A2.0 B04 grade autoclaved aerated concrete block prepared from quartz weathered sand and method thereof
A technology of quartz weathered sand and concrete blocks, which is applied in the field of A2.0B04 autoclaved aerated concrete blocks and its preparation, can solve the problems of few building materials enterprises, achieve high SiO2 content, inhibit digestion reaction, and large specific surface area Effect
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Embodiment 1
[0039] Quartz weathered sand and phosphogypsum were measured with a belt scale at a mass ratio of 100:9.6, and transported to the feed port of the ball mill, and mixed with water and waste slurry (the flow ratio of water and waste slurry was 6.7:1) to obtain a fineness of 24% slurry with a mass percentage concentration of 61.5%; crush quicklime and ball mill to prepare quicklime powder with a fineness of 9%, a digestion time of 11min, a digestion temperature of 82°C, and a mass fraction of A(CaO+MgO) of 78%; water and The aluminum powder paste is stirred evenly at a mass ratio of 9:1 to form an aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry described in the following is that after the leftover waste enters the circulating water, the density formed by stirring is 1.27g / cm 3 The main components of the mixture include water, quartz weathered sand and silica prov...
Embodiment 2
[0049] Quartz weathered sand and phosphogypsum were measured with a belt scale at a mass ratio of 100:9.6, and mixed with water and waste slurry (the flow ratio of water and waste slurry was 6.7:1) to obtain a fineness of 23% and a mass percentage concentration of 61.8% slurry; crush quicklime, ball mill to prepare quicklime powder, the fineness is 10%, the digestion time is 12min, the digestion temperature is 83°C, the mass fraction of A (CaO+MgO) is 77%; : 1 Stir evenly to form aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry is the density of 1.26g / cm formed by stirring after the leftovers in the following enter into the circulating water 3 The main components of the mixture include water, quartz weathered sand and silica provided by cement, lime and calcium hydroxide formed by hydration reaction of calcium oxide in cement, and calcium silicate hydrate.
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Embodiment 3
[0054] Quartz weathered sand and phosphogypsum were measured with a belt scale at a mass ratio of 100:9.6, and transported to the feed port of the ball mill, and mixed with water and waste slurry (the flow ratio of water and waste slurry was 6.7:1) to obtain a fineness of 23% slurry with a concentration of 60.9% by mass; crush quicklime and ball mill to prepare quicklime powder with a fineness of 9%, digestion time of 10min, digestion temperature of 84°C, A(CaO+MgO) mass fraction of 80%; water and The aluminum powder paste is stirred evenly at a mass ratio of 9:1 to form an aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry is the density of 1.25g / cm formed by stirring after the leftovers in the following enter into the circulating water 3 The main components of the mixture include water, quartz weathered sand and silica provided by cement, lime and calcium hydro...
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