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From the analysis of crushing mechanism, regardless of the ball milling, the abrasive medium (ball or rod) mounted in the cylinder, under the effect of friction and centrifugal force, as the cylinder is rotated It is enhanced to a certain height, then shocks, grinds and extruded on the barrel, so that it is pulverized.
1, the outer structure analysisis different, the ratio of the length of the baseball mill body is generally 1.5-2.0, and the inner surface of the lining on the end cover It is a vertical plane. The length of the ball mill is smaller and the ratio of the diameter is smaller, and the ratio in most cases is only slightly greater than 1.
Further, the baseball mill tubular speed is lower than the working speed of the same specification ball mill, so that the medium within the laxative state is operated.
2, type analysis (different mine mode)In the ball mill, a plaid-type ball mill and overflow ball mill (naming is derived from different mineral construction), and Baseball mill does not need plaid mine, only two kinds of overflow and open type, the diameter of the hollow shaft in the mineral end is generally larger than the same specification ball mill.
3, the abrasive medium analysis
The baseball mill is used as a steel rod having a diameter of 50-100 mm as a grinding medium, and a ball mill is used as a grinding medium, and the abrasive body is different. It is the main difference between the two.
The steel ball of the ball mill is in contact, and the steel rod of the baseball mill is a line contact, so the working characteristics of the two have a significant difference.
The medium filling rate refers to a percentage of the mine mill. For different milling, the ball mill structure, operating conditions, the shape of the medium, and the medium filling rate has a suitable range, too high or too low, affecting the milling effect. Usually, the filling rate of the ball mill is 40% -50%, the baseball mill is 35% -45%, and the filling ratio of the self-ball mill is 25% -40% here, and the filling rate of the gravel mill is about 43%.
5, Performance Analysis
The process characterized by the baseball mill is a rough product, but the particle size is uniform, the coarse particles and smaller are small, and the particle size of the rod mill is lighter. Characteristics are related to the case of rod milling ore.
The performance characteristics of the ball mill is high production capacity, strong adaptability to the material, the material is high, and the particle size is fine, it is easy to fine grind, and the energy saving is more significant, but its overstrus is serious.
6, Stability AnalysisThe ball mill has no inertial impact, ensuring that the equipment can be normal, the operation is reduced, and the equipment's downtime is reduced, and the efficiency of production is improved.
7, use analysis
When reselection or magnetic selection of tide tin ore and other rare metallic mines, a baseball mill is often used to prevent production of pulverization; in the second-stage grinding process Generally, the baseball mill is used as a segment milling equipment, and the production capacity is large, and the efficiency is also high. When processing softer or less hard ore, the baseball mill can be used instead of the short-head cone crusher, not only the configuration is simple, the cost is also low, and the dust removal can be made to the workshop.
Burgling mills are prone to crushing phenomena due to fine grinding materials, and is not suitable for reselection production lines in metal mineralization.
