The Hastelloy grindability index tester is an instrument for measuring the grindability of bituminous coal and anthracite coal. According to the grinding law (that is, the energy consumed by grinding pulverized coal is proportional to the new surface area produced by the pulverized coal) as the theoretical basis, designed and manufactured in accordance with GB 2565-87 "Method for Determination of Coal Grindability Index" (Hardgrove Method), the measurement results of this instrument can correctly reflect the difficulty of coal grinding, providing a basis for the design and operation of the coal mill. The machine is mechanically finished, the microcomputer counts, and the counter shows that it will automatically stop at 60 rpm. If the host fails, it can be stopped urgently, and the number of revolutions can be accumulated when starting again. It is widely used in coal, electric power, metallurgy, chemical and other industries.

Hastelloy grindability tester determination method:

The coal sample is made into the specified particle size, after being ground by the Hastelloy grindability index tester, it is sieved under the specified conditions, the quality of the coal sample on the sieve is weighed, and the Hastelloy grindability index is checked from the calibration chart drawn from the standard coal sample. The larger the index, the easier it is to grind.