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Proppant prepared by utilizing industrial tailings and preparation method thereof

A proppant and tailings technology, which is applied in the field of fracturing proppant and its preparation, can solve the problems of environmental pollution, low utilization rate of mine resources, high cost of resource development, etc., and achieve stable thermal shock resistance, high strength, The effect of improving resource utilization

Inactive Publication Date: 2013-06-26
杨松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Our country is rich in magnesite, boronite, iron ore, and silica resources, but with the continuous mining for many years, a large amount of industrial tailings have been accumulated, not only causing industrial tailings to occupy a large amount of farmland and mountains, but also It has become the source of environmental pollution, resulting in a vicious cycle of low utilization of mine resources, high resource development costs, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A proppant, the preparation raw material composition is: 25% of magnesium ore tailings, 30% of boron ore tailings, 35% of iron ore tailings and 10% of soft clay.

[0059] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0060] (1) Lightly burn the magnesium ore tailings and boron ore tailings at a calcination temperature of 1100°C, and then grind them to 600-700 meshes by a ball mill;

[0061] (2) Dry the iron ore tailings and soft clay at a drying temperature of 150°C, and then grind them to 600-700 meshes by a ball mill;

[0062] (3) Get magnesium ore tailings, boron ore tailings, iron ore tailings, soft clay according to the ratio of raw materials to make a mixture, and mix evenly;

[0063] (4) Granulate the homogeneously mixed premix obtained in the previous step through a disc granulator, and sieve to obtain semi-finished granules of 12 to 50 mesh;

[0064] (5) Send semi-finished granules into a rotar...

Embodiment 2

[0066] A proppant, the preparation raw materials are: 20% of magnesium ore tailings, 40% of boron ore tailings, 30% of silica and 10% of soft clay.

[0067] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0068] (1) The magnesium ore tailings, boron ore tailings, and silica are lightly calcined at a calcination temperature of 1250°C, and then pulverized by a ball mill to 600-700 mesh;

[0069] (2) Dry the soft clay at a drying temperature of 180°C, and then grind it to 600-700 mesh by a ball mill;

[0070] (3) Get magnesium ore tailings, boron ore tailings, silica, soft clay according to the ratio of raw materials to make a mixture, and mix evenly;

[0071] (4) Granulate the homogeneously mixed premix obtained in the previous step through a disc granulator, and sieve to obtain semi-finished granules of 12 to 50 mesh;

[0072] (5) Send semi-finished granules into a rotary kiln, fire at 1210°C, and hold for 1.5 ho...

Embodiment 3

[0074] A kind of proppant, the preparation raw material is composed of: 40% of magnesium ore tailings, 50% of iron ore tailings and 10% of soft clay.

[0075] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0076] (1) Lightly burn the magnesium ore tailings at a calcination temperature of 1170°C, and then grind them to 600-700 meshes by a ball mill;

[0077] (2) Dry the iron ore tailings and soft clay at a drying temperature of 200°C, and then grind them to 600-700 meshes by a ball mill;

[0078] (3) get magnesium ore tailings, iron ore tailings, soft clay by the described raw material proportioning to be made into compound, and mix homogeneously;

[0079] (4) Granulate the homogeneously mixed premix obtained in the previous step through a disc granulator, and sieve to obtain semi-finished granules of 12 to 50 mesh;

[0080] (5) Send the semi-finished granules into the rotary kiln, the firing temperature is 1230...

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Abstract

The invention relates to a proppant. Preparation raw materials of the proppant comprise magnesium ore tailings, iron ore tailings and soft clay, or further comprise boron ore tailings or comprise the boron ore tailings, silica and the soft clay, or further comprise the magnesium ore tailings or comprise the boron ore tailings, the iron ore tailings and the soft clay. A preparation method of the proppant comprises the following steps: firstly respectively performing light burning treatment on the magnesium ore tailings, the boron ore tailings and the silica, and further respectively performing powder grinding through a ball grinder; respectively performing drying treatment on the iron ore tailings and the soft clay, and further respectively performing powder grinding through the ball grinder; then weighing the raw materials according to a mixture ratio, and uniformly mixing to get a premix; performing granulation and screening on the premix; then sending into a rotary kiln, firing and performing heat preservation; and firing to get ceramisite, and screening to get the proppant. The proppant disclosed by the invention has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high diversion capacity, low breaking rate and the like, and the preparation method has the advantages of low energy consumption and large capacity.

Description

technical field [0001] The invention relates to a fracturing proppant and a preparation method thereof, in particular to a high-strength ceramsite proppant synthesized from industrial tailings and a preparation method thereof. Background technique [0002] Fracturing refers to a method of using hydraulic action to form cracks in oil and gas layers during oil or gas recovery. In the fracturing process of oil and gas layers, a fracturing vehicle is used to squeeze a high-pressure, large-displacement liquid with a certain viscosity into the oil layer. After many cracks are pressed out of the oil layer, proppant (such as quartz sand, etc.) is added to fill the cracks to improve oil and gas layer. Permeability to increase water injection (water injection wells) or oil production (oil wells). Fracturing technology plays an important role in the development of oil and natural gas, and the effectiveness of fracturing largely depends on the technical performance of fracturing proppa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B33/132
CPCY02P40/60
Inventor 杨松聂旺发王大鹏
Owner 杨松
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