Ferro tungsten (75%)

Within 3 minutes, the complete sample of 1,6 kg of Ferro tungsten has been ground to particles, mainly < 6-8 mm. Only a few pieces use to be up to 1 cm long.

A grinding of higher amounts is still possible.

Also the usage of crushing jaws and lateral support walls made of hardmetal tungsten carbide are plausible if a contamination with iron should be avoided.

With ~ 250 g of pre ground sample (see result 1), it took 8 minutes of grinding at 1000 rpm, until all particles got ground to < 200 µm. Sample is not sticking, even longer dry grinding times are plausible to achieve a better fineness.

A higher speed setting with improve the grinding result rapidly. For a grinding of higher sample amounts, up to 250 ml grinding sets can be used.