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Method for preparing fracturing propping agent by using rejects

A technology of fracturing proppant and beneficiation waste slag, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well parts, etc. It can solve the problems of high brittleness, affecting the prospect of industrial production and popularization and application, and complex forming methods

Active Publication Date: 2012-10-10
山西高耐特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Zhangang's patent (application number CN201010136972.5) "Low-density ceramsite proppant and its preparation method" changed the molding method and used the ingenious method of multi-layer cladding to synthesize a nodular reinforced proppant with an inner core and an outer shell. The performance of the product has been improved, but the molding method is too complicated and the controllability is not strong, which affects the prospect of industrial production and popularization and application
[0010] At present, low density, high strength, low brittleness and corrosion resistance have become the main research trend of proppant ceramsite. In order to achieve this goal, different high-temperature fluxes were introduced into the proppant formula and the way of ceramsite molding was optimized, which improved to a certain extent. The mechanical properties of the proppant improve the acid resistance and salt resistance of the material. However, it still cannot fundamentally solve the shortcomings of the poor mechanical properties (brittleness) of the ceramsite proppant

Method used

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  • Method for preparing fracturing propping agent by using rejects
  • Method for preparing fracturing propping agent by using rejects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Put the gold ore tailings and lead-zinc slag into the ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 2:1, ball mill for 2 hours and pass through a 120-mesh sieve ;

[0027] 2) Take the sieved gold tailings, lead-zinc slag, alumina powder, and reinforcing agent respectively, according to gold mine tailings: lead-zinc slag: alumina powder: reinforcing agent = 30%: 15%: 45%: 10% mass percentage is mixed to obtain a mixture and the mixture is put into a ball mill and added with an aqueous solution of gum with a mass concentration of 10% to mix for wet grinding. The wet grinding uses alumina balls as a grinding medium to control the balls, mixture and The mass ratio of the 10% gum aqueous solution is 2:1:0.3, and the grinding time is 0.5h to form mixed mud, and the mud is passed through a 300-mesh sieve;

[0028] The alumina powder is industrial α-alumina (corundum powder), its coru...

Embodiment 2

[0037] 1) Put the gold ore tailings and lead-zinc slag into the ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to 2.5:1, ball mill for 1 hour and then pass through a 120-mesh sieve ;

[0038] 2) Take the screened gold tailings, lead-zinc slag, alumina powder, and reinforcing agent respectively, according to gold mine tailings: lead-zinc slag: alumina powder: reinforcing agent = 45%: 10%: 30%: 15% by mass to mix the mixture and put the mixture into a ball mill, add a gum solution with a mass concentration of 10% and mix it for wet grinding. The wet grinding uses alumina balls as the grinding medium to control the balls, mixture and The mass ratio of 10% gum aqueous solution is 2.5: 1: 0.33, and grinding time is 3h, forms mixed mud, and mud passes 300 mesh sieves;

[0039] The alumina powder is industrial α-alumina (corundum powder), its corundum content is >98%, and the particle diameter of the...

Embodiment 3

[0044] 1) Put the gold ore tailings and lead-zinc slag into the ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 3:1, ball mill for 1.5 hours and pass through 120 mesh respectively screen;

[0045] 2) Take the sieved gold tailings, lead-zinc slag, alumina powder, and reinforcing agent respectively, according to gold mine tailings: lead-zinc slag: alumina powder: reinforcing agent = 40%: 12%: 35%: 13% by mass to mix the mixture and put the mixture into a ball mill, add a gum solution with a mass concentration of 10% and mix it for wet grinding. The wet grinding uses alumina balls as the grinding medium to control the balls, mixture and The mass ratio of 10% gum aqueous solution is 3: 1: 0.38, and the grinding time is 1h to form mixed mud, and the mud is passed through a 300-mesh sieve;

[0046] The alumina powder is industrial α-alumina (corundum powder), its corundum content is >98%, and t...

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Abstract

The invention provides a method for preparing fracturing propping agent by using rejects. The method comprises the following steps of: mixing gold ore tailings, Pb-Zn slag, aluminum oxide power and reinforcing agent, adding gum water solution, and grinding, so as to obtain mixed mud; and granulating the mixed mud by a pressure type spray granulator, putting granules into an alumina crucible, and sintering, so as to prepare composite propping agent haycite. According to the method, the idea of a composite material is integrated into the incompact haycite propping agent, so that the fiber (the crystal whisker) required for enhancing the strength and the toughness can be provided in a manner of high-temperature reaction self-generation, and the high-strength, high-toughness, low-density and low-damage rate composite propping agent haycite can be prepared by using two means for enhancing the fiber and the granules, and therefore, a product can be used in a medium-deep level fracturing environment, and the final aim of the production increasing of oil gas can be realized.

Description

technical field [0001] The invention relates to a method for preparing ceramic composite materials by using waste materials, in particular to a method for preparing fracturing proppant by using ore dressing waste residue. Background technique [0002] As a new industry, fracturing proppant has not been developed for a long time in my country, its product structure and varieties are still far from perfect, and the processing scale and level of the industry are in the initial stage of development. Most oil and gas fields are of medium depth, requiring fracturing proppants to have high strength and low fragmentation rate to withstand the huge pressure of the rock formation and various corrosions in the formation environment. In the world, sintered corundum products are often 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, th...

Claims

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Application Information

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IPC IPC(8): C04B35/78C04B35/80C04B35/00C04B35/622C09K8/80
Inventor 陈平殷海荣
Owner 山西高耐特新材料科技有限公司
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