Heat accumulation and energy storage graphite material for solar thermal power generation and preparation method thereof
A technology of graphite materials and heat storage materials, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor heat storage capacity, non-durable cost, low working temperature, etc., and achieve long service life and good mechanical properties , the effect of small elastic modulus
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Embodiment 1
[0053] The calcined petroleum coke and needle coke are mixed according to the mass ratio (9:1), and the mixture is crushed and sieved to make three grades of pellets: 0.8-0.335mm, 0.335-0.075mm and less than 0.075mm , respectively placed in three material bins; among them: the mass percentage content of the mixture of 0.335
[0054] Put the above mixture into the kneading pot for dry mixing, the temperature of the kneading pot is 165°C, stir at 39.6 rpm for 30 minutes, and the temperature of the dry material is 135°C.
[0055] After the dry mixing is completed, add modified asphalt into the kneading pot, the mass percentage of dry material and modified asphalt is 75:25, wherein the modified asphalt is added in two times, and the first addition is 60% of the total modified asphalt. %, kneading with...
Embodiment 2
[0062] Proportion calcined petroleum coke and needle coke according to the mass percentage (17:3), and the mixture is crushed and sieved to make three grades of pellets: 0.8-0.335mm, 0.335-0.075mm and less than 0.075mm , respectively placed in three material bins; among them: the mass percentage content of the mixture of 0.335
[0063] Put the above-mentioned mixture into the kneading pot for dry mixing, the temperature of the kneading pot is 170°C, stir at 39.6 rpm for 40 minutes, and the temperature of the dry material is 135°C.
[0064] After the dry mixing is completed, add modified asphalt into the kneading pot, the mass percentage of dry material and modified asphalt is 80:20, wherein the modified asphalt is added in two times, and the first addition is 55% of the total modified asphalt. ...
Embodiment 3
[0071] The calcined petroleum coke and needle coke are mixed according to the mass ratio (88:12), and the mixture is crushed and sieved to make three grades of pellets: 0.8-0.335mm, 0.335-0.075mm and 0.075-0mm , respectively placed in three material bins; among them: the mass percentage content of the mixture of 0.335
[0072] Put the above mixture into the kneading pot for dry mixing, the temperature of the kneading pot is 175°C, stir at 39.6 rpm for 40 minutes, and the temperature of the dry material is controlled between 125°C.
[0073] After the dry mixing is completed, add modified asphalt into the kneading pot, the mass ratio of dry material and modified asphalt is 8:1, wherein the modified asphalt is added in two times, and the first addition is 45% of the total modified asphalt. %, knea...
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