CN217989497U - Preparation low moisture ball-milling device of high grinding efficiency for calcium carbonate - Google Patents
Preparation low moisture ball-milling device of high grinding efficiency for calcium carbonate Download PDFInfo
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- CN217989497U CN217989497U CN202221405435.0U CN202221405435U CN217989497U CN 217989497 U CN217989497 U CN 217989497U CN 202221405435 U CN202221405435 U CN 202221405435U CN 217989497 U CN217989497 U CN 217989497U
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Abstract
The utility model provides a preparation low moisture is ball-milling device of high grinding efficiency for calcium carbonate, includes feed bin (1), band conveyer (2), first spiral reamer conveyer (3), grinding aid bucket (4), air heater (5), ball mill feed inlet (6), ball-milling bucket (7), zirconia ceramic ball (8), grader (9), second spiral reamer conveyer (10), gear wheel (11), pinion (12), motor (13), pulse bag dust collector (14), draught fan (15) and base (16). The ball mill of the utility model has high grinding efficiency, and certain water and grinding aid are added under the grinding action of the grinding medium zirconia ceramic balls with high specific gravity, so that the grinding efficiency of the ball mill can be further improved; the utility model discloses the calcium carbonate powder whiteness degree of device preparation is high, and material moisture content is low.
Description
Technical Field
The utility model relates to a preparation low moisture is ball-milling device of high grinding efficiency for calcium carbonate belongs to nonmetal powder processing technology field.
Background
The ball mill is composed of a horizontal cylinder body, a feeding and discharging hollow shaft, a grinding head and the like, wherein the cylinder body is a long cylinder, and a grinding body is arranged in the cylinder and is commonly used for processing nonmetal powder. The principle of the ball mill is that when a ball mill cylinder rotates, grinding media in the cylinder are attached to a cylinder lining plate by the action of inertia, centrifugal force and friction force and are taken away by the cylinder, when the cylinder is taken to a certain height, the grinding media are thrown off by the action of gravity of the cylinder, the falling grinding media crush materials in the cylinder like a projectile, and meanwhile, in the rotation process of the ball mill, the mutual sliding motion of the grinding media also generates a grinding effect on raw materials.
The powder prepared by the ball mill has high fine powder content and stable product quality, and is widely applied to the superfine processing of calcium carbonate. Generally, the crushing, grinding and heating of grinding media in a ball mill and the calcium carbonate powder under the high-speed wind of a draught fan can control lower moisture. However, the ball mill has high energy consumption, and in order to improve the grinding efficiency and yield of the ball mill, certain water and grinding aids can be added to the feed inlet of the ball mill to aid grinding, but the negative effect generated at the same time is that the moisture content of the prepared superfine calcium carbonate powder is high, and the downstream application effect of calcium carbonate is influenced.
Disclosure of Invention
The utility model aims at solving the problem of high moisture content of the superfine calcium carbonate powder, developing a ball milling device with high grinding efficiency for preparing low-moisture calcium carbonate.
The utility model discloses the technical scheme who realizes as follows, a preparation low moisture is ball-milling device of high grinding efficiency for calcium carbonate, including ball mill, feed bin, band conveyer, spiral reamer conveyer, grinding aid bucket, air-heater, grader and pulse bag dust remover. The belt conveyor conveys materials into a first spiral reamer conveyor from a storage bin; two feed inlets are formed in the upper portion of the first spiral reamer conveyor, one feed inlet is connected with the discharge end of the classifier through the second spiral reamer conveyor, and coarse particles screened by the classifier are conveyed into the first spiral reamer conveyor again; the other feed inlet is connected with a grinding aid barrel through a hose, and the grinding aid in the grinding aid barrel is conveyed through a diaphragm pump and sprayed onto materials in a spiral reamer conveyor; the discharge hole of the first spiral reamer conveyor is connected with the feed inlet of the ball mill; the hot air outlet pipeline of the hot air blower provides hot air for the ball mill through a feed port of the ball mill; the discharge end of the ball mill is connected with a classifier through a pipeline.
The ball mill is of a horizontal two-bin structure, and a grate plate is arranged between the front bin and the rear bin; zirconia ceramic balls with different diameters of 30-50mm are placed in the front bin, and zirconia ceramic balls with different diameters of 10-30mm are placed in the rear bin. The grate plate is distributed with a plurality of pores, and only materials reaching a certain fineness can pass through the pores.
The rear end of the ball mill is provided with a bull gear; the big gear is connected with a motor through a small gear; the motor is electrified to drive the pinion and the bull gear to rotate, so that the ball mill barrel rotates clockwise at a constant speed.
A grading wheel rotating at high speed is arranged in the grading machine to screen the powder; the fine powder reaching the fineness enters a pulse bag dust collector through a grading wheel; screening off unqualified powder, and conveying the powder into the first spiral conveyor again through the second spiral reamer conveyor; the pulse bag-type dust collector is connected with a large draught fan through an air pipe, and a packing machine is arranged at a discharge port at the bottom.
The hot air blower consists of a blower, a heater and a control circuit; the blower sends out air heated by the heater; the control circuit controls the working states of the blower and the heater.
The utility model has the advantages that the grinding efficiency of the ball mill can be further improved by adding certain moisture and grinding aid under the grinding action of the high specific gravity grinding medium zirconia ceramic balls; the utility model discloses the calcium carbonate powder whiteness degree that the device prepared is high, material moisture content is low, this is because the zirconia ceramic ball hardness of adoption is big, can not bring bad impurity such as iron fillings, and makes calcium carbonate powder dry fast because of the hot-blast messenger that the air heater introduced, material moisture content is low.
Drawings
FIG. 1 is a schematic diagram of a high grinding efficiency ball milling apparatus for preparing low moisture calcium carbonate;
in the figure, 1 is a storage bin; 2 is a belt conveyor; 3 is a first helical reamer conveyor; 4 is a grinding aid bucket; 5 is a hot air blower; 6 is a feed inlet of the ball mill; 7 is a ball mill cylinder; 8 is a zirconia ceramic ball; 9 is a classifier; 10 is a second helical reamer conveyor; 11 is a bull gear; 12 is a pinion gear; 13 is a motor; 14 is a pulse bag dust collector; 15 is a draught fan; and 16 is a stand.
Detailed Description
The specific embodiment of the present invention is shown in fig. 1.
The embodiment provides a preparation low moisture ball-milling device of high grinding efficiency for calcium carbonate, including feed bin 1, band conveyer 2, first spiral reamer conveyer 3, grinding aid bucket 4, air heater 5, ball mill feed inlet 6, ball-milling bucket 7, zirconia ceramic ball 8, grader 9, second spiral reamer conveyer 10, gear wheel 11, pinion 12, motor 13, pulse bag dust remover 14, draught fan 15 and base 16.
In the embodiment, calcium carbonate materials crushed by a jaw crusher and a hammer crusher are filled in a storage bin 1; the belt conveyor 2 conveys the material from the silo 1 into a first helical reamer conveyor 3.
The first spiral reamer conveyor 3 of the embodiment is provided with two feed inlets, one feed inlet is connected with the classifier 9 through the second spiral reamer conveyor 10, and coarse particles screened by the classifier 9 can be conveyed into the first spiral reamer conveyor 3 again; the other feed inlet is connected with a grinding aid barrel 4 through a hose, and the grinding aid in the grinding aid barrel 4 is conveyed through a diaphragm pump and sprayed onto the material in the first spiral reamer conveyor 3.
The grinding aid bucket 4 of this example is filled with grinding aid and water in a certain ratio. The first spiral reamer conveyor 3 conveys the material mixed with the grinding aid and the water to a feed port 6 of the ball mill; the feed inlet 6 of the ball mill is connected with the air heater 5 through an air pipe.
The hot air blower 5 of the embodiment is composed of three parts, namely a blower, a heater and a control circuit, and can heat and convey air into the ball mill barrel 7.
The ball mill 7 of the embodiment has a horizontal two-bin structure, and the barrel body is 7500mm long and 2000mm in diameter; the front bin is provided with a zirconia ceramic ball with a large diameter, and the specific gravity of the zirconia ceramic ball is 6.0g/cm 3 The diameter is 30-50mm, the filling rate is 43-45%, and the material is further crushed; the proportion of the zirconia ceramic balls in the rear bin is 6.0g/cm, the diameters are different from 10 mm to 30mm, the filling rate is 43 to 45 percent, and the zirconia ceramic balls mainly play a role in grinding fine powder; a grate plate is arranged between the front bin and the rear bin, a plurality of fine holes are formed in the grate plate, and only materials with certain fineness in the front bin can enter the rear bin through the fine holes.
The rear end of the ball mill 7 of the embodiment is provided with a big gear 11, and the big gear 11 is connected with a motor 13 through a small gear 12; the motor 13 is electrified to rotate to drive the pinion gear 12 and the bull gear 11 to rotate, so that the ball mill cylinder 7 rotates clockwise at a constant speed of 21.7r/min.
The ball mill 7 of the present embodiment is mounted on the bases 16 at both ends by bearings on the rotating shaft.
The powder in the ball mill of this embodiment is conveyed to the classifier 9 under the negative pressure of the induced draft fan 15; the powder is screened by a high-speed rotating grading wheel in the grader 9, fine powder reaching the fineness enters a pulse bag dust collector 14 through the grading wheel, and the powder which does not reach the standard is screened and then is conveyed into the first spiral reamer conveyor 3 again through the second spiral reamer conveyor 10; the pulse bag-type dust collector 14 is connected with a large-scale draught fan 15 through an air pipe, and a packing machine is arranged at a discharge port at the bottom.
The process flow of the embodiment is as follows: the material in the storage bin 1 is conveyed into a first spiral reamer conveyor 3 through a belt conveyor 2; the first spiral reamer conveyor 3 conveys the materials, the grinding aid conveyed from the aid barrel, water and the returned materials screened out by the classifier 9 into the ball mill barrel 7; the cylinder 7 of the ball mill rotating at a constant speed drives zirconia ceramic balls 8 in the cylinder to crush and grind materials in the cylinder, and the ground materials are conveyed to a classifier 9 for screening and classification under the action of negative pressure of an induced draft fan 15; drying the powder by hot air of the hot air blower 5 and heat generated by grinding; the coarse powder is sieved by the classifier 9 and then is conveyed into the first spiral reamer conveyor 3 again by the second spiral reamer conveyor 10, and the fine powder enters the pulse bag dust collector 14 through the classifier 9 and then is packed into a product.
Claims (6)
1. A high-grinding-efficiency ball-milling device for preparing low-moisture calcium carbonate comprises a ball mill, a storage bin, a belt conveyor and a spiral reamer conveyor, and is characterized by further comprising a grinding aid barrel, a hot air blower, a classifier and a pulse bag dust collector; the belt conveyor conveys materials into the first spiral reamer conveyor from the storage bin; two feed inlets are formed in the upper portion of the first spiral reamer conveyor, one feed inlet is connected with the discharge end of the classifier through the second spiral reamer conveyor, and coarse particles screened by the classifier are conveyed into the first spiral reamer conveyor again; the other feed inlet is connected with a grinding aid barrel through a hose, and grinding aids in the grinding aid barrel are conveyed through a diaphragm pump and sprayed onto materials in a spiral reamer conveyor; the discharge hole of the first spiral reamer conveyor is connected with the feed inlet of the ball mill; the hot air outlet pipeline of the hot air blower provides hot air for the ball mill through a feed port of the ball mill; the discharge end of the ball mill is connected with a classifier through a pipeline.
2. The ball mill device with high grinding efficiency for preparing low-moisture calcium carbonate according to claim 1, characterized in that the ball mill has a horizontal two-bin structure, and a grate plate is arranged between a front bin and a rear bin; zirconia ceramic balls with different diameters of 30-50mm are placed in the front bin, and zirconia ceramic balls with different diameters of 10-30mm are placed in the rear bin.
3. The ball milling device with high grinding efficiency for preparing low-moisture calcium carbonate according to claim 1, characterized in that a grading wheel rotating at high speed is arranged in the grading machine to screen powder; the fine powder reaching the fineness enters a pulse bag dust collector through a grading wheel; screening off unqualified powder, and conveying the powder into the first spiral conveyor again through the second spiral reamer conveyor; the pulse bag dust collector is connected with a large draught fan through an air pipe, and a packing machine is arranged at a bottom discharge port.
4. The ball milling device with high grinding efficiency for preparing low-moisture calcium carbonate according to claim 1, characterized in that the hot air blower consists of an air blower, a heater and a control circuit; the blower sends out air heated by the heater; the control circuit controls the working states of the blower and the heater.
5. The ball mill apparatus with high grinding efficiency for preparing low-moisture calcium carbonate according to claim 2, wherein the grate plate has a plurality of fine holes distributed therein, through which only materials having a certain fineness pass.
6. The high grinding efficiency ball milling device for preparing low moisture calcium carbonate according to claim 2 is characterized in that the rear end of the ball mill is provided with a large gear; the big gear is connected with a motor through a small gear; the motor is electrified to drive the pinion and the bull gear to rotate, so that the ball mill barrel rotates clockwise at a constant speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221405435.0U CN217989497U (en) | 2022-06-08 | 2022-06-08 | Preparation low moisture ball-milling device of high grinding efficiency for calcium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221405435.0U CN217989497U (en) | 2022-06-08 | 2022-06-08 | Preparation low moisture ball-milling device of high grinding efficiency for calcium carbonate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612313A (en) * | 2022-10-24 | 2023-01-17 | 江西广源化工有限责任公司 | Preparation method and application of barite powder with low oil absorption and high-solid coating |
| CN117599917A (en) * | 2024-01-23 | 2024-02-27 | 山东中科圣创微纳科技发展有限公司 | Ternary copper powder catalyst preparation system |
-
2022
- 2022-06-08 CN CN202221405435.0U patent/CN217989497U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612313A (en) * | 2022-10-24 | 2023-01-17 | 江西广源化工有限责任公司 | Preparation method and application of barite powder with low oil absorption and high-solid coating |
| CN117599917A (en) * | 2024-01-23 | 2024-02-27 | 山东中科圣创微纳科技发展有限公司 | Ternary copper powder catalyst preparation system |
| CN117599917B (en) * | 2024-01-23 | 2024-03-22 | 山东中科圣创微纳科技发展有限公司 | Ternary copper powder catalyst preparation system |
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