Method for synergistically preparing baking-free steaming-free cured bricks from squeezed fine silt and lithium slag obtained after lepidolite beneficiation based on carbon curing
A technology of lepidolite and lithium slag, which is applied in the direction of ceramic products, solid waste management, sustainable waste treatment, etc., can solve the problems of heavy pollution, restricting local economic development, and high alkalinity, so as to reduce production costs and solve surface flooding. Effect of alkali, strength improvement
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Embodiment 1
[0020] S10. Take 75 parts by weight of lithium slag (fineness modulus is 1.64), 25 parts of curing agent, and 12 parts of water; the mass proportions of cement, fly ash and activator in the curing agent are 57:28:15 respectively ; The activator only uses water glass (due to the high sulfate content of lithium slag).
[0021] S20. Stir the dry material in a mixer for 2 minutes, then add water and stir for 0.5 minutes, then add an activator and stir for 2.5 minutes to obtain a brick-making material.
[0022] S30. Put the material into a 240*115*53mm mold and load it to 65MPa at a loading speed of 2kN / s and keep it for 30s. After demoulding, seal and maintain the non-burning and non-steaming bricks, and then move them to a dry place for stacking after three days live.
[0023] S40. After testing, the compressive strengths of the lepidolite by-product slag solidified non-burning and non-steaming bricks prepared in this example were 21.2 MPa, 33.3 MPa and 49.4 MPa for 3 days, 7 da...
Embodiment 2
[0025] S10. Take 50 parts by weight of lithium slag (fineness modulus is 1.64), squeeze 25 parts of fine powder (specific surface area is 650m 2 / kg), 25 parts of curing agent, and 12 parts of water; the mass proportions of cement, fly ash and activator in the curing agent were 57:28:15; the activator only used water glass (due to the relatively high sulfate content of lithium slag high).
[0026] S20. Stir the dry material in a mixer for 2 minutes, then add water and stir for 0.5 minutes, then add an activator and stir for 2.5 minutes to obtain a brick-making material.
[0027] S30. Put the material into a 240*115*53mm mold and load it to 60MPa at a loading speed of 2kN / s and keep it for 30s. After demoulding, seal and maintain the non-burning and non-steaming bricks, and then move them to a dry place for stacking after three days live.
[0028] S40. After testing, the compressive strengths of the lepidolite by-product slag solidified non-burning and non-steaming bricks pre...
Embodiment 3
[0034] S10. Take 45 parts by weight of lithium slag (fineness modulus is 1.64), press 45 parts of fine powder (specific surface area is 650m 2 / kg), 10 parts of curing agent, and 14 parts of water; the mass proportions of cement, fly ash and activator in the curing agent are 31:10:9 respectively; the activator only uses water glass (due to the relatively high sulfate content of lithium slag high).
[0035] S20. Stir the dry material in a mixer for 2 minutes, then add water and stir for 0.5 minutes, then add an activator and stir for 2.5 minutes to obtain a brick-making material.
[0036] S30. Load the material into a mold of 240*115*53mm and load it to 60MPa at a loading speed of 2kN / s and hold it for 30s. After demolding, seal and maintain the non-burning and non-steaming brick.
[0037] S40. After testing, the compressive strengths of the lepidolite by-product slag solidified non-burning and non-steaming bricks prepared in this example were 12.9 MPa, 16.3 MPa and 23.2 MPa f...
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