CN104483165B - The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder - Google Patents
The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder Download PDFInfo
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- CN104483165B CN104483165B CN201410670807.6A CN201410670807A CN104483165B CN 104483165 B CN104483165 B CN 104483165B CN 201410670807 A CN201410670807 A CN 201410670807A CN 104483165 B CN104483165 B CN 104483165B
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Abstract
The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder, including following implementation steps：（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；（Two）0.1 0.2g ferromagnetism powder and ethanol are added into No. 1 test tube cleaned up and forms uniform suspension by ultrasonic wave is scattered；（Three）Ethanol is added into No. 2 test tubes cleaned up, ethanol identity distance test tube mouthful distance 1 1.5cm in test tube, the suspension in No. 1 test tube is drawn with clean dropper, then rapid drop 12 is dripped on the liquid level of No. 2 test tubes, magnet is placed in No. 2 test tube bottoms, when suspension sinks down into No. 2 test tube bottoms, liquid in No. 2 test tubes is removed rapidly, you can obtain the bulky grain ferromagnetism powder in No. 2 test tubes.Sampling instrument of the present invention is few, simple to operate, sampling is rapid and data that are detecting can more accurately reflect the quality of product, so as to improve constantly the quality of product, meets client Geng Gao demand.
Description
Technical field
The present invention relates to a kind of sampling method of big particle diameter powder in ultra-fine magnetic powder.
Background technology
Sedimentation is one kind side of the sinking speed difference measurement size distribution according to the particle of different-grain diameter in a liquid
Method.Its basic process is sample to be put into certain liquid certain density suspension is made, and the particle in suspension is in weight
It will be settled under power or centrifugal action.Stokes laws：In gravitational field, the particle floated on a liquid is by gravity, floating
The effect of power and viscosity resistance will be moved, and its equation of motion is：v=[2(ρ—ρ0)r2/9η]·g.V is particle in formula
Sinking speed, p and p0The respectively density of spheroidal particle and medium, r is the radius of particle, and η is the viscosity of medium, and g is gravity
Acceleration.From Stokes laws we have seen that, sinking speed and particle diameter square are directly proportional.Such as two particle diameter ratios
For 1:10 particle, the ratio between its sinking speed is 1:100, that is fine grain sinking speed is many slowly.
Existing sedimentation detects big particle diameter, and in the presence of taking out, fine powder is more, and big particle diameter powder is not allowed during with Scanning Electron microscope photographing
The drawbacks of being easily photographed.
The content of the invention
The present invention is in view of the shortcomings of the prior art, researched and developed a kind of sampling side of big particle diameter powder in ultra-fine magnetic powder
Method, its object is to：There is provided and a kind of sample taking for big particle diameter powder in convenient, rapid, more accurate separating ultra-fine magnetic powder
Quadrat method.
The technical solution of the present invention：
The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder, it is characterised in that：Including following implementation steps：
（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；
（Two）0.1-0.2g ferromagnetism powder and ethanol are added into No. 1 test tube cleaned up and disperses shape by ultrasonic wave
Into uniform suspension；
（Three）Ethanol identity distance test tube mouthful is added in ethanol, test tube into No. 2 test tubes cleaned up apart from 1-1.5cm,
The suspension in No. 1 test tube is drawn with clean dropper, then magnet is placed in by rapid drop 1-2 drops on the liquid level of No. 2 test tubes
No. 2 test tube bottoms, when suspension sinks down into No. 2 test tube bottoms, remove liquid in No. 2 test tubes, you can obtain No. 2 test tubes rapidly
In bulky grain ferromagnetism powder.
The ferromagnetism powder is one kind in iron powder, cobalt powder, nickel powder.
The ferromagnetism powder granule of different-grain diameter is moved downward from sustained height due to the effect of gravity in No. 2 test tubes, because
For square being directly proportional for sinking speed and particle diameter, therefore, big particle diameter ferromagnetism powder granule sinking speed first reaches No. 2 soon
The large-size particles for reaching No. 2 test tube inner bottom parts at first are adsorbed in test tube by test tube inner bottom part, the magnet for being placed in No. 2 test tube bottoms
Inner bottom part, the rapid suspension gone in No. 2 test tubes, you can obtain the bulky grain ferromagnetism powder in No. 2 test tubes.
Beneficial effects of the present invention：The present invention is more accurate to the sucking action of ferromagnetism powder by sedimentation and magnet
The big particle diameter powder granule in ferromagnetism powder is separated, sampling instrument is few, simple to operate, sampling rapid and detects
The data come can more accurately reflect the quality of product, so as to improve constantly the quality of product, meet client Geng Gao's
Demand.
Brief description of the drawings
Fig. 1 is sampling operation schematic diagram of the present invention.
Embodiment
Embodiment 1
（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；
（Two）0.1g nickel powders and 10ml ethanol are added into No. 1 test tube cleaned up and forms uniform by ultrasonic wave is scattered
Suspension；
（Three）Ethanol identity distance test tube mouthful is added in ethanol, test tube into No. 2 test tubes cleaned up apart from 1cm, with dry
Net dropper draws the suspension in No. 1 test tube, and then rapid drop 2 is dripped on the liquid level of No. 2 test tubes, and magnet is placed in into No. 2 examinations
Bottom of the tube, when suspension sinks down into No. 2 test tube lower curtates, removes liquid in No. 2 test tubes, you can obtain in No. 2 test tubes rapidly
Bulky grain nickel powder.
Embodiment 2
（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；
（Two）0.15g iron powders and 10ml ethanol is added into No. 1 test tube cleaned up to be formed by ultrasonic wave is scattered
Even suspension；
（Three）Ethanol identity distance test tube mouthful in ethanol, test tube is added into No. 2 test tubes cleaned up, apart from 1.2cm, to use
Clean dropper draws the suspension in No. 1 test tube, and then rapid drop 1 is dripped on the liquid level of No. 2 test tubes, and magnet is placed in into No. 2
Test tube bottom, when suspension sinks down into No. 2 test tube lower curtates, removes liquid in No. 2 test tubes, you can obtain in No. 2 test tubes rapidly
Bulky grain iron powder.
Embodiment 3
（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；
（Two）0.1g cobalt powders and 10ml ethanol are added into No. 1 test tube cleaned up and forms uniform by ultrasonic wave is scattered
Suspension；
（Three）Ethanol identity distance test tube mouthful in ethanol, test tube is added into No. 2 test tubes cleaned up, apart from 1.5cm, to use
Clean dropper draws the suspension in 1 No. 1 test tube of drop, and then rapid drop 1 is dripped on the liquid level of No. 2 test tubes, and magnet is placed in into 2
Number test tube bottom, when suspension sinks down into No. 2 test tube lower curtates, removes liquid in No. 2 test tubes, you can obtain No. 2 test tubes rapidly
In bulky grain cobalt powder.
Claims (1)
1. the sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder, it is characterised in that：Including following implementation steps：
（One）No. 1 test tube, No. 2 test tubes are cleaned up standby；
（Two）0.1-0.2g ferromagnetism powder and ethanol are added into No. 1 test tube cleaned up and disperses shape by ultrasonic wave
Into uniform suspension, the ferromagnetism powder is one kind in iron powder, cobalt powder, nickel powder；
（Three）Ethanol identity distance test tube mouthful in ethanol, test tube is added into No. 2 test tubes cleaned up, apart from 1-1.5cm, to use
Clean dropper draws the suspension in No. 1 test tube, and then rapid drop 1-2 drops are on the liquid level of No. 2 test tubes, by magnet
No. 2 test tube bottoms are placed in, when suspension sinks down into No. 2 test tube bottoms, liquid in No. 2 test tubes are removed rapidly, you can
To the bulky grain ferromagnetism powder in No. 2 test tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670807.6A CN104483165B (en) | 2014-11-21 | 2014-11-21 | The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670807.6A CN104483165B (en) | 2014-11-21 | 2014-11-21 | The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder |
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| CN104483165A CN104483165A (en) | 2015-04-01 |
| CN104483165B true CN104483165B (en) | 2017-07-28 |
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| CN110404674B (en) * | 2019-08-08 | 2021-04-20 | 青岛新正锂业有限公司 | Method for removing magnetic substances in lithium battery positive electrode material and detection method |
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| CN104483165A (en) | 2015-04-01 |
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