A method for preparing sintered permeable bricks using waste alumina adsorbent and sludge
A waste alumina and adsorbent technology, applied in applications, clay products, household appliances, etc., can solve the problems of low strength and high manufacturing cost of finished bricks, and achieve the effects of low production cost, reduced production cost, and uniform heating
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Embodiment 1
[0032] Weigh 42 parts of waste alumina adsorbent, 21 parts of municipal sludge, 12 parts of clay, 6 parts of feldspar, 9 parts of water glass and 10 parts of water in parts by weight. Add the weighed waste alumina adsorbent, municipal sludge, clay, and feldspar into the mixer, and stir for 5 minutes at a speed of 40 rpm. Then add the weighed water glass and water, and continue to stir for 5 minutes. The homogeneously mixed raw materials were aged at room temperature for 20 hours.
[0033] The stale powder is put into a mold, and pressed under a pressure of 45MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 5 minutes. Place the dried green body in the furnace, raise the temperature to 1370°C at a rate of 5°C / min, and keep it warm for 2 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared by using waste alumina adsorbent and municipal sludge.
[0034] The ...
Embodiment 2
[0036] Weigh 38 parts of waste alumina adsorbent, 25 parts of municipal sludge, 8 parts of clay, 9 parts of feldspar, 8 parts of water glass and 12 parts of water in parts by weight. Add the weighed waste alumina adsorbent, municipal sludge, clay, and feldspar into the mixer, and stir for 6 minutes at a speed of 35 rpm. Then add the weighed water glass and water, and continue to stir for 6 minutes. The homogeneously mixed raw materials were aged at room temperature for 16 hours.
[0037] The stale powder is put into a mold, and pressed under a pressure of 40MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 6 minutes. Place the dried green body in a furnace, raise the temperature to 1330°C at a rate of 4°C / min, and keep it warm for 3 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared by using waste alumina adsorbent and municipal sludge.
[0038] The com...
Embodiment 3
[0040] Weigh 45 parts of waste alumina adsorbent, 18 parts of municipal sludge, 8 parts of clay, 5 parts of feldspar, 12 parts of water glass and 12 parts of water in parts by weight. Add the weighed waste alumina adsorbent, municipal sludge, clay, and feldspar into the mixer, and stir for 8 minutes at a speed of 50 rpm. Then add the weighed water glass and water, and continue to stir for 8 minutes. The homogeneously mixed raw materials were aged at room temperature for 15 hours.
[0041] The stale powder is put into a mold, and pressed under a pressure of 50 MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 7 minutes. Place the dried green body in a furnace, raise the temperature to 1430°C at a rate of 3°C / min, and keep it warm for 2 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared by using waste alumina adsorbent and municipal sludge.
[0042] The c...
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