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Process for increasing viscosity of kaolinite

A kaolin, concentration technology, applied in chemical instruments and methods, clay preparation devices, clay processing equipment, etc., can solve the problems of application and no research, and achieve the effect of reducing viscosity, simplifying the use process, and improving viscosity concentration.

Inactive Publication Date: 2007-10-24
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only focus on kaolin liquid intercalation technology, no research on its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for improving the viscosity of kaolin, comprising the steps of:

[0031] 1) Weigh 110 grams of the kaolin sample (which contains 2.2 grams of moisture), 5.5 grams of urea, and mix in a high-speed mixer for 10 minutes to obtain a mixed sample.

[0032] 2) Put the mixed sample into a sealed container, put the sealed container containing the mixed sample into an oven, and intercalate at 95°C for 2 hours to obtain a kaolin / urea intercalated composite.

[0033] 3) The obtained kaolin / urea intercalation compound was dispersed in a disintegrator at a rate of 1 kg / hour to obtain the dispersed kaolin / urea intercalation compound.

[0034] 4) Add 0.55 g of dispersant naphthalenesulfonate sodium salt to the kaolin / urea intercalation compound after being dispersed, and then mix in a high-speed mixer for 5 minutes to obtain a finished product (i.e. kaolin with a high viscosity concentration). The concentration is 72.6%.

Embodiment 2

[0036]A method for improving the viscosity of kaolin, comprising the steps of:

[0037] 1) Weigh 1.5 kg of kaolin sample (45 g of water content), 75 g of urea, and mix in a high-speed mixer for 10 minutes to obtain a mixed sample.

[0038] 2) Put the mixed sample into a sealed container, and then put the sealed container containing the mixed sample into an oven at 95° C. for 3 hours to obtain a kaolin / urea intercalation composite.

[0039] 3) The obtained kaolin / urea intercalation compound is broken up in a breaker at a speed of 1 kg / hour.

[0040] 4) Add 4.5 grams of dispersant sodium hexametaphosphate to the dispersed kaolin / urea intercalation compound, and then mix it in a high-speed mixer for 5 minutes to obtain a finished product (ie, high-viscosity kaolin), with a viscosity of 72.8 %.

Embodiment 3

[0042] A method for improving the viscosity of kaolin, comprising the steps of:

[0043] 1) Weigh 110 grams of kaolin sample (which contains 4.4 grams of water), 9.9 grams of urea, and mix in a high-speed mixer for 10 minutes to obtain a mixed sample.

[0044] 2) Put the mixed sample into a sealed container, and then put the sealed container containing the mixed sample into an oven at 85° C. for 3 hours to obtain a kaolin / urea intercalation composite.

[0045] 3) The obtained kaolin / urea intercalation compound is broken up in a breaker at a speed of 1 kg / hour.

[0046] 4) Add 0.55% sodium hexametaphosphate as a dispersant to the dispersed kaolin / urea intercalation compound, and then mix in a high-speed mixer for 5 minutes to obtain a finished product (ie, high-viscosity kaolin), with a test viscosity of 72.4% .

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PUM

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Abstract

The invention relates to a method on improving the porcelain clay viscosity. In proportion, it comprises China clay 100, intercalation urea 3-9, water content of China Clay within 1-5%, mixing them for 5-15 minutes to get the mixed sample, sending the mixed sample into the sealed container, then the baker in 65-105deg.C for 2-6 hours to get the compound, breaking the compound in the speed of 1kg / 1h and mixing the compound with the broken agent for 5-10 minutes to get the final product. Using this method, it can improve the viscosity of the China Clay from around 68% to 72%-73. 8%.

Description

technical field [0001] The invention relates to a method for increasing the viscosity concentration of ridge clay. Background technique [0002] Kaolin is a widely used non-metallic mineral resource, chemical formula Al 4 (Si 4 o 10 )(OH) 8 , is a 2-octahedral 1:1 type layered silicate, and each crystal layer unit is formed by a layer of silicon-oxygen tetrahedron and a layer of aluminum-oxygen octahedron interconnected by common oxygen. Utilizing the special layered structure of kaolin, it can be organically intercalated, which is a very important method of modification. There are no exchangeable ions between the kaolin layers, and the crystal layers are tightly connected by hydrogen bonds. The intercalation of guest molecules is relatively difficult, and only a few polar molecules can be inserted. The weakening of the interlayer structural force will lead to the increase of the interlayer distance. The guest molecule can form hydrogen bonds with the Al-OH tetrahedron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C3/00B28C7/06B28C1/10
Inventor 严春杰朱小燕
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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