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Low-density ceramsite proppant and preparation method thereof

A proppant, low-density technology, applied in the field of ceramics, can solve the problems of high consumption, high cost, and high power consumption, and achieve the effects of simple batching technology, high crush resistance, and reduced sintering temperature

Inactive Publication Date: 2019-06-07
阳泉市长青石油压裂支撑剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the increasingly stringent environmental protection inspection and related requirements in my country, ceramsite proppant companies purchase high-grade bauxite and use natural gas as fuel, resulting in higher and higher costs. Combined with the current situation of continued low international oil prices, low density The selling price of ceramsite proppant dropped to the lowest level at one time, and some enterprises even experienced the phenomenon that the cost and the market price were upside down
Therefore, in order to reduce production costs, ceramsite proppant companies such as Yangquan Changqing Petroleum Fracturing Proppant Co., Ltd. have begun to seek cheap and low-grade minerals as raw materials. Low-density ceramsite proppant; in addition, in the actual production process, the one-time addition of water to the mixture or the granulation of the binder solution takes a long period of time, high power consumption, and the sintering temperature is generally higher than 1240 ° C or higher, which consumes a lot of energy. The above process increases the production cost of low-density ceramsite proppant to a certain extent

Method used

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  • Low-density ceramsite proppant and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The low-density ceramsite proppant of the present invention is prepared from the following raw materials in weight percentage: 21% of potassium feldspar and 79% of bauxite.

[0021] K in the potassium feldspar 2 The content of O is 6 wt.%.

[0022] Al in the bauxite 2 o 3 The content is 55wt.%, SiO 2 The content is 23wt.%.

[0023] A kind of preparation method of low-density ceramsite proppant provided by the present invention comprises the following steps:

[0024] 1), bauxite and potassium feldspar are matched according to the proportion to obtain pre-homogenized ore;

[0025] 2), homogenize the above-mentioned pre-homogenized ore through a ball mill to obtain a mixture, and the particle size of the mixture all passes through 500 mesh;

[0026] 3), spray and humidify the above mixture to obtain the precursor of the ceramsite body, wherein the water content of the spray and humidify is 3wt.% of the mixture;

[0027] 4) Put the above-mentioned ceramsite precursor...

Embodiment 2

[0030] The low-density ceramsite proppant of the present invention is prepared from the following raw materials in weight percentage: 25% of potassium feldspar and 75% of bauxite.

[0031] K in the potassium feldspar 2 The content of O is 7 wt.%.

[0032] Al in the bauxite 2 o 3 The content is 57wt.%, SiO 2 The content is 21wt.%.

[0033] A kind of preparation method of low-density ceramsite proppant provided by the present invention comprises the following steps:

[0034] 1), bauxite and potassium feldspar are matched according to the proportion to obtain pre-homogenized ore;

[0035] 2), homogenize the above-mentioned pre-homogenized ore through a ball mill to obtain a mixture, and the particle size of the mixture all passes through 500 mesh;

[0036] 3) Pretreatment of the mixture by spraying and humidifying to obtain the precursor of the ceramsite body, wherein the water content of the spraying and humidifying is 3.5wt.% of the mixture;

[0037] 4) Put the above-men...

Embodiment 3

[0040] The low-density ceramsite proppant of the present invention is prepared from the following raw materials in weight percentage: 30% of potassium feldspar and 70% of bauxite.

[0041] K in the potassium feldspar 2 The content of O is 8 wt.%.

[0042] Al in the bauxite 2 o 3 The content is 60wt.%, SiO 2 The content is 18wt.%.

[0043] A kind of preparation method of low-density ceramsite proppant provided by the present invention comprises the following steps:

[0044] 1), bauxite and potassium feldspar are matched according to the proportion to obtain pre-homogenized ore;

[0045] 2), homogenize the above-mentioned pre-homogenized ore through a ball mill to obtain a mixture, and the particle size of the mixture all passes through 500 mesh;

[0046] 3) pre-treating the mixture by spraying and humidifying to obtain the precursor of the ceramsite body, wherein the water content of the spraying and humidifying is 3.7wt.% of the mixture;

[0047] 4) Put the above-mentio...

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Abstract

The invention provides a low-density ceramsite proppant and a preparation method thereof, wherein the low-density ceramsite proppant is prepared from the following raw materials in percentage by weight: potassium feldspar 21-35% and bauxite 65-79%. The raw materials used in the invention are potassium feldspar and bauxite, and the raw materials used are small in variety, easy to be homogenized andhigh in homogenization degree, and the batching process is simple. Moreover, the reserves of bauxite are high and the price is low, and bauxite can also be obtained from the slag of high-grade bauxite to realize the resource utilization of slag. Using potassium feldspar as fluxing agent, the sintering temperature is greatly reduced, the sintering time is short, the energy consumption is low and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and in particular relates to a low-density ceramsite proppant and a preparation method thereof. Background technique [0002] The research on low-density ceramsite proppant mainly uses minerals such as bauxite and coke gemstones of different grades as raw materials, manganese powder, dolomite, potassium feldspar, etc. The particle size is 300 mesh to 400 mesh, and the EIRICH intensive mixer or sugar pan is used to granulate, and the high-temperature solid-phase sintering method is used to prepare low-density ceramsite proppant, and the ceramsite proppant enterprise is in a simple process during the industrialization process. The dry ball milling process is adopted for the consideration of optimization and low cost, and the particle size of the material is controlled within 400 mesh. However, due to the increasingly stringent environmental protection inspection and related requirements in my cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
Inventor 白频波田玉明高云峰黄彪马晓娟李占刚郝建英蒙传幼
Owner 阳泉市长青石油压裂支撑剂有限公司