CN104474970A - Ceramsite sand green ball and preparation method thereof - Google Patents
Ceramsite sand green ball and preparation method thereof Download PDFInfo
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- CN104474970A CN104474970A CN201410717867.9A CN201410717867A CN104474970A CN 104474970 A CN104474970 A CN 104474970A CN 201410717867 A CN201410717867 A CN 201410717867A CN 104474970 A CN104474970 A CN 104474970A
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- ceramsite sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
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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
Abstract
The invention discloses a ceramsite sand green ball and a preparation method thereof, belonging to the technical field of oil exploitation, and solving the problems of poor roundness and sphericity and low product yield existing during ceramsite sand granulation by utilizing an automatic granulator in the prior art. The method for preparing the ceramsite sand green ball comprises the following steps: step 1. mixing granulation raw materials by using the granulator, mixing the granulation raw materials with water, thereby obtaining a mixture; step 2. balling the mixture, wherein the balling step at least comprises two stages, and the rotating speed of a rotor at the later stage is lower than the rotating speed of a rotor of the previous stage adjacent to the later stage; and step 3. discharging the obtained ceramsite sand after the balling step is finished. Preferentially, the balling step comprises three steps, namely the rotating speed of the rotor is the highest rotating speed, and the operating time is 90-140 seconds; the rotating speed of the rotor is 70-80 percent of the highest rotating speed, and the operating time is 290-400 seconds; and the rotating speed of the rotor is 40-55 percent of the highest rotating speed, and the operating time is 100-180 seconds.
Description
Technical field
The invention belongs to technical field of petroleum extraction, particularly relate to a kind of preparation method of ceramsite sand blastocyte, and with the ceramsite sand prepared by the method.
Background technology
Ceramsite sand, be exactly the particle of ceramic, thinner is referred to as sand, has another name called petroleum fracturing propping agent.Rounded or the oval-shaped ball of ceramsite sand major part, but also have some imitative rubble haydites to be irregular rubble shape.
Conventional pelletizing equipment is " sugar-coat " machine; by water, powder during preparation; adding of continuity, small lot; single-deck granulation time more than 4 hours, the rotating disk rolling completely by comminutor obtains spherical shape granule, and its shortcoming is that granulation required time is long, qualification rate is low, artifical influence factor is large; work under bad environment; inefficiency, yields poorly, and is difficult to meet the demand of petroleum industry to ceramsite sand.
The automaticity of automatic granulator is high; by powder, water is disposable adds in comminutor; comminutor rotor keeps maximum speed in granulation process; by the rotating disk gradient of comminutor and the effect of inner rotator; within a short period of time (within 15 minutes) forms spherical shape granule, i.e. ceramsite sand blastocyte, and its advantage is that the balling-up time is short, easy to operate; its shortcoming is that circularity, sphericity are poor, and product percent of pass is low.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of preparation method of ceramsite sand blastocyte, main purpose be solve in prior art utilize automatic granulator to carry out the circularity of ceramsite sand granulation existence, sphericity is poor, the problem that product percent of pass is low.The present invention also provides with the ceramsite sand prepared by the method.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
On the one hand, embodiments provide a kind of preparation method of ceramsite sand blastocyte, described method comprises:
Step 1, uses comminutor to puddle granulating raw material, is then mixed with water by granulating raw material, obtain compound;
Step 2, utilizes the compound balling-up that comminutor obtains step 1, and described balling-up at least comprises two stages, and the rotor speed of the latter half is lower than the rotor speed of previous stage adjacent with it;
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition.
The preparation method of ceramsite sand blastocyte as above, further, step 2, to the compound balling-up that step 1 obtains, described balling-up comprises two stages:
In the stage 1, rotor speed is maximum speed, running time 150 ~ 200s;
In the stage 2, rotor speed is 40 ~ 55% of maximum speed, running time 500 ~ 600s.
The preparation method of ceramsite sand blastocyte as above, further, step 2, to the compound balling-up that step 1 obtains, described balling-up comprises three phases:
In the stage 1, rotor speed is maximum speed, running time 90 ~ 140s;
In the stage 2, rotor speed is 70 ~ 80% of maximum speed, running time 290 ~ 400s;
In the stage 3, rotor speed is 40 ~ 55% of maximum speed, running time 100 ~ 180s.
The preparation method of ceramsite sand blastocyte as above, further, step 1 puddle process before, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material.Preferably, the milling time of step 1 is 30 minutes.
The preparation method of ceramsite sand blastocyte as above, further, in step 1, the weight ratio of water and granulating raw material is 135 ~ 155:1000.Under the effect of comminutor, form the process of ball, if moisture is too low, a lot of powder can be made can not to obtain moisture content and form and ask, if moisture is excessive, mixed powder can be made to become mud.
The preparation method of ceramsite sand blastocyte as above, further, fineness >=600 order of described granulating raw material.
The preparation method of ceramsite sand blastocyte as above, further, described comminutor is the model that German Ai Lixu company produces is the comminutor of 90L/4/2D-11.
According to the ceramsite sand prepared by the preparation method of as above any one ceramsite sand blastocyte.
Compared with prior art, beneficial effect of the present invention is:
Join powder not all in powder divide water resource equally when water is disposable; but the sub-fraction water obtaining moisture content many first forms microparticle; remaining powder still exists with the state of powder; microparticle constantly overturns under the effect of rotor; microparticle obtains powder and makes oneself constantly to grow up; and powder is also reduced gradually along with constantly absorbing, finally form ceramsite sand.
The number of times that microparticle is reversed within the unit interval is long faster of microparticle the more; if along with the spinner velocity of growing up of microparticle is still very high; particle can affect circularity and sphericity because of increasing too fast on the one hand; make particle size excessive because grain growth is too fast on the other hand, cause single pot of qualification rate to reduce.
The balling-up of side of the present invention comprises at least two successive stages, and the rotor speed of every one-phase reduces gradually, avoid the circularity that causes because rotor speed is too fast in microparticle growth process and sphericity poor, the problem that single pot of qualification rate reduces.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but not as a limitation of the invention.
It is 600 orders that granulating raw material fineness used in following examples reaches, its formula is: by weight ratio, comprise light-burned bauxite (64%), light-burned clay (32%), modified clay (3%), bonding agent (1%).
Ceramsite sand criterion of acceptability: granulation specification is 20/40 single specification, and qualified specification is the particle between-18/+30, circularity >=0.8, sphericity >=0.8.
The comminutor that the model that the comminutor used is produced for German Ai Lixu company is 90L/4/2D-11.
Embodiment 1
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 1200s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 138:1000, and comminutor rotor speed is set as maximum speed, and namely rotating speed is 100%, continues 20s.
Step 2, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 200s;
In the stage 2, rotor speed is 55% of maximum speed, running time 500s.
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 1950s running time.
Embodiment 2
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 1200s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 145:1000, comminutor rotor speed 100%, continues 20s.
Step 2, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 180s;
In the stage 2, rotor speed is 50% of maximum speed, running time 550s.
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 1980s running time.
Embodiment 3
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 1200s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 155:1000, comminutor rotor speed 100%, continues 20s.
Step 2, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 150s;
In the stage 2, rotor speed is 40% of maximum speed, running time 600s.
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 2000s running time.
Embodiment 4
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 1200s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 138:1000, comminutor rotor speed 100%, continues 20s.
Step 2, utilizes comminutor to granulating raw material balling-up, and described balling-up rotor speed is maximum speed, running time 400s;
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 1650s running time.
Embodiment 5
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 138:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 140s;
In the stage 2, rotor speed is 75% of maximum speed, running time 320s;
In the stage 3, rotor speed is 55% of maximum speed, running time 100s.
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 630s running time.Due to before granulating raw material is loaded comminutor; ball mill is used to carry out grinding and pre-homogenizing to granulating raw material; both the perfect homogenizing of raw material; turn increase the fine grinding time; helpful to raising ceramsite sand half-finished circularity, sphericity; shorten single-deck granulation time (next dish granulating raw material can be ground during this dish of granulation) in addition, reduce the loss of automatic granulating machine equipment.
Embodiment 6
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 145:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 120s;
In the stage 2, rotor speed is 75% of maximum speed, running time 300s;
In the stage 3, rotor speed is 50% of maximum speed, running time 120s.
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 610s running time.
Embodiment 7
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 155:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 100s;
In the stage 2, rotor speed is 75% of maximum speed, running time 330s;
In the stage 3, rotor speed is 50% of maximum speed, running time 150s.
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 650s running time.
Embodiment 8
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 155:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 90s;
In the stage 2, rotor speed is 70% of maximum speed, running time 400s;
In the stage 3, rotor speed is 50% of maximum speed, running time 120s.
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 680s running time.
Embodiment 9
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 155:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up comprises 2 stages,
In the stage 1, rotor speed is maximum speed, running time 100s;
In the stage 2, rotor speed is 80% of maximum speed, running time 290s;
In the stage 3, rotor speed is 40% of maximum speed, running time 180s.
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 640s running time.
Embodiment 10
The preparation method of ceramsite sand blastocyte, comprises the following steps:
Step 1, utilize ball mill to carry out grinding and pre-homogenizing to granulating raw material, milling time is 30 minutes.
Step 2, uses comminutor to puddle 5kg granulating raw material, comminutor rotor speed 100%, continues 20s; Then mixed with water by granulating raw material, the weight ratio of water and granulating raw material is 138:1000, comminutor rotor speed 100%, continues 20s.
Step 3, utilizes comminutor to granulating raw material balling-up, and described balling-up rotor speed is maximum speed, running time 400s;
Step 4, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition, comminutor rotor speed 50%, continues 30s.
Single-deck adds up to 470s running time.
Detect the ceramsite sand obtained by embodiment 1-10, testing result is as following table:
| Embodiment | Qualification rate (%) | Circularity | Sphericity |
| - | - | Be not less than 0.8 | Be not less than 0.8 |
| 1 | 60 | 0.78 | 0.80 |
| 2 | 52 | 0.79 | 0.75 |
| 3 | 54 | 0.8 | 0.74 |
| 4 | 43 | 0.79 | 0.75 |
| 5 | 60 | 0.81 | 0.85 |
| 6 | 59 | 0.83 | 0.83 |
| 7 | 60 | 0.84 | 0.82 |
| 8 | 59 | 0.85 | 0.82 |
| 9 | 61 | 0.82 | 0.87 |
| 10 | 46 | 0.76 | 0.78 |
Can be shown by the data of embodiment and upper table, utilize ceramsite sand preparation method of the present invention to have product percent of pass high, the advantage that circularity, sphericity are good.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (9)
1. a preparation method for ceramsite sand blastocyte, is characterized in that, described method comprises:
Step 1, uses comminutor to puddle granulating raw material, is then mixed with water by granulating raw material, obtain compound;
Step 2, carries out balling-up to described compound, and described balling-up at least comprises two stages, and the rotor speed of the latter half is lower than the rotor speed of previous stage adjacent with it;
Step 3, after completing balling-up, takes the dish out of the pot the ceramsite sand of acquisition.
2. the preparation method of ceramsite sand blastocyte according to claim 1, is characterized in that, described balling-up comprises following two stages:
In the stage 1, rotor speed is maximum speed, running time 150 ~ 200s;
In the stage 2, rotor speed is 40 ~ 55% of maximum speed, running time 500 ~ 600s.
3. the preparation method of ceramsite sand blastocyte according to claim 1, is characterized in that, described balling-up comprises three phases:
In the stage 1, rotor speed is maximum speed, running time 90 ~ 140s;
In the stage 2, rotor speed is 70 ~ 80% of maximum speed, running time 290 ~ 400s;
In the stage 3, rotor speed is 40 ~ 55% of maximum speed, running time 100 ~ 180s.
4. the preparation method of the ceramsite sand blastocyte according to any one of claim 1-3, is characterized in that, before described step 1, also comprises and utilizes ball mill to carry out grinding and pre-homogenizing to granulating raw material.
5. the preparation method of ceramsite sand blastocyte according to claim 4, is characterized in that, described milling time is 30min.
6. the ceramsite sand preparation method according to any one of claim 1-3, is characterized in that, in step 1, the weight ratio of water and granulating raw material is 135 ~ 155:1000.
7. the preparation method of the ceramsite sand blastocyte according to any one of claim 1-3, is characterized in that, fineness >=600 order of granulating raw material described in step 1.
8. the preparation method of the ceramsite sand blastocyte according to any one of claim 1-3, is characterized in that, described comminutor is the model that German Ai Lixu company produces is the comminutor of 90L/4/2D-11.
9. a ceramsite sand, is characterized in that, the preparation method of the ceramsite sand blastocyte according to any one of claim 1-8 makes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364763A (en) * | 2022-08-23 | 2022-11-22 | 武汉水木弘新材料有限公司 | Preparation method and application of high-yield spherical particles |
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| US4413970A (en) * | 1981-02-27 | 1983-11-08 | Owens-Corning Fiberglas Corporation | Rotary scrapers |
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| CN115364763A (en) * | 2022-08-23 | 2022-11-22 | 武汉水木弘新材料有限公司 | Preparation method and application of high-yield spherical particles |
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