## Blending method

The product I´d like to discuss is a blend of 2 materials (A and B).

We have been blending like this:

The material A comes from one conveyor belt and correponds to 60% of the blending. And the material B(40%) comes from one pile that is reclaimed by bucket wheel reclaimer. The material B is discharged above material A conveyor belt flow. These operations are simultaneous and the two flow rate is always keep under control. the blending (A+B) goes to stackers and two piles are made in modified windrow method. The reclamation of these two piles is caried out simultaneuosly by tho bucket weel reclaimers

The problem is: this kind of blending reduce the operation capacity, so we need to change the way of blending. There are two ways:

proposal 1. One pile is stacked 100% at the method mentioned above. And the other pile would be stacked also 100% at modified windrow method, but the 2 materials alternately. I.e. first the are made 3 rows with material A, and covered these rows with material B. So, above these 3 rows, we stack 2 rows of material A and cover with material B. At the same proportion (60/40) mentioned. Later the two pile would be reclaimed simultaneously.

proposal 2. Its a mix of the 2 methods above (current and proposal 1) at the same pile, i.e. we could stack material A and B simultaneouly in one row (current) and at other we could stack the two material alternately(proposal 1). So, the 2 piles would be reclaimed simultaneouly.

Of course each row on each has the same proportion(60/40), but the question is:

the proposal 2 gives more flexibility to operations, but I´d like to know if there will be implications at the sampling during the reclamation , pile homogenization, etc, if we use the proposal 2 instead of proposal 1 ???

thanks, Carte