CN102266945A - Ball-milling process and device for iron-based alloy powder - Google Patents
Ball-milling process and device for iron-based alloy powder Download PDFInfo
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- CN102266945A CN102266945A CN2011102393548A CN201110239354A CN102266945A CN 102266945 A CN102266945 A CN 102266945A CN 2011102393548 A CN2011102393548 A CN 2011102393548A CN 201110239354 A CN201110239354 A CN 201110239354A CN 102266945 A CN102266945 A CN 102266945A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000000498 ball milling Methods 0.000 title claims abstract description 110
- 239000000843 powder Substances 0.000 title claims abstract description 78
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 41
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000000463 material Substances 0.000 claims description 44
- 238000005516 engineering process Methods 0.000 claims description 32
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 10
- 239000007858 starting material Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003801 milling Methods 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 2
- 238000009700 powder processing Methods 0.000 abstract 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 6
- 235000012054 meals Nutrition 0.000 description 5
- 239000007921 spray Substances 0.000 description 3
- 238000012387 aerosolization Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009692 water atomization Methods 0.000 description 2
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910002796 Si–Al Inorganic materials 0.000 description 1
- 229910008423 Si—B Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 230000005389 magnetism Effects 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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Abstract
The invention discloses a ball-milling process and a ball-milling device for iron-based alloy powder. The iron content of iron-based alloy powder is more than 80 percent. The ball-milling device comprises a wet ball mill and a centrifugal machine (19), wherein the wet ball mill comprises a motor and speed change device (1), a vertical milling barrel (2), a vertical stirring shaft (3), a machine body (4) and a slurry pump (5); and the iron-based alloy powder is obtained by performing cyclic ball-milling and centrifugal drying on iron-based alloy. The ball-milling process and the ball-milling device has the advantages of changing a discharging mode, reducing manual operation, shortening a feeding and discharging period by 30 to 50 minutes and increasing the team yield by 20 to 50 percent, along with high automation degree and simple operation; the powder processing efficiency is 2 to 5 times higher than the conventional powder processing efficiency; the one-time yield is more than 70 percent; furthermore, as the device can run for over 96 hours continuously, noise and ball-milling power consumption can be reduced; moreover, dust is nearly prevented during working and the power consumption is reduced by 60 to 80 percent, so that the production cost is reduced greatly.
Description
Technical field
The invention belongs to the manufacturing field of metal alloy powders, particularly a kind of ball-milling technology of iron(-)base powder and device, be specifically a kind of be the ball-milling technology and the device of the polynary ferrous alloy wet ball grinding powdered of main component (Fe〉80%) with iron.
Background technology
Ferrous alloy is the big and wide class of use amount in the hard material, the characteristics of this class material maximum are that combination property is good, the scope of application is very wide, and material price is cheap, in the production in modern times, obtained using widely, especially contain Fe〉the soft magnetism ferrous alloy of 80% (wt%), such as emerging in recent years especially soft magnetic materials such as Fe-Si-Al, Fe-Si, Fe-Si-B.
The ferrous alloy of melting manufacturing is manufactured powder, existing flouring technology is divided into two types: a class is to utilize the fragility mechanical crushing of alloy, dry ball milling powder process, and another kind of is with the direct spray powdered of alloy molten steel by atomizing (water atomization, aerosolization and water, gas mixed aerosol).Because the powder morphology of atomizing spray is ball-type or nearly ball-type, and the size distribution of powder is in the majority with corase meal, compactness is poor when causing stamping of powder, is easy to generate eddy-current loss.Wherein, aerosolization powder process cost is too high, and water atomization powder process oxygen content is too high, and this is the deficiency of powder by atomization technology.So the ferrous alloy of fragility often adopts the technology of mechanical crushing, dry ball milling powder process when being used for soft magnetic materials.Its powder mostly is irregular type, helps the compactness of compression molding and compacting magnetic device.
Adopt Mechanical Crushing, the dry ball milling technology that makes powder, existing processes and device roughly have following several:
A, horizontal drum ball mill ball milling make powder.The alloy coarse granule is added the horizontal drum ball mill, and material and steel ball be proportioning by a certain percentage, selects the steel ball of different-diameter for use, and the steel ball size also adds according to a certain ratio.The ball milling time is according to the material of ball milling with to the granularity requirements decision of powder.Steel ball and material are emitted simultaneously during discharging, after sieving steel ball and material are separated, and screening reaches the powder of fineness requirement again.Meal returns ball mill on the sieve.The weak point of this technology and device is: drum rotation speed low (being generally less than 60 rev/mins) causes that production efficiency is low, between discharging and the charging between long, operation of cycle dust many.
B, horizontal vibrator ball milling make powder.The alloy coarse granule is added horizontal vibrator, and material and steel ball be proportioning by a certain percentage, selects the steel ball of different-diameter for use, and the steel ball size also adds according to a certain ratio, and the ball milling time is decided according to the material of ball milling with to the granularity requirements of powder.Steel ball and material need be emitted simultaneously during discharging, after sieving steel ball and material are separated, and screening reaches the powder of fineness requirement again, and meal returns ball mill on the sieve.The vibration frequency of horizontal vibrator caused ball mill and material because of the unsuitable continuous operation of heating fast at 100-300 time/minute.And vibrating noise is big, and discharge method has determined also that dust between operation is many, the cycle between the input and output material is long.
C, airflow milling alloying powder.Principle is: pulverize the blanking of top, storehouse less than 40 purpose alloy meal by grinding machine, be distributed on the tracheae of pulverizing bulkhead and become collision type to spray into pressure-air, the material generation high velocity impact that causes to fall and break is ground into powder.Regulate the classifying turbine frequency and make fine powder be absorbed recovery system by the negative pressure of grinding machine, meal is got back to and is pulverized the storehouse.The advantage of airflow milling is that input and output material is not shut down, can be produced continuously, and powder can be collected by grain size grading, and dust is few between operation, weak point is that output is little, the unit power consumption amount than the high 3-5 of other ball mills doubly.
Summary of the invention
Purpose of the present invention promptly is to overcome the shortcoming of prior art, a kind of ball-milling technology and device of iron(-)base powder are provided, be specifically a kind of be the ball-milling technology and the device of the polynary ferrous alloy wet ball grinding powdered of main component (Fe〉80%) with iron, improve milling efficiency and yield rate, increase class's output, improve operating environment, improve the automaticity of system, reduce noise and production cost.
The objective of the invention is to be achieved through the following technical solutions:
A kind of ball mill device of iron(-)base powder, it comprises ball mill by wet process and centrifuge, described ball mill by wet process comprises motor and speed change gear, vertical mill tube, vertical shaft, body and shurry pump, described body is installed on the vertical mill tube, motor and speed change gear are installed in the top of body, the upper end of vertical shaft is connected the bottom of passing body and extending vertical mill tube with the output of motor and speed change gear, the lower end of vertical shaft is provided with 1 ~ 8 mixing arm, installation relative angle between mixing arm is 60 ~ 90 °, spacing between the mixing arm is not less than 50mm, vertical shaft is concentric and perpendicular to horizontal plane with vertical mill tube, the top of vertical mill tube is provided with feed hopper, slip inlet and ball-milling medium inlet, also be provided with water-cooling jacket on the sidewall of vertical mill tube, the bottom of vertical mill tube is provided with discharge bucket, the logical charge tube of discharge bucket is connected with the feed end of shurry pump, and the discharge end of shurry pump is connected with the slip inlet of centrifuge and ball mill by wet process respectively.
The top of described vertical mill tube also is provided with access hole and observation panel.
The lower end of described water-cooling jacket is provided with import, and the upper end of water-cooling jacket is provided with outlet, and spiral spoiler is installed in the water-cooling jacket.
Described body is made up of support, the bearing and the bearing block that are installed on the support.
The ratio of the internal diameter of described vertical mill tube and height is 1:1 ~ 1.2, and wherein internal diameter is for being not less than 500mm.
A kind of ball-milling technology of iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:0.5 ~ 2.5:0.5 ~ 3 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is less than 2 mm;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, 1 ~ 30 hour ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, after drying particle diameter be 100 ~ 2000 purpose iron(-)base powders.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 30mm.
Described ferrous alloy is for containing Fe〉alloy of 80% (wt%).
The invention has the beneficial effects as follows: 1. above-mentioned milling system automaticity height, easy and simple to handle; 2. said system is a wet ball grinding, compares with existing dry ball milling, and the adding of ball-milling medium has changed discharge method, therefore, has reduced manually-operated, and the input and output material cycle can shorten 30-50 minute, can increase a class output 20-50%; And almost there is not dust between operation; 3. compare with existing dry ball milling technology, this device ball milling principle is more advanced, and slurry forms the circulation ball milling from top to bottom, and milling efficiency exceeds 2-5 doubly, and the one-pass finished rate is up to more than 70%; 4. compare with existing dry ball milling, the heat that ball milling the produces water that is cooled is taken away, and this device can be run without interruption more than 96 hours; 5. existing dry method ball mill needs unsettled could the rotation or vibrate, and support zone is fixing by the basis.Native system ball mill by wet process integral body is positioned over smooth ground, helps changing the position adjustment of equipment room, and mill tube need not motion and also reduced the ball milling power consumption, simultaneously, has reduced mill tube because of rotating the noise that produces with steel ball; 6. compare with the airflow milling flouring technology, power consumption reduces 60-80%, thereby has reduced production cost significantly.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is a vertical view of the present invention
Among the figure, 1-motor and speed change gear, the vertical mill tube of 2-, the vertical shaft of 3-, the 4-body, 5-shurry pump, 6-mixing arm, 7-water-cooling jacket, the 8-discharge bucket, 9-feed hopper, 10-slip inlet, 11-ball-milling medium inlet, 12-access hole, 13-observation panel, the 14-import, 15-outlet, the spiral spoiler of 16-, the 17-support, 18-bearing and bearing block, 19-centrifuge.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:A kind of ball mill device of iron(-)base powder, as Fig. 1, Fig. 2, it comprises ball mill by wet process and centrifuge 19, described ball mill by wet process comprises motor and speed change gear 1, vertical mill tube 2, vertical shaft 3, body 4 and shurry pump 5, described body 4 is installed on the vertical mill tube 2, motor and speed change gear 1 are installed in the top of body 4, the upper end of vertical shaft 3 is connected the bottom of passing body 4 and extending vertical mill tube 2 with the output of motor and speed change gear 1, the lower end of vertical shaft 3 is provided with 1 ~ 8 mixing arm 6, the installation relative angle that mixing arm is 6 is 60 ~ 90 °, spacing between the mixing arm 6 is not less than 50mm, vertical shaft 3 and vertical mill tube 2 are concentric and perpendicular to horizontal plane, the top of vertical mill tube 2 is provided with feed hopper 9, slip inlet 10 and ball-milling medium inlet 11, also be provided with water-cooling jacket 7 on the sidewall of vertical mill tube 2, the bottom of vertical mill tube 2 is provided with discharge bucket 8, discharge bucket 8 logical charge tubes are connected with shurry pump 5 feed ends, and the discharge end of shurry pump 5 is connected with the slip inlet 10 of centrifuge and ball mill by wet process respectively.
The top of described vertical mill tube 2 also is provided with access hole 12 and observation panel 13.
The lower end of described water-cooling jacket 7 is provided with import 14, and the upper end of water-cooling jacket 7 is provided with outlet 15, and spiral spoiler 16 is installed in the water-cooling jacket 7.
Described body 4 is made up of support 17, the bearing and the bearing block 18 that are installed on the support 17.
The ratio of the internal diameter of described vertical mill tube 2 and height is 1:1-1.2, and wherein internal diameter is for being not less than 500mm.
Its groundwork process is as follows: by a certain percentage steel ball, ball-milling medium, material are added ball mill by wet process by feed hopper 9, slip inlet 10 and ball-milling medium inlet 11 respectively, start shurry pump 5, the ball-milling medium that adds is answered the insoluble matter material and is easy to liquid-solid the separation, steel ball adopts the bearing steel that contains chromium, diameter is not less than 4mm, select different diameter proportionings as requested, the ball milling time is decided according to the material of ball milling with to the granularity requirements of powder.Open motor and speed change gear 1, the vertical shaft 3 that motor and speed change gear 1 drive drives mixing arm 6 and does to rotate synchronously, drive steel ball, material and ball-milling medium by mixing arm 6 and do the circumference rotation, steel ball forms the movement of falling object because of the gravity effect, the kinetic energy of two kinds of motion formation and potential energy make steel ball produce impulsive force and shearing force, thereby material is pulverized, and shurry pump 5 makes slip extract out from above-mentioned wet ball grinding motor spindle and gets back to end entrance formation circulation on the ball mill by wet process.When material passes through the steel ball of 2 li of vertical mill tubes from top to bottom at every turn, all by steel ball repeated stock layer by layer and shearing and the ball milling powdered.The heat that ball milling produces is taken away by the cooling water of chuck, and the discharge end of shurry pump 5 is connected with the slip inlet 10 of centrifuge 19 and ball mill by wet process respectively.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 85%Fe-9.6%Si-5.4%Al iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:1:1.5 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 1.5mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 1 hour ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be-100 purpose iron(-)base powders.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 12mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table one:
Table one: the technological parameter of the ball-milling technology of iron(-)base powder and test data one
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <1.5 | 100（0.15mm） | ? ?1 | 200 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 150 | ?110.6 | ?73.73.4 | 3.4 g/ |
Embodiment 2:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 85%Fe-9.6%Si-5.4%Al iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:0.8:1.2 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 1.2mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1.1;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 1.2 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be-200 purpose iron(-)base powders.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 8 ~ 20mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table two:
Table two: the technological parameter of the ball-milling technology of iron(-)base powder and test data two
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <1.2 | 200（0.075mm） | 1.2 | 160 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 300 | 243.8 | 81.27 | 3.2 g/ |
Embodiment 3:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 83.7%Fe-7.8%Si-4.4%Al-4.1%Sb iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:1:1.2 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 1 mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 30 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be-2000 purpose iron(-)base powders.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 15mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table three:
Table three: the technological parameter of the ball-milling technology of iron(-)base powder and test data three
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <1 | 2000（0.007mm） | ? 30 | 2800 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 120 | 116.6 | 97.17 | 0.8g/ |
Embodiment 4:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 84.6%Fe-6.8%Si-4.4%Al-4.2%Sb iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:1:0.5 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 0.8mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1.2;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 1.5 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be-150 purpose iron(-)base powders.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 12mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table four:
Table four: the technological parameter of the ball-milling technology of iron(-)base powder and test data four
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <0.8 | 150（0.1mm） | 1.5 | 260 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 180 | 175.8 | ?86.18 | 3.3g/ |
Embodiment 5:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 85%Fe-9.5%Si-5.5%Al iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:2.5:2 adds in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 1 .4mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1.05;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 9 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be that-1500 orders, apparent density are the iron(-)base powder of 1.2g/.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 12 ~ 30mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table five:
Table five: the technological parameter of the ball-milling technology of iron(-)base powder and test data five
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <1.4 | 1500（0.01mm） | 9 | 2500 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 140 | ?138.2 | 92.17 | 1.2g/ |
Embodiment 6:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 84%Fe-9.5%Si-6.5%Al iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:2:3 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 1 .3mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1.15;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 8.5 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be that-1200 orders, apparent density are the iron(-)base powder of 1.8g/.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 15mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table six:
Table six: the technological parameter of the ball-milling technology of iron(-)base powder and test data six
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <0.5 | 1200（0.02mm） | ?8.5 | 2400 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 120 | 118.2 | 87.13 | 1.8g/ |
Embodiment 7:A kind of ball mill device structure of iron(-)base powder is with embodiment 1.
A kind of ball-milling technology of iron(-)base powder, particularly for ball milling contains the 84.5%Fe-9.0%Si-6.5%Al iron(-)base powder, it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:0.5:1 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is 0.6mm, and wherein, the ratio of the internal diameter of the vertical mill tube of ball mill by wet process and height is 1:1.2;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, the 18 hours ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back granularity be that-1800 orders, apparent density are the iron(-)base powder of 0.9g/.
Described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 12mm.
Described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
Its technological parameter and test data such as table seven:
Table seven: the technological parameter of the ball-milling technology of iron(-)base powder and test data seven
| Charging particle diameter (mm) | Discharging-material size (sieve mesh) | The ball milling time (hour) | Power consumption (degree/ton) |
| <0.6 | 1800（0.005mm） | ?18 | 3400 |
| Drop into material (kg) | Finished weight (kg) | Yield rate (%) | Apparent density |
| 150 | 146.7 | 93.16 | 0.9g/ |
Claims (9)
1. the ball mill device of an iron(-)base powder, it is characterized in that: it comprises ball mill by wet process and centrifuge (19), described ball mill by wet process comprises motor and speed change gear (1), vertical mill tube (2), vertical shaft (3), body (4) and shurry pump (5), described body (4) is installed on the vertical mill tube (2), motor and speed change gear (1) are installed in the top of body (4), the upper end of vertical shaft (3) is connected the bottom of passing body (4) and extending vertical mill tube (2) with the output of motor and speed change gear (1), the lower end of vertical shaft (3) is provided with 1 ~ 8 mixing arm (6), installation relative angle between mixing arm (6) is 60 ~ 90 °, spacing between the mixing arm (6) is not less than 50mm, vertical shaft (3) is concentric and perpendicular to horizontal plane with vertical mill tube (2), the top of vertical mill tube (2) is provided with feed hopper (9), slip inlet (10) and ball-milling medium inlet (11), also be provided with water-cooling jacket (7) on the sidewall of vertical mill tube (2), the bottom of vertical mill tube (2) is provided with discharge bucket (8), the logical charge tube of discharge bucket (8) is connected with shurry pump (5) feed end, and the discharge end of shurry pump (5) is connected with the slip inlet (10) of centrifuge and ball mill by wet process respectively.
2. the ball mill device of a kind of iron(-)base powder according to claim 1, it is characterized in that: the top of described vertical mill tube (2) also is provided with access hole (12) and observation panel (13).
3. the ball mill device of a kind of iron(-)base powder according to claim 1, it is characterized in that: the lower end of described water-cooling jacket (7) is provided with import (14), the upper end of water-cooling jacket (7) is provided with outlet (15), and spiral spoiler (16) is installed in the water-cooling jacket (7).
4. the ball mill device of a kind of iron(-)base powder according to claim 1 is characterized in that: described body (4) is made up of support (17), the bearing and the bearing block (18) that are installed on the support (17).
5. the ball mill device of a kind of iron(-)base powder according to claim 1 is characterized in that: the ratio of the internal diameter of described vertical mill tube (2) and height is 1:1 ~ 1.2, and wherein internal diameter is for being not less than 500mm.
6. the ball-milling technology of an iron(-)base powder, it is characterized in that: it comprises following steps:
(1) be that steel ball, ball-milling medium, the ferrous alloy of 10:0.5 ~ 2.5:0.5 ~ 3 adds respectively in the aforesaid ball mill by wet process with weight ratio, ferrous alloy charging particle diameter is less than 2 mm;
(2) starter motor, variable frequency adjustment agitator shaft speed (shaft also can be assembled into constant rotational speed by motor and gearbox);
(3) start shurry pump, make slurry form the circulation ball milling from top to bottom, 1 ~ 30 hour ball milling time of control,
(4) start centrifuge and carry out liquid-solid separation, dry back particle diameter be 100 ~ 2000 purpose iron(-)base powders.
7. the ball-milling technology of a kind of iron(-)base powder according to claim 6 is characterized in that: described steel ball adopts the bearing steel that contains chromium, and diameter is 6 ~ 30mm.
8. the ball-milling technology of a kind of iron(-)base powder according to claim 6, it is characterized in that: described ball-milling medium is insoluble matter material and the liquid state organics that is easy to liquid-solid separation.
9. the ball-milling technology of a kind of iron(-)base powder according to claim 6 is characterized in that: described ferrous alloy is for containing Fe〉alloy of 80% (wt%).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102393548A CN102266945A (en) | 2011-08-20 | 2011-08-20 | Ball-milling process and device for iron-based alloy powder |
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| CN2011102393548A CN102266945A (en) | 2011-08-20 | 2011-08-20 | Ball-milling process and device for iron-based alloy powder |
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| CN2011102393548A Pending CN102266945A (en) | 2011-08-20 | 2011-08-20 | Ball-milling process and device for iron-based alloy powder |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632243A (en) * | 2012-05-02 | 2012-08-15 | 江苏大学 | Ball milling pot with agitation function for preparing micro-nano composite powder |
| CN103357867A (en) * | 2013-07-31 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | A kind of scaly multi-element aluminum-zinc-silicon alloy powder and preparation method thereof |
| CN103357868A (en) * | 2013-07-31 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | Scale multi-element aluminum-zinc-silicon alloy powder containing La, Ce, Pr and Nd and preparation method thereof |
| CN103409662A (en) * | 2013-07-31 | 2013-11-27 | 江苏麟龙新材料股份有限公司 | Scale multi-element aluminum-zinc-silicon alloy powder containing Ce and Nd and preparation method thereof |
| CN103433481A (en) * | 2013-07-31 | 2013-12-11 | 江苏麟龙新材料股份有限公司 | Containing La, Ce and Pr flake multi-element aluminum-zinc-silicon alloy powder and its preparation method |
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| CN102632243A (en) * | 2012-05-02 | 2012-08-15 | 江苏大学 | Ball milling pot with agitation function for preparing micro-nano composite powder |
| CN103357867A (en) * | 2013-07-31 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | A kind of scaly multi-element aluminum-zinc-silicon alloy powder and preparation method thereof |
| CN103357868A (en) * | 2013-07-31 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | Scale multi-element aluminum-zinc-silicon alloy powder containing La, Ce, Pr and Nd and preparation method thereof |
| CN103409662A (en) * | 2013-07-31 | 2013-11-27 | 江苏麟龙新材料股份有限公司 | Scale multi-element aluminum-zinc-silicon alloy powder containing Ce and Nd and preparation method thereof |
| CN103433481A (en) * | 2013-07-31 | 2013-12-11 | 江苏麟龙新材料股份有限公司 | Containing La, Ce and Pr flake multi-element aluminum-zinc-silicon alloy powder and its preparation method |
| CN103357867B (en) * | 2013-07-31 | 2015-08-26 | 江苏麟龙新材料股份有限公司 | Flaky multi-element aluminum-zinc-silicon alloy powder and preparation method thereof |
| CN103357868B (en) * | 2013-07-31 | 2016-03-02 | 江苏麟龙新材料股份有限公司 | Scale-like multi-element aluminum-zinc-silicon alloy powder containing La, Ce, Pr and Nd and preparation method thereof |
| CN103951437A (en) * | 2013-10-17 | 2014-07-30 | 上海步进精密陶瓷有限公司 | Silicon nitride ceramic bearing ball with ultralow porosity and manufacture method thereof |
| CN103951437B (en) * | 2013-10-17 | 2016-01-20 | 上海步进精密陶瓷有限公司 | Ultralow-porosity silicon nitride ceramics bearing ball and manufacture method thereof |
| CN118492378A (en) * | 2024-07-22 | 2024-08-16 | 四川力扬工业有限公司 | Lead powder preparation device |
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Application publication date: 20111207 |