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Proppant prepared from tailings of magnesium ore and boron ore and preparation method thereof

A proppant and tailings technology, which is applied in the direction of earthwork drilling, mining fluids, boreholes/well components, etc., can solve the problems of industrial tailings occupying farmland and mountains, low rational utilization of mine resources, and high resource development costs. , to achieve the effects of improving resource utilization, excellent thermal shock resistance, and exquisite materials

Inactive Publication Date: 2013-07-10
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, and silica resources, but with years of continuous mining, a large amount of industrial tailings have been accumulated, which not only caused industrial tailings to occupy a large amount of farmland and mountains, but also became environmental pollution. The source of mine resources, resulting in a vicious cycle of low utilization rate of mine resources, high resource development costs, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of proppant, the preparation raw material is composed of: 10wt% of magnesium ore tailings, 60wt% of boron ore tailings, 25wt% of silica and 5wt% of soft clay.

[0043] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0044] (1) The magnesium ore tailings, boron ore tailings, and silica are lightly calcined at a calcination temperature of 1100°C, and then pulverized by a ball mill to 600-700 mesh;

[0045] (2) Dry the soft clay at a drying temperature of 150°C, and then grind it to 600-700 mesh by a ball mill;

[0046] (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;

[0047] (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;

[0048] (5) Send the semi-finished granules into the rotary kiln, the ...

Embodiment 2

[0051] A kind of proppant, the preparation raw material is composed of: 40wt% of magnesium ore tailings, 20wt% of boron ore tailings, 55wt% of silica and 20wt% of soft clay.

[0052] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0053] (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;

[0054] (2) Dry the soft clay at a drying temperature of 180°C, and then grind it to 600-700 mesh by a ball mill;

[0055] (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;

[0056] (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;

[0057] (5) Send the semi-finished granules into the rotary kiln, the...

Embodiment 3

[0060] A proppant, the preparation raw material is composed of: magnesia tailings 30wt%, boron ore tailings 40wt%, silica 35wt%, soft clay 12wt%.

[0061] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0062] (1) The magnesium ore tailings, boron ore tailings, and silica are lightly calcined at a calcination temperature of 1160°C, and then pulverized by a ball mill to 600-700 mesh;

[0063] (2) Dry the soft clay at a drying temperature of 210°C, and then grind it to 600-700 mesh by a ball mill;

[0064] (3) Get magnesium ore tailings, boron ore tailings, silica, soft clay according to the raw material ratio to make a mixture, and mix evenly;

[0065] (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;

[0066] (5) Send semi-finished granules into a rotary kiln, burn at 1030°C, and hold for 1 hour.

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Abstract

The invention relates to a proppant. The proppant is prepared from magnesium ore tailings, boron ore tailings, silica and mild clay. The preparation method of the proppant comprises the following steps of: firstly respectively carrying out soft burning treatment on the magnesium ore tailings, the boron ore tailings and the silica, and then, respectively milling through a ball mill; carrying out drying treatment on the mild clay, and then, milling through a ball mill; weighing and uniformly mixing the raw materials according to a proportioning ratio so as to obtain a premixture; granulating and sieving the premixture; feeding the premixture into a rotary kiln, and carrying out heat preservation after firing; and sieving fired ceramsite, thereby obtaining the proppant. The proppant disclosed by the invention has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high flow guide capability, low broken rate and the like, and the preparation method of the proppant is low in energy consumption and high in productivity.

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): C09K8/80
Inventor 杨松聂旺发王大鹏
Owner 杨松
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