Enameled pipe for air preheater
A technology of enamel pipe and inner pipe wall, applied in the field of enamel pipe, can solve problems such as weak corrosion resistance, and achieve the effect of improving corrosion resistance, wear resistance and corrosion resistance.
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Embodiment 1
[0042] Two identical enamel specimens numbered 3 to 4, with a thickness of Φ100mm and a surface area of 0.00785m 2 , including the underglaze layer and the surface layer.
[0043] Each component is by weight, the base glaze layer comprises 80% of the first coarse silica, 20% of the first binder comprising kaolin, the mass fraction of silicon dioxide in the first coarse silica 96%.
[0044] The top coat comprises 93% of a second coarse silica, 5% of a second binder comprising kaolin. The mass fraction of silicon dioxide in the second coarse silicon dioxide is 96%.
[0045] The top coat also contained 1% lithium carbonate, and 1% cobalt oxide.
[0046] Clean and dry the above-mentioned enamel piece specimens numbered 3 to 4, weigh them, then place them in the sulfuric acid test device, add 30% sulfuric acid, heat to boiling, keep the solution in a slightly boiling state, start timing, and after 18 hours Take it out, wipe off the water, re-weigh after drying to determine th...
Embodiment 2
[0049] Two identical enamel specimens numbered 5 to 6, with a thickness of Φ100mm and a surface area of 0.00785m 2 , including the underglaze layer and the surface layer.
[0050] Each component is by weight, the base glaze layer comprises 80% of the first coarse silica, 20% of the first binder comprising kaolin, the mass fraction of silicon dioxide in the first coarse silica 96%.
[0051] The top coat comprises 91% of a second coarse silica, 5% of a second binder comprising kaolin. The mass fraction of silicon dioxide in the second coarse silicon dioxide is 96%.
[0052] The top coat also contained 2% lithium carbonate, and 2% cobalt oxide.
[0053]Clean and dry the above-mentioned enamel piece test pieces numbered 5-6, weigh them, then place them in the sulfuric acid test device, add 30% sulfuric acid, heat to boiling, keep the solution in a slightly boiling state, start timing, and after 18 hours Take it out, wipe off the water, re-weigh after drying to determine the ...
Embodiment 3
[0055] Two identical enamel specimens numbered 7~8, with a thickness of Φ100mm and a surface area of 0.00785m 2 , including the underglaze layer and the surface layer.
[0056] Each component is by weight, the bottom glaze layer comprises 80% of the first coarse silica, 20% of the first binder comprising kaolin, the mass fraction of silicon dioxide in the first coarse silica 96%.
[0057] The top coat comprises 89% of a second coarse silica, 5% of a second binder comprising kaolin. The mass fraction of silicon dioxide in the second coarse silicon dioxide is 96%.
[0058] The top coat also contained 3% lithium carbonate, and 3% cobalt oxide.
[0059] Clean and dry the above-mentioned enamel piece test pieces numbered 7-8, weigh them, then place them in the sulfuric acid test device, add 30% sulfuric acid, heat to boiling, keep the solution in a slightly boiling state, start timing, and after 18 hours Take it out, wipe off the water, re-weigh after drying to determine the ...
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Abstract
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