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Propping agent prepared by using boron rocks and iron ores and preparation method thereof

A technology of iron ore tailings and proppant, applied in applications, household appliances, earth square drilling, etc., can solve the problems of industrial tailings occupying farmland and mountains, low rational utilization of mine resources, and high resource development costs, etc., to achieve Improved resource utilization, excellent thermal shock resistance, and exquisite materials

Active Publication Date: 2013-06-12
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 boron and iron ore resources, but with the continuous mining for many years, 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 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

[0042] A proppant is prepared from the following raw materials: 30wt% of boron ore tailings, 50wt% of iron ore tailings and 25wt% of soft clay.

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

[0044] (1) Lightly burn the boron ore tailings at a calcination temperature of 1100°C, and then grind them to 600-700 meshes by a ball mill;

[0045](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;

[0046] (3) Get boron ore tailings, iron ore tailings and 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 semi-finished granules into a rotary kiln, burn at 1280°C, and hold for 2 hours.

Embodiment 2

[0050] A proppant is prepared from the following raw materials: 60wt% of boron ore tailings, 30wt% of iron ore tailings and 10wt% of soft clay.

[0051] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0052] (1) Lightly burn the boron ore tailings at a calcination temperature of 1250°C, and then grind them to 600-700 meshes by a ball mill;

[0053] (2) Dry the iron ore tailings and soft clay at a drying temperature of 180°C, and then grind them to 600-700 mesh by ball mill;

[0054] (3) Get boron ore tailings, iron ore tailings and soft clay according to the ratio of raw materials to make a mixture, and mix evenly;

[0055] (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;

[0056] (5) Send the semi-finished granules into the rotary kiln, the firing temperature is 1210°C, and the holding time is 1.5 h...

Embodiment 3

[0059] A proppant is prepared from the following raw materials: 50wt% of boron ore tailings, 40wt% of iron ore tailings and 15wt% of soft clay.

[0060] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0061] (1) Lightly burn the boron ore tailings at a calcination temperature of 1160°C, and then grind them to 600-700 meshes by a ball mill;

[0062] (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;

[0063] (3) get boron ore tailings, iron ore tailings, soft clay to be made into mixture by the described raw material proportioning, and mix homogeneously;

[0064] (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;

[0065] (5) Send semi-finished granules into a rotary kiln, burn at 1210°C, and hold for 1 hour.

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Abstract

The invention relates to a propping agent. The propping agent is prepared from the following raw preparation materials: boron rock tailings, iron ore tailings and soft clay. The preparation method of the propping agent comprises the following steps: firstly, carrying out light roasting treatment on the boron rock tailings, and grinding the boron rock tailings by using a ball mill; respectively carrying out dry treatment on the iron ore tailings and the soft clay, and then respectively grinding the iron ore tailings and the soft clay by using the ball mill; weighting raw materials in proportion, and uniformly mixing the raw materials so as to obtain a premix; carrying out granulation and screening on the premix; placing the premix into a rotary kiln, burning the obtained product, and carrying out heat preservation on the obtained product; carrying out screening on the burned ceramsites so as to obtain the propping agent. The propping agent disclosed by the invention has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high flow conductivity, low breakage rate, and the like; and the preparation method is small in energy consumption and large 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): C04B33/132C04B33/138C09K8/80
CPCY02P40/69Y02P40/60
Inventor 杨松聂旺发王大鹏
Owner 杨松
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