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Low-density ceramic proppant prepared from fly ash and preparation method thereof

A technology of fly ash and proppant, used in applications, household appliances, earthwork drilling, etc., can solve problems such as river silting, dust generation, air pollution, etc., and achieve the effects of wide distribution, reduction of crushing rate, and improvement of product quality.

Inactive Publication Date: 2013-01-30
YIXING TENGFEI OIL FRACTARING PROPPANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The proppant includes the following raw material components: bauxite 70%, fly ash 25% and manganese powder 5%.

[0027] The weight percentage of main chemical composition in described bauxite is: Al 2 content of 65%~78%, Si content of 4%-12%, Fe content of 1%~7%, and Ti content of 2%~4%; the particle size of the bauxite is 320 mesh; the manganese powder mainly The weight percentages of chemical components are: 55%-65% of manganese content and 25%-35% of Si content. The particle size of the manganese powder is 320 mesh.

[0028] making process:

[0029] (1) Mix bauxite, fly ash and manganese powder evenly in proportion to obtain a mixed material;

[0030] (2) Put the mixed material into the granulator and granulate to obtain the ceramsite green body (molding particle size is 0.5-1.0mm); use spray method to add water, the amount of water added is 15% of the weight of the mixed material;

[0031] (3) The ceramsite green body was sieved and dried, and then calcined at 1...

Embodiment 2

[0033] The proppant includes the following raw material components: bauxite 65%, fly ash 30% and manganese powder 5%.

[0034] The weight percentage of main chemical composition in described bauxite is: Al 2 content of 65%~78%, Si content of 4%-12%, Fe content of 1%~7%, and Ti content of 2%~4%; the particle size of the bauxite is 320 mesh; the manganese powder mainly The weight percentages of chemical components are: 55%-65% of manganese content and 25%-35% of Si content. The particle size of the manganese powder is 320 mesh.

[0035] making process:

[0036] (1) Mix bauxite, fly ash and manganese powder evenly in proportion to obtain a mixed material;

[0037] (2) Put the mixed material into the granulator and granulate to obtain the ceramsite green body (molding particle size is 0.5-1.0mm); use spray method to add water, the amount of water added is 15% of the weight of the mixed material;

[0038] (3) The ceramsite green body was sieved and dried, and then calcined at 1...

Embodiment 3

[0040] The proppant includes the following raw material components: bauxite 80%, fly ash 14% and manganese powder 6%.

[0041] The weight percentage of main chemical composition in described bauxite is: Al 2 content of 65%~78%, Si content of 4%-12%, Fe content of 1%~7%, and Ti content of 2%~4%; the particle size of the bauxite is 320 mesh; the manganese powder mainly The weight percentage of the chemical composition is: manganese content 55%~65%, Si content 25%~35%. The particle size of the manganese powder is 320 mesh.

[0042] making process:

[0043] (1) Mixing bauxite, fly ash and manganese powder in proportion to obtain a mixture;

[0044] (2) Put the mixed material into a granulator for granulation to obtain a ceramsite body (the forming particle size is 0.5-1.0 mm); use the spray method to add water, and the amount of water added is 15% of the weight of the mixed material;

[0045] (3) The ceramsite body is sieved, dried, and then calcined at 1300° C. for 3 hours to o...

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Abstract

The invention discloses a low-density ceramic proppant prepared from fly ash and a preparation method thereof. The proppant comprises the following components, by weight: 60%-80% of bauxite, 10%-30% of fly ash and 5%-10% of manganese powder. The fly ash mainly comprises Al2O3 and SiO2, and the Al2O3 and SiO2 have higher content and purity than coal gangue, so that quality of the fly ash will not be influenced; and the fly ash has low density, and is suitable to be used as a raw material for preparation of low-density ceramic. Fly ash has wide distribution, and can be used to replace bauxite resource, which is becoming more and more limited, so as to save non-renewable resources. Compared with ceramic proppant prepared from coal gangue, the low-density ceramic proppant prepared from raw material of fly ash has substantially reduced fracture rate, bulk density and turbidity, improved product quality and reduced cost, so as to solve environmental pollution caused by fly ash emission.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic ceramic materials, and in particular relates to a low-density ceramsite proppant prepared by using fly ash and a preparation method thereof. Background technique [0002] Petroleum fracturing proppant (ceramsite sand) is a kind of ceramic particle product with high fracturing strength. It is mainly used for downhole support in oil fields to increase the production of oil and natural gas. It is an environmentally friendly product. This product is a substitute for medium and low-strength proppants such as natural quartz sand, glass balls, and metal balls, and has a good effect on increasing oil and gas production. [0003] During oil and gas deep well mining, high closure pressure and low permeability deposits are treated by fracturing to crack the oil-gas-bearing rock formations, and oil and gas gather from the channels formed by the fractures. Petroleum fracturing proppant is used along with...

Claims

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Application Information

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IPC IPC(8): C09K8/80C04B33/135
CPCY02P40/60
Inventor 黄锡明
Owner YIXING TENGFEI OIL FRACTARING PROPPANT
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