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Low-density high-effect ceramic granule and preparation method thereof

A high-efficiency, low-density technology, applied in the field of petroleum proppants, can solve the problems of reduced ceramsite resistance to crushing, and achieve the effects of easy implementation, easy availability, and low production costs

Inactive Publication Date: 2015-02-04
嘉晟新材料(遂宁)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the anti-breaking ability of ceramsite will be reduced

Method used

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  • Low-density high-effect ceramic granule and preparation method thereof
  • Low-density high-effect ceramic granule and preparation method thereof
  • Low-density high-effect ceramic granule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Low-density high-efficiency ceramsite, its raw material composition is as follows:

[0027] Lightly burned bauxite (mass percentage of aluminum is 55.8%) 1800g, lightly burned clay (mass percentage of aluminum is 47.2%) 1020g, modified clay 90g, mullite clinker 90g, modified starch (additional group points) 60g.

[0028] The preparation steps are as follows:

[0029] After the raw materials are prepared in proportion, they are ground by a ball mill to make the powder fineness reach 600 mesh and the pass rate is over 90%;

[0030] After granulation, dry ceramsite semi-finished products at 150°C;

[0031] Qualified ceramsite semi-finished products are obtained by sieving, and fired at a high temperature of 1430°C to obtain finished ceramsite.

[0032] The ceramsite 20 / 40 mesh bulk density of the finished product is 1.62g / cm 3 , the apparent density is 2.80, the 52MPa breakage rate is 3.52%, and the acid solubility is 4.8%. Example 2

Embodiment 2

[0033] Low-density high-efficiency ceramsite, its raw material composition is as follows:

[0034] Lightly burned bauxite (mass percentage of aluminum is 58.9%) 1920g, lightly burned clay (mass percentage of aluminum is 47.2%) 900g, denatured clay 90g, mullite clinker 90g, modified starch (additional group points) 60g.

[0035] The preparation steps are as follows:

[0036] After the raw materials are prepared in proportion, they are ground by a ball mill to make the powder fineness reach 600 mesh, and the pass rate is above 90%;

[0037] After granulation, dry ceramsite semi-finished products at 180°C;

[0038] Qualified ceramsite semi-finished products are obtained by screening, and fired at a high temperature of 1420°C to obtain finished ceramsite.

[0039] The ceramsite 20 / 40 mesh bulk density of the finished product is 1.60g / cm 3 , The apparent density is 2.92, the 52MPa breakage rate is 3.9%, and the acid solubility is 5.2%.

Embodiment 3

[0041] Low-density high-efficiency ceramsite, its raw material composition is as follows:

[0042] Lightly burned bauxite (mass percentage composition of aluminum is 59.1%) 1560g, lightly burned clay (mass percentage composition of aluminum is 47.2%) 1200g, denatured clay 90g, mullite clinker 150g, modified starch (additional composition points) 60g.

[0043] The preparation steps are as follows:

[0044] After the raw materials are prepared in proportion, they are ground by a ball mill to make the powder fineness reach 600 mesh and the pass rate is over 90%;

[0045] After granulation, dry ceramsite semi-finished products at 220°C;

[0046] Qualified ceramsite semi-finished products are obtained by screening, and fired at a high temperature of 1440°C to obtain finished ceramsite.

[0047] The ceramsite 20 / 40 mesh bulk density of the finished product is 1.60g / cm 3 , the apparent density is 2.92, the 52MPa breakage rate is 3.42%, and the acid solubility is 4.96%.

[0048] ...

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Abstract

The invention discloses a low-density high-effect ceramic granule and a preparation method thereof. Raw materials of the ceramic granule composed of a main ingredient and an additional ingredient, wherein the main ingredient comprises following components, by mass, 50-65% of light-roasted bauxite, 25-40% of light-roasted clay, 3-5% of denatured clay and 2-5% of a mullite clinker; and an addition amount of the additional ingredient accounts for 1-3% of the total mass of the main ingredient. The additional ingredient is a binding agent. The ceramic granule is low in density and high in anti-breaking capability.

Description

technical field [0001] The invention relates to the technical field of petroleum proppants, in particular to a low-density, high-efficiency ceramsite and a preparation method thereof. Background technique [0002] When oil and gas are exploited in deep wells, fracturing treatment is often carried out to crack the oil-gas-bearing rock formations, and oil and gas are collected from the channels formed by the cracks. Petroleum proppant and fracturing fluid are used to enter the formation and fill in the fractures of the rock formation to support the cracks from closing due to stress release, thereby maintaining high conductivity, allowing oil and gas to flow unimpeded, and increasing production. [0003] At present, the commonly used petroleum proppants mainly include the following types: 1. Low-density and medium-strength ceramsite sand products: The characteristics of low-density and medium-strength ceramsite sand produced by traditional technology are: the bulk density is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/10C04B35/622
Inventor 周丽王昕李嶙秦利
Owner 嘉晟新材料(遂宁)有限公司
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