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Efficiently-degradable oil sand tailing flocculating agent and preparation method thereof

A flocculant and oil sand technology, applied in the field of material science, can solve problems such as difficult uniform mixing and photodegradation effects, and achieve excellent flocculation function, high efficiency, and simple steps

Inactive Publication Date: 2019-01-11
东北大学秦皇岛分校
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the secondary pollution caused by the degradation of PAM and the problem that titanium dioxide and sewage containing high polymers are difficult to uniformly mix and the photodegradation effect is poor, the purpose of the present invention is to provide a highly degradable oil sand tailings flocculant and its preparation method, the obtained highly degradable oil sand tailings flocculant has good photodegradation efficiency; the preparation method is easy to operate, and will not cause secondary environmental pollution

Method used

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  • Efficiently-degradable oil sand tailing flocculating agent and preparation method thereof
  • Efficiently-degradable oil sand tailing flocculating agent and preparation method thereof

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preparation example Construction

[0034] 1. Preparation of nano-titanium dioxide inorganic composite particles: nano-titanium dioxide inorganic composite particles were prepared by sol-gel method with nano-titanium dioxide and kaolin;

[0035] 2. Under ultraviolet light, acrylamide monomer polymerization is initiated on the surface of the obtained nano-titanium dioxide inorganic composite particles to obtain the oil sand tailings flocculant.

Embodiment 1

[0038] Step 1: Take kaolin, then add TiO 2 For the precursor, ethylene glycol methyl ether was used as a dispersant and ultrasonically dispersed for 15 minutes; wherein, according to the ratio of solid to liquid, kaolin: titanium dioxide precursor: ethylene glycol methyl ether = 10.0g: 0.52g: 25.0mL.

[0039] Step 2: Put the ultrasonicated liquid in step 1 into a closed blast drying oven and dry it at 70° C. for 48 hours, then calcinate the completely dried solid at 450° C. for 2 hours to obtain nano-titanium dioxide inorganic composite particles.

[0040] Step 3: Take nano-titanium dioxide inorganic composite particles and place them in a quartz test tube, add acetone solution of acrylamide, ultrasonically disperse for 8 minutes, add magnetons, and seal the test tube mouth after passing nitrogen gas for 5 minutes; wherein, the concentration of the acetone solution of acrylamide is 0.3 g / mL; the solid-liquid ratio of the nanometer titanium dioxide inorganic composite particle ...

Embodiment 2

[0044] Step 1: Take kaolin, then add TiO 2 Precursor, using ethylene glycol methyl ether as a dispersant, ultrasonically dispersed for 15 minutes; wherein, according to the ratio of solid to liquid, kaolin: titanium dioxide precursor: ethylene glycol methyl ether = 10.0g: 0.98g: 25.1mL.

[0045]Step 2: put the ultrasonicated liquid in step 1 into a closed blast drying oven and dry at 70°C for 48 hours, then calcinate the completely dried solid at 450°C for 2 hours to obtain nano-titanium dioxide inorganic composite particles.

[0046] Step 3: Get the nano-titanium dioxide inorganic composite particle and place it in a quartz test tube, add the acetone solution of acrylamide, ultrasonically disperse for 8 minutes, add magnetons, and feed nitrogen gas for 5 minutes to seal the test tube mouth; wherein, the concentration of the acetone solution of acrylamide is 0.3 g / mL; the solid-liquid ratio of the nano-titanium dioxide inorganic composite particles and the acetone solution of ...

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Abstract

The invention discloses an efficiently-degradable oil sand tailing flocculating agent. The efficiently-degradable oil sand tailing flocculating agent is obtained by adopting a nanometer titanium dioxide inorganic composite particle as a nucleus and polyacrylamide as a film, wherein the nanometer titanium dioxide inorganic composite particle is obtained through coating kaolin with titanium dioxide,and the polyacrylamide is bonded on the surface of the nanometer titanium dioxide inorganic composite particle. The efficiently-degradable oil sand tailing flocculating agent can effectively improvethe photodegradation efficiency of the polyacrylamide, and also can solve the problem of uneven dispersion of the nanometer titanium dioxide. The invention also provides a preparation method of the efficiently-degradable oil sand tailing flocculating agent. The preparation method has the advantages of simple steps, easiness in operation, mild and easily-controlled preparation conditions and high efficiency. The flocculating agent can be used in the field of polymer flocculation degradation to substitute traditional polyacrylamide, and solves the problem of pollution of outward discharge of oilsand exploitation tailings to the environment. The preparation method has the characteristics of no influences on the action effect of the flocculating agent, environmental protection and low cost.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a highly degradable oil sand tailings flocculant and a preparation method thereof. Background technique [0002] Oil sand is a kind of quartz sand rich in asphalt, and there are very rich petrochemical resources in oil sand mines. At present, the most common method of extracting bitumen from oil sand minerals is open-pit mining, which is fully mixed with hot alkaline water and soaked to separate bitumen from oil sand. This process can extract about 90% of the bitumen, but also produces a large amount of colloidal suspension containing fine sand, incompletely extracted bitumen, clay particles and other pollutants - oil sands tailings. [0003] At present, during the long-term storage of oil sand tailings, the tailings are usually divided into two parts, one part is large particles such as coarse silt that can settle to the bottom quickly, and the other part is the rema...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/30C02F1/52
CPCC02F1/30C02F1/5236C02F1/5263C02F1/56C02F2305/10
Inventor 马知雨王海旺吴佳洁晁力李雯哲魏新芳
Owner 东北大学秦皇岛分校
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