Vibrating screen for gypsum processing

The vibrating screen for gypsum processing is a screening equipment used for particle size grading, impurity removal or dehydration of gypsum ore or gypsum powder. It is widely used in the pre-crushing screening, pre-grinding grading and finished product screening of raw materials such as building gypsum, desulfurized gypsum, and phosphogypsum. Because gypsum materials have the characteristics of large particle size span, easy moisture absorption and agglomeration, and high dust, the vibrating screen used is usually required to have anti-blocking nets, good sealing and high screening efficiency.

According to different process requirements, single-layer or multi-layer screening structures can be selected. For example, circular vibrating screens are often used to remove large impurities in the coarse screening stage, linear vibrating screens are often used for particle size control in the medium screening and grading stages, and rotary vibrating screens are often used in the fine screening stage to finely grade gypsum powder.

What types of vibrating screens are there for gypsum processing?

In the field of gypsum processing, vibrating screen is an indispensable key equipment. It mainly uses the principle of vibration to efficiently screen gypsum particles and powders, achieve accurate classification of different particle sizes, and effectively separate impurities. The vibrating screens used in gypsum processing mainly include rotary vibrating screens (circular vibrating screens), linear vibrating screens, ultrasonic vibrating screens, etc., which ensure that the gypsum raw materials required for subsequent production links meet strict fineness requirements, thereby ensuring the quality and performance of the final gypsum products. It is an important guarantee for improving efficiency and product quality in modern gypsum production lines.

Rotary vibrating screen (circular vibrating screen): Using a vertical vibrating motor as an excitation source, the screen surface produces horizontal, vertical, and inclined three-dimensional vibrations, and the material moves in a spiral motion on the screen surface to achieve layered screening.

Features: small size, easy installation, suitable for fine screening of small batches of gypsum powder (such as ultrafine powder above 325 mesh).

Screening accuracy: high (up to 95% or more), 1-5 layers of screens can be configured to achieve multiple particle size classifications.

Applicable scenarios: fine screening of gypsum powder deep processing (such as gypsum retarder, gypsum-based paint), removal of impurities or grading by particle size.

Linear vibrating screen: Two vibrating motors of the same model rotate in opposite directions to generate excitation force of linear motion trajectory, and the material moves linearly on the screen surface to complete screening.

Features: large processing capacity, high screening efficiency, suitable for coarse or medium screening of gypsum particles (such as desulfurized gypsum, coarse particles after natural gypsum crushing).

Screen surface length: adjustable, the material stays on the screen surface for a long time, and the grading effect is stable.

Applicable scenarios: preliminary screening after gypsum ore crushing (such as separating coarse particles > 10mm), particle size grading of gypsum mortar raw materials.

Ultrasonic vibrating screen: On the basis of the rotary vibrating screen, an ultrasonic screening system (ultrasonic power supply, transducer, etc.) is superimposed to make the screen produce high-frequency micro-vibration to avoid fine powder agglomeration or clogging of the screen holes.

Features: Specially designed for high-purity and high-fineness (such as 800 mesh and above) gypsum powder screening, solving the problem of fine powder blocking that is difficult to handle with ordinary vibrating screens.

Screening accuracy: High, can screen sticky and easily agglomerated materials (such as gypsum powder) that ordinary vibrating screens cannot handle.

Applicable scenarios: Ultrafine screening of high-end gypsum products (such as medical gypsum, precision casting gypsum), or screening of gypsum powder with high water content.

What is the function of vibrating screen for gypsum processing

During the processing of gypsum, whether it is the mining, crushing, grinding of natural gypsum, or the processing of industrial by-product gypsum (such as flue gas desulfurization gypsum), there are the following requirements:

Grading: Separate gypsum raw materials or finished products according to different particle size requirements to meet the needs of different products (for example, coarse aggregate gypsum for building materials, and ultrafine gypsum powder for fine molds or additives).

Impurity removal: Remove impurities and non-gypsum substances with larger particles mixed in the gypsum raw materials to improve product purity.

Dehydration: For wet-process or water-containing gypsum materials, the vibrating screen can perform preliminary dehydration treatment to reduce the energy consumption of subsequent drying.

Uses of vibrating screens for gypsum processing

The vibrating screen for gypsum processing plays a key role in all aspects of gypsum production. After the gypsum ore is mined, the crushed material is coarsely screened through a circular vibrating screen or a linear vibrating screen to separate large particles larger than 50 mm and return them to the crushing process to ensure that the particle size of the material entering the grinding process is qualified; in the grinding stage, the rotary vibrating screen and the ultrasonic vibrating screen can classify the calcined gypsum powder according to the fineness, for example, α gypsum and β gypsum are screened into different specifications such as 325 mesh and 800 mesh to ensure that the fineness of the finished product meets the standard; in the treatment of slurries such as desulfurized gypsum and phosphogypsum, the dehydrating vibrating screen and the wet linear screen can effectively separate the solid and liquid, reduce the water content of the gypsum slurry to 10%-15%, and recover the solid gypsum; in addition, in the batching of gypsum products, the vibrating screen can also screen the mixture of gypsum powder and additives such as retarders and fibers to ensure that the material uniformity and impurity content meet the requirements, and help produce high-quality gypsum boards, gypsum mortars, medical gypsum and other products.

How to choose a vibrating screen for gypsum processing

In short, the vibrating screen for gypsum processing is an important screening and grading equipment on the gypsum production line. Its role runs through multiple links from raw ore pretreatment to finished gypsum powder quality control, and optimizes the entire production process. By reasonably selecting a vibrating screen, the degree of refinement of gypsum processing can be improved to ensure the quality stability of the final product (such as gypsum board, gypsum mortar, medical gypsum, etc.). If necessary, we can further provide specific model parameters, adapted material particle size or structural diagram.