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 co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1:

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

[0016] 2. Weigh bauxite and anorthite at a mass ratio of 98:2 for uniform mixing, and then place the mixed powder of bauxite and anorthite in an Alrich strong mixer to granulate into raw pellets , Add 18wt% water during the granulation process;

[0017] 3. Put the above raw material balls into the drying box and dry them at 40℃, and screen out the semi-finished raw material balls of the required specifications;

[0018] 4. Put the semi-finished raw material ball into a sintering furnace for sintering. The sintering temperature is 1300℃ and the sintering t...

Example Embodiment

[0019] Example 2:

[0020] 1. Add 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 The content is 3wt%, the ignition loss is 18wt%) and anorthite (Al 2 O 3 The content is 19wt%, SiO 2 The content is 65wt%, and the content of CaO is 16wt%) After crushing and ball milling, it is made into powder, and dried at 110℃ for 5h at a constant temperature;

[0021] 2. Weigh bauxite and anorthite at a mass ratio of 96:6 for uniform mixing, and then place the mixed powder of bauxite and anorthite in an Alrich Mixer to granulate into raw pellets , Add 17wt% water during the granulation process;

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

[0023] 4. Put the semi-finished raw material ball into a sintering furnace for sintering. The sintering temperature is 1350℃ and the sintering time is 4h. After that, it is cooled to room tempe...

Example Embodiment

[0024] Example 3:

[0025] 1. Add 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 The content is 3wt%, the ignition loss is 17wt%) and anorthite (Al 2 O 3 The content is 18wt%, SiO 2 The content is 65wt%, and the content of CaO is 17wt%) After crushing and ball milling, it is made into powder, and dried at 110℃ for 5h at a constant temperature;

[0026] 2. Weigh bauxite and anorthite at a mass ratio of 96:4 for uniform mixing, and then place the mixed powder of bauxite and anorthite in an Alrich mixer to make pellets of raw materials , 16wt% water is added during the granulation process;

[0027] 3. Put the above raw material balls into the drying box and dry them at 40℃, and screen out the semi-finished raw material balls of the required specifications;

[0028] 4. Put the semi-finished raw material ball into a sintering furnace for sintering. The sintering temperature is 1400℃, and the sintering time is 3.5h. After that, it is ...

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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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