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Proppant prepared from magnesium ore tailings, iron ore tailings and boron sludge

A technology of iron ore tailings and proppant, which is applied in the direction of mining fluids, earth drilling, boreholes/well components, etc. It can solve the problems of occupying farmland and mountains, environmental pollution, and low rational utilization of mine resources, and achieve anti-corrosion Stable thermal shock performance, high strength, and the effect of improving resource utilization

Inactive Publication Date: 2013-12-18
杨松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Our country is rich in magnesite, iron ore and boron resources, but with years of continuous mining, a large amount of industrial tailings such as magnesium ore tailings, iron ore tailings and boron mud have been accumulated. These industrial tailings Mine emissions not only occupy a large amount of farmland and mountains, but also become the source of environmental pollution, resulting in a vicious cycle of low utilization of mine resources and high resource development costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A proppant, the preparation raw materials are: 30wt% of magnesium ore tailings, 30wt% of boron mud, 23wt% of silica and 17wt% of soft clay.

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

[0061] (1) The magnesium ore tailings, boron mud, and silica are lightly calcined at a calcination temperature of 1100°C, and then pulverized by a ball mill to 600-700 mesh;

[0062] (2) Dry the soft clay at a drying temperature of 150°C, and then grind it to 600-700 mesh by a ball mill;

[0063] (3) Get magnesium ore tailings, boron mud, silica, soft clay according to the ratio of raw materials to make a mixture, and mix evenly;

[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 the semi-finished grains into the rotary kiln, fire at a temperature of 1280° C., and hold for 2 ...

Embodiment 2

[0068] A kind of proppant, the preparation raw material is composed of: 20wt% of magnesium ore tailings, 40wt% of boron mud, 23wt% of silica and 17wt% of soft clay.

[0069] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0070] (1) The magnesium ore tailings, boron mud, and silica are lightly calcined at a calcination temperature of 1250°C, and then pulverized by a ball mill to 600-700 mesh;

[0071] (2) Dry the soft clay at a drying temperature of 180°C, and then grind it to 600-700 mesh by a ball mill;

[0072] (3) Get magnesium ore tailings, boron mud, silica, soft clay according to the ratio of raw materials to make a mixture, and mix evenly;

[0073] (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;

[0074] (5) Send semi-finished granules into a rotary kiln, fire at 1210°C, and hold for 1.5 hou...

Embodiment 3

[0076] A proppant is prepared from the following raw materials: 60wt% of magnesium ore tailings, 23wt% of iron ore tailings and 17wt% of soft clay.

[0077] The preparation method of the above-mentioned high-strength ceramsite proppant comprises the following steps:

[0078] (1) Lightly burn the magnesium ore tailings and iron ore tailings at a calcination temperature of 1170°C, and then grind them to 600-700 meshes by a ball mill;

[0079] (2) Dry the soft clay at a drying temperature of 200°C, and then grind it to 600-700 mesh by a ball mill;

[0080] (3) get magnesium ore tailings, iron ore tailings, soft clay by the described raw material proportioning to be made into compound, and mix homogeneously;

[0081] (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;

[0082] (5) Send the semi-finished granules into the rotary kiln, the firing temperature is 1040°C, an...

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Abstract

The invention relates to a proppant. The raw materials for preparing the proppant comprise magnesium ore tailings, boron sludge, silica and soft clay, or magnesium ore tailings, iron ore tailings and soft clay, or iron ore tailings, boron sludge and soft clay, or boron sludge, silica and soft clay. The preparation method of the proppant comprises the following steps: respectively carrying out soft burning on the magnesium ore tailings, iron ore tailings, boron sludge and silica, and respectively milling by a ball mill; drying the soft clay, and milling by a ball mill; proportionally weighing the raw materials, and uniformly mixing to obtain a premix; granulating and screening the premix; sending into a rotary kiln, firing, and keeping the temperature; and screening the fired haydite to obtain the proppant. The proppant provided by the invention has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high flow conductivity, low breaking ratio and the like; and the preparation method has the characteristics of low energy consumption and high 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 by using magnesium ore tailings, iron ore tailings and boron mud 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 te...

Claims

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Application Information

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IPC IPC(8): C04B35/20C04B35/195C04B35/622C09K8/80
Inventor 杨松聂旺发王大鹏
Owner 杨松
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