screening accuracy and automation, the double-vibration source lime powder direct discharge screen is better; if it is small-scale production, low requirements for automation and simple material characteristics, the single-vibration source direct discharge screen is more cost-effective.

Working principle of lime powder direct discharge screen

Lime powder enters the screen surface from the feed port, and under the action of vibration force, the material moves in a straight or elliptical trajectory on the screen. Vibration makes the material disperse quickly and pass through the screen aperture.

Qualified material: lime powder that meets the particle size requirements (such as 80 mesh or 120 mesh) passes through the screen and is directly discharged from the bottom outlet to enter the next process or collection device.

Unqualified material: larger particles or impurities cannot pass through the screen and are directed to the side impurity discharge port for discharge.

The direct discharge screen adopts a direct discharge structure, the material does not accumulate, the flow is smooth, and it is suitable for large-volume, coarse-screened lime powder processing. The screen angle and vibration frequency are adjustable to optimize the screening efficiency. Some inline screens are equipped with anti-blocking devices (such as bouncing balls or ultrasonic screen cleaning systems) to prevent lime powder from clogging the screen due to moisture or stickiness.

Recommended mesh size for inline screens for lime powder

The common mesh size range for inline screens for lime powder is roughly between 80 mesh and 325 mesh, or even finer. The following are mesh size references for some common application scenarios:

Coarse screening or impurity removal: For example, to remove lime blocks or large particles of impurities, you may choose a screen of about 80 mesh, 100 mesh, or 120 mesh.

Fine screening (common industrial use): Most industrial uses, such as chemicals, building materials, metallurgy, etc., may choose a screen of 150 mesh, 180 mesh, 200 mesh, 250 mesh, or even 300 mesh according to different process requirements. Especially for desulfurized lime powder with high fineness requirements, 180 mesh or 250 mesh is a common standard.

Ultrafine powder screening: If you need to get finer lime powder, you may need a finer screen, but the efficiency of the straight screen in this case will be significantly reduced, and you may even need to consider other types of ultrafine powder screening equipment.

Technical parameters of lime powder direct discharge screen

Application of inline screen in lime powder field

When lime powder direct discharge screen is used in the production of building mortar, concrete, etc., 80 mesh-120 mesh is usually recommended. For example, in the production of mortar for wall building, 80 mesh lime powder can be better mixed with other materials to ensure the workability and adhesion of mortar. When used in the manufacture of chemical products such as calcium carbide and soda ash, 100 mesh-200 mesh is generally required. For example, in the production of soda ash, 150 mesh-200 mesh lime powder can make the reaction more complete, improve product quality and production efficiency.

When used to improve acidic soil, 60-100 mesh is usually recommended. If the mesh is too fine, the cost is high; if the mesh is too coarse, the mixing uniformity of lime powder and soil is not good, and it is difficult to fully exert the improvement effect. For example, in the acidic red soil area in the south, the use of lime powder of about 80 mesh can effectively adjust the soil pH, improve soil structure, and promote the growth of crops. As a slag-making agent in steel smelting, 100-150 mesh is generally recommended. The appropriate mesh number can make the lime powder dissolve quickly in the slag, effectively remove impurities in steel, and improve the quality of steel.

Lime powder direct discharge screen is a device specially used for screening, impurity removal and grading of lime powder. It mainly uses the principle of vibration to make the lime powder move quickly on the screen surface, thereby realizing the separation of materials. If you have specific lime powder screening needs, you can provide more detailed information, such as the required processing capacity, screening accuracy, characteristics of lime powder, etc., so as to select the most suitable straight screen model.