A kind of microwave sintering method of clay ceramsite
A technology of microwave sintering and ceramsite, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of impractical application, low strength of dregs, and inability to produce and utilize dregs waste, etc., to achieve Significant economic and social benefits, solve the effect of long sintering time and low density
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Embodiment 1
[0025] A microwave sintering method for clay ceramsite, comprising the following steps:
[0026] S1. Add 40 parts of slag and 80 parts of fly ash to the stirring tank and stir evenly, then add 6 parts of low-density reinforcing agent and stir evenly, add 2 parts of cement, add 5 parts of water under stirring, and continue to stir 2 min to obtain a mixture.
[0027] The low-density reinforcing agent is prepared by the following process: calcining bauxite at a temperature of 400 ° C for 20 minutes, crushing by Raymond mill and passing through a 500-mesh sieve, adding nano-sepiolite and mixing evenly, the quality of bauxite and nano-sepiolite The ratio is 5:1, pass through a 500-mesh sieve; add the obtained material into a pelletizing machine, spray water vapor during the adding process, pass through a 80-100-mesh sieve to obtain pellets, add it to a dryer for drying, and send it to calcination In the furnace, calcined at 400 °C for 5 h to obtain a low-density reinforcing agent;...
Embodiment 2
[0032] A microwave sintering method for clay ceramsite, comprising the following steps:
[0033] S1. Add 60 parts of slag and 120 parts of fly ash to the stirring tank and stir evenly, then add 12 parts of low-density reinforcing agent and stir evenly, add 5 parts of cement, add 10 parts of water under stirring, and continue to stir 10min to obtain a mixture.
[0034] The low-density reinforcing agent is prepared by the following process: calcining bauxite at a temperature of 500 ° C for 40 minutes, crushing by Raymond mill and passing through a 500-mesh sieve, adding nano-sepiolite and mixing evenly, the quality of bauxite and nano-sepiolite The ratio is 10:1, and it passes through a 500-mesh sieve; the obtained material is added to a pelletizing machine, sprayed with water vapor during the adding process, and passed through a 80-100-mesh sieve to obtain pellets, which are added to a dryer for drying and sent to calcination. In a furnace, calcined at 500 °C for 10 h to obtai...
Embodiment 3
[0039] A microwave sintering method for clay ceramsite, comprising the following steps:
[0040] S1, by weight, add 50 parts of clay slag (from Hefei Metro Line 4 project slag), 100 parts of fly ash (from Hefei power plant boiler combustion waste) into the stirring kettle and stir evenly, add 3 parts of ordinary Portland cement, add 6 parts of water under stirring, and continue to stir for 5 minutes to obtain a mixture;
[0041] S2, put the mixture into a ball-forming tray to form a ball, the ball-forming time is 10min, take it out and put it in a drying oven for drying for 24h, add the product to the microwave reactor for microwave treatment for 8min, the microwave power is 4000W, and cooling to obtain Clay ceramsite.
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Abstract
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