We have considered earlier in detail how to calculate the bulk weight of new grinding media and grinding media loaded into the mill. For many years experience of industrial tests conduction, Energosteel Company specialists noted, not all enterprises have the ability for correctly and quickly measure the grinding balls bulk weight. Let us remind you in order to measure the bulk weigh of grinding balls uses container with regular geometric shape (cube) and volume no less than 1.0 cubic meter. Therefore, the Energosteel Company management decided equip production with two containers meet the specified requirements. This will allow to providing all necessary measurements with minimal error and a time spent minimum and give the results to our customers.
Both containers (tubs) have the correct geometric shape – a parallelepiped with sides 118х118х110cm. The each container volume is 1.53 cubic meters. We would to remind, the calculations results will be more accurate if measuring container has a larger volume. Taking into account the crane scales technical parameters; Energosteel Company specialists decided the 1.53 cubic meters is the optimal container volume for the grinding balls bulk weight determination with the minimum error. Crane scales should annually check.
Energosteel Company employees measured the bulk weight of 80mm and 100mm steel grinding balls with the 4th hardness group on August 25, 2017. The measurements and calculations results have shown in the tables below.
Table 1. The 80mm grinding balls bulk weight.
| Parameter | Container №1 | Container №2 | Average value |
| Container volume, m3 | 1,531 | 1,531 | |
| Grinding media volume in container, m3 | 1,420 | 1,428 | |
| The container and grinding media weight (gross), t | 7,425 | 7,350 | |
| The container weigh, t | 0,950 | 0,880 | |
| The grinding media weight, t | 6,475 | 6,470 | |
| The bulk weight, t/m3 | 4,560 | 4,531 | 4,546 |
Table 2. The 100mm grinding balls bulk weight.
| Parameter | Container №1 | Container №2 | Average value |
| Container volume, m3 | 1,531 | 1,531 | |
| Grinding media volume in container, m3 | 1,253 | 1,183 | |
| The container and grinding media weight (gross), t | 6,650 | 6,245 | |
| The container weigh, t | 0,950 | 0,880 | |
| The grinding media weight, t | 5,700 | 5,365 | |
| The bulk weight, t/m3 | 4,549 | 4,535 | 4,542 |
The 80mm grinding ball bulk weight is 4.60 t/m3, the 100 mm grinding ball bulk weight – 4.54 t/m3 indicate in reference specialized literature.
Thus, Energosteel Company can quickly and accurately measure the bulk weight of steel grinding balls own production during the tests and the obtained results provide to customers.
