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Method for preparing porcelain granules by using fly ash

A technology of fly ash and ceramsite, which is applied in application, household appliances, earthwork drilling, etc., can solve the problems of complex processing technology, difficult source of raw materials, high energy consumption, etc., to save natural resources, easy to control the production process, The effect of low energy consumption

Inactive Publication Date: 2009-11-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the world, sintered corundum products are mostly used as fracturing proppants in medium and deep oil and gas fields. Although this product can meet the requirements in terms of physical and chemical properties, the source of raw materials is difficult, the processing technology is complicated, and the energy consumption and cost are high, so its application is restricted. Restrictions (Gao Haili, You Tiantian, Wu Hongxiang, etc. Development of high-strength oil fracturing proppant [J]. Panzhihua Science and Technology and Information, 2006, 31(4): 19-20)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Put the fly ash, potassium feldspar and quartz raw materials into the ball mill for dry grinding respectively, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to 2:1, grind for 1 hour respectively, and then pass 120 Mesh sieve, use permanent magnet to remove iron from the sieved fly ash, and then use electromagnetic to remove iron, so that Fe in fly ash 2 o 3 content of less than 0.5%;

[0020] 2) get fly ash after iron removal, potassium feldspar and quartz after sieving and kaolin mix by the mass percentage of fly ash: kaolin: potassium feldspar: quartz=40%: 15%: 30%: 15% Mix the material and put the mixture into a ball mill for wet grinding and mixing, use alumina ball stone as the grinding medium, control the mass ratio of balls, mixture and water to 2:1:1, and grind for 1 hour to form a mixed slurry;

[0021] 3) Use a pressure spray granulator to granulate the mixed mud. The air inlet temperature of the pr...

Embodiment 2

[0024] 1) Put the fly ash, potassium feldspar and quartz raw materials into the ball mill for dry grinding respectively, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 3:1, grind for 0.5h respectively, and then pass the 120-mesh sieve, use permanent magnet to remove iron from the sieved fly ash, and then use electromagnetic to remove iron, so that Fe in fly ash 2 o 3 content of less than 0.5%;

[0025] 2) get fly ash after iron removal, potassium feldspar and quartz after sieving and kaolin are mixed by fly ash: kaolin: potassium feldspar: quartz=50%: 10%: 30%: 10% by mass percentage to obtain Mix the mixture and put the mixture into a ball mill for wet grinding and mixing, use alumina ball stone as the grinding medium, control the mass ratio of the ball, mixture and water to 3:1:1, and grind for 0.5h to form a mixed slurry;

[0026] 3) Use a pressure spray granulator to granulate the mixed mud. The air inlet temp...

Embodiment 3

[0029] 1) Put the fly ash, potassium feldspar and quartz raw materials into the ball mill for dry grinding respectively, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to 2.5:1, grind for 2 hours respectively, and then pass through 120 Mesh sieve, use permanent magnet to remove iron from the sieved fly ash, and then use electromagnetic to remove iron, so that Fe in fly ash 2 o 3 content of less than 0.5%;

[0030] 2) get fly ash after iron removal, potassium feldspar and quartz after sieving and kaolin are mixed by the mass percentage of fly ash: kaolin: potassium feldspar: quartz=30%: 25%: 35%: 10% Mix the material and put the mixture into a ball mill for wet grinding and mixing, use alumina ball stone as the grinding medium, control the mass ratio of balls, mixture and water to 2.5:1:1, and grind for 2 hours to form a mixed slurry;

[0031] 3) Use a pressure spray granulator to granulate the mixed mud. The air inlet t...

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Abstract

The invention discloses a method for preparing porcelain granules by using fly ash, which comprises the following steps: putting fly ash, potassium feldspar and quartz as raw materials into a ball mill respectively, dry-milling the raw materials, sieving the milled raw materials respectively, removing iron from the sieved fly ash, putting the fly ash after iron removal, the sieved potassium feldspar and quartz and kaolin into the ball mill, and wet-milling and evenly mixing the materials to form mixed slurry; and granulating the mixed slurry by adopting a pressure type spray granulator, putting the granules into an alumina crucible, placing the alumina crucible into a silicon-carbon rod resistance furnace, sintering and naturally cooling the granules, and taking out the granules to obtain the high-strength porcelain granules. The method for preparing the porcelain granules by using the fly ash is not only favorable for saving natural resources and reducing the production cost, but also favorable for environmental protection. The fly ash does not need to be crushed by a high-power crusher, and the fly ash is mixed evenly. The production process is easy to control, and has little energy consumption; the strength of the prepared fly ash porcelain granules can reach 60 to 120MPa; and the porcelain granules have good properties of light weight, high temperature resistance, corrosion resistance and the like, and can be used as a fracturing propping agent for middle and deep layer oil-gas fields.

Description

technical field [0001] The invention relates to a method for preparing ceramic materials by using waste materials, in particular to a method for preparing ceramsite by using waste fly ash. Background technique [0002] Ceramsite is a new type of concrete lightweight aggregate widely developed and applied by countries all over the world in order to meet the needs of modern buildings with light weight and high performance. According to different raw materials, it can be divided into clay ceramsite, fly ash ceramsite and shale ceramsite. Fly ash ceramsite has the advantages of light weight, heat preservation, sound insulation, heat insulation, frost resistance, high strength, low water absorption, etc. It can be used as building masonry filler, heat insulation refractory material, filter material, sound-absorbing material, etc. Ceramsite and shale ceramsite have the characteristics of energy saving, waste utilization, and environmental protection (Yu Minfeng, Wang Shijie, Wang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/00C04B33/135C09K8/80
CPCY02P40/60
Inventor 黄剑锋曹丽云李颖华吴建鹏
Owner SHAANXI UNIV OF SCI & TECH
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