Composite cement and preparation method thereof
A composite cement and water treatment technology, applied in cement production and other directions, can solve problems such as reducing the liquid phase formation temperature, increasing the scorchability and impact of raw meal, and improving the flexural strength, early strength, and promotion of hydration hardening. Effect
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Example Embodiment
[0010] Example 1
[0011] The configuration of this embodiment is as follows:
[0012]
[0013] Among them: gypsum is composed of desulfurized gypsum and anhydrite in a mass ratio of 1:1; activated sludge is water treatment sludge, calcium carbide slag and slag according to CaO / (Al 2 O 3 +SiO 2 ) at a molar ratio of 0.83 and water at a mass ratio of 1:0.5 to obtain it by autoclaving at 180°C for 8 hours and calcining at 750°C for 8 hours.
Example Embodiment
[0014] Embodiment 2
[0015]
[0016] Among them: gypsum is composed of desulfurized gypsum and anhydrite in a mass ratio of 1:1; activated sludge is water treatment sludge, calcium carbide slag and slag according to CaO / (Al 2 O 3 +SiO 2 ) at a molar ratio of 1 and water at a mass ratio of 1:0.5 to obtain it by autoclaving at 185°C for 7 hours, and then calcined at 780°C for 9 hours.
Example Embodiment
[0017] Embodiment 3
[0018] The configuration of this embodiment is as follows:
[0019]
[0020] Among them: gypsum is composed of desulfurized gypsum and anhydrite in a mass ratio of 1:1; activated sludge is water treatment sludge, calcium carbide slag and slag according to CaO / (Al 2 O 3 +SiO 2 ) was mixed with water at a molar ratio of 0.9 at a mass ratio of 1:0.5, autoclaved at 190°C for 7 hours, and then calcined at 750°C for 10 hours.
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