This standard specifies the terms and definitions, technical requirements, test methods, evaluation of overflow ball mill energy consumption and the labeling of energy consumption level for overflow type ball mill for mining. This standard applies to overflow ball mills.
1.Terms and Definitions
What GB/T7679.5 established as well as the following terms and definitions apply to this standard.
1.1 Working conditions
The material to be ground with feed size not more than 12.5mm, sieve rate not less than 80%, and discharge size not more than 0.075mm. The work index of the material is 13kW-h/t, and the universal hardness is f=8~12; the working condition of the overflow ball mill is continuously feeding.
1.2 Energy consumption index
Under the specified standard working conditions, the ratio of the measured power to the processing capacity of the overflow ball mill is expressed in kW-h/t.
1.3 Value of energy saving evaluation
Achieve the energy consumption index value required for energy-saving products.