CN107011886B - A kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent - Google Patents
A kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent Download PDFInfo
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- CN107011886B CN107011886B CN201710228586.0A CN201710228586A CN107011886B CN 107011886 B CN107011886 B CN 107011886B CN 201710228586 A CN201710228586 A CN 201710228586A CN 107011886 B CN107011886 B CN 107011886B
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- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 58
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 52
- 239000011707 mineral Substances 0.000 title claims abstract description 52
- 238000012545 processing Methods 0.000 title claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 229940095674 pellet product Drugs 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 238000007885 magnetic separation Methods 0.000 claims abstract description 6
- 238000009472 formulation Methods 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 11
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000006148 magnetic separator Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- -1 pre-burning Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent, and in particular to a method of comprehensive utilization mineral processing tailing of bauxite preparation supports Low-density high-intensity ceramsite proppant for oil field well.It is characterized in that the step of its preparation process includes: that mineral processing tailing of bauxite is carried out iron removal by magnetic separation by (1)；(2) it by except selecting tailing to carry out pre-burning after iron, is crushed after additive formulations then are added；(3) material of step (2) is stirred, is granulated, pellet product is made；(4) pellet product dried, be sintered, ceramsite propping agent is made.Method of the invention, production cost is low, compared with using conventional raw material production Low-density high-intensity ceramsite proppant, it can not only realize the efficient utilization of bauxite gangue, the environment during selecting tailings impoundment and security risk is effectively reduced, and low-density high-strength petroleum ceramsite propping agent preparation key technology can be grasped, to realize that the strategic transformation of China's aluminum i ndustry provides technical support.
Description
Technical field
A kind of a kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent, and in particular to comprehensive utilization mineral processing tailing of bauxite
Method of the preparation for oil field well support Low-density high-intensity ceramsite proppant.
Background technique
Petroleum fracturing propping agent (ceramsite propping agent) is logical using bauxite, kaolin, quartz and a small amount of sintering aid
Cross ingredient, fine grinding mixing, balling-up be granulated, most afterwards through granularity made of high temperature sintering 0.4mm~1.2mm spherical ceramic
Grain is mainly used for oil field well support, to increase the yield of petroleum, natural gas.According to national standard, accumulated by ceramsite propping agent
Density can be classified as highly dense (bulk density > 1.80g/cm3), in close (1.66~1.80g/cm of bulk density3), low close (heap
Product 1.45~1.66g/cm of density3) and ultralow close (bulk density < 1.45g/cm3) four classes.
According to incompletely statistics, world oil ceramsite propping agent dosage is quick with every year about 20% growth rate since 2005
Increase.According to market demand analysis, density petroleum haydite production capacity is seriously superfluous in China, and high-density high-strength haydite and low-density high-strength
Petroleum haydite production capacity wretched insufficiency, especially bulk density < 1.60g/cm3Haydite, product demand is vigorous, and domestic market
Yield is extremely limited.Low-density high-intensity ceramsite proppant is for having the advantage that (1) bulk density is low when exploitation of oil-gas field, together
The quality injected in equal volume is few, belongs to energy-saving material；(2) apparent density is low, can suspend, be conducive in the lower mulling liquid of concentration
The configuration of mulling liquid is conducive to pumping when pressure break, can form significantly more efficient flow-guiding channel；(3) oily well yield and use are improved
The time limit, the economic benefit for improving oil well play an important role；(4) intensity is higher, is suitable for most of oil well both at home and abroad.Always
It, low-density petroleum haydite is the important development direction of the recent and following petroleum haydite, is had a good application prospect.
In the ore dressing process of low-grade bauxite, can generate and largely select tailing, select tailing output ratio be generally 25~
40%, and reduced with mill head A/S, tailing yield increases.Mineral processing tailing of bauxite generallys use Tailings Dam storage or solidification heap
The mode of depositing is handled, and not only early period, capital expenditure was huge, but also follow-up management maintenance cost is higher, increases business economic burden,
A large amount of soils are occupied simultaneously, and there are environment and security risks.
Summary of the invention
The purpose of the present invention is aiming at the shortcomings of the prior art, provide a kind of height for being able to achieve bauxite gangue
Effect utilizes, and the environment during selecting tailings impoundment and security risk, the low mineral processing tailing of bauxite preparation of production cost is effectively reduced
The method of ceramsite propping agent.
The purpose of the present invention is achieved through the following technical solutions.
A kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent, it is characterised in that the step of its preparation process includes:
(1) mineral processing tailing of bauxite is subjected to iron removal by magnetic separation；
(2) it by except selecting tailing to carry out pre-burning after iron, is crushed after additive formulations then are added；
(3) material of step (2) is stirred, is granulated, pellet product is made；
(4) pellet product dried, be sintered, low-density and high-strength ceramic proppant is made.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that mineral processing tailing of bauxite
The weight percent content studied point are as follows: Al2O3: 35%~55%；SiO2: 20%~45%；Fe2O3≤ 5.0%；TiO2≤
3.0%；K2O≤1.5%；Na2O≤0.3%；CaO≤0.4%；MgO≤1.0%.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that its step (1) uses
High gradient magnetic separator carries out iron removal by magnetic separation to mineral processing tailing of bauxite, except Fe after iron2O3≤ 1.5%.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that its step (2) it is pre-
Burning temperature is at 700~900 DEG C, and burn-in time is 1~3 hour.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that its step (2) is added
Additive be one of sodium metasilicate, aluminium polychloride, aluminum phosphate, additive amount be raw material gross weight 0.5%-5%.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that its step (2) ingredient
Smashed powder particle size is less than 400 mesh (0.0374mm).
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that through made of granulator
Pellet product partial size is 18~35 mesh (1.00mm~0.50mm).
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that its step (4) general
Grain semi-finished product are dried to moisture content less than 3%.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that the burning of its step (4)
Knot process uses rotary kiln, under 1350 DEG C~1450 DEG C junction temperatures, is sintered 3~5 hours.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, it is characterised in that low-density high-strength pottery is made
The partial size of grain proppant is 20~40 mesh (0.85mm~0.425mm).
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent, is contained largely using bauxite gangue
Clay mineral, granularity is superfine, character is sticky, and alumina content is low, by rationally controlling the Fe in tailing2O3、K2O、Na2O etc. at
Part content, produces the low-density petroleum ceramsite propping agent of high-quality.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent is produced low close using mineral processing tailing of bauxite
On the one hand the efficient utilization of mineral processing tailing of bauxite can be achieved in high-strength ceramic granule propping agent, have significant economic benefit and society's effect
Benefit.On the other hand it grasps low-density high-strength petroleum haydite and prepares key technology, be laid out China's Low Permeability Oil/gas in advance and exploit crucial skill
Art material captures China's Low Permeability Oil/gas mined material preparation commanding elevation, to realize that the strategic transformation of China's aluminum i ndustry provides skill
Art support.
The method that a kind of mineral processing tailing of bauxite of the invention prepares ceramsite propping agent produces low close height with using conventional raw material
Strong ceramsite propping agent compares the efficient utilization, it can be achieved that bauxite gangue, be effectively reduced the environment during selecting tailings impoundment and
Security risk, preparation method is simple, production cost is low, has significant economic benefit and social benefit, and market promotion prospect is good
It is good.
Specific embodiment
A kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent, the mineral processing tailing of bauxite main chemical compositions of use
Weight percent content are as follows: Al2O3: 35~55%；SiO2: 20~45%；Fe2O3≤ 5.0%；TiO2≤ 3.0%；K2O≤
1.5%；Na2O≤0.3%；CaO≤0.4%；MgO≤1.0%.Its preparation process includes raw material except iron, pre-burning, ingredient, powder
Broken, granulation, drying and sintering, main technological steps are as follows: (1) carry out mineral processing tailing of bauxite except iron through high gradient magnetic separator；It is first
First to Fe2O31.5% mineral processing tailing of bauxite of > carries out iron removal by magnetic separation, except low iron product Fe after iron2O3≤ 1.5%.(2) iron will be removed
Afterwards select tailing to carry out pre-burning, except the tailing that selects after iron need to carry out pre-burning 1~3 hour at 700~900 DEG C, then and centainly
It is crushed after the additive formulations of amount；Additive is one of sodium metasilicate, aluminium polychloride, aluminum phosphate, additive amount
It must not exceed the 5% of raw material gross weight；The smashed powder particle size of ingredient is less than 400 mesh (0.0374mm).(3) by step (2)
Material with action of forced stirring granulator complete be granulated, pellet product is made；It is big through pellet product partial size made of granulator
Small is 18~35 mesh (1.00mm~0.50mm).(4) pellet product is sintered in rotary kiln after drying, kiln discharge is cold
But it can be prepared by low-density and high-strength ceramic proppant afterwards, specifically less than 3%, then pellet product be dried to moisture content
Into rotary kiln sintered, sintering temperature is 1350 DEG C~1450 DEG C；Sintering time is 3~5 hours；Low-density high-strength haydite branch is made
The partial size for supportting agent is 20~40 mesh (0.85mm~0.425mm).
The present invention will be further explained with reference to the examples below.
Embodiment 1
Shanxi mineral processing tailing of bauxite, the weight percent content of main chemical compositions are as follows: Al2O3: 38.16%；
SiO2: 44.45%；Fe2O3: 2.80%；TiO2: 1.86%；K2O:0.15%；Na2O:0.05%；CaO:0.14%；MgO:
0.12%.Low-density high-intensity ceramsite proppant, main technological steps are prepared by primary raw material of the mineral processing tailing of bauxite are as follows:
(1) mineral processing tailing of bauxite is carried out through high gradient magnetic separator except iron, except low iron product Fe after iron2O3Content is
1.02%.
(2) it will be carried out at 700 DEG C except the mineral processing tailing of bauxite after iron pre-burning 3 hours, then addition aluminum phosphate, which is used as, adds
Agent is added to carry out ingredient, additive amount is the 4.5% of raw material gross weight, and the smashed powder particle size of ingredient is less than 400 mesh
(0.0374mm)。
(3) by the material of step (2) with action of forced stirring granulator complete be granulated, be made 18~35 mesh (1.00mm~
0.50mm) pellet product；
(4) by pellet product drying to moisture content less than 3%, subsequently into rotary kiln sintered, sintering temperature is
1360 DEG C, sintering time is 5 hours, can be prepared by Low-density high-intensity ceramsite proppant product after kiln discharge is cooling.
Through detecting, product performance index meets the professional standard of national oil natural gas SY/T 5108-2006, is detailed in table
1。
Embodiment 2
Henan mineral processing tailing of bauxite, the weight percent content of main chemical compositions are as follows: Al2O3: 49.80%；
SiO2: 24.65%；Fe2O3: 4.82%；TiO2: 2.82%；K2O:0.26%；Na2O:0.16%；CaO:0.25%；MgO:
0.14%.Low-density high-intensity ceramsite proppant, main technological steps are prepared by primary raw material of the mineral processing tailing of bauxite are as follows:
(1) mineral processing tailing of bauxite is carried out through high gradient magnetic separator except iron, except low iron product Fe after iron2O3Content is
1.42%.
(2) it will be carried out at 800 DEG C pre-burning 2 hours except the mineral processing tailing of bauxite after iron, aluminium polychloride be then added and makees
Ingredient is carried out for additive, additive amount is the 2.5% of raw material gross weight, and the smashed powder particle size of ingredient is less than 400 mesh
(0.0374mm)。
(3) by the material of step (2) with action of forced stirring granulator complete be granulated, be made 18~35 mesh (1.00mm~
0.50mm) pellet product；
(4) by pellet product drying to moisture content less than 3%, subsequently into rotary kiln sintered, sintering temperature is
1450 DEG C, sintering time is 3 hours, can be prepared by Low-density high-intensity ceramsite proppant product after kiln discharge is cooling.
Through detecting, product performance index meets the professional standard of national oil natural gas SY/T 5108-2006, is detailed in table
1。
Embodiment 3
Guizhou mineral processing tailing of bauxite, the weight percent content of main chemical compositions are as follows: Al2O3: 54.78%；
SiO2: 22.11%；Fe2O3: 2.88%；TiO2: 2.75%；K2O:0.38%；Na2O:0.01%；CaO:0.35%；MgO:
0.12%.Low-density high-intensity ceramsite proppant, main technological steps are prepared by primary raw material of the mineral processing tailing of bauxite are as follows:
(1) mineral processing tailing of bauxite is carried out through high gradient magnetic separator except iron, except low iron product Fe after iron2O3Content is
1.22%.
(2) it will be carried out at 900 DEG C pre-burning 1.5 hours except the mineral processing tailing of bauxite after iron, sodium metasilicate conduct be then added
Additive carries out ingredient, and additive amount is the 0.5% of raw material gross weight, and the smashed powder particle size of ingredient is less than 400 mesh
(0.0374mm)。
(3) by the material of step (2) with action of forced stirring granulator complete be granulated, be made 18~35 mesh (1.00mm~
0.50mm) pellet product；
(4) by pellet product drying to moisture content less than 3%, subsequently into rotary kiln sintered, sintering temperature is
1380 DEG C, sintering time is 4 hours, can be prepared by Low-density high-intensity ceramsite proppant product after kiln discharge is cooling.
Through detecting, product performance index meets the professional standard of national oil natural gas SY/T 5108-2006, is detailed in table
1。
1 properties of product testing result of table
Claims (6)
1. a kind of method that mineral processing tailing of bauxite prepares ceramsite propping agent, it is characterised in that the step of its preparation process includes:
(1) mineral processing tailing of bauxite is subjected to iron removal by magnetic separation；
(2) it by except selecting tailing to carry out pre-burning after iron, is crushed after additive formulations then are added；
(3) material of step (2) is stirred, is granulated, pellet product is made；
(4) pellet product dried, be sintered, ceramsite propping agent is made；The weight hundred of mineral processing tailing of bauxite chemical component
Divide and compare content are as follows: Al2O3: 35%~55%；SiO2: 20%~45%；Fe2O3≤ 2.8%；TiO2≤ 3.0%；K2O≤
1.5%；Na2O≤0.3%；CaO≤0.4%；MgO≤1.0%；Step (1) is using high gradient magnetic separator to mineral processing tailing of bauxite
Iron removal by magnetic separation is carried out, except Fe after iron2O3≤ 1.02%；The calcined temperature of step (2) be 700~900 DEG C at, burn-in time be 1~
3 hours；The additive that step (2) is added is one of sodium metasilicate, aluminium polychloride, aluminum phosphate, and additive amount is raw material
The 0.5%-5% of total weight.
2. the method that a kind of mineral processing tailing of bauxite according to claim 1 prepares ceramsite propping agent, it is characterised in that it is walked
Suddenly the smashed powder particle size of (2) ingredient is less than 400 mesh.
3. the method that a kind of mineral processing tailing of bauxite according to claim 1 prepares ceramsite propping agent, it is characterised in that through making
Pellet product partial size made of grain machine is 18~35 mesh.
4. the method that a kind of mineral processing tailing of bauxite according to claim 1 prepares ceramsite propping agent, it is characterised in that it is walked
Suddenly pellet product is dried to moisture content less than 3% by (4).
5. the method that a kind of mineral processing tailing of bauxite according to claim 1 prepares ceramsite propping agent, it is characterised in that it is walked
Suddenly the sintering process of (4) uses rotary kiln, at a temperature of 1350 DEG C~1450 DEG C, is sintered 3~5 hours.
6. the method that a kind of mineral processing tailing of bauxite according to claim 1 prepares ceramsite propping agent, it is characterised in that be made
The partial size of Low-density high-intensity ceramsite proppant is 20~40 mesh.
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