Part II... I should have included this in my question to give context. 
As Saudi Arabia looks to diversify their economy with aluminum and phosphate industry, I am curious to know how far behind that fence you are as many of these companies have a large state ownership. 

Here is the why in which I ask this question.

https://www.tomra.com/en/sorting/mining/case-studies/waad-al-shamal

Is there a use for this byproduct silica that could be processed in the QRR? Where these locations are far out in the desert, is power generation a significant issue should there be a use for this byproduct?

"Another challenge is the desert location. In this isolated region, the heat is intense and rainfall scarce. And yet, despite the lack of a natural water supply, the phosphate ore must be cleansed of contaminants. The run-of-mine material at Wa’ad Al Shamal contains significant amounts of unwanted silica (also known as flintstone, chert, or SiO₂) which must be removed before the phosphates are fed downstream for refinement. To solve this problem, the designers of the processing plant consulted TOMRA. Experience elsewhere had shown that TOMRA’s sorting machines have the ability to identify and eject unwanted silica from feed materials, as well as greatly reducing the consumption of water and electricity in the downstream production processes."

and further down within that article...

"These unused materials are accumulating in piles so massive that some are visible from space. This is needless waste. Phosphates worth many millions of dollars are sitting in these piles, and sensor-based sorting technologies could turn this waste to cash. In a world of finite resources, where dependence on fertilizers is more and more widespread, sorting technologies can deliver increasingly important environmental and commercial benefits."