Electromagnetic powder ultrasonic test sieve

Saturday July-05 2025  16:44:56

What is a electromagnetic powder ultrasonic test sieve?

Electromagnetic powder ultrasonic test sieve is a high-precision screening equipment that integrates traditional electromagnetic vibration and ultrasonic technology. It is widely used in the fineness detection and screening of powder materials. With ultrasonic screen cleaning technology, it effectively solves the problems of agglomeration and screen blocking when screening fine powders above 325 mesh, and the screening accuracy can reach more than 99%. From 20 mesh coarse screening to 500 mesh ultra-fine grading, a rich selection of mesh numbers and customized screen configurations are suitable for various powder materials such as apatite, salts, and chemical raw materials.

What is the electromagnetic powder ultrasonic test sieve used for?

The electromagnetic powder ultrasonic test sieve is mainly used for particle size analysis, graded screening and quality control of fine powders. It is particularly suitable for materials with high static electricity, easy agglomeration, strong adsorption or ultra-fine particle size, such as electromagnetic powder. For materials that are easy to clog the screen (such as high static electricity, strong adsorption powder), the ultrasonic system can improve the screening efficiency (pass rate of 99.5%) and output (0.5-10 times higher than ordinary vibrating screen).

Particle size detection and screening of electromagnetic powder and nanopowder

Ultrafine powder screening analysis in fine chemicals, medicine, food, electronic materials and other industries

Quality control and particle size analysis in laboratories and production processes

What are the characteristics of electromagnetic powder ultrasonic test sieve?

Electromagnetic powder is usually more than 200 meshes due to its fine particles, and its surface is prone to static electricity and agglomeration. In the traditional mechanical vibration screening process, electromagnetic powder is very easy to clog the screen hole, resulting in frequent clogging of the screen and low screening efficiency. At the same time, the powder is also easy to fly during the screening process, causing dust pollution and material loss.

The electromagnetic powder ultrasonic test sieve adds an ultrasonic vibration device to the traditional electromagnetic vibration screen, so that the screen generates high-frequency, micro-amplitude ultrasonic vibration, which effectively destroys powder agglomeration and electrostatic adsorption and prevents clogging of the screen holes. The synergistic effect of ultrasonic vibration and electromagnetic vibration enables the material to move and separate smoothly on the screen, greatly improving the screening efficiency and screening accuracy, especially suitable for 80-600 mesh ultrafine powder screening.

Recommended mesh number of electromagnetic powder ultrasonic test sieve

The recommended mesh number of electromagnetic powder ultrasonic test sieve mainly depends on the particle size distribution and screening accuracy requirements of the electromagnetic powder.

Generally speaking: for electromagnetic powder with coarse particle size, 100 mesh to 200 mesh (about 150 microns to 75 microns) screens are commonly used; for ultrafine electromagnetic powder, it is recommended to use 200 mesh or more, usually 250 mesh, 300 mesh or even 400 mesh (about 53 microns to 37 microns) screens.

Particle size range (micrometers)	Recommended sieve mesh	Applicable instructions
150-75	100-200	Coarse to medium particle size electromagnetic powder screening
75-53	200-250	Fine particle size electromagnetic powder screening
53-45	250-300	Ultrafine electromagnetic powder screening
45-37	300-400	Ultrafine electromagnetic powder and nano-powder screening

Ultrasonic vibration can effectively prevent fine powder from blocking the screen, especially suitable for ultrafine powder screening above 200 mesh. Therefore, when the electromagnetic powder fineness is high, it is recommended to choose a sieve of about 300 mesh to ensure screening accuracy and efficiency. The specific mesh number should be selected in combination with the actual powder particle size distribution and screening target.

Selection of electromagnetic powder ultrasonic test sieve

When choosing an electromagnetic powder ultrasonic test sieve, the adaptability of the mesh number is directly related to the test results and production quality. From a scientific research perspective, when studying nano-scale powder materials, a sieve with a mesh number of 500 or even higher is required to accurately separate ultrafine particles; in chemical production, if the raw materials are to be tested for particle size, a 200-300 mesh sieve can quickly screen out qualified particle sizes.

How to use electromagnetic powder ultrasonic test sieve

Preparation stage: Select a sieve suitable for the particle size distribution of electromagnetic powder (80-600 mesh is recommended, 200-400 mesh is commonly used). Place the electromagnetic powder sample evenly on the top sieve. Connect the ultrasonic generator and electromagnetic exciter, and check whether the power supply and circuit are normal.

Operation stage: Start the equipment, first turn on the electromagnetic vibration, so that the material moves three-dimensionally on the screen surface to promote dispersion. Generally 3-10 minutes, the specific time depends on the amount of material and the mesh size. After the screening is completed, turn off the equipment, collect the material in each layer of the sieve, and record the particle size distribution data.

Precautions: Please wear protective equipment during operation to avoid inhaling dust. Make sure the equipment is grounded to prevent static interference. Ultrafine powders (such as above 400 mesh) require increased ultrasonic power. If the screening efficiency is low, check the mesh size of the sieve or increase the screening time.

In addition, in actual operation, the problem of material blocking is often encountered. The efficiency of ordinary vibrating screens drops sharply under high mesh screening, while the ultrasonic cleaning function of the electromagnetic powder ultrasonic test sieve can effectively solve the problem of blocking when screening above 325 meshes, ensuring screening continuity.