Method for preparing artificial vesuvianite building block from Bayer red mud
A Bayer red mud and volcanic stone technology is applied in the field of using Bayer red mud to produce artificial volcanic stone blocks. Sound absorption and noise reduction, hearing environment, small investment effect
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Embodiment 1
[0025] Take sodium hydroxide content as 1%, SiO 2 Bayer red mud with a content of 18%, add surfactant stearic acid with a weight of 0.1% of the weight of Bayer red mud, and then mix the above materials with 10% coal fine powder and send them to a ball mill to grind them into a 150-mesh slurry Material; above-mentioned slurry is added clay by the ratio of 6:4, then add 1% leavening agent wood sawdust, 1% blowing agent hydrogen peroxide, 4% molding binder water glass; Adopt hydraulic molding machine to above-mentioned The ingredients are extruded and rolled into 600X240X12 (length, width, height) brick adobe; the prepared adobe is naturally dried to a moisture content of 7%, and the dried adobe is put into a tunnel kiln for firing. ℃ for 3 hours, and then the fired green body is transported to the cooling zone of the tunnel kiln for gradual cooling to 70 ℃, and finally the bulk density is 450 Kg / m 3 , water absorption 16.5%, cylinder compressive strength 1.218 Mpa, water conten...
Embodiment 2
[0027] Take sodium hydroxide content as 1%, SiO 2 Bayer red mud with a content of 32%, add surfactant benzenesulfonic acid with a weight of 0.3% of the weight of Bayer red mud, then mix the above material with 10% coal fine powder and send it to a ball mill to grind it into a 180-mesh slurry Material; the above slurry is added to clay in a ratio of 7:3, then add 3% leavening agent plant fiber, 1.5% foaming agent hydrogen peroxide, and 5% molding binder sulfurous acid pulp waste liquid; adopt hydraulic molding The above-mentioned ingredients are extruded by the machine and rolled into 600X180X12 (length, width, height) bricks; the prepared bricks are naturally dried to a moisture content of 6%, and the dried bricks are put into a tunnel kiln for firing , fired at 1200°C for 6 hours, and then the fired green body was transported to the cooling zone of the tunnel kiln for gradual cooling to 60°C, and finally the bulk density was 480 Kg / m 3 , water absorption 16%, cylinder compre...
Embodiment 3
[0029] Take sodium hydroxide content as 2%, SiO 2 Bayer red mud with a content of 38%, add surfactant benzenesulfonic acid with a weight of 0.5% of the weight of Bayer red mud, and then mix the above materials with 10% coal fine powder and send them to a ball mill to grind them into a 200-mesh slurry Material; the above-mentioned slurry is added to clay in a ratio of 8:2, then add 5% of the leavening agent plant fiber, 2% of the foaming agent hydrogen peroxide, and 6% of the forming binder sulfurous acid pulp waste liquid; adopt hydraulic molding The machine extrudes the above ingredients and rolls them into 320X240X120 (length, width, height) brick adobe; the prepared adobe is naturally dried to a moisture content of 5%, and the dried adobe is put into a tunnel kiln for firing , fired at 1400°C for 8 hours, and then the fired green body was transported to the cooling zone of the tunnel kiln for gradual cooling to 60°C, and finally the bulk density was 470Kg / m 3 , water absor...
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