CN102899015A - Low-density ceramic proppant prepared from fly ash and preparation method thereof - Google Patents
Low-density ceramic proppant prepared from fly ash and preparation method thereof Download PDFInfo
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- CN102899015A CN102899015A CN2012103530458A CN201210353045A CN102899015A CN 102899015 A CN102899015 A CN 102899015A CN 2012103530458 A CN2012103530458 A CN 2012103530458A CN 201210353045 A CN201210353045 A CN 201210353045A CN 102899015 A CN102899015 A CN 102899015A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a low-density ceramic proppant prepared from fly ash and a preparation method thereof. The proppant comprises the following components, by weight: 60%-80% of bauxite, 10%-30% of fly ash and 5%-10% of manganese powder. The fly ash mainly comprises Al2O3 and SiO2, and the Al2O3 and SiO2 have higher content and purity than coal gangue, so that quality of the fly ash will not be influenced; and the fly ash has low density, and is suitable to be used as a raw material for preparation of low-density ceramic. Fly ash has wide distribution, and can be used to replace bauxite resource, which is becoming more and more limited, so as to save non-renewable resources. Compared with ceramic proppant prepared from coal gangue, the low-density ceramic proppant prepared from raw material of fly ash has substantially reduced fracture rate, bulk density and turbidity, improved product quality and reduced cost, so as to solve environmental pollution caused by fly ash emission.
Description
Technical field
The invention belongs to inorganic non-metallic stupalith field, be specifically related to a kind of standby low-density ceramic proppant of coal ash for manufacturing and preparation method thereof that utilizes.
Background technology
Petroleum fracturing propping agent (ceramsite sand) is a kind of ceramic particle product, has very high pressure break intensity, is mainly used in oil field well and supports, and to increase the output of oil and gas, belongs to environmentfriendly products.This product is the substitute of low strength propping agent in natural siliceous sand, glass sphere, the Metal Ball etc., and the volume increase oil and gas is had good result.
During the oil and gas deep mining, high locking pressure deposits of low permeability splits Oil gas-containing rock layer after fracture treatment, and oil gas compiles from the passage that the crack forms.Enter Filling with petroleum fracturing propping agent in rock crack in company with high-pressure solution, play support the crack not stress discharge and closed effect, thereby keep high flow conductivity, make oil gas unimpeded, increase output.Facts have proved, use the oil well of petroleum fracturing propping agent pressure break can improve output 30-50%, can also prolong the Oil/gas Well length of service, is the critical material of oil, the exploitation of Sweet natural gas low-permeability oil gas well, construction.When product application is constructed in deep well fracturing, fill it in the rock crack in hyposmosis mineral deposit, carry out high closed fracture treatment, Oil gas-containing rock layer is split, play support the crack not stress discharge and closed, thereby keep the high flow conductivity of oil gas, not only can increase oil and gas production, and more can prolong the Oil/gas Well length of service.
Usually people's custom is divided into three kinds with propping agent density: low density, middle density and high-density are respectively 1.65 g/cm with volume density and volume density generally speaking
3Below and 3.0 g/cm
3Hereinafter referred to as low-density propping agent; 1.65 g/cm
3～1.80 g/cm
3With 3.00 g/cm
3～3.35g/cm
3Be middle density proppant; 1.80g/cm
3More than and 3.35 g/cm
3It more than is high density proppants.
Coal gangue is the solid waste that discharges in coal mining process and the coal washing process, be a kind of lower with a kind of carbon content of coal seam association in coalification course, than the hard black gray expandable rock of coal.Its main component of coal gangue is Al
2O
3, SiO
2, also contain in addition the Fe that quantity does not wait
2O
3, CaO, MgO, Na
2O, K
2O, P
2O
5, SO
3With micro-rare elements (gallium, vanadium, titanium, cobalt).Number of patent application is that the patent application document of 200910023599.X discloses a kind of petroleum fracturing propping agent that is added with coal gangue.But the harmful element in the coal gangue is higher such as the content of sulphur, potassium, sodium etc., can affect the quality of petroleum fracturing propping agent when the consumption of coal gangue is higher, and product strength is descended, and percentage of damage rises; And because the content of the sulphur of coal gangue is higher, obnoxious flavour that can the exhaust emission environment during production is such as sulfurous gas etc.; The particle diameter of coal gangue is generally larger, during use, needs now it to be milled to qualified granularity.
Flyash is to receive the thin ash of catching the flue gas behind coal combustion, and flyash is the main solid waste that the coal-burning power plant discharges.The main oxides of power plants flyash consists of: SiO
2, Al
2O
3, FeO, Fe
2O
3, CaO, TiO
2Deng.Flyash is one of larger industrial residue of the current discharge capacity of China, and along with the development of power industry, the flyash quantity discharged of coal-burning power plant increases year by year.A large amount of flyash does not add processing, will produce airborne dust, atmosphere pollution; Can cause the river to silt up if enter water system, and toxic chemical substance wherein also can work the mischief to human body and biology.China is again a country that per capita resource reserve is limited, the comprehensive utilization of flyash, turn waste into wealth, turn bane into boon, become important techno-economic policy in China's economic construction, to solve China's electrical production environmental pollution, the important means of resource shortage contradiction also is one of task of solution that electrical production faces.
Summary of the invention
The object of the present invention is to provide a kind of standby low-density ceramic proppant of coal ash for manufacturing and preparation method thereof that utilizes.
Another object of the present invention is to provide a kind of preparation method who utilizes the standby low-density ceramic proppant of coal ash for manufacturing.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of standby low-density ceramic proppant of coal ash for manufacturing that utilizes, percentage composition meter by weight, this propping agent comprises following feed composition: bauxitic clay 60% ~ 80%, flyash 10% ~ 30% and manganese powder 5% ~ 10%.Each feed composition sum is 100%.
The particle diameter of described bauxitic clay≤300 orders (0.045mm) is preferably 300 ~ 600 orders; The particle diameter of described manganese powder≤300 orders (0.045mm) is preferably 300 ~ 600 orders.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.。
The above-mentioned standby low-density ceramic proppant of coal ash for manufacturing that utilizes, it adopts the following methods preparation:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain the haydite base substrate; Use spray method to add water, amount of water is 10% ~ 20% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1280 ~ 1360 ℃ of lower calcining insulations 2 ~ 4 hours, obtain low-density ceramic proppant.
The above-mentioned preparation method who utilizes the standby low-density ceramic proppant of coal ash for manufacturing may further comprise the steps:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain the haydite base substrate; Use spray method to add water, amount of water is 10% ~ 20% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1280 ~ 1360 ℃ of lower calcining insulations 2 ~ 4 hours, obtain low-density ceramic proppant.
Beneficial effect of the present invention:
The main component of flyash is Al
2O
3, SiO
2, and Al
2O
3And SiO
2Content higher than coal gangue, purity is also high than coal gangue, can not affect the quality of haydite, and the density of flyash is lower, is suitable for the raw material as the preparation low-density ceramsite.Powdered coal ash widely distributed can be utilized coal ash instead high-al clay resource less and less, saves Nonrenewable resources.
Adopt flyash to compare the percentage of damage that can significantly reduce low-density ceramic proppant with coal gangue as the low-density ceramic proppant of raw material preparation, reduce the volume density of ceramsite propping agent, improve the quality product of ceramsite propping agent, reduce cost.
The comprehensive Utilization Ways of development powder coal ash turns waste into wealth, turns bane into boon, and solves the environmental pollution that the flyash discharging brings.
Embodiment
Embodiment 1
This propping agent comprises following feed composition: bauxitic clay 70%, flyash 25% and manganese powder 5%.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain haydite base substrate (the moulding particle diameter is 0.5-1.0mm); Use spray method to add water, amount of water is 15% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1300 ℃ of lower calcining insulations 3 hours, obtain low-density ceramic proppant.
Embodiment 2
This propping agent comprises following feed composition: bauxitic clay 65%, flyash 30% and manganese powder 5%.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain haydite base substrate (the moulding particle diameter is 0.5-1.0mm); Use spray method to add water, amount of water is 15% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1300 ℃ of lower calcining insulations 3 hours, obtain low-density ceramic proppant.
Embodiment 3
This propping agent comprises following feed composition: bauxitic clay 80%, flyash 14% and manganese powder 6%.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain haydite base substrate (the moulding particle diameter is 0.5-1.0mm); Use spray method to add water, amount of water is 15% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1300 ℃ of lower calcining insulations 3 hours, obtain low-density ceramic proppant.
Embodiment 4
This propping agent comprises following feed composition: bauxitic clay 63%, flyash 30% and manganese powder 7%.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain haydite base substrate (the moulding particle diameter is 0.5-1.0mm); Use spray method to add water, amount of water is 15% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1300 ℃ of lower calcining insulations 3 hours, obtain low-density ceramic proppant.
Comparative example 1
This propping agent comprises following feed composition: bauxitic clay 70%, coal gangue 25% and manganese powder 5%.
The weight percentage of main chemical compositions is in the described bauxitic clay: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) pulverized coal gangue into 320 purpose fine powders, and then mixed with bauxitic clay and manganese powder in proportion and obtain mixture;
(2) mixture is put in the tablets press granulated, obtain haydite base substrate (the moulding particle diameter is 0.5-1.0mm); Use spray method to add water, amount of water is 15% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1300 ℃ of lower calcining insulations 3 hours, obtain low-density ceramic proppant.
Table 1 is the quality product detected result of embodiment 1-4 and comparative example 1
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 |
| Volume density g/cm 3 | 1.58 | 1.45 | 1.59 | 1.46 | 1.64 |
| The 52MPa percentage of damage | 5.91 | 5.90 | 6.04 | 5.90 | 7.23 |
| Circularity | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 |
| Sphericity | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 |
| Turbidity NTV | 36 | 35 | 36 | 35 | 46.2 |
| Acid solubility % | 6.37 | 6.36 | 6.37 | 6.36 | 6.36 |
| Volume density g/cm 3 | 2.81 | 2.68 | 2.82 | 2.69 | 2.95 |
Compare with the quality examination result of product in the comparative example, the detected result of the volume density of the product of embodiment 1-4, percentage of damage, turbidity and volume density all obviously is better than comparative example.
Claims (5)
1. one kind is utilized the standby low-density ceramic proppant of coal ash for manufacturing, it is characterized in that by weight percentage composition meter, and this propping agent comprises following feed composition: bauxitic clay 60% ~ 80%, flyash 10% ~ 30% and manganese powder 5% ~ 10%.
2. the standby low-density ceramic proppant of coal ash for manufacturing that utilizes according to claim 1 is characterized in that the particle diameter of described bauxitic clay≤300 orders; The particle diameter of described manganese powder≤300 orders.
3. the standby low-density ceramic proppant of coal ash for manufacturing that utilizes according to claim 1 is characterized in that the weight percentage of main chemical compositions in the described bauxitic clay is: Al
2Content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The weight percentage of main chemical compositions is in the described manganese powder: manganese content 55% ~ 65%, Si content 25% ~ 35%.。
4. the standby low-density ceramic proppant of coal ash for manufacturing that utilizes according to claim 1 is characterized in that adopting the following methods preparation:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain the haydite base substrate; Use spray method to add water, amount of water is 10% ~ 20% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1280 ~ 1360 ℃ of lower calcining insulations 2 ~ 4 hours, obtain low-density ceramic proppant.
5. the preparation method who utilizes the standby low-density ceramic proppant of coal ash for manufacturing claimed in claim 1 is characterized in that may further comprise the steps:
(1) bauxitic clay, flyash and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in the tablets press granulated, obtain the haydite base substrate; Use spray method to add water, amount of water is 10% ~ 20% of mixture weight;
(3) with haydite base substrate screening post-drying, then 1280 ~ 1360 ℃ of lower calcining insulations 2 ~ 4 hours, obtain low-density ceramic proppant.
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|---|---|---|---|
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|---|---|---|---|
| CN201210353045.8A CN102899015B (en) | 2012-09-20 | 2012-09-20 | A kind of low-density ceramic proppant utilizing coal ash for manufacturing standby and preparation method thereof |
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| CN102899015B CN102899015B (en) | 2015-09-30 |
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| CN103194207A (en) * | 2013-04-25 | 2013-07-10 | 鹤壁天瑞石油支撑剂有限公司 | Waste ceramic produced oil fracturing proppant and preparation method thereof |
| CN103194206A (en) * | 2013-04-25 | 2013-07-10 | 鹤壁天瑞石油支撑剂有限公司 | Fly ash oil fracturing proppant and preparation method thereof |
| CN103205248A (en) * | 2013-04-25 | 2013-07-17 | 鹤壁天瑞石油支撑剂有限公司 | Coal ash and waste ceramic-prepared petroleum fracturing propping agent and preparation method thereof |
| CN103320115A (en) * | 2013-06-24 | 2013-09-25 | 昆明冶金研究院 | Method for preparing petroleum fracturing propping agent by utilizing high-alumina fly ash |
| CN103497757A (en) * | 2013-09-23 | 2014-01-08 | 铜川恒晟科技材料有限公司 | Petroleum fracturing propping agent containing fly ash in raw materials and preparation method thereof |
| CN103992786A (en) * | 2014-04-24 | 2014-08-20 | 河南省西峡县星达耐火材料有限责任公司 | Ultralow-density hollow ceramsite proppant and preparation method thereof |
| CN104293337A (en) * | 2014-09-29 | 2015-01-21 | 安东新材料（遂宁）有限公司 | Special ceramsite for shale gas and preparation method of special ceramsite |
| CN105112042A (en) * | 2015-08-25 | 2015-12-02 | 洛阳麦德陶粒有限公司 | Low-cost petroleum fracturing proppant |
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| CN105567214A (en) * | 2016-02-23 | 2016-05-11 | 沁源县元昌特材有限公司 | Ultralow-density petroleum fracturing propping agent and preparation method thereof |
| CN106497542A (en) * | 2016-08-19 | 2017-03-15 | 北京众博达石油科技有限公司 | Well fracturing proppant that a kind of flyash is fired into and preparation method thereof |
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| CN107151554A (en) * | 2016-03-03 | 2017-09-12 | 中国科学院过程工程研究所 | For riverfrac treatment or the Superlight ceramsites proppant and preparation method of anhydrous pressure break |
| CN107417150A (en) * | 2017-09-04 | 2017-12-01 | 广东清大同科环保技术有限公司 | A kind of high-strength light high-content fly ash haydite and preparation method thereof |
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| CN103194206A (en) * | 2013-04-25 | 2013-07-10 | 鹤壁天瑞石油支撑剂有限公司 | Fly ash oil fracturing proppant and preparation method thereof |
| CN103205248A (en) * | 2013-04-25 | 2013-07-17 | 鹤壁天瑞石油支撑剂有限公司 | Coal ash and waste ceramic-prepared petroleum fracturing propping agent and preparation method thereof |
| CN103194207A (en) * | 2013-04-25 | 2013-07-10 | 鹤壁天瑞石油支撑剂有限公司 | Waste ceramic produced oil fracturing proppant and preparation method thereof |
| US9611423B2 (en) | 2013-04-25 | 2017-04-04 | Hebi Tianrui Petroleum Proppant Co., Ltd | Petroleum fracturing proppant prepared from flyash and waste ceramic, and preparation method thereof |
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