Modification of ultramicro cracked carbon black for rubber and preparation method of composite rubber
A technology of compounding rubber and pyrolysis carbon is applied in the field of rubber reinforcing filler, which can solve the problems of affecting rubber dispersion and easy agglomeration, and achieve the effect of increasing the number of parts used, low hardness and reducing dust pollution.
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Embodiment 1
[0070] The recovered waste all-steel thermal cracking coke slag is removed by a vibrating screen to remove large impurities, and then sent to the buffer bin for use after passing through the iron removal equipment. The iron-removed slag goes through the vertical mill and then goes into the coarse powder storage silo. The frequency of the vertical mill is 25Hz. The crushed slag is finely pulverized by a stirring mill to obtain ultrafine cracked carbon black, and the frequency of the stirring mill is 45 Hz. The particle size D97 detected by the laser particle size analyzer is 15.8um, and it is transported to the buffer silo. Then, transport 500 kg of ultrafine cracked carbon black into the mixing and modifying machine, the mixing speed of the mixing and modifying machine is 1000r / min, add 270 kg of 25 ℃ process water from the spray pipe, and the flow rate of the spray water is 30kg / min, to obtain a wet material of ultrafine cracked carbon black with a humidity of 35%, and keep...
Embodiment 2
[0075] The recovered waste semi-steel thermal cracking coke slag is removed by a vibrating screen to remove large impurities, and then sent to a buffer bin for standby after passing through the iron removal equipment. The iron-removed slag goes through the jaw crusher before iron removal and enters the coarse powder storage silo. The frequency of the jaw crusher is 35Hz. The crushed slag is finely pulverized by an impact mill to obtain ultrafine cracked carbon black, and the frequency of the impact mill is 40 Hz. The particle size D97 detected by the laser particle size analyzer is 12.6um, and it is transported to the buffer silo. Then, transport 500 kilograms of ultrafine cracked carbon black into the mixing and modifying machine, the stirring speed of the mixing and modifying machine is 1500 r / min, and 290 kilograms of 35 ℃ process water is added to the spray pipe, and the spray flow rate is 20 kg / min, The ultrafine cracked carbon black wet material with a humidity of 37% w...
Embodiment 3
[0080] The recovered waste all-steel and semi-steel thermal cracking coke slag is removed by a vibrating screen to remove large impurities, and then sent to a buffer silo for standby after passing through the iron removal equipment. The iron-removed slag goes through the dry ball mill and then enters the coarse powder storage bin for iron removal. The frequency of the dry ball mill is 30Hz. The crushed slag is finely pulverized by an impact mill to obtain ultrafine cracked carbon black, and the frequency of the impact mill is 45 Hz. The particle size D97 detected by the laser particle size analyzer is 10.8um, and it is transported to the buffer silo. Then, transport 500 kg of ultrafine cracked carbon black (the weight ratio of semi-steel to full steel is 2:8) into the mixing and modifying machine, the stirring speed of the mixing and modifying machine is 800 r / min, and the spray pipe adds 300 kg 45 ℃ of process water, spray flow rate of 30kg / min, to obtain ultrafine cracked c...
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