Classification
Ball and rod mill cylinder
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Product details
I. General Foundation (Common Features of Both Cylinders)
The cylinder is the core rotating cavity of the mill, a horizontal hollow cylinder, made of steel plates welded together (commonly using Q235, 16Mn low alloy steel plates), with flanges welded at both ends to fit end covers and a hollow shaft. It is mounted on the main bearings and driven by the motor to rotate at a low speed.
1. Core Function: It accommodates the grinding media (steel balls / steel rods) and the materials to be ground; rotating to lift and impact the media for grinding the ore; it must withstand the continuous impact and alternating loads from the media and materials, and must have high rigidity and bending strength.
2. General Structural Components
1. Inner wall with wear-resistant lining: To prevent the steel media from directly wearing the cylinder shell;
2. The cylinder is equipped with rounded rectangular maintenance grinding doors: For replacing the lining, loading and unloading the grinding media, and internal maintenance. Reinforcing steel plates are added at the opening to prevent stress cracking;
3. The outer ring of the cylinder is fixed with a large gear ring, serving as the transmission force-bearing part. The cylinder body structure diagram of the rod mill
II. Cylinder of Ball Mill (Distinctive Features)
1. Length-to-Diameter Ratio: It is divided into short cylinder for coarse grinding (L/D = 1~2) and long cylinder for fine grinding (L/D = 3~5, commonly used in the cement industry);
2. Suitable Media: The internal part is filled with steel balls, and the media is in point contact for crushing;
3. Lining: Mostly uses high-wavelike and stepped linings to increase the height of the steel ball drop and enhance the impact and crushing;
4. Application Scenarios: Fine grinding, ultra-fine grinding, producing fine powder.
III. Cylinder of Rod Mill (Distinctive Features)
1.
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Working principle: Integrating mechanical, hydraulic, electrical, automation and other technologies, the horizontal shaft is driven by an electric motor to rotate, and the eccentric sleeve is driven by gears to rotate, thereby driving the dynamic cone to make circular oscillations, achieving continuous extrusion and crushing of materials. The crushing chamber is optimized in design, and the crushing effect is not affected by liner wear.
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Smelting equipment (blast furnace, converter, electric furnace supporting equipment)
Core positioning: The core equipment for coarse crushing of large materials is mainly used at the front end of the crushing production line to crush large raw materials (with a maximum feed particle size of 1200mm) to ≤ 80mm, laying the foundation for subsequent crushing processes. It is an essential front-end equipment for cement and mining production lines. Working principle: Adopting the principle of squeezing and crushing, the large pieces of material falling between the fixed jaw plate and the moving jaw plate are squeezed and crushed through the reciprocating biting motion of the two jaw plates, achieving coarse crushing processing. It is divided into two types: single elbow plate and double elbow plate. The single elbow plate model has higher production capacity and is suitable for high-yield demand scenarios. Core advantages: simple structure, convenient operation, long service life of wear-resistant parts, large crushing ratio, stable output, suitable for high hardness materials (such as limestone and iron ore), low maintenance cost, suitable for various types of production lines from small to large. Adaptation scenarios: coarse crushing of raw materials in cement production lines, coarse crushing in mining, raw material crushing in sand and gravel yards, coarse crushing in construction waste recycling, etc. Corresponding images (high-definition without watermark, available for direct image search): actual photos of the entire jaw crusher, close-up shots of the jaw crusher feed inlet, jaw crusher mining site, and details of the jaw crusher transmission device.
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