Supersmall-diameter cyclone and production method thereof

A manufacturing method and cyclone technology, which are applied in cyclone devices, devices whose axial directions of cyclones can be reversed, etc., can solve the problems of short-circuit turbulence at the pulp inlet, reducing separation accuracy, etc., and improve wear resistance. , High sorting efficiency, reducing the effect of short-circuit flow phenomenon under the top cover

Active Publication Date: 2018-01-23
李航
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the short circuit and turbulent flow of the pulp inlet at the lower end of the top cover is another problem existing in the existing cyclone. Due to the short circuit and turbulent flow, the unseparated material directly enters the overflow port, thereby reducing the separation accuracy.

Method used

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  • Supersmall-diameter cyclone and production method thereof
  • Supersmall-diameter cyclone and production method thereof
  • Supersmall-diameter cyclone and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method of making an ultra-small diameter cyclone is as follows:

[0032] Step 1: Weigh 90% of zirconia powder, 4% of neodymium oxide powder, 3% of alumina powder and 3% of aluminate coupling agent according to mass percentage;

[0033] Preferably, d of zirconia, neodymia and alumina 50 300nm, the purity of zirconia, neodymium oxide, alumina and aluminate coupling agent are all industrial grade, zirconia is preferably type III type I, refer to the national standard HG T 2773-2012, neodymium oxide can choose high-purity grade or ordinary Grade, the preferred purity is 99%, 99.5%, 99.9%, the alumina is preferably AO-2, refer to the national standard GBT24487-2009, the aluminate coupling agent is preferably aluminate coupling agent F-2, the d 50 Refers to the particle size corresponding to when the cumulative particle size distribution percentage of a sample reaches 50% (same as D50). In the present invention, d 50 The meanings are as above.

[0034] Step 2: put the we...

Embodiment 2

[0050] A method of making an ultra-small diameter cyclone is as follows:

[0051] Step 1: Weigh 95% of zirconia powder, 2% of neodymium oxide powder, 2% of alumina powder and 1% of aluminate coupling agent according to mass percentage;

[0052] d of zirconia, neodymia and alumina 50 Preferably 800nm.

[0053] The purity of zirconia, neodymium oxide, alumina and aluminate coupling agents are all industrial grade.

[0054] Step 2: put the weighed raw materials into a wet ball mill for ball milling and mixing, and the ball milling time is 4 hours;

[0055] Step 3: Put the ball-milled mixture into a vacuum drying oven for drying, set the temperature at 200°C, take it out of the drying oven after 8 hours, and measure the moisture content. When the moisture content is less than 0.5%, close the drying oven and wait for the mixture to dry. Take out after cooling to room temperature in a dry box;

[0056] Step 4: Break up the dried and agglomerated mixture, put it into a dry ball m...

Embodiment 3

[0070] A method of making an ultra-small diameter cyclone is as follows:

[0071] Step 1: Take by weighing 93% zirconia powder, 2.5% neodymium oxide powder, 2.5% alumina powder and 2% aluminate coupling agent according to mass percentage;

[0072] d of the zirconia, neodymia and alumina 50 Preferably it is 500 nm.

[0073] The purity of the zirconium oxide, neodymium oxide, aluminum oxide and aluminate coupling agent are all industrial grades.

[0074] Step 2: put the weighed raw materials into a wet ball mill for ball milling and mixing, and the ball milling time is 7 hours;

[0075] Step 3: Put the ball-milled mixture into a vacuum drying oven for drying, set the temperature at 350°C, take it out of the drying oven after 7 hours, and measure the moisture content. When the moisture content is less than 0.5%, close the drying oven and wait for the mixture to dry. Take out after cooling to room temperature in a dry box;

[0076] Step 4: Break up the dried and agglomerated m...

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Abstract

The invention relates to a supersmall-diameter cyclone for sorting ultrafine particles and a production method thereof. The supersmall-diameter cyclone which is wear-resistant, is toughened and is smooth in surface is prepared by a processing technology comprising the following steps: using zirconium oxide, neodymium oxide and aluminum oxide as raw materials, using an aluminate coupling agent as amodifying agent, uniformly mixing, performing dry-pressing moulding and performing high-temperature firing. The diameter of the large end face of the lower chamber of the prepared cyclone is 4.9-9.9mm, and a current stabilizing channel is arranged at a feed port, so that short-circuit current is effectively avoided; and the cyclone is used for sorting the ultrafine particles with the particle size range d50 of 0.1-1 micron, and the sorting efficiency is high.

Description

technical field [0001] The invention relates to a sorting device, in particular to an ultra-small-diameter cyclone for sorting ultra-fine particles and a manufacturing method thereof. Background technique [0002] Cyclone is a kind of separation and classification equipment widely used in ore dressing, clarification, solid-liquid separation and other industries. It adopts the principle of centrifugal sedimentation. When working, a pump is used to pump the mixed liquid from the upper feed pipe into the cyclone at a certain pressure. In the cyclone, relying on the difference in the density of the light and heavy phases or the difference in the weight of the coarse and fine particles under the centrifugal force, two vortices are formed in the cyclone, and the heavy phase is thrown to the wall and slides down the wall. The light phase flows out from the upper overflow port through the inner vortex to realize the separation of the heavy phase and the light phase. [0003] With t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622B04C5/081
Inventor 李航
Owner 李航
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