Horizontal vibrating screens are integral components in the cement industry, primarily used for classification, filtration, and impurity removal. Their operation is based on a straightforward yet effective principle that involves the use of two horizontally mounted motors as the vibration source. These motors generate a linear motion that causes the material to move in a straight line across the screen surface.
Vibration Mechanism
The horizontal vibrating screen employs two side-mounted motors positioned vertically to ensure proper vibration flow. These motors create vibrations that are transmitted to the screen deck, causing the material placed on it to jump and move forward in a linear path. This motion facilitates the separation of materials based on size as they pass through various layers of screens with different mesh sizes.
Material Movement and Separation
As materials enter the screen surface evenly, they are subjected to continuous vibrations which promote their movement across the screen. The multi-layer rectangular screens allow for precise classification by enabling materials of different specifications to pass through each layer and be discharged from separate outlets. This process ensures that oversized particles, impurities, and other foreign matter are effectively removed from the desired product.
Applications in Cement Industry
In cement plants, horizontal vibrating screens serve several critical functions:
Raw Material Screening: During raw material preparation, these screens help in sieving cement raw meals to ensure only particles meeting specific size standards proceed further in processing. Materials not meeting these standards are redirected for additional grinding until they achieve requisite fineness.
Clinker Screening: In clinker grinding processes, horizontal vibrating screens are employed between fine crushers and cement mills to ensure clinker particles are reduced to less than 5mm before final grinding. This step enhances mill output by approximately 30% while reducing electricity consumption by about 18%.
Finished Cement Screening: Prior to packaging, finished cement powder undergoes screening using horizontal vibrating screens to eliminate caking and foreign substances, ensuring compliance with stringent particle size requirements.
Benefits of Horizontal Vibrating Screens
Efficient Impurity Removal: They quickly remove large particles or fine powders with low content.
Accurate Classification: Capable of sorting mixtures into products of varying particle sizes using up to six layers.
Continuous Operation: Designed for uninterrupted processing with automatic discharge of impurities and coarse materials.
Environmental Protection: The airtight design prevents material overflow and external contamination.
Ease of Maintenance: Equipped with simple clamping systems for easy cleaning and screen replacement.
Overall, horizontal vibrating screens play an essential role in optimizing production efficiency within cement plants by ensuring high-quality material separation and minimizing waste.
