A high-solid-content emulsion-type red mud sedimentation flocculant and its preparation method
A technology with high solid content and flocculant, which is applied in the fields of chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., and can solve the problems of red mud sedimentation, molecular weight and Difficult to control the molecular weight distribution, low concentration of monomers in the polymerization solution, etc., to achieve the effect of strengthening the metal capture ability, good sedimentation effect, and less dosage
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Embodiment 1
[0034] Embodiment 1: A kind of preparation method of the emulsion type red mud sedimentation flocculant of high solid content, comprises the following steps:
[0035] Step 1. Preparation of water phase: prepare by mass parts, weigh 180-230 parts of acrylic acid and 120-200 parts of deionized water, stir evenly, and then drop 165-230 parts of 25% ammonia solution to adjust the pH value Adjust to 6.0-9.0, and control the temperature below 25°C during the whole dropping process; then add 90-192 parts of 3-phenyl-2-propene hydroxamic acid, 90-192 parts of solid acrylamide, and 9.0-15.0 parts of urea in sequence , 0.1-0.2 parts of disodium edetate and 0.005-0.01 parts of tert-butyl hydroperoxide, stirred and dissolved to obtain the water phase:
[0036] In this example, the amount of acrylamide accounts for 20% to 40% of the total amount of monomers, the amount of acrylic acid accounts for 50% to 60% of the total amount of monomers, and the amount of 3-phenyl-2-propylene hydroxamic...
Embodiment 2
[0053] Example 2: In this example, the preparation method and specific experimental data of the emulsion-type red mud sedimentation flocculant with high solid content described in Example 1 are used to prepare the emulsion-type red mud sedimentation flocculant with high solid content. The specific steps are as follows :
[0054] Step 1. Preparation of water phase: Weigh 194g of acrylic acid and 141g of deionized water, stir well, then slowly add 175g of ammonia solution with a concentration of 25% dropwise, adjust the pH to 6.5, and control the temperature to below 25°C throughout the dropping process; Then add 144g of 3-phenyl-2-propene hydroxamic acid, 96g of solid acrylamide, 10g of urea, 0.2g of disodium edetate and 0.015g of tert-butyl hydroperoxide, stir and dissolve to obtain water Mutually;
[0055] Step 2, oil phase preparation and emulsification: dissolve 17g of Span80 and Tween85 composite emulsifier and 18g of polymer stabilizer Hypermer 2234 in 205g of solvent oi...
Embodiment 3
[0060] Example 3: In this example, the preparation method and specific experimental data of the emulsion-type red mud sedimentation flocculant with high solid content described in Example 1 are used to prepare the emulsion-type red mud sedimentation flocculant with high solid content. The specific steps are as follows :
[0061] Step 1. Water phase preparation: Weigh 182g of acrylic acid and 182g of deionized water, stir well, then slowly add 172g of 25% ammonia solution dropwise, adjust the pH to 7.0, and control the temperature to below 25°C during the whole dropping process; Then add 144g of 3-phenyl-2-propene hydroxamic acid, 81g of solid acrylamide, 9.0g of urea, 0.3g of disodium edetate and 0.015g of tert-butyl hydroperoxide, stir and dissolve, and obtain water box;
[0062] Step 2, oil phase preparation and emulsification: dissolve 18g of Span80 and Tween61 composite emulsifier and 15g of polymer stabilizer Hypermer 2296 in 200g of mineral spirits D110, stir until diss...
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Abstract
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