What is loss, ore loss rate, and how is it calculated?

In the mining process, losses in the stope mining and non-mining the lower non-operation of the industrial minerals or metal content called loss. Losses are classified into mining losses and non-mining losses.

Mining losses refer to ore losses associated with the quality of mining methods, mining and ore mining operations during the mining process. It includes the ore loss of the unrecovered and unrecoverable residual ore and various pillars within the mining area; the ore loss that has been lost but failed to be released or shipped out of the stop.

Non-mining losses refer to ore losses that are not related to mining methods and mining conditions, mainly including loss of ore that cannot be mined due to geological, hydrological conditions, mining technical conditions, safety conditions, or permanent security due to protection of surface and underground works. Loss of pillars.

The size of the ore loss is expressed by the loss rate, and the recovery rate corresponds to the recovery rate, and the sum of the two is 100%.

The difference between the industrial reserve Q of the designed mining area and the amount of ore Q' obtained after mining is called the loss or loss of the ore. The percentage of loss and industrial reserves is called the loss rate.

q=[(Q-Q')/Q]×100%

If Q' represents the amount of net ore obtained after mining, q is called the actual loss rate; if Q' represents the amount of ore including the mixed waste rock, then q is called the apparent loss rate.