Ceramsite petroleum fracturing propping agent and preparation method thereof

[0022] Example 1

[0023] Take the kaolin into a pulverizer and pulverize, pass a 100-mesh sieve, place the sieved kaolin powder in a muffle furnace, heat it to 800°C, heat it for 1 hour, and obtain pretreated kaolin. Take 60g pretreated kaolin, 1g Manganese oxide, 1g dolomite, 4g anorthite, 1g vanadium pentoxide, pulverize in a pulverizer, pass through a 200-mesh sieve, add the sieved powder to a planetary ball mill, and use anhydrous ethanol as the ball milling medium for ball milling for 10 hours , Take out the slurry and place it in a drying box, dry to constant weight at 105°C to obtain composite powder, take 1g polyvinyl alcohol into 10mL deionized water, heat to 90°C, stir at 300r / min for 30min, and then add 5g of urea, continue to stir for 20 minutes and then drip into the composite powder at 1mL / min to mix evenly, then transfer to the granulator to granulate, sieve out particles with a particle size of 0.8mm to obtain spherical pellets, and place the pellets Dry it in

[0024] Example 2

[0025] Take the kaolin into a pulverizer and pulverize, pass a 100-mesh sieve, place the sieved kaolin powder in a muffle furnace, heat it to 850°C, heat it for 1 hour, and obtain pretreated kaolin. Take 65g pretreated kaolin, 3g Manganese oxide, 1g dolomite, 6g anorthite, 1g vanadium pentoxide, pulverized in a pulverizer, sieved through a 200-mesh sieve, the sieved powder is added to the planetary ball mill, and anhydrous ethanol is used as the ball milling medium for ball milling for 11 hours , Take out the slurry and place it in a drying box, dry to constant weight at 108℃, to obtain composite powder, take 1g polyvinyl alcohol into 15mL deionized water, heat to 92℃, stir at 350r / min for 35min, and then add 8g of urea, continue to stir for 25 minutes, and then drip into the composite powder at 1mL / min to mix evenly, then transfer to the granulator to granulate, sieve out the particles with a particle size of 0.9mm to obtain spherical pellets, and place the p

[0026] Example 3

[0027] Take the kaolin into a pulverizer and pulverize, pass a 100-mesh sieve, and place the sieved kaolin powder in a muffle furnace, heat it to 900°C, heat it for 2 hours, and obtain pretreated kaolin. Take 70g pretreated kaolin, 5g 2 Manganese oxide, 2g dolomite, 8g anorthite, 2g vanadium pentoxide, pulverize in a pulverizer, pass a 200-mesh sieve, add the sieved powder to a planetary ball mill, and use anhydrous ethanol as a ball milling medium to mill for 12 hours , Take out the slurry and place it in a drying box, dry to constant weight at 110°C to obtain composite powder, take 2g polyvinyl alcohol into 20mL deionized water, heat to 95°C, stir at 400r / min for 40min, and then add 10g of urea, continue to stir for 30 minutes and then drip into the composite powder at 2mL / min to mix evenly, then transfer to the granulator to granulate, sieve out the particles with a particle size of 1.0mm to obtain spherical pellets, and place the spherical pellets Dry it