JP2000019096A - Blain fineness-of-powder measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately measure the fineness of powder and to save the labor for measuring operation by providing a sample powder supply part for introducing a specific amount of particle to a cell next to a Blaine air- permeability apparatus and providing a cell-carrying mechanism for passing the cell between both of them and a plunger for compressing the powder in the cell with a specific pressure. SOLUTION: Powder in a particle storage part 7b is mixed and agitated by a mixing agitation machine 8 for fluidizing according to the control of a control PC30 and is introduced into a cell 11 by a powder supply mechanism 7c. Then, the weight of the powder in the cell 11 is measured by a load cell 18b, the powder supply mechanism 7c is stopped when a specific amount of (for example, approximately 80 cc) is introduced into the cell 11, a cell-carrying mechanism 15 is operated, and the cell 11 is carried from the sample powder supply part 7 to a cell placement stand 21 of the Blaine air-permeability apparatus 20, and is located at the lower portion of a plunger 23. In this state, an air cylinder 24 is operated and the plunger 23 is lowered, powder in the cell 11 is compressed with a specific pressure for forming a bed, and the fineness of powder is measured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Blaine fineness measuring apparatus for measuring the fineness of powder, and more particularly to a Blaine fineness measuring apparatus useful in cement production, fly ash processing and the like.

[0002]

2. Description of the Related Art Conventionally, for example, in the production of cement, fineness control of cement raw materials and products has been performed. In a thermal power plant, fly ash processing equipment for recycling fly ash generated in a coal-fired boiler as a cement raw material has been put to practical use. In this case, the collected fly ash is classified after being controlled for fineness, and is classified into a recycled one and a non-reused one. In any case, a Blaine air permeation apparatus to which the Blaine method is applied is conventionally used for fineness control of cement and fly ash.

[0003] A brane air permeation apparatus mainly comprises a manometer filled with a manometer liquid and a permeation cell mounted on the top of the manometer. At the time of fineness measurement, the sample powder is introduced into the transmission cell and the plunger is manually inserted into the transmission cell, thereby compressing the sample powder in the transmission cell to form a bed (compressed body). . In this state, the transmission cell is mounted on the manometer, and the manometer liquid in the manometer is sucked up to the top marked line A. Thereafter, the cock is closed, and the passage time during which the descending head of the manometer liquid passes between the predetermined marked lines B and C is measured. The specific surface area of the sample powder can be determined from the measured transit time and the previously determined device constants and the like.

[0004]

However, in the case of using a conventional brane air permeation apparatus, the operation of forming the bed requires extremely skill since the plunger must be manually operated. That is, since the pressure when the plunger is pushed into the permeation cell causes individual differences, it is difficult to form a bed having a certain porosity (porosity), which may lead to measurement errors. Was. Also, when sampling powder from various powder processing equipment at cement plants and thermal power plants and measuring the fineness using a conventional brane air permeation device,
Work such as powder sampling, introduction into the cell, weighing, compression, operation of the brane air permeation device, and the like were all performed by workers, so the labor and time required for fineness measurement were enormous. .

Accordingly, an object of the present invention is to provide a Blaine fineness measuring apparatus capable of easily and accurately measuring the fineness of a powder and saving the fineness measurement.

[0006]

According to a first aspect of the present invention, there is provided a Blaine fineness measuring apparatus comprising a Blaine air permeability unit using a manometer and a cell, wherein the Blaine fineness is measured. A measuring device, which is provided in parallel with the Blaine air permeation unit, is capable of introducing a predetermined amount of powder into the cell, and is capable of holding the cell. A cell transport mechanism for transferring cells to and from the unit, and a plunger that can move up and down with respect to the cells, is connected to the manometer, and compresses the powder in the cells at a predetermined pressure. And

When the fineness of a powder is measured using this Blaine fineness measuring device, the sample powder supply section is operated,
A sample powder is introduced into the cell. When a predetermined amount of powder is introduced into the cell, the cell is transferred from the sample powder supply unit to the brane air permeable unit by the cell transfer mechanism. The cells transported to the brane air permeation unit
It is placed below the plunger and the plunger is lowered with respect to the cell. The powder in the cell is compressed at a predetermined pressure to form a bed. Then, a predetermined measurement is performed by operating the brane air transmission unit.

Accordingly, the introduction of the sample powder into the cell and the operation of the plunger which requires extremely skill are automated, and the work of measuring the fineness is greatly reduced. In addition, it is not necessary to manually perform the plunger operation, and reproducibility of the plunger operation is ensured, so that a bed having a constant porosity (porosity) can be formed extremely easily. Therefore, the fineness of the powder can be measured easily and with high accuracy.

In this case, the apparatus may further include a powder sampling unit which can be connected to powder processing equipment for processing the powder, and which extracts a fixed amount of powder from the powder processing equipment and supplies the powder to a sample powder supply unit. preferable. If such a configuration is adopted, when measuring the fineness of the powder being processed by various powder processing equipment,
The powder can be sampled automatically, and the work of measuring the fineness can be saved.

[0010] It is preferable that the apparatus further comprises a foreign substance removing section provided between the powder collecting section and the sample powder supplying section, for removing foreign substances mixed in the powder. By employing such a configuration, the powder from which the foreign matter has been removed can be used as the sample powder, so that errors in measurement by the Blaine air transmission unit can be reduced.

[0011] Further, the operation of the Blaine air permeation unit, the sample powder supply unit, the cell transport mechanism, and the powder sampling unit is controlled, and based on the measured value of the Blaine air permeation unit and the amount of powder in the cell. It is preferable to further comprise a control unit for measuring the fineness of the powder. If such a configuration is adopted, for example, when sampling powder from a variety of powder processing equipment of a cement plant or a thermal power plant to measure fineness, sampling of the powder, introduction into the cell, compression, Since operations such as operation of the brane air permeation device are automated,
The labor and time required for measuring the fineness can be greatly reduced.

It is preferable that the cell transport mechanism can measure the weight of the powder introduced into the cell. Thus, when the powder is introduced from the sample powder supply unit into the cell while the cell is held by the cell transport mechanism, the weight of the powder can be easily measured.

Further, it is preferable that the sample powder supply section includes a mixing and stirring mechanism for mixing and stirring the powder. If such a configuration is employed, for example, powders collected in a plurality of times can be mixed and stirred and then used as a sample powder, so that a more accurate fineness measurement can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the apparatus for measuring a Blaine fineness according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing an outline of a Blaine fineness measuring apparatus according to the present invention. The Blaine fineness measuring apparatus 1 shown in FIG. 1 is useful for fineness control in a powder processing facility of a cement plant or a fly ash processing facility of a thermal power plant. Is measured. The Blaine fineness measuring device 1 has a powder collecting unit 2 for collecting powder from various powder processing equipment, and the powder collecting unit 2 includes a powder storage hopper and a powder storage hopper of the powder processing equipment. It can be connected to the transfer pipe. The powder sampling unit 2 has a built-in powder sampling shaft 3, which is connected to an air cylinder 4. The tip of the powder sampling shaft 3 is formed in a hollow triangular pyramid shape having a predetermined volume (for example, 500 cc). The air cylinder 4 is connected to a compressor 5 controlled by the control PC 30.

When sampling the powder from the powder processing equipment, the compressor 5 is operated via the control PC 30 to send compressed air to the air cylinder 4, and the powder collection shaft 3 is moved to the powder storage hopper or the powder storage hopper. Protrude into the transfer pipe. Then, by contracting the air cylinder 4 and pulling back the powder collecting shaft 3, a certain amount of powder is collected from the powder processing equipment. As a result, the sampling of the powder can be automatically performed, so that the work of measuring the fineness can be saved. Further, the powder sampling shaft 3 is operated only at the time of sampling, and remains in the powder sampling unit 2 except at the time of sampling. There is no hindrance. In addition, a screw feeder, a rotary feeder, or the like may be used as the powder collecting unit 2.

A foreign matter removing section 6 is provided below the powder collecting section 2, and a sample powder supply section 7 is provided below the foreign matter removing section 6. The powder sampled by the powder sampling shaft 3 falls from the powder sampling unit 2 and is received by the foreign matter removing unit 6, and after the mixed foreign matter is removed, is supplied to the sample powder supply unit 7. You. Further, the foreign matter mixed in the powder is sieved into the foreign matter processing tank 6a. As described above, by providing the foreign matter removing unit 6 between the powder collecting unit 2 and the sample powder supplying unit 7, the powder from which the foreign matter has been removed can be used as the sample powder. The measurement error of the degree is reduced. Foreign matter removal unit 6
A vibration type feeder or the like is used, and the operation of the foreign matter removing unit 6 is also controlled by the control PC 30.

The sample powder supply unit 7 has a powder receiving hopper 7a for receiving the powder supplied from the powder collecting unit 2 via the foreign matter removing unit 6 at the upper part. The powder receiving hopper 7a communicates with an upright powder storage section 7b via two valves. That is, the powder dropped from the foreign matter removing unit 6 is received by the powder receiving hopper 7a,
It is stored in the powder storing section 7b. The powder storage unit 7b has a volume of, for example, about 2000 cc, and has a mixing and stirring mechanism 8 including a motor driven stirring shaft and the like.
Is built-in. Thus, the powder can be collected and stored in a plurality of times, mixed and stirred, and then used as a sample powder, so that a more accurate fineness measurement can be performed.

From the lower part of the powder storage section 7b, a powder supply mechanism 7c composed of a screw feeder or the like driven by a motor extends in the horizontal direction. This powder supply mechanism 7
A powder supply nozzle 7d extends vertically downward from the tip of c through a valve. Further, the sample powder supply unit 7
Is a cell cleaning unit 1 disposed below the powder supply nozzle 7d.
Has zero. On the upper surface of the cell cleaning section 10, a cell 11 for forming a bed by introducing powder at the time of fineness measurement can be placed. These mixing and stirring mechanisms 8,
The operation of the powder supply mechanism 9 and the cell cleaning unit 10 is controlled by a control PC.
30. On the other hand, the surplus powder in the powder storage section 7b is stored in the tank 7e.

Here, the cell 11 will be described. As shown in FIG. 2, the cell 11 has a substantially cylindrical shape, and is used in a state where powder of about 80 cc is accommodated therein. The cell 11 is formed of a hard metal such as stainless steel or the like.
4 is fitted. This filter 14 is formed of a sintered metal or a porous plate,
It has a mesh size of about μm. As a result, the powder introduced into the cell 11 does not accumulate on the filter 14 and spill out of the cell 11, and
The air permeation at the bottom of the is ensured. It is possible to use a general filter paper instead of the filter 14, but if such a filter 14 is used, it is not necessary to replace the filter paper every time the fineness is measured.

The lower end of the cell 11 is provided with a lower flange portion 11a formed in a circular flange shape. A concave portion is formed on the lower surface of the lower flange portion 11a, and the filter 14 is fitted into the concave portion. A support plate 12 having an outer diameter substantially equal to the outer diameter of the lower flange 11a is fixed to the lower surface of the lower flange 11a.
A perforated plate 13 having substantially the same diameter as the inner diameter of the filter 14 is fitted into the center of the upper surface of the support plate 12.
As a result, the filter 14 is supported by the support plate 12 via the effective plate 13 and is reliably held on the cell 11. In addition, by forming the bottom of the cell 11 in a flange shape, the cell 11 can be stably placed on the cell cleaning unit 10 or the like. Further, an upper flange portion 11b formed in a flange shape is provided at an upper portion of the cell 11, and a plurality of holes 11c are formed in the upper flange portion 11b.

When the powder is introduced into the cell 11 by the sample powder supply unit 7, the cell transport mechanism 15 moves the cell 11 up to the brain air transmission unit 20 arranged side by side with the sample powder supply unit 7. Conveyed. Cell transport mechanism 15
For example, as shown in FIG. 3, the base of the line connecting the cell cleaning unit 10 of the sample powder supply unit 7 and the cell mounting table 21 of the brane air permeable unit 20 is opposed to the base of an isosceles triangle. Is located at the position of the vertex The cell transfer mechanism 15 holds the cell 11 between the cell cleaning unit 10 and the cell mounting table 21, and is rotatable in the horizontal direction and vertically movable in the vertical direction.
The drive unit 17 is controlled by C30 and controls the drive of the transport arm 16. At the tip of the transfer arm 16,
A cell holder 18 is provided. This cell holder 18
Has a U-shape, and a projection 18a is formed on the upper surface thereof to engage with a hole 11c formed in the upper flange portion 11b of the cell 11. The transfer arm 16 has a built-in load cell 18b.

By operating the powder supply mechanism 9 with the cell 11 held by the cell holder 18 positioned below the powder supply nozzle 7d, the powder supply nozzle 7
The powder is introduced into the cell 11 via d, and the weight of the powder in the cell is measured by the load cell 18b. The value measured by the load cell 18b is sent to the control PC 30.
When the cell 11 is transferred between the sample powder supply unit 7 and the brane air permeable unit, the transfer arm 16 is moved up and down with respect to the cell cleaning unit 10 or the cell 11 placed on the cell mounting table 21. Rotate to position the cell 11 between the two free ends of the cell holder 18. And the cell holder 1
8 with respect to the upper flange portion 11b of the cell 11,
The projection 18a is inserted into the hole 11c of the upper flange 11b. Thus, the cell 11 is held by the cell holder 18, and the cell 11 can be transferred by rotating the transfer arm 16 in this state. When mounting the cell 11 on the cell cleaning unit 10 or the cell mounting table 21, the transfer arm 16 is lowered with respect to the upper flange 11b.

As shown in FIG. 1, the Blaine air permeation unit 20 measures the fineness of a powder by a Blaine method using a cell 11 and a manometer 22. A plunger 23 extending in the vertical direction is disposed above a cell mounting table 21 on which the cells 11 transported to the brane air transmission unit 20 are mounted. The plunger 23 has an air cylinder 24 operated by the compressor 5.
It is connected to the. That is, by expanding and contracting the air cylinder 24, the plunger 23 is moved to the cell mounting table 21.
Move up and down with respect to the cell 11 placed on the. Thereby, the bed can be formed by compressing the powder in the cell 11 at a predetermined pressure (for example, 7 kg / cm ² G) via the plunger 23. Further, the amount of movement of the plunger 23 is detected by the micro gauge 25. The detected value of the micro gauge 25 is sent to the control PC 30 and the control PC 30
Measures the bed height based on the indicated value of the micro gauge 25.

As shown in FIG. 1, the plunger 23 is connected to the manometer 22 via an air tube.
The manometer 22 is connected to a vacuum pump 26 that is filled with a predetermined manometer liquid and that is driven and controlled by the control PC 30. When measuring the fineness of the powder introduced into the cell 11, the control PC 30 operates the vacuum pump 26 and opens and closes a predetermined valve or cock. In addition, the brain air permeation unit 20
Is provided with a measuring unit 27 for measuring the passage time of the descending head of the manometer liquid passing between the predetermined marked lines B and C, and the measured value of the measuring unit 27 is sent to the control PC 30. Then, the control PC 30 controls the load cell 18b.
And brane air permeation unit 20 (micro gauge 2
5 and the fineness (specific surface area) of the powder are measured based on the measurement values of the measuring unit 27).

Further, the Blaine fineness measuring apparatus 1 can be provided with an automatic true specific gravity meter 28 as shown in FIG. In this case, when the fineness of the powder having different true specific gravity is measured by the Blaine fineness measuring device 1, the true specific gravity of the powder is measured using the automatic true specific gravity meter 28 before the fineness measurement by the Blaine air transmission unit 20. Should be measured. Thus, the supply amount of the sample powder to the brane air transmission unit 20 can be corrected based on the measurement value of the automatic true specific gravity meter 28. In addition, the Blaine fineness measuring device 1 includes:
As shown in FIG. 1, a component analyzer 29 including an X-ray analyzer and an infrared analyzer may be provided. This allows
Active ingredients in fly ash (Si, Al, Fe
), Impurities (V, Se, etc.), analysis of unburned carbon, measurement of the amount of methylene blue adsorbed, and the like. Further, the configuration may be such that the ambient temperature and the sample temperature are input to the control PC 30.

The Blaine fineness measuring device 1 has an automatic dust collecting device 31. For example, when the fineness measurement is completed, the compressor 5 causes the powder sampling unit 2, the sample powder supply unit 7, the cell cleaning unit 10, the brane air transmission unit 2
0, etc., and the automatic dust collecting device 31
Activate Thereby, the Blaine fineness measuring device 1
The whole can be washed. The control PC 30 is based on a control program created in accordance with the processing steps of the powder processing equipment, the time schedule, and the like, based on the powder sampling unit 2, the compressor 5, the foreign matter removing unit 6, the sample powder supply unit 7, the cell transfer unit 7, and the like. It controls the operation of the mechanism 15, the brane air permeation unit 20, the automatic dust collecting device 31, and various valves.

Next, the above-mentioned Blaine fineness measuring device 1
The procedure for measuring the fineness of powder by the method will be described.

First, the powder collecting section 2 of the Blaine fineness measuring device 1 is connected in advance to a powder storage hopper or a powder transfer pipe of a powder processing facility. The cell 11 is connected to the transfer arm 1
6 and held on the cell cleaning unit 10 of the sample powder supply unit 7. Control P
The C30 operates the air cylinder 4 based on a predetermined control program to cause the powder sampling unit 2 to sample a predetermined amount (for example, 500 cc) of powder from a powder storage hopper or a powder transfer pipe. The cycle of powder collection is, for example, once every hour. The powder collected by the powder collecting section 2 is supplied to the sample powder supply section 7 through the foreign substance removing section 6.
Is supplied to the powder storage unit 7b.

Here, the cycle of fineness measurement is, for example, once every four hours. That is, the control PC 30 activates the mixing and stirring mechanism 8 when the powder collection unit 2 is operated four times and a predetermined amount (for example, 2000 cc) of powder is stored in the powder storage unit 7b. Thereby, the powder in the powder storage section 7b is mixed and stirred and fluidized. Then, the powder supply mechanism 7c is operated, and the powder in the cell 11 is introduced via the powder supply nozzle 7d. The control PC 30 causes the load cell 18b to measure the weight of the powder in the cell 11, and stops the operation of the powder supply mechanism 7c when a predetermined amount (for example, about 80 cc) of the powder is introduced into the cell 11. The measurement value of the load cell 18b is stored in a predetermined storage area of the control PC 30. Next, the control PC 30 operates the cell transport mechanism 15. Thereby, the cell 11 is transferred from the sample powder supply unit 7 to the cell mounting table 21 of the brane air permeable unit 20.

The cell 11 mounted on the cell mounting table 21
It is located below the plunger 23. In this state, the air cylinder 24 is operated, and the plunger 23 is lowered with respect to the cell. The control PC 30 extends the air cylinder 24 until the indicated value of the micro gauge 25 reaches a predetermined value. Thus, the powder in the cell 11 is compressed at a predetermined pressure to form a bed. As described above, in the Blaine fineness measuring apparatus 1, since the plunger operation requiring extremely skill is automated, the work of measuring fineness can be greatly reduced. In addition, it is not necessary to manually perform the plunger operation, and reproducibility of the plunger operation is ensured, so that a bed having a constant porosity (porosity) can be formed extremely easily. Therefore, the fineness of the powder can be measured easily and with high accuracy.

When the bed forming operation in the cell 11 has been completed, the brane air permeable unit is operated to perform a predetermined measurement. That is, the vacuum pump 26 is operated, and the manometer liquid in the manometer is sucked up to the top marked line A. Thereafter, the predetermined cock is closed, and the measuring unit 27 measures the passing time during which the descending head of the manometer liquid passes between the predetermined marked lines B and C. The control PC 30 receives the measurement value of the measurement unit 27, measures the fineness (specific surface area) of the powder based on the measurement values of the load cell 18b, the micro gauge 25, and the measurement unit 27, and displays the measurement result on a display. Let it. After the measurement is completed, the cell 11 is transferred onto the cell cleaning unit 10 by the cell transfer mechanism 15. The control PC 30 opens a predetermined valve, and operates the compressor 5 and the cell cleaning unit 1.
0 and the automatic dust collecting device 31 are operated. In the cell 11, compressed air is first introduced from below, and then from above.
Compressed air is introduced. Such introduction of compressed air into the cell 11 is repeated as necessary. This allows
The bed in the cell 11 is discharged, and the inside of the cell 11 is washed.

As described above, according to the Blaine fineness measuring apparatus 1, when the fineness is measured by sampling the powder from various kinds of powder processing equipment, the powder is sampled, introduced into the cell, compressed, and measured. Since the operation such as the operation of the brane air permeation device is automated, the labor and time required for measuring the fineness can be significantly reduced.

FIG. 4 is a schematic diagram showing a fly ash processing facility to which the above-described brane fineness measuring apparatus 1 is applied. The fly ash processing equipment 50 shown in the figure is for collecting fly ash generated in a coal-fired boiler 51 of a thermal power plant and reusing it as a cement raw material. The fly ash is collected from hoppers provided below the economizer 52, the air preheater 53, and the electric precipitator 54, and stored in the ash relay tank 56 via the ash transfer pipe 55. Fly ash stored in the ash relay tank 56 is classified into non-recovered ash and recovered ash based on the fineness. Then, by operating the pressure feed blower 57, the non-recovered ash is transferred to the non-recovered ash storage silo 58.
The collected ash is transferred to a collected ash storage silo 59.

Here, the fly ash processing equipment 50
In this example, the Blaine fineness measuring apparatus 1 according to the present invention is connected to the ash transfer pipe 55 at a position upstream of the ash relay tank 56. That is, fly ash is classified based on the fineness measured by the Blaine fineness measuring device 1. As described above, by sampling fly ash before storing it in the ash relay tank 56, the fineness of fly ash that is not contaminated can be measured, so that fly ash can be classified with high accuracy. The hopper provided below the electrostatic precipitator 54 and the ash relay tank 56 are connected to the Blaine fineness measuring device 1 and fly ash is collected and fineness is measured. And classify the fly ash.

The fly ash stored in the non-recovered ash storage silo 58 is loaded on a vehicle or a ship according to a predetermined schedule. On the other hand, the fly ash stored in the recovered ash storage silo 59 is further classified into recovered powder, fine powder and fine powder. That is, only the recovered powder is directly loaded from the recovered ash storage silo 59, the fine powder is stored in the fine powder storage silo 60, and the fine powder is stored in the fine powder storage silo 61. In this case, classification of fly ash is performed by a rotary blade type classification device 62 provided above the fine powder storage silo 60.

Here, the fly ash processing equipment 50
In the example, the Blaine fineness measuring device 1 is connected to an ash transfer pipe 63 connecting the classifying device 62 and the fine powder storage silo 61. Thereby, fine powder and fine powder can be classified with high accuracy. In addition, if the discrimination between the fine powder and the fine powder is automated using the Blaine fineness measuring device 1, the rotation speed of the rotor in the classifying device 62 can be controlled based on the measurement result of the Blaine fineness measuring device 1. Becomes possible. Therefore, the classification of the fine powder and the fine powder can be completely automated.

As described above, the Blaine fineness measuring apparatus 1
Can be used for powder sampling, cell introduction, compression, weighing,
Since the work such as the operation of the brane air permeation device is automated, the labor and time required for measuring the fineness in the fly ash processing equipment can be greatly reduced. Also, classification of fly ash can be automated with high precision. Further, the Blaine fineness measuring device 1 can be applied to the fineness control in a cement factory as it is.

[0039]

The brane fineness measuring apparatus according to the present invention is configured as described above, and has the following effects. That is, a sample powder supply unit capable of introducing powder into the cell and a brane air transmission unit having a plunger capable of compressing the powder in the cell at a predetermined pressure are provided. By providing a cell transfer mechanism that transfers cells to and from the unit, the fineness of the powder can be measured easily and with high accuracy.
In addition, labor saving in fineness measurement can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an outline of a powder measuring device according to the present invention.

FIG. 2 is a sectional view showing a cell included in the powder measuring device of FIG.

FIG. 3 is a perspective view showing a cell transport mechanism included in the powder measuring device of FIG.

FIG. 4 is a schematic view showing an outline of a fly ash processing equipment to which the powder measuring device of FIG. 1 is applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Brain fineness measuring device, 2 ... Powder collection part, 6 ... Contamination removal part, 7 ... Sample powder supply part, 7c ... Powder supply mechanism,
8: mixing and stirring mechanism, 11: cell, 15: cell transport mechanism,
20 ... Brain air permeation unit, 22 ... Manometer,
23 ... plunger, 30 ... control PC, 50 ... fly ash processing equipment.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yoichi Kato 2-1-1 Tanidocho, Tanashi-shi, Tokyo Sumitomo Heavy Industries, Ltd. Inside Tanashi Factory (72) Inventor Kunio Iwamoto 5-27 Sendagaya, Shibuya-ku, Tokyo No. 7 Inside Seishin Corporation (72) Inventor Kenzo Ogushi 5-27-7 Sendagaya Shibuya-ku Tokyo

Claims (6)

[Claims] 1. A brane fineness measuring apparatus for measuring fineness of a powder, comprising a brane air permeability unit using a manometer and a cell, wherein the apparatus is arranged in parallel with the brane air permeability unit, and A sample powder supply unit capable of introducing a predetermined amount of powder, a cell transport mechanism capable of holding the cell, and transferring the cell between the sample powder supply unit and the brane air transmission unit; A Blaine fineness measuring apparatus, comprising: a plunger that is vertically movable with respect to a cell, is connected to the manometer, and compresses powder in the cell at a predetermined pressure. 2. A powder collecting unit which can be connected to a powder processing facility for processing the powder, and which collects a predetermined amount of the powder from the powder processing facility and supplies the powder to the sample powder supply unit. The Blaine fineness measuring apparatus according to claim 1, further comprising: 3. The apparatus according to claim 2, further comprising a foreign matter removing section provided between the powder collecting section and the sample powder supplying section, for removing foreign matter mixed in the powder. The Blaine fineness measuring apparatus according to the above. 4. The apparatus controls the operation of the brane air permeable unit, the sample powder supply unit, the cell transport mechanism, and the powder sampling unit, and also measures the measured value of the brane air permeable unit and the inside of the cell. The Blaine fineness measuring apparatus according to claim 2 or 3, further comprising a control unit configured to measure the fineness of the powder based on the powder amount. 5. A Blaine fineness measuring apparatus according to claim 1, wherein said cell transport mechanism is capable of measuring the weight of the powder introduced into said cell. 6. The apparatus according to claim 1, wherein the sample powder supply unit includes a mixing and stirring mechanism for mixing and stirring the powder.
The apparatus for measuring a Blaine fineness according to any one of claims 1 to 5.