Fly ash treatment method
A fly ash and carbon treatment technology, applied in the chemical industry, can solve the problems of encroaching on cultivated land, the impact of sustainable development, the threat of surrounding air quality, etc., and achieve high compressive strength and porosity, significant economic and environmental benefits. Effect
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Embodiment 1
[0045] Follow the steps below to make foam bricks using fly ash:
[0046] (1) Decarbonizing fly ash, mainly removing large-size unburned carbon particles in fly ash, and the carbon content in fly ash after decarbonizing is not higher than 0.2%.
[0047] (2) The decarbonized fly ash and the desulfurized gypsum are mixed according to a mass ratio of 97:3 to obtain a mixture.
[0048] The mass percentage of the main components in fly ash after carbon removal is CaO 5%, SiO 2 50%, Al 2 O 3 40%, Fe 2 O 3 2%, MgO 0.5%, alkali metal oxide 0.5%, C 2%.
[0049] Desulfurized gypsum is a dried substance, the moisture content is not higher than 0.5%, CaSO 4 ·2H 2 O mass percentage is not less than 90%.
[0050] (3) The mixture is transported into a ball mill for ball milling treatment, and the content of powder with a particle size of not greater than 45 μm in the powder obtained by ball milling is 96%.
[0051] (4) Mix the powder material and the alkali excitation liquid uniformly and place them...
Embodiment 2
[0056] Follow the steps below to prepare foam bricks from fly ash:
[0057] (1) Decarbonizing fly ash, mainly removing large-size unburned carbon particles in fly ash, and the carbon content in fly ash after decarbonizing is not higher than 0.2%.
[0058] (2) The decarbonized fly ash and the desulfurized gypsum are mixed according to a mass ratio of 95:5 to obtain a mixture.
[0059] The mass percentage of main components in fly ash after carbon removal is CaO 3%, SiO 2 55%, Al 2 O 3 30%, Fe 2 O 3 4%, MgO 1%, alkali metal oxide 1%, C 2%.
[0060] Desulfurization gypsum is a dried substance, the moisture content is not higher than 0.5%, CaSO 4 ·2H 2 O mass percentage is not less than 90%.
[0061] (3) The mixed material is transported into a ball mill for ball milling treatment, and the content of powder with a particle size not greater than 45 μm in the powder obtained by ball milling is 90%.
[0062] (4) Mix the powder material and the alkali excitation liquid uniformly and place the...
Embodiment 3
[0067] Follow the steps below to prepare foam bricks from fly ash:
[0068] (1) Decarbonizing fly ash, mainly removing large-size unburned carbon particles in fly ash, and the carbon content in fly ash after decarbonizing is not higher than 0.2%.
[0069] (2) The decarbonized fly ash and the desulfurized gypsum are mixed in a mass ratio of 96:4 to obtain a mixture.
[0070] The mass percentage of main components in fly ash after carbon removal is CaO 4%, SiO 2 53%, Al 2 O 3 35%, Fe 2 O 3 3%, MgO 1%, alkali metal oxide 1%, C 2%.
[0071] Desulfurized gypsum is a dried substance, the moisture content is not higher than 0.5%, CaSO 4 ·2H 2 O mass percentage is not less than 90%.
[0072] (3) The mixture is transported into a ball mill for ball milling treatment, and the content of powder with a particle size of not more than 45 μm in the powder obtained by ball milling is 94%.
[0073] (4) Mix the powder material and the alkali excitation liquid uniformly and place them in a mixer for alk...
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