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Drilling waste-fly ash-shale base sintering product and preparation method

A technology for drilling waste and sintered products, which is applied in the field of waste resource recycling, can solve the problems of consuming large clay resources and destroying cultivated land, and achieves the effects of improving resource utilization, protecting cultivated land and reducing pollution

Inactive Publication Date: 2011-08-31
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of clay bricks consumes a large amount of clay resources and destroys a large amount of cultivated land every year

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Drilling waste mud is dried and ground to obtain drilling waste powder with a particle size of less than 0.15 mm. Feldspar and mica are uniformly mixed at a mass ratio of 2:1 to make a flux toughening agent. Shale and flux The molten toughening agent is ground to a particle size of less than 0.15 mm. Select each solid raw material according to the mass percentage of drilling waste 20%, fly ash 18% (particle size is less than 0.15mm), shale 60%, flux toughening agent 2%, and mix uniformly; Add solid raw material total amount 10 % water for 3 days; then formed into a blank by a vacuum extruder, placed at room temperature for 2 days, and then dried at 100±5°C for 2 days; heated at a rate of 3°C / min to About 400°C, then raise the temperature to 900°C at a heating rate of 3°C / min, keep it warm for 2 hours, and obtain a density of 1.75g / cm after cooling 3 , A sintered product with a compressive strength of 17.8MPa.

Embodiment 2

[0027] Drilling waste mud is dried and ground to obtain drilling waste powder with a particle size of less than 0.15 mm. Feldspar and mica are uniformly mixed at a mass ratio of 1:1 to make a flux toughening agent. Shale and flux The molten toughening agent is ground to a particle size of less than 0.15 mm. According to the mass percentage of drilling waste 10%, fly ash 20% (particle size less than 0.15mm), shale 65, and flux toughening agent 5%, select each solid raw material and mix them evenly; add 9.6% of the total amount of solid raw materials Aged in water for 3 days; then formed into a blank by a vacuum extruder, placed at room temperature for 3 days, and then dried at 100±5°C for 1 day; the temperature was raised to 400 at a heating rate of 3°C / min ℃, then increase the temperature to 950 ℃ at a rate of 4 ℃ / min, keep it warm for 3 hours, and after cooling, the density is 1.78g / cm 3 , A sintered product with a compressive strength of 21.7MPa.

Embodiment 3

[0029] Drilling waste mud is dried and ground to obtain drilling waste powder with a particle size of less than 0.15 mm. Feldspar and mica are uniformly mixed at a mass ratio of 1:1 to make a flux toughening agent. Shale and flux The molten toughening agent is ground to a particle size of less than 0.15 mm. According to the mass percentage of drilling waste 30%, fly ash 30%, shale 35%, flux toughening agent 5%, select each solid raw material, and mix evenly; ; then formed into a green body by a vacuum extruder, placed at room temperature to dry naturally for 3 days, and then dried at a temperature of 100±5°C for 1 day; heated to about 400°C at a heating rate of 3°C / min, and then dried at a temperature of 5°C The heating rate of ℃ / min is raised to 900 ℃, and the temperature is kept for 4 hours. After cooling, the density is 1.71g / cm 3 , A sintered product with a compressive strength of 15.6MPa.

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Abstract

The invention relates to a sintering product, and belongs to the field of waste resource recycling. The drilling waste-fly ash-shale base sintering product is characterized in that the sintering product is prepared by sintering the following raw materials, by mass, 10 to 30% of drilling waste, 10 to 30% of fly ash, 35 to 65 % of shale, and 2 to 5 % of fluxing toughening agent. The drill waste is prepared by drying and grinding the drilling waste mud. The fluxing toughening agent is a mixture of feldspar and mica at a mass ratio of 1-2:1. The sintering product utilizes the industrial waste, like the drilling waste, the fly ash, etc., thus protecting environment and saving land resources. The sintering product has the advantages of low density and high strength.

Description

technical field [0001] The invention relates to a sintered product, which belongs to the field of waste resource recycling, in particular to a drilling waste-fly ash-shale-based sintered product and a preparation method thereof. Background technique [0002] The rapid development of the economy has brought about a huge consumption of resources and energy. The demand for oil and natural gas is increasing day by day, and the extraction of oil and natural gas is also increasing. Drilling waste mud is the waste that is continuously discharged during oil and natural gas drilling. It has multiple functions such as balancing formation pressure, cooling and lubricating drill bits and drilling tools. These waste muds are a colloidal dispersion suspension system composed of clay, weighting materials, various chemical treatment agents, sewage, dirty oil, drilling cuttings and other substances, which contain a large amount of heavy metals, oils, salts and other pollutants , causing ser...

Claims

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Application Information

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IPC IPC(8): C04B33/00C04B33/132C04B33/135
CPCY02P40/60
Inventor 李相国吕阳马保国蹇守卫谭洪波袁龙陈全滨
Owner WUHAN UNIV OF TECH
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