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Method for preparing pandermite-ethyl oxalate composite modified kaolin

A technology of ethyl oxalate and compound modification, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of low grade quality and purity, unfavorable direct utilization, etc., and achieve Improve the adsorption effect, good adsorption performance and regeneration, and the effect of large application prospects

Inactive Publication Date: 2017-02-15
GUANGXI PROVINCE NANNING CITY XUXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grade, quality and purity of the raw ore are not high, which is not conducive to direct utilization, so it is of great value to accelerate its modification and develop the application of modified products

Method used

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  • Method for preparing pandermite-ethyl oxalate composite modified kaolin

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Effect test

Embodiment 1

[0014] A preparation method of white boronite ethyl oxalate composite modified kaolin, comprising the steps of:

[0015] (1) Ingredients: take by weighing 160g of leucumite, 500g of ethyl oxalate, and 900g of kaolin respectively;

[0016] (2) Mixing: mix kaolin and vitreousite evenly, then add ethyl oxalate and stir evenly;

[0017] (3) Reaction: Pour the mixture into a high-temperature and high-pressure reactor, fill the reactor with inert gas and exhaust the air, adjust the pressure in the reactor to 2.2Mpa, and the temperature to 280°C, and place the reactor in an ultrasonic field. The frequency of the ultrasonic field is 32KHz, and the power density is 0.48w / cm 2 ;

[0018] (4) Drying: keep stirring in the reactor during the reaction process, after reacting for 20mim, cool naturally to 80°C, pour the material out of the reactor and spread it into an oven at 80°C, so that the unreacted ethyl oxalate volatilizes Clean, and then grind until the particle size is less than 1...

Embodiment 2

[0024] A preparation method of white boronite ethyl oxalate composite modified kaolin, comprising the steps of:

[0025] (1) Batching: the ratio by weight is boronite: ethyl oxalate: kaolin=5:20:40 and take each component for subsequent use;

[0026] (2) Mixing: mix kaolin and vitreousite evenly, then add ethyl oxalate and stir evenly;

[0027] (3) Reaction: Pour the mixed material into a high-temperature and high-pressure reactor, fill the reactor with inert gas to exhaust the air, adjust the pressure in the reactor to 2Mpa, and the temperature to 260°C, and place the reactor in an ultrasonic field. The frequency of the field is 30KHz and the power density is 0.45w / cm 2 ;

[0028] (4) Drying: After reacting for 15mim, cool naturally to 75°C, pour the material out of the reaction kettle and spread it into an oven at 75°C, so that the unreacted ethyl oxalate is volatilized, and the product is obtained.

Embodiment 3

[0030] A preparation method of white boronite ethyl oxalate composite modified kaolin, comprising the steps of:

[0031] (1) Batching: the ratio by weight is leucumite: ethyl oxalate: kaolin=10:30:50 and take each component for subsequent use;

[0032] (2) Mixing: mix kaolin and vitreousite evenly, then add ethyl oxalate and stir evenly;

[0033] (3) Reaction: Pour the mixed material into a high-temperature and high-pressure reactor, fill the reactor with inert gas and exhaust the air, adjust the pressure in the reactor to 2.5Mpa, and the temperature to 200°C, and place the reactor in an ultrasonic field. The frequency of the ultrasonic field is 35KHz, and the power density is 0.5w / cm 2 ;

[0034] (4) Drying: After reacting for 30mim, cool naturally to 85°C, pour the material out of the reaction kettle and spread it into an oven at 85°C, so that the unreacted ethyl oxalate is volatilized, and the product is obtained.

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Abstract

A method for preparing pandermite-ethyl oxalate composite modified kaolin comprises the following steps: according to the weight ratio of pandermite:ethyl oxalate:kaolin=(5-10):(20-30):(40-50), weighing the components for standby application; mixing the kaolin and the pandermite evenly, then adding the ethyl oxalate, and stirring evenly; and pouring the mixture into a high-temperature and high-pressure reaction kettle, filling the reaction kettle with inert gas to exhaust air, placing the reaction kettle in an ultrasonic field, carrying out a reaction for 15-30 mim, naturally cooling to make unreacted ethyl oxalate volatilized cleanly, and then grinding. The kaolin modified by the method has better adsorption and regeneration properties than original kaolin, and the modified kaolin as a selective adsorbent has considerable application prospects in the field of wastewater treatment.

Description

technical field [0001] The invention relates to a method for modifying kaolin, in particular to a method for preparing kaolin composite modified kaolin with ethyl oxalate. Background technique [0002] Kaolin is widely used in many fields such as ceramics, papermaking, rubber, coatings, building materials and environmental protection. In recent years, the application of kaolin in environmental protection at home and abroad has become more and more extensive, and my country has also begun to pay attention to the development and research of this cheap new environmental protection material. The work of using this new material to reduce wastewater treatment costs has attracted much attention. , and significant progress has been made. However, the grade, quality and purity of the raw ore are not high, which is not conducive to direct utilization, so it is of high value to accelerate its modification and develop the application of modified products. Kaolin has a large specific su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20C02F101/30C02F101/22
CPCB01J20/22B01J20/12C02F1/281C02F2101/20C02F2101/22C02F2101/30
Inventor 不公告发明人
Owner GUANGXI PROVINCE NANNING CITY XUXI TECH CO LTD
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