QIT Blue Dust--Poussière bleue de QIT

QIT stands for Quebec Iron and Titanium,
it owns an ilmemite mine in northeastern Quebec.
The ore is shipped to Tracy, Quebec where it
is processed to titanium dioxide slags, iron pigs,
steel billets, and steel auto parts.
This dust comes from the reduction kilns in
which the ore is separated into titanium dioxide
slag and iron.
The general formula of QIT Blue Dust is as follows:

FEO 33%
SIO2 17%
AL2O3 7.0%
TIO2 33%
CAO 2.0%
MGO 7.0%
KNAO 1.0%
TOTAL 100%

It was 170 mesh sieved.

A theoritical substitution is as follows
for 1% of the stuff:

Red Iron Oxide 0.310
Silica 0.020
EPK 0.110
Rutile 0.290
Dolomite 0.050
Magnesium carbonate 0.110
Custer Spar 0.110
Total 1.000