Blockage adjusting agent of coated rice husk powder and its preparation and application
A technology of plugging agent and rice husk powder, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of large pores or channeling channels, etc., and achieve safe production process, simple construction process and low cost. cheap effect
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Embodiment 1
[0036] The preparation method of Type I coated particles is:
[0037] (1) Preparation of dispersant: Weigh 0.8 kg of tap water, 0.2 kg of polyethylene glycol, and 0.1 kg of dodecyltrimethylammonium bromide, respectively, add polyethylene glycol and cationic surfactant into the water, and stir evenly.
[0038] (2) Mixing: Weigh 0.5 kg of No. 110 petroleum asphalt and 1 kg of rice husk, and add them to an internal mixer for mixing for 10 minutes. The heating temperature was 120°C. During the mixing process, intermittently spray 0.01 kg of dispersant to prevent sticking.
[0039] (3) Freezing: After the kneading is completed, move the mixture into a freezer to cool down and freeze at a temperature of -10 to 0°C, and take it out after freezing for 4 hours.
[0040] (4) Granulation: Put the above frozen mixture into a single-screw extruder for granulation.
[0041] (5) Sieving: Use a 5mm standard sieve to sieve out particles > 5mm, and then re-granulate to finally obtain a parti...
Embodiment 2
[0046] The preparation method of Type II coated particles is:
[0047] (1) Preparation of dispersant: Take 0.8kg of tap water, 0.2kg of polyethylene glycol, and 0.1kg of cetyltrimethylammonium bromide respectively, add polyethylene glycol and cationic surfactant into the water, stir evenly Can.
[0048] (2) Mixing: Weigh 0.8 kg of No. 70 petroleum asphalt and 1 kg of rice husk, and put them into an internal mixer for mixing for 10 minutes. The heating temperature was 160°C. During the mixing process, 0.015 kg of dispersant was sprayed intermittently to prevent sticking.
[0049] (3) Freezing: After the kneading is completed, move the mixture into a freezer to cool down and freeze at a temperature of -10 to 0°C, and take it out after freezing for 6 hours.
[0050] (4) Granulation: Put the above frozen mixture into a single-screw extruder for granulation.
[0051] (5) Sieving: Use a 5mm standard sieve to sieve out particles > 5mm, and then re-granulate to finally obtain a pa...
Embodiment 3
[0056] The preparation method of Type III coated particles is:
[0057] (1) Preparation of dispersant: Take 0.8kg of tap water, 0.2kg of polyethylene glycol, and 0.1kg of cetyltrimethylammonium bromide respectively, add polyethylene glycol and cationic surfactant into the water, stir evenly Can.
[0058] (2) Mixing: Weigh 0.5 kg of No. 30 petroleum asphalt and 0.5 kg of rice husk, and add them to an internal mixer for mixing for 10 minutes. The heating temperature was 180°C. During the mixing process, intermittently spray 0.01 kg of dispersant to prevent sticking.
[0059] (3) Freezing: After the kneading is completed, move the mixture into a freezer to cool down and freeze at a temperature of -10 to 0°C, and take it out after freezing for 6 hours.
[0060] (4) Granulation: Put the above frozen mixture into a single-screw extruder for granulation.
[0061] (5) Sieving: Use a 5mm standard sieve to sieve out particles > 5mm, and then re-granulate to finally obtain a particle...
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