CN102786922B - Method for preparing high-strength oil fracturing proppant by high-iron bauxite - Google Patents
Method for preparing high-strength oil fracturing proppant by high-iron bauxite Download PDFInfo
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- CN102786922B CN102786922B CN201210302217.9A CN201210302217A CN102786922B CN 102786922 B CN102786922 B CN 102786922B CN 201210302217 A CN201210302217 A CN 201210302217A CN 102786922 B CN102786922 B CN 102786922B
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a method for preparing high-strength oil fracturing proppant by high-iron bauxite. The high-iron bauxite is used as a raw material; and the main chemical ingredients of the high-iron bauxite comprise the components by weight: 30-60% of Al2O3, 10-30% of Fe, 1-5% of TiO2 and 1-5% of SiO2. The production method of the proppant comprises the following steps of: crushing the high-iron bauxite, adding a reducing agent according to a certain ratio, and putting the reducing agent into an atmosphere furnace to bake and magnetically separate; and putting the magnetically separated bauxite and various auxiliary materials into an airstream crusher according to the certain ratio, fully mixing and crushing, then carrying out granulation process through a disc pelletizer, obtaining green pellet-shaped ware bodies with proper grain size, and sintering the green pellet-shaped ware bodies by a rotary kiln to obtain the high-strength oil fracturing proppant product. The method is simple in process; the prices of the used raw materials are low; the sources are wide; the production cost is low; the magnetization roasting temperature is lower than that of a traditional process; the energy is saved; and the method is environment-friendly.
Description
Technical field
The present invention relates to a kind of method of being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite, belong to new material technology field.
Background technology
Petroleum fracturing propping agent is to make deep layer rock keep the support material of the state of splitting, and is mainly used in the exploitation of petroleum and natural gas deep-well.During oil and gas deep mining, high locking pressure deposits of low permeability, after fracture treatment, splits petroliferous strata, and oil gas collects from crack.With propping material, in company with high-pressure solution, enter Filling in rock crack, can play make to support crack not stress discharge and closed effect, thereby keep high flow conductivity, make oil gas unimpeded, increase output.
Conventional petroleum fracturing propping agent has the composite particles of quartz sand, haydite and various resin-coated etc. at present.Wherein the price of quartz sand is the most cheap, and relative density is lower, but the intensity of quartz sand is low, sphericity is poor, thereby has reduced the flow conductivity in crack, is not suitable for especially the deep-well that locking pressure is high.And the composite particles of employing resin-coated quartz sand, sphericity is improved, and erosion resistance can reach compared with high target, even if inner quartz sand is crushed, the coated resin layer in outside can wrap fragment, keeps the flow conductivity in crack.But this shelf life of products is short, and cost is high.
Summary of the invention
High-iron bauxite for present complicated ingredient can not directly be prepared the deficiency of petroleum fracturing propping agent as raw material, the invention provides a kind of method of being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite.
The present invention is achieved by following technical proposals: a kind of method of being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite, and it is characterized in that adopting high-iron bauxite as raw material, its weight ratio of constituents is: Al
2o
3: 30 ~ 60%, Fe:10 ~ 30%, TiO
2: 1 ~ 5%, SiO
2: 1 ~ 5%; Step is as follows:
1) high-iron bauxite is crushed to granularity and reaches 50～300 orders, add according to a certain percentage reductive agent, and carry out magnetizing roasting in atmosphere furnace, maturing temperature is controlled at 300～800 ℃;
2) high-iron bauxite after magnetizing roasting is carried out to iron removal by magnetic separation, magnetic separation strength is: 5000 ~ 14000GS;
3) by 5 ~ 20% of the bauxite gross weight after iron removal by magnetic separation, add various auxiliary materials, mix;
4) after mixed mixture enters and pulverizes in micronizer mill, enter granulation in granulating disc, obtain the suitable pellet green compact of granularity;
5) pellet green compact drop in rotary kiln, control temperature and the rotating speed of burner, stove tail, just can reach qualified petroleum fracturing propping agent product after roasting finishes.
Preferred version of the present invention is as follows:
The reductive agent that described magnetizing roasting process adopts is the materials such as gac, charcoal, bituminous coal, coke, refinery coke, iron powder, and the part by weight of high-iron bauxite and reductive agent is 1:0.5 ~ 0.05.
Described various auxiliary materials are the materials such as SILICA FUME, Manganse Dioxide, titanium dioxide, magnesiumcarbonate or magnesium oxide, zirconium dioxide, aluminium ash, wherein the part by weight of each auxiliary material is SILICA FUME: 0.1% ~ 60%, Manganse Dioxide: 0.1% ~ 10%, titanium dioxide: 0.1% ~ 20%, magnesiumcarbonate or magnesium oxide: 0.1% ~ 10%, zirconium dioxide: 0.1% ~ 10%, aluminium ash: 1% ~ 50%.
The granularity of the material of described micronizer mill after is out 5 ~ 100 μ m, and the granularity of granulating disc pellet green compact is out 0.2 ~ 1.0 mm.
The temperature of the burner of described rotary kiln is 1000 ~ 1500 ℃, and the temperature of stove tail is 500 ~ 1000 ℃, and the rotating speed of rotary kiln is 0.3 ~ 2 m/h.
Its density of petroleum fracturing propping agent that the present invention utilizes high-iron bauxite to prepare as raw material is low, and ultimate compression strength is large, can effectively solve the problem of current ultimate compression strength deficiency and refluence ability.Complete processing is simple, and facility investment is little, energy consumption is little, and the cost of material of employing is cheap and wide material sources production cost is low.Utilize the technology of magnetization deironing, solved high-iron bauxite and can not directly prepare as raw material the deficiency of propping agent, and magnetizing roasting temperature is compared with the low saving energy consumption of traditional technology.Waste water and waste that whole process produces are few, environmental protection.By experimental study, pick out the auxiliary material of superior performance, greatly increased the properties of propping agent, its product can be applied in actual production.
Embodiment
embodiment mono-
1) high-iron bauxite is carried out to fragmentation, getting 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 object bauxite mix with 30g charcoal, and maturing temperature is 550 ℃.Roasting finishes rear material and carries out iron removal by magnetic separation, and magnetic separation parameter is: 11000 ~ 12000GS.
2) bauxite after iron removal by magnetic separation mixes according to a certain percentage with various auxiliary materials, and the total weight percent of various auxiliary materials is 10%, wherein SILICA FUME in various auxiliary materials: 50%; Manganse Dioxide: 5%; Titanium dioxide: 5%; Magnesiumcarbonate or magnesium oxide: 4.5%; Zirconium dioxide: 0.5%; Aluminium ash: 35%.
3) mixed mixture enters in micronizer mill and is crushed to after raw meal particle size 10 ~ 20 μ m, enters granulation in granulating disc, obtains the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) pellet green compact drop in rotary kiln, control 1400 ℃ of end flue temperatures, 1000 ℃ of stove tail temperature, rotating speed 1 m/h.Roasting finishes rear acquisition petroleum fracturing propping agent product.
After testing, each index of product is as follows: ultimate compression strength: >=40MPa; Locking pressure: >=65MPa; Acid solubility: < 4.5%; Particle diameter: 0.40 ~ 0.50 mm; Percentage of damage: < 3.5%; Sphericity and circularity: >=0.8.
embodiment bis-
1) high-iron bauxite is carried out to fragmentation, getting 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 object bauxite mix with 80g coke, and maturing temperature is 650 ℃.Roasting finishes rear material and carries out iron removal by magnetic separation, and magnetic separation parameter is: 8000 ~ 10000GS.
2) bauxite after iron removal by magnetic separation mixes according to a certain percentage with various auxiliary materials, and the total weight percent of various auxiliary materials is 5%, wherein SILICA FUME in various auxiliary materials: 45%; Manganse Dioxide: 5%; Titanium dioxide: 5%; Magnesiumcarbonate or magnesium oxide: 4.5%; Zirconium dioxide: 0.5%; Aluminium ash: 40%.
3) mixed mixture enters in micronizer mill and is crushed to after raw meal particle size 10 ~ 20 μ m, enters granulation in granulating disc, obtains the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) pellet green compact drop in rotary kiln, control 1200 ℃ of end flue temperatures, 800 ℃ of stove tail temperature, rotating speed 1.5 m/h.Roasting finishes rear acquisition petroleum fracturing propping agent product.
After testing, each index of product is as follows: ultimate compression strength: >=50MPa; Locking pressure: >=65MPa; Acid solubility: < 4.0%; Particle diameter: 0.45 ~ 0.55 mm; Percentage of damage: < 3.0%; Sphericity and circularity: >=0.9.
embodiment tri-
1) high-iron bauxite is carried out to fragmentation, getting 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 object bauxite mix with 100g refinery coke, and maturing temperature is 450 ℃.Roasting finishes rear material and carries out iron removal by magnetic separation, and magnetic separation parameter is: 13000 ~ 15000GS;
2) bauxite after iron removal by magnetic separation mixes according to a certain percentage with various auxiliary materials, and the total weight percent of various auxiliary materials is 5%, wherein SILICA FUME in various auxiliary materials: 35%; Manganse Dioxide: 5%; Titanium dioxide: 15%; Magnesiumcarbonate or magnesium oxide: 14.5%; Zirconium dioxide: 0.5%; Aluminium ash: 35%.
3) mixed mixture enters in micronizer mill and is crushed to after raw meal particle size 40 ~ 50 μ m, enters granulation in granulating disc, obtains the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) pellet green compact drop in rotary kiln, control 1300 ℃ of end flue temperatures, 700 ℃ of stove tail temperature, rotating speed 0.8 m/h.Roasting finishes rear acquisition petroleum fracturing propping agent product.
After testing, each index of product is as follows: ultimate compression strength: >=45MPa; Locking pressure: >=65MPa; Acid solubility: < 4.2%; Particle diameter: 0.50 ~ 0.60 mm; Percentage of damage: < 3.3%; Sphericity and circularity: >=0.9.
Claims (5)
1. by high-iron bauxite, prepared a method for high-strength compress supporting agent for coarse oil, it is characterized in that adopting high-iron bauxite as raw material, its weight ratio of constituents is: Al
2o
3: 30 ~ 60%, Fe:10 ~ 30%, TiO
2: 1 ~ 5%, SiO
2: 1 ~ 5%; Step is as follows:
1) high-iron bauxite is crushed to granularity and reaches 50～300 orders, add according to a certain percentage reductive agent, and carry out magnetizing roasting in atmosphere furnace, maturing temperature is controlled at 300～800 ℃;
2) high-iron bauxite after magnetizing roasting is carried out to iron removal by magnetic separation, magnetic separation strength is: 5000 ~ 14000GS;
3) by 5 ~ 20% of the bauxite gross weight after iron removal by magnetic separation, add various auxiliary materials, mix;
4) after mixed mixture enters and pulverizes in micronizer mill, enter granulation in granulating disc, obtain the suitable pellet green compact of granularity;
5) pellet green compact drop in rotary kiln, control temperature and the rotating speed of burner, stove tail, reach qualified petroleum fracturing propping agent product after roasting finishes.
2. the method for being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1, it is characterized in that: the reductive agent that magnetizing roasting process adopts is gac, charcoal, bituminous coal, coke, refinery coke, Fe Powder matter, the part by weight of high-iron bauxite and reductive agent is 1:0.5 ~ 0.05.
3. the method for being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1, it is characterized in that: described various auxiliary materials are SILICA FUME, Manganse Dioxide, titanium dioxide, magnesiumcarbonate or magnesium oxide, zirconium dioxide, aluminium ash material, wherein the part by weight of each auxiliary material is SILICA FUME: 0.1% ~ 60%, Manganse Dioxide: 0.1% ~ 10%, titanium dioxide: 0.1% ~ 20%, magnesiumcarbonate or magnesium oxide: 0.1% ~ 10%, zirconium dioxide: 0.1% ~ 10%, aluminium ash: 1% ~ 50%.
4. the method for being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1; it is characterized in that: the granularity of the material of micronizer mill after is out 5 ~ 100 μ m, and the granularity of granulating disc pellet green compact is out 0.2 ~ 1.0 mm.
5. the method for being prepared high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1, is characterized in that: the temperature of the burner of rotary kiln is 1000 ~ 1500 ℃, and the temperature of stove tail is 500 ~ 1000 ℃, and the rotating speed of rotary kiln is 0.3 ~ 2 m/h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302217.9A CN102786922B (en) | 2012-08-23 | 2012-08-23 | Method for preparing high-strength oil fracturing proppant by high-iron bauxite |
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| CN201210302217.9A CN102786922B (en) | 2012-08-23 | 2012-08-23 | Method for preparing high-strength oil fracturing proppant by high-iron bauxite |
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| CN102786922A CN102786922A (en) | 2012-11-21 |
| CN102786922B true CN102786922B (en) | 2014-02-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2737749C1 (en) * | 2020-01-31 | 2020-12-02 | ПВТ Эволюшн Лимитед | Method of producing proppant |
Families Citing this family (10)
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|---|---|---|---|---|
| CN102925134A (en) * | 2012-11-29 | 2013-02-13 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent by use of high-iron low-grade bauxite |
| CN102942368A (en) * | 2012-11-29 | 2013-02-27 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite |
| CN103242819B (en) * | 2013-05-31 | 2016-06-01 | 三门峡方圆实业股份有限公司 | A kind of Ultrahigh-density ceramsite proppant and its preparation method |
| CN103922710B (en) * | 2014-04-22 | 2015-03-11 | 攀枝花秉扬科技开发有限公司 | Low-density and high-strength ceramic particle and manufacture method thereof |
| CN109382202A (en) * | 2018-09-20 | 2019-02-26 | 江西铜业集团有限公司 | A kind of method that iron content fluorine carbon cerium mischmetal concentrate removes iron upgrading |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN111621638B (en) * | 2020-06-03 | 2021-08-06 | 东北大学 | Suspension roasting system for strengthening reduction of iron-containing materials through heating and cracking |
| CN113649523A (en) * | 2021-08-18 | 2021-11-16 | 贵州黄平富城实业有限公司 | Raw material ore pretreatment process for bauxite processing |
| CN113582676A (en) * | 2021-08-31 | 2021-11-02 | 西南科技大学 | Magnesium aluminum silicate proppant and production process and application thereof |
| 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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| EA022413B1 (en) * | 2008-05-20 | 2015-12-30 | Оксан Материалз, Инк. | Method of use of a functional proppant for determination of subterranean fracture geometries |
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| CN1844298A (en) * | 2006-04-05 | 2006-10-11 | 渑池县方圆陶粒砂厂 | Super strength ceramic aggregate proppant and method for preparing same |
| CN101168660A (en) * | 2007-12-09 | 2008-04-30 | 宜兴东方石油支撑剂有限公司 | High-density high-strength pressure crack proppant |
| CN101270280A (en) * | 2008-04-30 | 2008-09-24 | 新密市万力实业发展有限公司 | Fracturing propping agent for oil gas well and preparation method thereof |
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| RU2737749C1 (en) * | 2020-01-31 | 2020-12-02 | ПВТ Эволюшн Лимитед | Method of producing proppant |
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Address after: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee after: Kunming Metallurgical Research Institute Co., Ltd Address before: 650031 No. 86 Yuantong North Road, Wuhua District, Yunnan, Kunming Patentee before: Kunming Metallurgical Research Institute |
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