CN103805160B - The preparation method of high-content fly ash ceramsite propping agent - Google Patents
The preparation method of high-content fly ash ceramsite propping agent Download PDFInfo
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- CN103805160B CN103805160B CN201410041140.3A CN201410041140A CN103805160B CN 103805160 B CN103805160 B CN 103805160B CN 201410041140 A CN201410041140 A CN 201410041140A CN 103805160 B CN103805160 B CN 103805160B
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
The invention discloses a kind of preparation method of high-content fly ash ceramsite propping agent, comprise the steps: the bauxite of 20～65wt%, the flyash of 30～75wt%, the calcite in powder of 0～5wt%, the talcum powder of 0～10wt%, the titanium dioxide of 1～5wt%, the soft flame-proof clay of 0～20wt% and the blanc fixe of 1～5wt% mix, and obtain raw material; Raw material is placed in ball mill in Hermetical stirring mixer and carries out granulation, when granulation, adding several times mass concentration is 10% sodium silicate aqueous solution, obtains haydite base substrate; Dry described haydite base substrate; Then in comminutor, after autogenous grinding rounding, sieve, obtain raw material ball; Cooling with stove after described raw material ball intensification is fired, obtain described high-content fly ash ceramsite propping agent. This preparation method's doping quantity of fly ash can reach 30～75%, is not affecting under the prerequisite of ceramsite propping agent performance, has significantly reduced the consumption of bauxite in raw material, can significantly reduce costs, and reduces resource consumption.
Description
Technical field
The present invention relates to ceramic material field, particularly relate to a kind of system of high-content fly ash ceramsite propping agentPreparation Method.
Background technology
Fracturing Technology plays very important effect to mondial oil and gas exploitation, and pressesSplitting proppant is the key that can Fracturing Technology succeed. High-quality proppant can be Oil/gas WellExploitation plays an important role.
Ceramsite propping agent is a kind of ceramic particle product, have that particle diameter is even, compressive resistance is high, finenessThe advantage such as good, flow conductivity is strong and impurity content is few is first-selected in low-permeability oil gas field and deep miningProppant material, high-intensity ceramic fracturing propping agent can make crude oil and gas production improve 30% left and right,And the length of service that can extend Oil/gas Well.
Domestic ceramsite propping agent is mainly using alumine as primary raw material at present, multiple inorganic additiveAs auxiliary material. Alumine is as the limited mineral resources of a kind of reserves, if the production of ceramsite propping agentTo limit following large-scale use to its dependency degree is higher, and the large scale mining of alumine is also greatly brokenGo bad environment. Flyash is to receive and catch the thin ash getting off in the flue gas from coal combustion, is the current discharge capacity of ChinaOne of maximum industrial residue, a large amount of flyash does not add processing, will produce airborne dust, atmosphere pollution; IfEnter water system and can cause river to silt up, and toxic chemical substance wherein also can work the mischief to human body and biology.The particle of flyash is tiny, contained main component SiO2And Al2O3The mainly former of synthesizing ceramsite proppantMaterial, other composition is as Fe2O3, CaO and TiO2Deng the sintering aid and the mineralizer that can be used as haydite. Patent201210353045.8 a kind of standby low-density ceramic proppant of coal ash for manufacturing and preparation method thereof that utilizes is disclosed,Wherein fly ash content is 10%～30%, and the percentage of damage of product and acid solubility higher, the scope of application isNarrow.
Summary of the invention
The preparation method who the invention provides a kind of high-content fly ash ceramsite propping agent, the method is flyash mixedAmount can reach 30%～75%, not affecting under the prerequisite of ceramsite propping agent performance, has significantly reduced aluminium in raw materialThe consumption of alumina, can significantly reduce costs, and reduces resource consumption.
Technical scheme of the present invention is as follows for this reason:
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) by the bauxite of 20～65wt%, the flyash of 30～75wt%, the calcite in powder of 0～5wt%,The talcum powder of 0～10wt%, the titanium dioxide of 1～5wt%, the soft flame-proof clay of 0～20wt% and 1～5wt%'sBlanc fixe mixes, and obtains raw material;
2) described raw material is placed in to ball mill and is milled to particle diameter and is less than 48 μ m, obtain mixed powder;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, when granulation several timesAdding mass concentration is 10% sodium silicate aqueous solution, and the gross mass of described added sodium silicate aqueous solution is9～27% of described mixed powder, obtains haydite base substrate;
4) described haydite base substrate is dried, sieve after being placed in comminutor autogenous grinding rounding, obtain particle diameter and divideCloth is 16～80 object raw material balls;
5) described raw material ball is placed in to heating furnace, is first warmed up to 600～700 DEG C with the speed of 3～5 DEG C/min,Be warmed up to 1350～1500 DEG C with the speed of 10～15 DEG C/min again, insulation 40～120min, cooling with stove,Obtain described high-content fly ash ceramsite propping agent.
Described bauxite is that alundum (Al2O3) content is 60～68% bauxite.
Described flyash is F class II level concrete powder coal ash described in GB/T1596-2005.
The furnace drying method of the base substrate of haydite described in step 4) is to dry 2～3h in 80～150 DEG C.
The furnace drying method of the base substrate of haydite described in step 4) carries out in rotary dryer.
Comminutor described in step 4) is pan-type pelletizer.
The method doping quantity of fly ash can reach 30%～75%, is not affecting under the prerequisite of ceramsite propping agent performance, aobviousWork has reduced the consumption of bauxite in raw material, can significantly reduce costs, and reduces resource consumption.
Detailed description of the invention
Below in conjunction with embodiment, the preparation method of high-content fly ash ceramsite propping agent of the present invention is retouched in detailState.
Embodiment 1
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 60% bauxite, 32% flyash, 3% calcite powder, 2%Titanium dioxide, 3% blanc fixe mixes, and obtains raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 4 hours,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation three timesAdding mass concentration is 10% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder10% of material, obtains haydite base substrate;
4) described haydite base substrate is dried to 3h at 80 DEG C in rotary dryer, then drop into disk granulationAutogenous grinding rounding in machine, recycling reciprocating sieve sieves it, obtains particle diameter and is distributed in 16～80 object raw materialBall;
5) described raw material ball is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then with the speed of 10 DEG C/minBe warmed up to 1360 DEG C, insulation 40min, cooling with stove, obtain described high-content fly ash ceramsite propping agent.
Embodiment 2
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 25% bauxite, 70% flyash, 3% titanium dioxide, 2%Blanc fixe mixes, and obtains raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 2 hours,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation three timesAdding mass concentration is 10% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder23% of material, obtains haydite base substrate;
4) described haydite base substrate is dried to 2h at 150 DEG C, then drop into autogenous grinding rounding in pan-type pelletizer, thenUtilize reciprocating sieve to sieve it, obtain particle diameter and be distributed in 16～80 object raw material balls;
5) described raw material ball is placed in to kiln and is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then withThe speed of 15 DEG C/min is warmed up to 1490 DEG C, and insulation 80min is cooling with stove, obtains described high volume powderFlyash haydite proppant.
Embodiment 3
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 30% bauxite, 50% F class II level concrete powder coal ash, 2%Titanium dioxide, 10% soft flame-proof clay, 5% talcum powder, 1% calcite in powder, 2% blanc fixeMix, obtain raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 2 hours,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation four timesAdding mass concentration is 10% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder16% of material, obtains haydite base substrate;
4) described haydite base substrate is dried to 2.5h at 120 DEG C, then drops into autogenous grinding rounding in pan-type pelletizer,Recycling reciprocating sieve sieves it, obtains particle diameter and is distributed in 16～80 object raw material balls;
5) described raw material ball is placed in to kiln and is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then withThe speed of 15 DEG C/min is warmed up to 1400 DEG C, and insulation 60min is cooling with stove, obtains described high volume powderFlyash haydite proppant.
Embodiment 4
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 35% bauxite, 60% F class II level concrete powder coal ash, 1%Titanium dioxide, 2% talcum powder, 2% blanc fixe mixes, and obtains raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 3 hours,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation four timesAdding mass concentration is 19% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder19% of material, obtains haydite base substrate;
4) described haydite base substrate is placed in to rotary dryer and dries 2.8h at 90 DEG C, then drop into disc type and makeAutogenous grinding rounding in grain machine, recycling reciprocating sieve sieves it, obtains particle diameter and is distributed in 16～80 objects lifesPellet;
5) described raw material ball is placed in to kiln and is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then withThe speed of 10 DEG C/min is warmed up to 1450 DEG C, and insulation 60min is cooling with stove, obtains described high volume powderFlyash haydite proppant.
Embodiment 5
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 45% bauxite, 40% F class II level concrete powder coal ash, 2%Titanium dioxide, 10% soft flame-proof clay mix with 3% blanc fixe, obtain raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 2 hours,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation four timesAdding mass concentration is 10% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder15% of material, obtains haydite base substrate;
4) described haydite base substrate is placed in to rotary dryer and dries 2h at 140 DEG C, then drop into disk granulationAutogenous grinding rounding in machine, recycling reciprocating sieve sieves it, obtains particle diameter and is distributed in 16～80 object raw materialBall;
5) described raw material ball is placed in to kiln and is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then withThe speed of 10 DEG C/min is warmed up to 1400 DEG C, and insulation 60min is cooling with stove, obtains described high volume powderFlyash haydite proppant.
Embodiment 6
A preparation method for high-content fly ash ceramsite propping agent, comprises the steps:
1) press mass percent by 22% bauxite, 75% F class II level concrete powder coal ash, 2%Titanium dioxide mixes with 1% blanc fixe, obtains raw material;
2) described raw material is placed in to ball mill, according to ratio of grinding media to material, 1:1 adds high aluminium ball, and ball milling is after 1 hour,Take out 300 mesh standard sieves, obtained the mixed powder that particle diameter is less than 48 μ m;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, the same time-division of granulation three timesAdding mass concentration is 10% sodium silicate aqueous solution, and the quality of described sodium silicate aqueous solution is described mixed powder27% of material, obtains haydite base substrate;
4) described haydite base substrate is placed in to rotary dryer and dries 2.6h at 100 DEG C, then drop into disc typeAutogenous grinding rounding in comminutor, recycling reciprocating sieve sieves it, obtains particle diameter and is distributed in 16～80 objectsRaw material ball;
5) described raw material ball is placed in to kiln and is first warmed up to 600 DEG C with the speed of 5 DEG C/min, then withThe speed of 15 DEG C/min is warmed up to 1370 DEG C, and insulation 60min is cooling with stove, obtains described high volume powderFlyash haydite proppant.
Flyash described in the embodiment of the present invention is F class II level concrete powder described in GB/T1596-2005Coal ash. Described bauxite is that alundum (Al2O3) content is 60～68% bauxite.
The performance of the prepared high-content fly ash ceramsite propping agent of embodiment 1～6 is as shown in table 1.
The ceramsite propping agent performance that table 1 is prepared by specific embodiment
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Bulk density g/cm3 | 1.66 | 1.42 | 1.55 | 1.52 | 1.47 | 1.40 |
| 52MPa percentage of damage | 4.12 | 5.22 | 5.36 | 4.79 | 5.73 | 5.78 |
| Circularity | ＞9 | ＞8 | ＞8 | ＞8 | ＞8 | ＞8 |
| Sphericity | ＞9 | ＞8 | ＞8 | ＞8 | ＞8 | ＞8 |
| Acid solubility | 3.12 | 5.31 | 4.51 | 4.32 | 3.66 | 5.78 |
| Apparent density g/cm3 | 2.94 | 2.57 | 2.77 | 2.76 | 2.71 | 2.51 |
Above data show, by embodiment 1～6, add and account for the prepared haydite of more than 30% flyash of raw materialThe performance indications of proppant reach the oil and gas industry standard SY/T5108-2006 couple of the People's Republic of China (PRC)The requirement of proppant performance.
Claims (6)
1. a preparation method for high-content fly ash ceramsite propping agent, is characterized in that comprising the steps:
1) by the bauxite of 20～65wt%, the flyash of 30～75wt%, the calcite in powder of 0～5wt%,The talcum powder of 0～10wt%, the titanium dioxide of 1～5wt%, the soft flame-proof clay of 0～20wt% and 1～5wt%'sBlanc fixe mixes, and obtains raw material;
2) described raw material is placed in to ball mill and is milled to particle diameter and is less than 48 μ m, obtain mixed powder;
3) described mixed powder is placed in to Hermetical stirring mixer and carries out granulation, when granulation several timesAdding mass concentration is 10% sodium silicate aqueous solution, and the gross mass of described added sodium silicate aqueous solution is9～27% of described mixed powder, obtains haydite base substrate;
4) described haydite base substrate is dried, sieve after being placed in comminutor autogenous grinding rounding, obtain particle diameter and divideCloth is 16～80 object raw material balls;
5) described raw material ball is placed in to heating furnace, is first warmed up to 600～700 DEG C with the speed of 3～5 DEG C/min,Be warmed up to 1350～1500 DEG C with the speed of 10～15 DEG C/min again, insulation 40～120min, cooling with stove,Obtain described high-content fly ash ceramsite propping agent.
2. preparation method as claimed in claim 1, is characterized in that: described bauxite is alundum (Al2O3)Content is 60～68% bauxite.
3. preparation method as claimed in claim 1, is characterized in that: described flyash F class II level coagulationSoil flyash.
4. preparation method as claimed in claim 1, is characterized in that: the base substrate of haydite described in step 4)Furnace drying method be to dry 2～3h under 80～150 DEG C of conditions.
5. preparation method as claimed in claim 1, is characterized in that: the base substrate of haydite described in step 4)Furnace drying method in rotary dryer, carry out.
6. preparation method as claimed in claim 1, is characterized in that: comminutor described in step 4) isPan-type pelletizer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108300453A (en) * | 2017-11-23 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of ceramsite propping agent prepared using industrial residue |
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| CN106277956B (en) * | 2016-07-25 | 2018-05-25 | 广西大学 | A kind of preparation process of geo-polymer fracturing propping agents |
| 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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