CN102942917A - Ceramsite proppant prepared from light-burned low-grade bauxite and preparation method thereof - Google Patents

Ceramsite proppant prepared from light-burned low-grade bauxite and preparation method thereof Download PDF

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Publication number
CN102942917A
CN102942917A CN2012105191044A CN201210519104A CN102942917A CN 102942917 A CN102942917 A CN 102942917A CN 2012105191044 A CN2012105191044 A CN 2012105191044A CN 201210519104 A CN201210519104 A CN 201210519104A CN 102942917 A CN102942917 A CN 102942917A
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China
Prior art keywords
light
burned
propping agent
mass content
bauxite
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CN2012105191044A
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刘作磊
高英
王蕾
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Guangyuan City Hanmei Mining Science & Technology Co Ltd
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Guangyuan City Hanmei Mining Science & Technology Co Ltd
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Priority to CN2012105191044A priority Critical patent/CN102942917A/en
Publication of CN102942917A publication Critical patent/CN102942917A/en
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Abstract

The invention discloses a ceramsite proppant prepared from light-burned low-grade bauxite, which is prepared from the following raw materials in percentage by mass: 87-92% of light-burned bauxite, 0-5% of clay, 0-4% of bentonite, 2-6% of manganese dioxide powder and 0-2% of barite. The invention also discloses a preparation method of the ceramsite proppant, which comprises the following steps: S1, pulverizing; S2, granulating; S3, drying; S4, sintering; and S5 obtaining the finished product. The invention has the following beneficial effects: the low-grade bauxite having an Al2O3 mass percent of 45-55% is used as the main raw material for the preparation of the ceramsite proppant, thereby reducing the requirement of the ceramsite proppant for the grade of bauxite and widening the selection range of the raw materials for ceramsite proppant preparation; and the low-grade bauxite is low in price, thereby reducing the raw material cost of the product. According to the invention, the light-burned bauxite is used as the raw material and has a stable moisture content, thereby being beneficial to the stability of the production process.

Description

Light-burned low-grade bauxite prepares ceramsite propping agent and preparation method thereof
Technical field
The present invention relates to the Selid propping agent technical field that oil, gasser fracturing technology are used, particularly a kind of light-burned low-grade bauxite prepares ceramsite propping agent and preparation method thereof.
Background technology
Day by day in short supply along with petroleum resources, in the oil production process, people continually develop the purpose that new technological measure reaches oil output.The oil fracturing technology is exactly a kind of important oil output technology, and the performance of propping agent plays very important effect to the effect of oil fracturing measure.The slit that the effect of propping agent produces when being to fill pressure break treats that external pressure discharges the rear support slit, forms to have the hydrocarbon flow circulation passage of high water conservancy diversion, thereby improves the output of oil gas, the time limit of service that prolongs Oil/gas Well.Propping agent commonly used mainly comprises natural siliceous sand and artificial porcelain granule propping agent at present, wherein ceramsite propping agent relies on the characteristics such as high compressive strength, high circularity, high sphericity, and having replaced quartz sand in fracturing technology becomes main adopted oil fracturing Selid propping agent.
Present domestic ceramsite propping agent mainly is to adopt Al 2O 3It is main raw material that massfraction is higher than 60% bauxite, and the more simple rawore production of main adopting process, and adds a small amount of softening agent and sintering aid, forms by tunnel furnace or rotary kiln high-temperature firing.Along with the day by day minimizing of resource, the rise of cost, country is to the restriction of higher-grade bauxite exploitation, and ceramsite propping agent manufacturer has difficulty in taking a step, and is badly in need of seeking out the method for reducing production costs.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of reduction to the bauxite grade requirement, enlarge the utilization scope of low-grade bauxite, the light-burned low-grade bauxite that reduced production cost simultaneously prepares ceramsite propping agent and preparation method thereof.
Purpose of the present invention is achieved through the following technical solutions: light-burned low-grade bauxite prepares ceramsite propping agent, and it is prepared from by the raw material of following mass percent:
Light-burned bauxite 87%～92%,
Clay 0%～5%,
Wilkinite 0%～4%,
Manganese dioxide powder 2%～6%,
Barite 0%～2%.
Described light-burned bauxite is Al 2O 3Mass content be 45%～55% bauxite under 800 ℃～1200 ℃, the product that calcining 1～3h obtains.
Al in the described wilkinite 2O 3Mass content be not less than 15%, SiO 2Mass content be 55%～70%, MgO 2Mass content be that the mass content of 4%～7%, CaO is 5%～10%.
Al in the described clay 2O 3Mass content be 25%～40%, SiO 2Mass content be 55%～65%.
MnO in the described manganese dioxide powder 2Mass content be not less than 60%.
BaSO in the described barite 4Mass content be not less than 92%.
Light-burned low-grade bauxite prepares the preparation method of ceramsite propping agent, and it may further comprise the steps:
S1 abrasive dust: take by weighing according to the above ratio each raw material, use pulverizing mill to wear into fine powder;
S2 granulation: in granulating disc, spray into the aqueous solution by hocketing and be sprinkled into dried fine powder, finish granulation, obtain the spherical granules work in-process;
S3 is dry: the spherical granules work in-process are dried to moisture content and are lower than 3%, obtain dry work in-process;
S4 sintering: with dry work in-process sintering and be incubated 0.5～2h under 1280～1350 ℃ of high temperature;
The S5 finished product: with the product naturally cooling behind the high temperature sintering until below 80 ℃, making finished product is ceramsite propping agent.
Described pulverizing mill is ball mill.
The fine powder 500 order sieving rates that obtain among the described step S1 are not less than 95%.
The granularity of the spheroidal particle that obtains among the described step S2 is 0.65mm～0.9mm.
The present invention has the following advantages: the present invention adopts Al 2O 3Mass content be that 45%～55% low-grade bauxite prepares ceramsite propping agent as main raw material, thereby reduced the requirement of ceramsite propping agent to bauxite grade, enlarged the range of choice of ceramsite propping agent raw materials, and low-grade bauxite is cheap, has reduced the raw materials cost of product; The present invention adopts light-burned bauxite as raw material, and light-burned bauxite moisture content is stable, is conducive to the stable of production technique.
Embodiment
The present invention will be further described below in conjunction with embodiment, and protection scope of the present invention is not limited to the following stated:
Embodiment 1:
Light-burned low-grade bauxite prepares ceramsite propping agent, and it is prepared from by the raw material of following mass percent:
Light-burned bauxite 87%,
Clay 4%,
Wilkinite 3%,
Manganese dioxide powder 4%,
Barite 2%.
Described light-burned bauxite is Al 2O 3Mass content be 45%～55% bauxite rawore under 800 ℃, the product that calcining 3h obtains.
Al in the described wilkinite 2O 3Mass content be not less than 15%, SiO 2Mass content be 55%～70%, MgO 2Mass content be that the mass content of 4%～7%, CaO is 5%～10%.
Al in the described clay 2O 3Mass content be 25%～40%, SiO 2Mass content be 55%～65%.
MnO in the described manganese dioxide powder 2Mass content be not less than 60%.
BaSO in the described barite 4Mass content be not less than 92%.
Light-burned low-grade bauxite prepares the preparation method of ceramsite propping agent, and it may further comprise the steps:
S1 abrasive dust: take by weighing according to the above ratio each raw material, use ball mill to wear into 500 orders washing sieving rate and be not less than 95% fine powder;
S2 granulation: in granulating disc, spray into the aqueous solution by hocketing and be sprinkled into dried fine powder, until granularity reaches 0.65mm～0.9mm, finish granulation, obtain the spherical granules work in-process;
S3 is dry: the spherical granules work in-process are dried to moisture content and are lower than 3%, obtain dry work in-process;
S4 sintering: with dry work in-process sintering and be incubated 2h under 1280 ℃ of high temperature;
The S5 finished product: with the product naturally cooling behind the high temperature sintering until below 80 ℃, making finished product is ceramsite propping agent.
After testing, product volume density 1.59g/cm 3, volume density 2.77 g/cm 3, percentage of damage is 5.5% under the 52MPa.Other index all meets the industry standard of national oil and gas SY/T5108-2006.
Embodiment 2:
Light-burned low-grade bauxite prepares ceramsite propping agent, and it is prepared from by the raw material of following mass percent:
Light-burned bauxite 88%,
Clay 5%,
Manganese dioxide powder 6%,
Barite 1%.
Described light-burned bauxite is Al 2O 3Mass content be 45%～55% bauxite rawore under 1000 ℃, the product that calcining 1h obtains.
Al in the described wilkinite 2O 3Mass content be not less than 15%, SiO 2Mass content be 55%～70%, MgO 2Mass content be that the mass content of 4%～7%, CaO is 5%～10%.
Al in the described clay 2O 3Mass content be 25%～40%, SiO 2Mass content be 55%～65%.
MnO in the described manganese dioxide powder 2Mass content be not less than 60%.
BaSO in the described barite 4Mass content be not less than 92%.
Light-burned low-grade bauxite prepares the preparation method of ceramsite propping agent, and it may further comprise the steps:
S1 abrasive dust: take by weighing according to the above ratio each raw material, use ball mill to wear into 500 orders washing sieving rate and be not less than 95% fine powder;
S2 granulation: in granulating disc, spray into the aqueous solution by hocketing and be sprinkled into dried fine powder, until granularity reaches 0.65mm～0.9mm, finish granulation, obtain the spherical granules work in-process;
S3 is dry: the spherical granules work in-process are dried to moisture content and are lower than 3%, obtain dry work in-process;
S4 sintering: with dry work in-process sintering and be incubated 1.5h under 1320 ℃ of high temperature;
The S5 finished product: with the product naturally cooling behind the high temperature sintering until below 80 ℃, making finished product is ceramsite propping agent.
After testing, product volume density 1.61g/cm 3, volume density 2.79 g/cm 3, percentage of damage is 5.1% under the 52MPa.Other index all meets the industry standard of national oil and gas SY/T5108-2006.
Embodiment 3:
Light-burned low-grade bauxite prepares ceramsite propping agent, and it is prepared from by the raw material of following mass percent:
Light-burned bauxite 92%,
Wilkinite 4%,
Manganese dioxide powder 4%.
Described light-burned bauxite is Al 2O 3Mass content be 45%～55% bauxite rawore under 1200 ℃, the product that calcining 1.5h obtains.
Al in the described wilkinite 2O 3Mass content be not less than 15%, SiO 2Mass content be 55%～70%, MgO 2Mass content be that the mass content of 4%～7%, CaO is 5%～10%.
Al in the described clay 2O 3Mass content be 25%～40%, SiO 2Mass content be 55%～65%.
MnO in the described manganese dioxide powder 2Mass content be not less than 60%.
BaSO in the described barite 4Mass content be not less than 92%.
Light-burned low-grade bauxite prepares the preparation method of ceramsite propping agent, and it may further comprise the steps:
S1 abrasive dust: take by weighing according to the above ratio each raw material, use ball mill to wear into 500 orders washing sieving rate and be not less than 95% fine powder;
S2 granulation: in granulating disc, spray into the aqueous solution by hocketing and be sprinkled into dried fine powder, until granularity reaches 0.65mm～0.9mm, finish granulation, obtain the spherical granules work in-process;
S3 is dry: the spherical granules work in-process are dried to moisture content and are lower than 3%, obtain dry work in-process;
S4 sintering: with dry work in-process sintering and be incubated 0.5h under 1350 ℃ of high temperature;
The S5 finished product: with the product naturally cooling behind the high temperature sintering until below 80 ℃, making finished product is ceramsite propping agent.
After testing, product volume density 1.64g/cm 3, volume density 2.84 g/cm 3, percentage of damage is 4.4% under the 52MPa.Other index all meets the industry standard of national oil and gas SY/T5108-2006.

Claims (10)

1. light-burned low-grade bauxite prepares ceramsite propping agent, it is characterized in that: it is prepared from by the raw material of following mass percent:
Light-burned bauxite 87%～92%,
Clay 0%～5%,
Wilkinite 0%～4%,
Manganese dioxide powder 2%～6%,
Barite 0%～2%.
2. light-burned low-grade bauxite according to claim 1 prepares ceramsite propping agent, it is characterized in that: described light-burned bauxite is Al 2O 3Mass content be 45%～55% bauxite under 800 ℃～1200 ℃, the product that calcining 1～3h obtains.
3. light-burned low-grade bauxite according to claim 1 prepares ceramsite propping agent, it is characterized in that: Al in the described wilkinite 2O 3Mass content be not less than 15%, SiO 2Mass content be 55%～70%, MgO 2Mass content be that the mass content of 4%～7%, CaO is 5%～10%.
4. light-burned low-grade bauxite according to claim 1 prepares ceramsite propping agent, it is characterized in that: Al in the described clay 2O 3Mass content be 25%～40%, SiO 2Mass content be 55%～65%.
5. light-burned low-grade bauxite according to claim 1 prepares ceramsite propping agent, it is characterized in that: MnO in the described manganese dioxide powder 2Mass content be not less than 60%.
6. light-burned low-grade bauxite according to claim 1 prepares ceramsite propping agent, it is characterized in that: BaSO in the described barite 4Mass content be not less than 92%.
7. light-burned low-grade bauxite as claimed in claim 1 prepares the preparation method of ceramsite propping agent, and it is characterized in that: it may further comprise the steps:
S1 abrasive dust: take by weighing according to the above ratio each raw material, use pulverizing mill to wear into fine powder;
S2 granulation: in granulating disc, spray into the aqueous solution by hocketing and be sprinkled into dried fine powder, finish granulation, obtain the spherical granules work in-process;
S3 is dry: the spherical granules work in-process are dried to moisture content and are lower than 3%, obtain dry work in-process;
S4 sintering: with dry work in-process sintering and be incubated 0.5～2h under 1280～1350 ℃ of high temperature;
The S5 finished product: with the product naturally cooling behind the high temperature sintering until below 80 ℃, making finished product is ceramsite propping agent.
8. light-burned low-grade bauxite according to claim 7 prepares the preparation method of ceramsite propping agent, it is characterized in that: described pulverizing mill is ball mill.
9. light-burned low-grade bauxite according to claim 7 prepares the preparation method of ceramsite propping agent, it is characterized in that: the fine powder 500 order sieving rates that obtain among the described step S1 are not less than 95%.
10. light-burned low-grade bauxite according to claim 7 prepares the preparation method of ceramsite propping agent, it is characterized in that: the granularity of the spheroidal particle that obtains among the described step S2 is 0.65mm～0.9mm.
CN2012105191044A 2012-12-06 2012-12-06 Ceramsite proppant prepared from light-burned low-grade bauxite and preparation method thereof Pending CN102942917A (en)

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CN103525396A (en) * 2013-10-17 2014-01-22 西南石油大学 Method for preparing medium-density high-strength propping agent by utilizing medium-grade and low-grade bauxite
CN105400505A (en) * 2015-12-09 2016-03-16 安东新材料（遂宁）有限公司 A low-density petroleum fracturing propping agent and a preparing method thereof
CN109232003A (en) * 2018-10-26 2019-01-18 广东清大同科环保技术有限公司 A kind of casting ceramsite sand and preparation method thereof
CN111073627A (en) * 2019-12-31 2020-04-28 西南石油大学 Lightweight porous proppant, preparation method and application thereof
CN112126423A (en) * 2020-10-16 2020-12-25 邵阳合成新型环保建材有限公司 Petroleum fracturing propping agent added with coal gangue
CN114133223A (en) * 2022-01-07 2022-03-04 山东理工大学 Energy-saving and environment-friendly low-cost ceramsite proppant and preparation method thereof

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CN103525396A (en) * 2013-10-17 2014-01-22 西南石油大学 Method for preparing medium-density high-strength propping agent by utilizing medium-grade and low-grade bauxite
CN105400505A (en) * 2015-12-09 2016-03-16 安东新材料（遂宁）有限公司 A low-density petroleum fracturing propping agent and a preparing method thereof
CN105400505B (en) * 2015-12-09 2018-10-02 安东新材料（遂宁）有限公司 Low-density petroleum fracturing propping agent and preparation method thereof
CN109232003A (en) * 2018-10-26 2019-01-18 广东清大同科环保技术有限公司 A kind of casting ceramsite sand and preparation method thereof
CN111073627A (en) * 2019-12-31 2020-04-28 西南石油大学 Lightweight porous proppant, preparation method and application thereof
CN112126423A (en) * 2020-10-16 2020-12-25 邵阳合成新型环保建材有限公司 Petroleum fracturing propping agent added with coal gangue
CN114133223A (en) * 2022-01-07 2022-03-04 山东理工大学 Energy-saving and environment-friendly low-cost ceramsite proppant and preparation method thereof

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Application publication date: 20130227