Large continuous planetary ball mill

Abstract

The present invention relates to pulverizing apparatus, and is especially one continuously producing planetary ball mill with great flow rate. The planetary ball mill includes main shaft, central gear, idle gear, grinding barrel and grinding barrel gear. The ratio between the effective inner diameter D1 of the grinding barrel and the distance R0 between the grinding barrel axis and the spindle axis is 1 to 0.8-1.2, and the ratio between the teeth number Z1 of the grinding barrel gear and the teeth number Z2 of the central gear is 1 to 0.8-1.2. The present invention has high efficiency, great flow rate, low power consumption and low alloy steel wear.

Description

technical field [0001] The invention relates to a grinding equipment, in particular to the planetary ball mill technology for large-flow continuous production. Background technique [0002] Ball mill is a large-scale powder processing industrial equipment, widely used in building materials, electric power, metallurgy, mining, chemical industry and other fields. The total domestic powder processed by it is more than 2 billion tons, including 800 million tons of cement, 960 million tons of pulverized coal, 80 million tons of blast furnace slag, and 200-300 million tons of others, which play a relatively large role in the national economy. However, due to the low working efficiency of the ball mill (its crushing effective power only accounts for less than 10% of the total power of the mill), and the high wear and tear on the hard alloy steel, the average energy consumption per ton of powder is 30-50 kWh in terms of total power consumption At 60 to 100 billion degrees, the aver...

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Problems solved by technology

However, due to the low working efficiency of the ball mill (its crushing effective power only accounts for less than 10% of the total power of the mill), and the high wear and tear on the hard alloy steel, the average energy consumption per ton of powder is 30-50 kWh in terms of total power consumption At 60 to 100 billion degrees, the average wear of steel balls, forgings and mill liners is 0.5kg / t, and the annual consumption of alloy steel is about 1 million tons. Therefore, how to improve the crushing efficiency of ball mills and reduce the wear of alloy steel is not only in line with industrial policies : Energy saving, material saving, and considerable economic and social benefits

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