A kind of preparation method of blast furnace slag-based composite material
A composite material and blast furnace slag technology, which is applied in the field of industrial waste slag recycling and reuse, can solve the problems of high development and utilization cost, low blast furnace slag recycling efficiency, etc., and achieve the effects of efficient preparation, reduction of reaction time and uniform crystal phase.
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Embodiment 1
[0034] The blast furnace slag was collected from an iron and steel company in Jiangsu, and its main component content is: SiO 2 29.13%, CaO47.08%, Al 2 O 3 20.59%, MgO 1.11%. The preparation steps of blast furnace slag-based hydroxyapatite-zeolite composite material are as follows:
[0035] (1) uniformly mixing blast furnace slag and sodium hydroxide in a mass ratio of 1:1.3, and melting at 600° C. for 60 min to obtain a molten product;
[0036](2) control reaction system Ca / P mol ratio is under the condition of 10:6, and the molten product of (1) step gained is transferred in there-necked flask and adds 30mL 2.0mol / L disodium hydrogen phosphate solution, stirs homogeneously Then, continue to add 50 mL of 2.0 mol / L NaOH solution, stir vigorously for 1 h at 100 °C, and then crystallize for 6 h;
[0037] (3) After the crystallization is completed in step (2), the product is taken out and filtered, the filter cake is washed with water until neutral, and dried at 80° C. for 3...
Embodiment 2
[0039] The blast furnace slag is the same as in Example 1, and the preparation steps of the blast furnace slag-based hydroxyapatite-zeolite composite material are as follows:
[0040] (1) uniformly mixing blast furnace slag and sodium hydroxide particles in a mass ratio of 1:1.3, and melting at 550 ° C for 60 min to obtain a molten product;
[0041] (2) control reaction system Ca / P mol ratio is under the condition of 10:6, and the molten product of (1) step gained is transferred in there-necked flask and adds 30mL 2.0mol / L sodium dihydrogen phosphate solution, stirs homogeneously Then, continue to add 50 mL of 2.0 mol / L NaOH solution, stir vigorously for 2 h at 100 °C, and then crystallize for 8 h;
[0042] (3) After the crystallization is completed in step (2), the product is taken out for filtration, the filter cake is washed with water until neutral, and dried at 80° C. for 3 hours to obtain a blast furnace slag-based hydroxyapatite-zeolite composite material. The microsco...
Embodiment 3
[0044] The blast furnace slag is the same as in Example 1, and the preparation steps of the blast furnace slag-based hydroxyapatite-zeolite composite material are as follows:
[0045] (1) uniformly mixing blast furnace slag and sodium hydroxide particles in a mass ratio of 1:1.2, and melting at 500° C. for 120 min to obtain a molten product;
[0046] (2) control reaction system Ca / P mol ratio is under the condition of 10:6, and the molten product of (1) step gained is transferred in there-necked flask and adds 30mL 2.0mol / L sodium dihydrogen phosphate solution, stirs homogeneously Then, continue to add 50 mL of 2.0 mol / L NaOH solution, stir vigorously for 2 h at 100 °C, and then crystallize for 6 h;
[0047] (3) After the crystallization is completed in step (2), the product is taken out for filtration, the filter cake is washed with water until neutral, and dried at 80° C. for 3 hours to obtain a blast furnace slag-based hydroxyapatite-zeolite composite material. The microsc...
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