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Corundum-mullite ceramsite propping agent and preparation method thereof

A technology based on mullite and corundum, which is applied in the field of corundum-mullite ceramsite proppant and its preparation, can solve the problems of high energy consumption, high raw material cost, unfavorable large-scale production, etc., and achieve lower sintering temperature, lower The effect of production costs

Inactive Publication Date: 2017-10-20
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two problems in the preparation process of ceramsite proppant: one is the high cost of raw materials, which is not conducive to large-scale industrial production
Second, in the sintering process, the temperature is high and the energy consumption is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Bauxite (Al 2 o 3 The content is 63wt%, SiO 2 The content is 13wt%, Fe 2 o 3 The content is 5wt%, TiO 2 content of 3wt%, loss on ignition of 16wt%) and anorthite (Al 2 o 3 The content is 18wt%, SiO 2 content of 65wt%, CaO content of 17wt%) was crushed and ball milled to make powder, and then sieved through a 325-mesh standard sieve, and dried at a constant temperature at 100°C for 6 hours;

[0016] 2. Weigh bauxite and anorthite according to the mass ratio of 98:2 for uniform mixing, and then put the mixed powder of bauxite and anorthite in an Eilixu intensive mixer to make raw meal balls , add 18wt% water in the granulation process;

[0017] 3. Put the above-mentioned raw meal balls into a drying box to dry at 40°C, and screen out the semi-finished raw meal balls of the required specifications;

[0018] 4. Put the semi-finished raw material balls into the sintering furnace for sintering. The sintering temperature is 1300°C, and the sintering time is 4.5h. A...

Embodiment 2

[0020] 1. Bauxite (Al 2 o 3 The content is 63wt%, SiO 2 The content is 12wt%, Fe 2 o 3 The content is 4wt%, TiO 2 content of 3wt%, loss on ignition of 18wt%) and anorthite (Al 2 o 3 The content is 19wt%, SiO 2 content of 65wt%, CaO content of 16wt%) was crushed and ball milled to make powder, and dried at a constant temperature of 110°C for 5 hours;

[0021] 2. Weigh the bauxite and anorthite according to the mass ratio of 96:6 for uniform mixing, and then put the mixed powder of bauxite and anorthite in an Eilixu intensive mixer to make raw meal balls , add 17wt% water in the granulation process;

[0022] 3. Put the above-mentioned raw meal balls into a drying box to dry at 50°C, and screen out the semi-finished raw meal balls of the required specifications;

[0023] 4. Put the semi-finished raw material balls into the sintering furnace for sintering. The sintering temperature is 1350°C, and the sintering time is 4 hours. After that, it is cooled to room temperature ...

Embodiment 3

[0025] 1. Bauxite (Al 2 o 3 The content is 62wt%, SiO 2 The content is 12wt%, Fe 2 o 3 The content is 6wt%, TiO 2 content of 3wt%, loss on ignition of 17wt%) and anorthite (Al 2 o 3 The content is 18wt%, SiO 2 content of 65wt%, CaO content of 17wt%) was crushed and ball milled to make powder, and dried at a constant temperature of 110°C for 5 hours;

[0026] 2. Weigh bauxite and anorthite according to the mass ratio of 96:4 for uniform mixing, and then put the mixed powder of bauxite and anorthite in an Eilixu intensive mixer to make raw meal balls , add 16wt% water in the granulation process;

[0027] 3. Put the above-mentioned raw meal balls into a drying box to dry at 40°C, and screen out the semi-finished raw meal balls of the required specifications;

[0028] 4. Put the semi-finished raw material balls into the sintering furnace for sintering. The sintering temperature is 1400°C, and the sintering time is 3.5 hours. After that, it is cooled to room temperature wi...

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Abstract

The invention provides a corundum-mullite ceramsite propping agent and a preparation method thereof, and belongs to the technical field of an oil and gas fracturing propping agent. The corundum-mullite ceramsite propping agent and the preparation method thereof are characterized in that the ceramsite propping agent comprises 92 to 99 percent by mass of bauxite and 1 to 8 percent by mass of anorthite. The preparation method comprises the following steps: crushing, sieving and drying the bauxite and the anorthite, mixing 92 to 99 percent by mass of bauxite and 1 to 8 percent by mass of anorthite, adding 14 to 19 percent by weight of water into a mixing machine, pelletizing, drying in a drying box at 30 to 50 DEG C, screening out semi-finished product raw nodules, putting the raw nodules into a sintering furnace, sintering at 1300 to 1450 DEG C for 3 to 5 hours, air-cooling to room temperature, and sieving by a 20 / 40-mesh standard sieve to obtain the corundum-mullite ceramsite propping agent. The corundum-mullite ceramsite propping agent and the preparation method thereof have the advantages that the corundum-mullite ceramsite propping agent is low in cost, excellent in quality and suitable for wide application.

Description

technical field [0001] The invention belongs to the technical field of proppant for oil and gas fracturing, and in particular relates to a corundum-mullite ceramsite proppant and a preparation method thereof. Background technique [0002] Proppant is an important key material used in oil and natural gas extraction. At present, proppants are mainly divided into three categories: quartz sand, resin-coated ceramsite and ceramsite proppant. Due to the low strength and poor sphericity of quartz sand, it can only be used in shallow wells; while the strength and sphericity of resin-coated ceramsite have been greatly improved, but the cost is high in the manufacturing process, so it is not suitable Mass production. In contrast, ceramsite proppant has obvious advantages. Ceramsite proppant not only has high strength and good sphericity, but also has low cost in the manufacturing process, so it is widely used in oil and gas exploration construction operations. [0003] At present, ...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C09K8/80
CPCC04B35/10C04B35/622C04B2235/3208C04B2235/3463C04B2235/3481C04B2235/656C04B2235/77C04B2235/94C04B2235/96C09K8/80
Inventor 力国民马海强田玉明王凯悦邹欣伟周毅武雅乔梁丽萍郝建英柴跃生白频波李占刚
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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