Method for preparing ultra-light ceramsite by using high plasticity red clay
A technology of red clay and ultra-light pottery, used in clay products, applications, ceramic products, etc., can solve problems such as poor permeability and low organic content, achieve fast heat transfer, solve environmental pollution and land occupation problems, and achieve The effect of comprehensive utilization of high added value
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Embodiment 1
[0027] A multifunctional ultra-light red clay ceramsite and a preparation method thereof, the preparation steps are as follows:
[0028] (1) Mix dry red clay powder, ordinary clay powder, limestone powder, coal powder, and anhydrous sodium carbonate evenly. In the mixture, by dry weight, there are 80 parts of red clay, 5 parts of ordinary clay, and 5 parts of limestone powder , 5 parts of pulverized coal, 5 parts of anhydrous sodium carbonate;
[0029] (2) Add the mixture into the disc pelletizer to form balls, and the spraying liquid used in the pelletizing process is water; after pelleting, two batches of raw pellets with a particle size of 5-10mm and 10-15mm are screened and dried at 130°C 3h;
[0030] (3) Preheat the dried green balls at 450°C for 60 minutes;
[0031] (4) Calcining the preheated green balls at 1040° C. for 20 minutes to obtain calcined ultra-light red clay ceramsite.
[0032] The prepared ceramsite has a bulk density of 412kg / m 3 , the apparent density...
Embodiment 2
[0034] A multifunctional ultra-light red clay ceramsite and a preparation method thereof, the preparation steps are as follows:
[0035] (1) Mix dry red clay powder, ordinary clay powder, limestone powder, coal powder, and anhydrous sodium carbonate evenly. In the mixture, by dry weight, there are 80 parts of red clay, 10 parts of ordinary clay, and 3 parts of limestone powder , 3 parts of pulverized coal, 4 parts of anhydrous sodium carbonate;
[0036] (2) Add the mixture into the disc pelletizer to form balls, and the spraying liquid used in the pelletizing process is water; after pelleting, two batches of raw pellets with a particle size of 5-10mm and 10-15mm are screened and dried at 105°C 2h;
[0037] (3) Preheat the dried green balls at 350°C for 30 minutes;
[0038] (4) Calcining the preheated green balls at 1080° C. for 25 minutes to obtain calcined ultra-light red clay ceramsite.
[0039] The prepared ceramsite has a bulk density of 423kg / m 3 , the apparent densit...
Embodiment 3
[0041]A multifunctional ultra-light red clay ceramsite and a preparation method thereof. Its preparation steps are as follows:
[0042] 1) Mix dry red clay powder, ordinary clay powder, limestone powder, and anhydrous sodium carbonate evenly. In the mixture, by dry weight, 85 parts of red clay, 8 parts of ordinary clay, 3 parts of limestone powder, and anhydrous carbonate Sodium 4 parts;
[0043] 2) Add the mixture into the disc pelletizer to form balls, and the spray liquid used in the pelletizing process is water; after pelleting, two batches of raw pellets with a particle size of 5-10mm and 10-15mm are screened and dried at 110°C for 2.5 h;
[0044] 3) Preheat the dried green balls at 400°C for 35 minutes;
[0045] 4) Calcining the preheated green balls at 1125° C. for 30 minutes to obtain calcined ultra-light red clay ceramsite.
[0046] The prepared ceramsite has a bulk density of 436kg / m 3 , the apparent density reaches 739kg / m 3 , The cylinder compressive strength...
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