Method for co-processing waste incineration fly ash as admixture by cement kiln
A waste incineration fly ash and co-processing technology, applied in cement production, etc., can solve the problems of easy leaching of ions, high treatment cost, secondary pollution, etc., and achieve the effects of easy popularization and application, low energy consumption and low treatment cost
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Embodiment 1
[0044]This example is carried out on a Φ4×60m precalcined kiln-dried cement production line with a five-stage cyclone preheater in a certain enterprise. The stability of the normal production kiln condition is average, and the clinker strength fluctuates between 3d compressive strength 24.6-32.4MPa, 28d The compressive strength is 52.8-57.6MPa, the water demand for standard consistency fluctuates between 22.5-27.5%, the setting time fluctuates between initial setting 104-137min, final setting 139-168min, clinker chloride ion (Cl - ) content of 0.013%.
[0045] The waste incineration fly ash used in this example comes from a domestic waste incineration power plant stock waste incineration fly ash, and the elemental analysis of the waste incineration fly ash is: SiO 2 9.06%, Al 2 o 3 4.04%, Fe 2 o 3 1.50%, CaO 37.98%, MgO2.65%, Cl 11.96%, SO 3 4.80%, K 2 O 2.69%, Na 2 O 1.50%, C 4.33%, Zn 2.892%, Pb 1.578%, Mn607.4mg / kg, Cu 384.5mg / kg, Cr 306.4mg / kg, Ni 107.9mg / kg, As...
Embodiment 2
[0059] This example is carried out on a Φ4.2×64m precalcined kiln-dried cement production line with a five-stage cyclone preheater in an enterprise, and its normal production clinker strength fluctuates between 3d compressive strength 25.6-32.8MPa and 28d compressive strength 53.8 ~58.9MPa, the water demand of standard consistency fluctuates at 22~28%, the setting time fluctuates at initial setting 98~130min, final setting 135~168min, chloride ion (Cl - ) content of 0.017%.
[0060] The waste incineration fly ash used in this example comes from a domestic waste incineration power plant stock waste incineration fly ash, and the elemental analysis of the waste incineration fly ash is SiO 2 9.60%, Al 2 o 3 3.78%, Fe 2 o 3 1.72%, CaO 39.05%, MgO2.66%, Cl 17.81%, SO 3 5.79%, K 2 O 2.15%, Na 2 O 1.12%, C 4.01%, Zn 1.983%, Pb 1.793%, Mn614.8mg / kg, Cu 396.7mg / kg, Cr 314.8mg / kg, Ni 113.7mg / kg, As 171.7mg / kg, Sb196.4mg / kg kg, Ti 125.8 mg / kg, Cd 40.9 mg / kg, Ag 32.7 mg / kg, Hg 3...
Embodiment 3
[0074] This example is carried out on a Φ4.3×64.5m precalcined kiln-dried cement production line with a five-stage cyclone preheater in an enterprise. During normal production, the clinker strength fluctuates between 3d compressive strength 24.6-33.9MPa and 28d compressive strength The strength is 52.8-59.2MPa, the water demand for standard consistency fluctuates between 22.5-27.5%, the setting time fluctuates between initial setting 100-137min, final setting 133-165min, chloride ions (Cl - ) content of 0.009%.
[0075]The waste incineration fly ash used in this example comes from a domestic waste incineration power plant stock waste incineration fly ash, and the elemental analysis of the waste incineration fly ash is SiO 2 9.59%, Al 2 o 3 4.06%, Fe 2 o 3 1.48%, CaO 38.95%, MgO2.55%, Cl 19.24%, SO 3 4.84%, K 2 O 3.97%, Na 2 O 3.14%, C 4.52%, Zn 3.122%, Pb 1.678%, Mn624.8mg / kg, Cu 387.6mg / kg, Cr 342.8mg / kg, Ni 121.7mg / kg, As 161.7mg / kg, Sb189.4mg / kg kg, Ti 142.6mg / k...
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