CN114062195A - Preparation method and device of powder wettability test sample - Google Patents
Preparation method and device of powder wettability test sample Download PDFInfo
- Publication number
- CN114062195A CN114062195A CN202111356977.3A CN202111356977A CN114062195A CN 114062195 A CN114062195 A CN 114062195A CN 202111356977 A CN202111356977 A CN 202111356977A CN 114062195 A CN114062195 A CN 114062195A
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- sample
- powder
- rod
- beating
- wettability test
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- 239000000843 powder Substances 0.000 title claims abstract description 54
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000010009 beating Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 6
- 238000011068 loading method Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- -1 metallurgy Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000004408 titanium dioxide Substances 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 5
- 238000009736 wetting Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
Abstract
The invention discloses a preparation method of a powder wettability test sample, which comprises the following steps: drying the powder and the sample tube in an oven; weighing the dried powder with required mass into a sample tube; placing the sample tube filled with the dried powder on a beating device for beating, and regulating and controlling the powder bulk density by regulating the distance between a sample platform where the powder is located and a motor and the beating time; the beaten sample tube was removed from the rapping device to read the height, the bulk density was calculated from the mass and volume and a wettability test was performed. The invention can accurately measure the wettability of the liquid to the solid powder through the sample loading process and the control of the powder bulk density, and ensures that the whole sample preparation process has simple operation and wide application in the aspects of petroleum, metallurgy, medicine, agriculture and the like.
Description
Technical Field
The invention belongs to powder wettability tests, and particularly relates to a preparation method and a device of a sample used for the powder wettability test.
Background
Wetting is a common phenomenon in nature and in human activity, and is generally referred to as wetting as the process by which a solid surface liquid replaces another fluid (gas or liquid) with which it is immiscible. For a regular solid, a measure of how well a liquid wets the surface of the solid can be measured by the direct contact angle. However, the powder has small particles and a large specific surface area, and the wettability thereof is difficult to measure by a direct contact angle. In the experiment, the capillary rising method is generally used for measuring the wettability of the powder by the liquid and calculating the wetting work, and the GB/T-16913.8-1997 dust physical property experimental method 8 part based on the capillary rising method is also issued by the nation: measurement of wettability-the wetting property of dust was measured by the permeation rate method. The capillary rise method assumes that the gap between the powder layers is a bundle of parallel capillary tubes, and the glass tube containing the powder is inserted into a solvent, which rises up the capillary tubes, and the square of the height of the liquid-wetted powder is linear with time. In order to obtain an absolute value of an experimental result with high precision and repeatability, experimental conditions, including storage conditions of the powder before the experiment, the weight of the powder for the experiment, the bulk density of the powder, and the control of the temperature and humidity during the experiment, need to be strictly controlled during the experiment. According to GB/T-16913.8-1997 part 8 of the dust physical property test method: the method for testing the wettability of the powder comprises the steps of testing the powder by a soaking speed method, preparing a sample, namely, manually beating a glass tube for 10-20 times by using a wooden stick for powder accumulation, wherein uneven beating force can cause inconsistent accumulation density of the powder, so that the measured wettability is poor in repeatability.
Disclosure of Invention
The invention discloses a preparation method of a powder wettability test sample, which can accurately measure the wettability of liquid to solid powder through the sample loading process and the control of powder bulk density.
According to the invention, the preparation method of the powder wettability test sample comprises the following steps:
step one, drying the powder and the sample tube in an oven;
weighing the dried powder with the required mass into a sample tube;
placing the sample tube filled with the dried powder on a beating device for beating, and regulating and controlling the bulk density of the powder by regulating the distance between a sample platform where the powder is located and a motor and the beating time;
and step four, taking the knocked sample tube off the knocking device to read the height, calculating the bulk density according to the mass and the volume, and performing a wettability test.
According to one embodiment of the invention, the sample tube has a known inner diameter, a glass sand core at the bottom and a height scale mark on the tube body.
According to an embodiment of the present invention, the weighing amount of the dried powder in the second step is 4-6 g.
According to an embodiment of the present invention, the deviation of the bulk density of the step four is less than 1% when the experiment is repeated.
A beating device for powder wettability test samples comprises a sample table and a sample fixing clamp which are arranged up and down and are respectively used for fixing the upper part and the lower part of a sample tube; the sample tube knocking device comprises a knocking rod, a reciprocating motor is connected with one end of the knocking rod through a motor reciprocating rod, and the reciprocating motor drives the motor reciprocating rod to enable the knocking rod to do reciprocating motion to knock a sample tube.
According to one embodiment of the invention, the sample table and the sample fixing clamp are vertically fixed on the sample table bracket through the cross clamp, and the bracket table is vertically fixed on the fixing base.
According to an embodiment of the invention, the sample stage has a groove structure, and the groove is matched with the outer diameter of the sample tube.
According to one embodiment of the invention, the device comprises a rapping bar supporting rod, the top of which penetrates through the body of the rapping bar body, so that the rapping bar horizontally reciprocates around the connecting point of the supporting rod and the rapping bar.
According to one embodiment of the invention, nuts are arranged on the tops of the knocking rod supporting rod and the motor reciprocating rod.
According to one embodiment of the invention, the motor reciprocating rod is vertically fixed on the motor rotor and rotates along with the motor rotor.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
1. by adopting the technical scheme of the invention, the wettability of the liquid to the solid powder can be accurately measured by controlling the sample loading process and the powder bulk density, the whole sample preparation process is simple to operate, and the application in the aspects of petroleum, metallurgy, medicine, agriculture and the like is very wide.
Drawings
FIG. 1 is a flow chart of a powder wettability test sample preparation method according to the present invention;
fig. 2 is a schematic structural diagram of a rapping device in accordance with the present invention.
In the figure, the position of the upper end of the main shaft,
1. the device comprises a fixed base, 2 sample table supports, 3 sample tables, 4 sample fixing clamps, 5 sample tubes, 6 beating rods, 8 beating rod supporting rods, 7 nuts, 9 reciprocating motors and 10 motor reciprocating rods.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Taking a titanium dioxide wettability test sample as an example, the method flow refers to FIG. 1,
firstly, drying titanium dioxide and a sample tube 5 at 105 ℃ for 4 hours;
secondly, weighing the mass of the sample tube 5, adding dried titanium dioxide into the sample tube 5, wherein the sample is prevented from adhering to the upper wall of the sample tube 5 as much as possible, weighing the mass of the sample tube 5 filled with the titanium dioxide, and calculating the mass of the added titanium dioxide to be 4.1236 g;
thirdly, placing the sample tube 5 in a groove of a sample table 3 of the automatic tapping device, screwing a sample fixing clamp, adjusting the distance between the sample tube 5 and a tapping rod supporting rod, setting tapping time to be 3 minutes, starting a power supply of a reciprocating motor 9, and tapping a wooden rod to tap the sample tube for 53 minutes;
as shown in fig. 2, the automatic tapping device automatically taps the side wall of the sample tube; the device comprises a sample table 3 and a sample fixing clamp 4 which are arranged up and down and are respectively used for fixing the upper part and the lower part of a sample tube 5; the sample table 3 and the sample fixing clamp 4 are vertically fixed on the sample table support 2 through a cross clamp, and the support table 2 is vertically fixed on the fixing base 1. The sample platform 3 is provided with a groove structure, and the groove is matched with the outer diameter of the sample tube 5.
The sample tube knocking device comprises a knocking rod 6, a reciprocating motor 9 is connected with one end of the knocking rod 6 through a motor reciprocating rod 10, and the reciprocating motor 9 drives the motor reciprocating rod 10 to enable the knocking rod 6 to do reciprocating motion to knock a sample tube 5.
The device comprises a knocking rod supporting rod 8, wherein the top of the knocking rod supporting rod penetrates through the rod body of the knocking rod 6, so that the knocking rod 6 horizontally reciprocates around the connecting point of the supporting rod 8 and the knocking rod 6.
The tops of the knocking rod supporting rod (8) and the motor reciprocating rod (10) are provided with screw caps (7); the top of the knocking rod support rod 8 is connected with the screw cap 7 to prevent the knocking rod 6 from sliding off; the top of the motor reciprocating rod 10 is connected with the screw cap 7 to prevent the knocking rod 6 from sliding off;
the motor reciprocating rod 10 is vertically fixed on the rotor of the motor 9 and rotates along with the rotor of the motor 9.
When the motor 9 automatically rotates, the motor reciprocating rod 10 is driven to do reciprocating motion, and the motor reciprocating rod 10 drives the knocking rod 8 to knock the sample tube 5. The sample tube was tapped with a wooden stick for 53 minutes.
Fourthly, recording the height of the titanium dioxide as 0.55 cm, and calculating the bulk density of the sample to be 3.73g/cm according to the inner diameter of the sample tube as 0.8cm3And a wettability test was performed.
The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The preparation method of the powder wettability test sample is characterized by comprising the following steps of:
step one, drying the powder and the sample tube in an oven;
weighing the dried powder with the required mass into a sample tube;
placing the sample tube filled with the dried powder on a beating device for beating, and regulating and controlling the bulk density of the powder by regulating the distance between a sample platform where the powder is located and a motor and the beating time;
and step four, taking the knocked sample tube off the knocking device to read the height, calculating the bulk density according to the mass and the volume, and performing a wettability test.
2. The method for preparing a powder wettability test sample according to claim 1, wherein the inner diameter of the sample tube is known, the bottom of the sample tube is provided with a glass sand core, and the tube body is provided with a height scale mark.
3. The method for preparing the powder wettability test sample according to claim 1, wherein the weighing amount of the dried powder in the second step is 4-6 g.
4. The method for preparing a powder wettability test sample according to claim 1, wherein the deviation of bulk density in the repeat experiment of step four is less than 1%.
5. The beating device for the powder wettability test sample is characterized by comprising a sample table (3) and a sample fixing clamp (4) which are arranged up and down, wherein the sample table and the sample fixing clamp are respectively used for fixing the upper part and the lower part of a sample tube (5); the sample tube beating device comprises a beating rod (6), a reciprocating motor (9) is connected with one end of the beating rod (6) through a motor reciprocating rod (10), and the reciprocating motor (9) drives the motor reciprocating rod (10) to enable the beating rod (6) to do reciprocating motion to beat a sample tube (5).
6. The powder wettability test sample beating device according to claim 5, wherein the sample table (3) and the sample fixing clamp (4) are vertically fixed on the sample table bracket (2) through a cross clamp, and the bracket table (2) is vertically fixed on the fixing base (1).
7. The powder wettability test sample beating device according to claim 5 or 6, wherein the sample table (3) is provided with a groove structure, and the groove structure is matched with the outer diameter of the sample tube (5).
8. The rapping device for powder wettability test samples as claimed in claim 5, comprising a rapping rod supporting rod (8), wherein the top of the rapping rod supporting rod (8) penetrates through the rod body of the rapping rod (6), so that the rapping rod (6) horizontally reciprocates around the connecting point of the supporting rod (8) and the rapping rod (6).
9. The rapping device for powder wettability test samples according to claim 5 or 8, wherein the tops of the rapping rod supporting rod (8) and the motor reciprocating rod (10) are provided with screw caps (7).
10. The powder wettability test sample knocking device according to claim 1, wherein the motor reciprocating rod (10) is vertically fixed on a rotor of the motor (9) and rotates along with the rotor of the motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356977.3A CN114062195A (en) | 2021-11-16 | 2021-11-16 | Preparation method and device of powder wettability test sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356977.3A CN114062195A (en) | 2021-11-16 | 2021-11-16 | Preparation method and device of powder wettability test sample |
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| Publication Number | Publication Date |
|---|---|
| CN114062195A true CN114062195A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111356977.3A Pending CN114062195A (en) | 2021-11-16 | 2021-11-16 | Preparation method and device of powder wettability test sample |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06194293A (en) * | 1992-12-24 | 1994-07-15 | Nikkiso Co Ltd | Automatic bulk specific gravity measuring apparatus for powder product |
| CN2687671Y (en) * | 2004-03-26 | 2005-03-23 | 华东师范大学 | Powder wettability rapid measuring device |
| CN102778412A (en) * | 2011-05-13 | 2012-11-14 | 细川密克朗集团股份有限公司 | Knocking device for powder determination device |
| JP2013088231A (en) * | 2011-10-17 | 2013-05-13 | Hosokawa Micron Corp | Powder layer volume measuring apparatus |
-
2021
- 2021-11-16 CN CN202111356977.3A patent/CN114062195A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06194293A (en) * | 1992-12-24 | 1994-07-15 | Nikkiso Co Ltd | Automatic bulk specific gravity measuring apparatus for powder product |
| CN2687671Y (en) * | 2004-03-26 | 2005-03-23 | 华东师范大学 | Powder wettability rapid measuring device |
| CN102778412A (en) * | 2011-05-13 | 2012-11-14 | 细川密克朗集团股份有限公司 | Knocking device for powder determination device |
| JP2013088231A (en) * | 2011-10-17 | 2013-05-13 | Hosokawa Micron Corp | Powder layer volume measuring apparatus |
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