Method for improving filter-pressing performance of particles in poly-aluminum ferric chloride
A technology for polyaluminum ferric chloride and particulate matter, which is applied in chemical instruments and methods, iron halide, water/sewage treatment, etc., can solve the problems of slow reaction speed, small flocs of polyaluminum salt, and small residual color, and saves money. cost, improving the performance of particulate matter filter press, and the effect of good water treatment
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example 1
[0027] After the bauxite is carefully cleaned, dried, and preliminarily crushed, it is put into a horse-boiling furnace and calcined at 800°C for 3 hours, ground to 120 mesh, 200g of bauxite powder is put into a four-necked reaction bottle, and 50mL of lime water is added. Stir 20mL of calcium chloride hexahydrate for 20 minutes, add 60mL of 0.98 concentrated sulfuric acid to the stirred solution, reflux at 120-140°C for 4 hours, cool to room temperature, add 20g of coal powder and iron powder, and continue to reflux at 120°C for 30 minutes , stop heating, continue to stir for 30 minutes, add 20g polyacrylamide to the stirred polyaluminum ferric chloride, stir well, put it in the reaction kettle for 2 hours at 200°C, and age it for 24 hours to obtain deep red Brown liquid polyaluminum ferric chloride. Take 200mL of polluted waste water and put them into two reaction bottles respectively, add the above-mentioned flocculant and polyaluminum ferric chloride in the reaction bottle...
example 2
[0029] After the bauxite is carefully cleaned, dried, and preliminarily crushed, it is put into a horse-boiling furnace and calcined at 800°C for 3.5 hours, ground to 120 mesh, 200g of bauxite powder is put into a four-necked reaction bottle, and 50mL of lime water is added. Stir 20mL of calcium chloride hexahydrate for 20 minutes, add 60mL of 0.98 concentrated sulfuric acid to the stirred solution, reflux at 130°C for 4 hours, cool to room temperature, add 20g of coal powder and iron powder, continue to reflux at 120°C for 30 minutes, stop Heat and keep stirring for 35 minutes, add 20g of polyacrylamide to the stirred polyaluminum ferric chloride, stir well, put it in the reaction kettle for 2 hours at 210°C, and age for 24 hours to obtain a dark reddish-brown liquid polyaluminum ferric chloride. Take 200mL of polluted waste water and put them into two reaction bottles respectively, add the above-mentioned flocculant and polyaluminum ferric chloride in the reaction bottles re...
example 3
[0031] After the bauxite is carefully cleaned, dried, and preliminarily crushed, it is put into a horse-boiling furnace for calcination at 800°C for 4 hours, ground to 120 mesh, 200g of bauxite powder is put into a four-necked reaction bottle, and 50mL of lime water is added. Stir 20mL of calcium chloride hexahydrate for 20 minutes, add 60mL of 0.98 concentrated sulfuric acid to the stirred solution, reflux at 140°C for 4 hours, cool to room temperature, add 20g of coal powder and iron powder, continue to reflux at 140°C for 30 minutes, stop Heat and keep stirring for 40 minutes, add 20g of polyacrylamide to the stirred polyaluminum ferric chloride, stir well, put it in the reaction kettle for 2 hours at 220°C, and age for 24 hours to obtain a dark reddish-brown liquid polyaluminum ferric chloride. Take 200mL of polluted waste water and put them into two reaction bottles respectively, add the above-mentioned flocculant and polyaluminum ferric chloride in the reaction bottles r...
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