Microemulsion alumina red mud flocculant and preparation method thereof

A technology of alumina and microemulsion, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of easy clogging of conveying pipelines and filtration systems, reduction of effective active ingredients, Unsatisfactory use effect and other problems, to achieve the effect of convenient operation, fast dispersion speed and easy automatic control

Inactive Publication Date: 2016-06-01
HEBEI BONAIDAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the flocculants used in the separation of red mud are mainly anionic polyacrylate or polyacrylamide hydrolyzate, and their formulations are mainly hydrosol, dry powder and low-concentration inverse emulsion, and the hydrosol or powder flocculants are hygroscopic Strong, easy to reduce the effective active ingredients
Poor solubility, easy to produce insoluble matter (commonly known as fish eyes) during the dissolution process, it is easy to block the delivery pipeline and filtration system, affecting the entire production process, especially in cold regions
Low-concentration inverse emulsion has the disadvantages of low molecular weight and poor stability, and the use effect is not ideal

Method used

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  • Microemulsion alumina red mud flocculant and preparation method thereof
  • Microemulsion alumina red mud flocculant and preparation method thereof
  • Microemulsion alumina red mud flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Microemulsion alumina red mud flocculant and preparation method thereof

[0047] 1. Product formula of microemulsion alumina red mud flocculant:

[0048]

[0049] (1) Take 9.9 grams of deionized water and make sodium hypophosphite into a sodium hypophosphite solution with a concentration of 1wt% for use;

[0050] (2) Add the remaining 112.6 grams of deionized water into the polymerization reactor, add the measured acrylic acid (AA) under stirring (rotation speed: 200 rpm), control the temperature at 5-25°C, and slowly Add the measured ammonia water. After the ammonia water is added, add the measured acrylamide (AM), ammonium sulfate, sodium pyrophosphate, poly-α-hydroxyacrylic acid and diisopropyl peroxydicarbonate (IPP) in sequence until complete Dissolve and prepare the aqueous phase for later use;

[0051] (3) Add the measured cyclohexane, four polyglycerol pentaoleate, and six polyglycerol monooleate into the dissolving tank with stirring in turn, stir (the spe...

Embodiment 2

[0054] Microemulsion alumina red mud flocculant and preparation method thereof

[0055] 1. Product formula of microemulsion alumina red mud flocculant:

[0056]

[0057] 2. Preparation method of microemulsion alumina red mud flocculant:

[0058] (1) Take 14.85 grams of deionized water and make sodium hypophosphite into a sodium hypophosphite solution with a concentration of 1wt% for use;

[0059] (2) Add the remaining 86.15 grams of deionized water into the polymerization reactor, add the measured acrylic acid (AA) under stirring (rotation speed: 200 rpm), control the temperature at 5-25°C, and slowly Add the measured ammonia water. After the ammonia water is added, add the measured acrylamide (AM), ammonium sulfate, sodium pyrophosphate, poly-α-hydroxyacrylic acid and diisopropyl peroxydicarbonate (IPP) in sequence until complete Dissolve and prepare the aqueous phase for later use;

[0060] (3) Add the measured cyclohexane, four polyglycerol pentaoleate, and six polygl...

Embodiment 3

[0063] Microemulsion alumina red mud flocculant and preparation method thereof

[0064] 1. Product formula of microemulsion alumina red mud flocculant:

[0065]

[0066] 2. Preparation method of microemulsion alumina red mud flocculant:

[0067] (1) Take 20 grams of deionized water and make sodium hypophosphite into a sodium hypophosphite solution with a concentration of 1wt% for use;

[0068] (2) Add the remaining 48 grams of deionized water into the polymerization reactor, add the measured acrylic acid (AA) under stirring (60 rpm), cool down to below 15°C, and slowly add the measured Ammonia, the temperature of the reaction solution is controlled at 5-25°C. After the ammonia water is added, add the measured acrylamide (AM), ammonium sulfate, sodium pyrophosphate, poly-α-hydroxyacrylic acid and diisopropyl peroxydicarbonate (IPP) in sequence until completely dissolved, and prepare the water phase stand-by;

[0069] (3) Add the measured cyclohexane, four polyglycerol pe...

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Abstract

The invention discloses a microemulsion-type aluminum oxide red mud flocculant and a preparation method thereof and relates to the technical field of polymer materials. The red mud flocculant is prepared by reacting a water phase, an oil phase, a hydroxamic acid agent and a reverse phase agent, wherein the water phase comprises the following components in parts by weight: 75-145 parts of AA, 80-160 parts of ammonia water, 60-125 parts of deionized water, 10-100 parts of AM, 0.5-4.0 parts of ammonium sulfate, 1.0-4.0 parts of sodium pyrophosphate, 0.05-0.75 part of poly-alpha-hydroxy acrylic acid, 0.05-0.25 part of sodium hypophosphite and 0.25-1.0 part of IPP; the oil phase comprises the following components in parts by weight: 90-150 parts of cyclohexane, 5-10 parts of 4-polyglycerol-5-oleate and 1.5-3.5 parts of 6-polyglycerol monooleatel; the hydroxamic acid agent comprises 5-50 parts of hydroxylamine hydrochloride; and the reverse phase agent comprises 10-15 parts of Tween20. The flocculant disclosed by the invention is a reverse-phase microemulsion product which has the advantages of good stability and instant solubility, and when the flocculant is used as the red mud flocculant to be applied in a sodium aluminate solution, the flocculant has the high dispersion speed and the good red mud sedimentation effect is achieved.

Description

technical field [0001] The invention relates to the technical field of new organic polymer chemical materials and their preparation. Background technique [0002] The alumina industry is the basic raw material industry of the national economy and plays an important role in the development of China's industrial economy. my country's alumina output ranks first in the world. At present, the alumina production method adopts the alkali method, and the red mud slurry is a suspension composed of red mud and sodium aluminate solution after the bauxite is dissolved by alkali. After the slurry is diluted, the red mud is separated from the sodium aluminate solution by sedimentation or filtration, and then alumina is produced from the sodium aluminate solution. The sedimentation and separation of red mud is one of the key links affecting the production capacity, quality and benefit of alumina. In order to strengthen the sedimentation and separation of red mud, alumina production plant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/5236C02F1/54C02F1/56
Inventor 李红波李安民李红江冯雨晴代顺豹
Owner HEBEI BONAIDAN ENVIRONMENTAL PROTECTION TECH
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