Waterborne IOZ alkali silicates: Silicate film formers have been known for over a century and metallic zinc as an anticorrosive pigment for about 150 years.
IOZ silicates have become the first choice for HD corrosion protection of prepared steel.
The main advantages with waterborne IOZ silicates are of course that they have zero VOCs and therefore contain no health hazardous of flammable solvents.
There are successful application and use of waterborne IOZ silicates with more than 10 years protection on oil rigs in the Gulf of Mexico and in the Bass Strait of the coast of Australia, up to 40 years of protection to date on structural steelwork, railway bridges and road bridges in Australia, more than 20 years protection on oil refinery in Japan and even the Statue of Liberty in New York is internally coated.
1 x 40[micro]m WB IOZ silicate primer + 2 x 8 [micro]m WB liquid epoxy intermediate + 1 x 50[micro]m WB acrylic topcoat.
1 x 50[micro]m WB IOZ silicate primer + 1 x 200[micro]m WB HB solid epoxy intermediate + 1 x 50[micro]m WB acrylic topcoat.
In 1990, a waterborne high-build high ratio IOZ silicate primer was approved for maintenance on offshore and gas platforms for ESSO in the Bass Strait between South Australia and Tasmania.
The suitability of waterborne acrylic, epoxy and IOZ silicate coatings for HD corrosion protection has been discussed with emphasis on advantages and limitations.
A benefit to both the GBT, IOZ, DOZ mines will be a connection of the 2900 m and 3500 m levels by dual 7,000-m long, 4 X 4-m ramps with 15% grades.
The IOZ and DOZ (beneath the GBT) deposits are open to the east, west, and a depth.