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Surface organic modification clay ore reinforcing filler and application thereof

A technology of clay minerals and reinforcing fillers, applied in the field of reinforcing fillers, can solve problems such as time-consuming, lack of economic feasibility, complex process, etc., and achieve the effects of reducing energy consumption, saving costs, and reducing intermediate links

Active Publication Date: 2017-11-10
HEBEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some processes are complex, some are time-consuming, or not economically viable

Method used

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  • Surface organic modification clay ore reinforcing filler and application thereof
  • Surface organic modification clay ore reinforcing filler and application thereof
  • Surface organic modification clay ore reinforcing filler and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1 kg of sepiolite ore powder with D50 less than 10 μm (D50 less than 10 μm is: the diameter of 50% of the particles in the powder sample is less than 10 μm, and D50 is also called the median particle size.) was added to 15 L of water at a stirring speed of 500 rpm. Stir for 30 minutes, stop stirring to form a uniform dispersed slurry. After 12 hours of natural settlement, the siphon method was used to suck out the suspended slurry in the upper layer. Put it into a centrifuge tank, centrifuge for 5 minutes at a centrifuge speed of 1500 rpm, pour out and combine the suspended pulp in the upper layer, and obtain purified pulp. Then clean the centrifuge tank after removing the sediment, pour the purified ore slurry into the centrifuge again, set the centrifuge speed to 4500rpm, centrifuge for 5min, pour out the supernatant, scrape out the thick mud at the bottom and stir evenly to obtain Get the concentrated pulp of sepiolite after purification, the density of this pulp is...

Embodiment 2

[0045] Add 1 kg of sepiolite ore powder with D50 less than 10 μm into 15 L of water at a stirring speed of 500 rpm, stir for 30 minutes, stop stirring to form a uniformly dispersed slurry. After 12 hours of natural settlement, the siphon method was used to suck out the suspended slurry in the upper layer. Put it into a centrifuge tank, centrifuge for 5 minutes at a centrifuge speed of 1500 rpm, pour out and combine the suspended pulp in the upper layer, and obtain purified pulp. Then clean the centrifuge tank after removing the sediment, pour the purified ore slurry into the centrifuge again, set the centrifuge speed to 4500rpm, centrifuge for 7min, pour out the supernatant, scrape out the thick mud at the bottom and stir evenly to obtain Get the concentrated pulp of sepiolite after purification, the solid content of this concentrated pulp is 26.1% after measuring, and its density is 1.15g / ml;

[0046] Take 500mL of concentrated concentrate slurry with a sepiolite solid conte...

Embodiment 3

[0050] Add 1 kg of sepiolite ore powder with D50 less than 10 μm into 15 L of water at a stirring speed of 500 rpm, stir for 30 minutes, stop stirring to form a uniformly dispersed slurry. After 12 hours of natural settlement, the siphon method was used to suck out the suspended slurry in the upper layer. Put it into a centrifuge tank, centrifuge for 5 minutes at a centrifuge speed of 1500 rpm, pour out and combine the suspended pulp in the upper layer, and obtain purified pulp. Then clean the centrifuge tank after removing the sediment, pour the purified ore pulp into the centrifuge again, set the centrifuge speed to 4500rpm, centrifuge for 8min, pour out the supernatant, scrape out the thick mud at the bottom and stir evenly to obtain Get the concentrated pulp of sepiolite after purification, the solid content of concentrated pulp is 30%, and its density is 1.18g / ml;

[0051] Take 500mL of concentrated concentrate slurry with a sepiolite solid content of about 30% after pur...

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Abstract

The present invention discloses a surface organic modification clay ore reinforcing filler and application thereof, the surface organic modification clay ore reinforcing filler can regulate parameters of ore pulp according to the numerical value, as a modification basis, of Zeta potential of the ore pulp, a composite phosphate with a buffer function is selected as an ore pulp regulator, two or more composite organic reagents are used for modification; at the same time, with high-speed stirring, ultrasonic and circulation vacuum decompression process, sepiolite fiber bundles in concentrated fine ore pulp can be defibered and dispersed into monodispersed nano sepiolite ore pulp, and the modification and defibering process of sepiolite can be accelerated. The surface organic modification clay ore reinforcing filler effectively reduces the difficulty caused by large viscosity, low dewatering efficiency, complex process and high energy consumption of micro fine clay ore pulp, and avoids the difficulty of multiple times of dehydration. At the same time, twice modification operation can be reduced, and the production efficiency and the properties of organic modified powder can be improved.

Description

technical field [0001] The invention relates to using clay minerals as raw materials to directly carry out surface organic modification treatment on concentrated pulp obtained from ore dressing and separation, and to prepare reinforcing fillers for polymer composite materials such as rubber in combination with ultrafine dispersion and spray drying processes. technical background: [0002] Sepiolite mineral is a kind of hydrous magnesium-rich silicate clay mineral with chain-layer structure. According to different origins, it can be divided into hydrothermal origin and sedimentary origin. It is a 2:1 structure mineral. In each 2:1 unit structure layer, the corners of the silicon-oxygen tetrahedron wafers reverse direction at a certain distance to form a layer chain, and the magnesium-oxygen octahedron layers are equidistantly sandwiched between the tetrahedrons. Between the layers, a channel parallel to the chain is formed between the tetrahedral strips, with a cross-section ...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K7/10C08K3/34C08K3/04C08L23/16C08L9/06C08L11/00C08L9/00C08L9/02C08L7/00
CPCC08K3/04C08K3/346C08K7/10C08K9/04C08K9/06C08K9/08C08K2201/011C08L7/00C08L9/00C08L9/02C08L9/06C08L11/00C08L23/16
Inventor 汤庆国王菲谭建杰曾召刚梁金生李晗正
Owner HEBEI UNIV OF TECH
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