Magnesium aluminum spinel-corundum-Sialon complex phase high-temperature resistant material and preparation method thereof
A magnesia-aluminum spinel and high-temperature-resistant technology, which is applied in the field of refractory materials, can solve the problems of secondary waste with low added value, and achieve the effect of excellent comprehensive performance and low cost
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[0021] Example 1
[0022] raw material:
[0023] Fly ash from a power plant in Shanxi, its chemical composition is (w): Al 2 O 3 40.37%, SiO 2 52.45%, Fe 2 O 3 2.36%, CaO 0.75%, MgO 0.54%, loss on ignition 1.56%, others 1.97%, the added amount accounts for 40% of the mass fraction of the total ingredients;
[0024] The chemical composition of aluminum dust from an aluminum factory in Shanghai is (w): Al 2 O 3 18.02%, AlN 14.13%, Al 28.62%, MgO7.1%, SiO 2 5.9%, Fe 2 O 3 4.0%, CaO 2.8%, Na 2 O 2.6%, TiO 2 1.6%, loss on ignition 12.8%, others 2.43%, adding 55% of the mass fraction of total ingredients;
[0025] The chemical composition of magnesite produced in Liaoning is (w): MgO 44.66%, Al 2 O 3 0.33%, SiO 2 1.35%, CaO1.52%, Fe 2 O 3 0.51%, the ignition loss is 50.40%, and the added amount accounts for 5% of the mass fraction of the total ingredients.
[0026] Raw material pretreatment:
[0027] The above-mentioned raw materials are respectively pulverized through a 200-mesh sie...
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[0035] Example 2
[0036] raw material:
[0037] Fly ash from a power plant in Beijing, its chemical composition (w): SiO 2 54.30%, Al 2 O 3 35.40%, Fe 2 O 3 1.50%, CaO 1.80%, MgO 0.70%, loss on ignition 4.30%, other 2.0%, the added amount accounts for 38% of the mass fraction of the total ingredients;
[0038] The chemical composition of aluminum ash from an aluminum factory in Hebei is (w): Al 2 O 3 21.05%, AlN 11.03%, Al 29.55%, MgO12.5%, SiO 2 5.0%, Fe 2 O 3 3.8%, CaO 3.4%, Na 2 O 1.6%, TiO 2 1.2%, loss on ignition 8.77%, other 2.10%, accounting for 52% of the mass fraction of the total ingredients;
[0039] The chemical composition of magnesite produced in Liaoning is (w): MgO 44.66%, Al 2 O 3 0.33%, SiO 2 1.35%, CaO1.52%, Fe 2 O 3 0.51%, the ignition loss is 50.40%, and the added amount accounts for 10% of the mass fraction of the total ingredients.
[0040] Raw material pretreatment:
[0041] The above-mentioned raw materials are respectively pulverized through a 200-mes...
Example Embodiment
[0049] Example 3
[0050] raw material:
[0051] Fly ash from a power plant in Shanxi, its chemical composition is (w): Al 2 O 3 40.37%, SiO 2 52.45%, Fe 2 O 3 2.36%, CaO 0.75%, MgO 0.54%, loss on ignition 1.56%, others 1.97%, the added amount accounts for 41% of the mass fraction of the total ingredients;
[0052] The chemical composition of aluminum ash from an aluminum factory in Hebei is (w): Al 2 O 3 21.05%, AlN 11.03%, Al 29.55%, MgO12.5%, SiO 2 5.0%, Fe 2 O 3 3.8%, CaO 3.4%, Na 2 O 1.6%, TiO 2 1.2%, loss on ignition 8.77%, other 2.10%, aluminum ash accounts for 59% of the mass fraction of the total ingredients.
[0053] The chemical composition of magnesite produced in Liaoning is (w): MgO 44.66%, Al 2 O 3 0.33%, SiO 2 1.35%, CaO1.52%, Fe 2 O 3 0.51%, the ignition loss is 50.40%, and the added amount accounts for 5% of the mass fraction of the total ingredients.
[0054] Raw material pretreatment:
[0055] The above-mentioned raw materials are respectively pulverized thro...
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