Preparation method of calcium hydroxide with high specific surface area for dry desulfurization
A technology of high specific surface area and calcium hydroxide is applied in the field of preparation of calcium hydroxide to achieve the effect of reducing production costs
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Embodiment 1
[0034] The content of calcium oxide in the limestone is 54%, the particle size of the quick lime entering the digester is 3 mm, the ratio of quick lime and water: 1: 0.47, the water temperature of the digested water is room temperature (about 25 ° C), the rotating speed of the classifier is 800 rpm, and the obtained calcium hydroxide passes through. 250 mesh standard sieve is 95%, specific surface area is 12.06m 2 / g.
Embodiment 2
[0036] The calcium oxide content in the limestone is 54%, the particle size of the quicklime entering the digester is 3mm, the ratio of quicklime to water (the digested water contains 2% of an organic amine and 1% of sodium carbonate): 1:0.47, and the water temperature of the digested water is room temperature (about 25%). ℃), the rotating speed of the classifier is 800 rev / min, the obtained calcium hydroxide is 95% through the 250-mesh standard sieve, and the specific surface area is 21.81m 2 / g.
Embodiment 3
[0038] The calcium oxide content in the limestone is 54%, the particle size of the quicklime entering the digester is 3mm, the ratio of quicklime and water (the digested water contains a trivalent alcohol 2%, and the sodium carbonate 1%): 1:0.47, and the water temperature of the digested water is room temperature (about 25°C), the rotating speed of the classifier is 800 rpm, the obtained calcium hydroxide is 95% through a 250-mesh standard sieve, and the specific surface area is 18.99.81m 2 / g.
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