![hri hardgrove grindability tester hri hardgrove grindability tester](https://unallabmachinery.com/wp-content/uploads/2023/04/hgi-hardgrove-grindability-tester.jpg)
![hri hardgrove grindability tester](https://unallabmachinery.com/wp-content/uploads/2023/04/hgi-hardgrove-grindability-tester-2.jpg)
Hardgrove Grindability Index Machine is designed and manufactured according to the ASTM D 409/D409M – 12 standarts.
Hardgrove Grindability Index Machine is designed and manufactured according to the ASTM D 409/D409M – 12 standarts.
Hard Grove Index The tester operates according to the principle of grinding a certain quantity of dry coal sample in a cylindrical and stationary lower chamber by applying a fixed force to the balls in the lower chamber by means of the upper chamber and rotating it in a certain number of turns at a constant speed.
- It can be provided with sieves and reference coke samples.