Mining vibrating screens are mainly used to screen sand of different particle sizes, and remove impurities and particles that do not meet specifications through screening to ensure the quality of the finished product. Although the vibrating screen can remove some impurities, it needs to be combined with a sand washer in actual production to achieve high-quality sand and gravel requirements.

 

Limitations of impurity removal by vibrating screens

 

1. Boundaries of physical screening are limited

 

Vibrating screens mainly rely on the mesh aperture to separate impurities (such as large-grained stones, coarse mud and sand), but have limited effects on ultra-fine mud powder or adhesive impurities with a particle size of less than 0.075mm. For example, clay will clog the screen, and wet sand is easy to agglomerate, resulting in a sharp drop in screening efficiency. At this time, the water flow flushing force of the sand washer is required to destroy the combination of mud and sand.

 

2. Incomplete dehydration

 

The vibrating screen can achieve initial dehydration through high-frequency vibration, but the moisture content of the finished sand may still be greater than 8%, affecting subsequent storage and concrete mix ratio. The spiral or impeller structure of the sand washer can force extrusion drainage and significantly reduce the moisture content.

 

YKR circular vibrating screen can provide one-layer, two-layer, three-layer or multi-layer vibrating screens according to different customer needs, and can be used for dry or wet screening operations, and is widely used in mining, building materials, transportation, energy, chemical and other industries.

 

ZKR linear vibrating screen is mostly used for dehydration and desludging of materials, and linear vibrating screen is widely used in the mining industry.

 

The core value of sand washing machine

 

Sand washing machine deeply cleans sticky impurities, and peels off the mud film wrapped on the surface of sand particles through water rolling friction. It is especially suitable for weathered sand and raw materials with mud content > 10%.

 

1. Bucket wheel sand washing machine consumes less water and has low fine sand loss rate, which is suitable for small and medium-sized production.

 

2. Spiral sand washing machine has a large processing capacity and can simultaneously classify coarse/fine sand, which is suitable for large production lines.

 

The vibrating screen is the foundation of mining, and the sand washer is the guarantee for upgrading. If only coarse impurities (such as stone chips and dead branches) need to be removed, the vibrating screen can work independently. If you pursue fine sand with low mud content, low water content and high cleanliness, the sand washer is indispensable.

 

Luoyang Dahua Heavy Industry Science and Technology Co., Ltd.is a direct sales manufacturer integrating R&D, production, sales and service. It provides various types of mining crushing equipment, and its high quality is more reliable. It optimizes the combination of various types of equipment, tailors supporting equipment and construction plans to meet different process requirements, and serves you from equipment selection, site inspection, equipment manufacturing, installation, commissioning, delivery and use.