Shale brick and preparation method thereof
A technology for shale bricks and shale rocks, applied in the field of shale bricks and their preparation, can solve the problems of lower plasticity index of mixture, lower strength of shale bricks, poor plasticity of coal gangue, etc. The effect of increasing resistance and improving frost resistance
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example 1
[0020] Take 1 kg of coal gangue and add it to the oven, dry it at 60°C for 2 hours, take out the coal gangue and soak it in water for 24 hours, filter to obtain the filter residue, put the filter residue in the oven, and dry it at 85°C for 12 hours, then again Soak in water for 24 hours, then filter to obtain a filter cake, place the filter cake in a freezer pulverizer and pulverize it, pass through a 300-mesh sieve to obtain the sieved product, that is, the pretreated coal gangue powder, and then take 15g of rosin and add it to the pulverizer Put rosin particles and 100mL of 15% sodium hydroxide solution into the beaker, put the beaker into the oil bath, control the temperature of the oil bath to 110°C, stir and react for 30 minutes, then cool down to 60°C, add 25g of polyvinyl alcohol, continue to stir and mix for 3 minutes to obtain a mixed solution, transfer the mixed solution into a conical flask, and seal the bottle mouth, then move the conical flask into an oven, and pre...
example 2
[0022] Take 2 kg of coal gangue and add it to the oven, dry it at 65°C for 3 hours, take out the coal gangue and soak it in water for 25 hours, then filter to obtain the filter residue, put the filter residue in the oven, dry it at 90°C for 13 hours, and again Soak in water for 25 hours, then filter to obtain a filter cake, put the filter cake in a freezer pulverizer and pulverize it, pass through a 330-mesh sieve to obtain the sieved product, that is, the pretreated coal gangue powder, and then take 18g of rosin and add it to the pulverizer Put rosin particles and 150mL sodium hydroxide solution with a mass fraction of 15% into the beaker, move the beaker into the oil bath, control the temperature of the oil bath to 115°C, stir and react for 35 minutes, then cool down to 65°C, add 28g of polyvinyl alcohol, continue to stir and mix for 4 minutes to obtain a mixed solution, transfer the mixed solution into a conical flask, seal the mouth of the bottle, then move the conical flas...
example 3
[0024] Take 2kg of coal gangue and add it to an oven, dry it at 70°C for 3 hours, take out the coal gangue and soak it in water for 26 hours, filter to obtain a filter residue, put the filter residue in an oven, and dry it at 95°C for 14 hours, then again Soak in water for 26 hours, then filter to obtain a filter cake, put the filter cake in a freezer pulverizer and pulverize it, pass through a 360-mesh sieve to obtain the sieved product, that is, pre-treated coal gangue powder, and then take 20g of rosin and add it to the pulverizer Put rosin particles and 200mL of 15% sodium hydroxide solution into the beaker, move the beaker into the oil bath, control the temperature of the oil bath to 120°C, stir the reaction for 40 minutes, then cool down to 70°C, add 30g of polyvinyl alcohol, continue to stir and mix for 5 minutes to obtain a mixed solution, transfer the mixed solution into a conical flask, and seal the mouth of the bottle, then move the conical flask into an oven, and pr...
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