CN105498944A - Overflow-circulation classification method for diamond micro-powder - Google Patents
Overflow-circulation classification method for diamond micro-powder Download PDFInfo
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- CN105498944A CN105498944A CN201510853665.1A CN201510853665A CN105498944A CN 105498944 A CN105498944 A CN 105498944A CN 201510853665 A CN201510853665 A CN 201510853665A CN 105498944 A CN105498944 A CN 105498944A
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- water
- overflow
- diadust
- precipitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
- B03B5/66—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type of the hindered settling type
Abstract
The invention discloses an overflow-circulation classification method for diamond micro-powder, belongs to the technical field of diamond production, and solves the defects of low production efficiency, large particle size distribution and high impurity content in the prior art. The overflow-circulation classification method for the diamond micro-powder comprises the following steps: (1) setting a water pressure and a flow rate of an overflow, and carrying out constant-pressure water supply by a constant-pressure water supply system; (2) carrying out overflow classification for the diamond micro-powder by an overflow classification system; and (3) carrying out precipitation classification by a precipitation water storage system to obtain the diamond micro-powder with the needed particle sizes. The method disclosed by the invention has high production efficiency and less interference of human factors; and the produced diamond micro-powder are centralized in distribution, uniform in particle sizes, and low in impurity content.
Description
Technical field
The present invention relates to a kind of diadust overflow circulating stage division, belong to diamond production technical field.
Background technology
The method for separating of traditional diadust to feed intake 5000 carats of scales that add water at 5000ml beaker or Plastic Drum, utilizes that perspex bar hand operated mixing is counter again to be stirred, tranquil to the water surface, cleans wall of cup afterwards.The sedimentation time is set by granule size timing clock, after the sedimentation time arrives, manual withdrawal desired particle size, add water, stir, iterative cycles like this, this stage division efficiency is very low, the product cut size distribution obtained is larger, particle is uneven, and impurity is more, and the time error that human factor causes, the pollutant effects such as dust in air all may cause the pollution of diadust, in addition, this stage division needs to use a large amount of clean waters, causes the serious waste of water resource.
Summary of the invention
The object of the present invention is to provide a kind of diadust overflow circulating stage division, can effective improve production efficiency and product quality, the diadust size distribution of producing is concentrated, and uniform particles, impurity is few.
Described diadust overflow circulating stage division, comprises the following steps:
(1) constant pressure water supply system: setting overflow hydraulic pressure and flow constant pressure water supply
According to the particle diameter of the diadust of required classification, regulate the overflow hydraulic pressure of pressure sensor and the excess flow of electromagnetic flowmeter in constant pressure water supply system, open water pump and supply water in the overflow ladle of overflow size separation system;
(2) overflow size separation system: diadust overflow size separation
Adding deionized water and stirring by needing the diadust of classification becomes slip to drop in overflow ladle, deionized water is added in overflow ladle, the height of water is no more than Overflow Cone, when water pump starts after overflow ladle water supply, the diadust of required particle diameter is subject to buoyancy of water and moves upward and enter Overflow Cone, then enters in the precipitation water butt of precipitation water storage system through discharge nozzle pipeline;
(3) water storage system is precipitated: precipitation fractionation obtains the diadust of required particle diameter
Deionized water is filled it up with in precipitation water butt, and get up with placed in series, ensure the circulation of water, and build lid, after the water being mingled with diadust enters precipitation water butt, diadust is gradually in precipitation water butt precipitation, and when water flow to last group precipitation water butt, diadust is thoroughly separated with water, water is back to constant pressure water supply system, and namely the diadust precipitated in collecting precipitation water butt obtains the diadust of required particle diameter.
In overflow ladle described in step (2), the concentration of diadust is no more than 30 ° of B é.
Precipitate water butt in described precipitation water storage system and have 4 groups or more.
The water inlet of described precipitation water butt is located at precipitation water butt top, and delivery port is located at precipitation water butt bottom.
Angle bottom described overflow ladle is 35 °.
Compared with prior art the invention has the beneficial effects as follows:
The present invention is according to diadust because grain shape varies in size, and surface area is different, is subject to buoyancy difference that water upwards impacts carries out classification when constant flow.Angle bottom overflow ladle of the present invention is 35 °, the water entering overflow ladle can be made dispersed in angle, make material in bucket be subject to identical water flow impact pressure, thus more be conducive to the dispersion classification of material.Precipitation water storage system is made up of many group precipitations water butt and is furnished with communicating pipe, and precipitation water butt height of water level is consistent to utilize siphon principle to ensure, diamond density is 3.5g/cm
3be greater than the density of water, in the precipitation water storage system that current are slower, diadust can sedimentation gradually, when water flow to last group precipitation water butt, material is thoroughly separated with water, and the water that the present invention uses flows into precipitation water storage system by overflow size separation system, then sends into overflow size separation system by constant pressure water supply system, thus the Infinite Cyclic classification reaching water uses, not only avoid the waste of water resource, reduce the production cost of enterprise, and be conducive to continuous prodution.The inventive method production efficiency improves greatly, and interference from human factor is few, and the diadust size distribution of producing is concentrated, and uniform particles, impurity is few.
Accompanying drawing explanation
The grain size analysis examining report of Fig. 1 to be particle diameter prepared by the inventive method be 8-12 μm of product;
The grain size analysis examining report of Fig. 2 to be particle diameter prepared by the inventive method be 30-40 μm of product.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1
Described diadust overflow circulating stage division, comprises the following steps:
(1) constant pressure water supply system: setting overflow hydraulic pressure and flow constant pressure water supply
According to the particle diameter of the diadust of required classification, regulate the overflow hydraulic pressure of pressure sensor and the excess flow of electromagnetic flowmeter in constant pressure water supply system, open water pump to supply water in the overflow ladle of overflow size separation system, wherein overflow hydraulic pressure is 0.3MPa, and the diadust excess flow of different-grain diameter is as following table:
| Particle diameter μm | Excess flow m 3/h | Particle diameter μm | Excess flow m 3/h |
| 3-6 | 0.00967 | 10-20 | 0.15467 |
| 4-8 | 0.01933 | 20-30 | 0.30935 |
| 5-10 | 0.03802 | 30-40 | 0.60581 |
| 8-12 | 0.07573 | 36-54 | 1.23739 |
(2) overflow size separation system: diadust overflow size separation
Adding deionized water and stirring by needing the diadust of classification becomes slip to drop in overflow ladle, deionized water is added in overflow ladle, the height of water is no more than Overflow Cone, in overflow ladle, the concentration of diadust is 25 ° of B é, when water pump starts after overflow ladle water supply, the diadust of required particle diameter is subject to buoyancy of water and moves upward and enter Overflow Cone, then enter through discharge nozzle pipeline in the precipitation water butt of precipitation water storage system, the water inlet of wherein said precipitation water butt is located at precipitation water butt top, delivery port is located at precipitation water butt bottom, angle bottom described overflow ladle is 35 °.
(3) water storage system is precipitated: precipitation fractionation obtains the diadust of required particle diameter
5 group precipitation water butts are provided with in precipitation water storage system, deionized water is filled it up with in precipitation water butt, and get up with placed in series, ensure the circulation of water, and build lid, after the water being mingled with diadust enters precipitation water butt, diadust is gradually in precipitation water butt precipitation, when water flow to last group precipitation water butt, diadust is thoroughly separated with water, water is back to constant pressure water supply system, and namely the diadust precipitated in collecting precipitation water butt obtains the diadust of required particle diameter.
Embodiment 2
Described diadust overflow circulating stage division, comprises the following steps:
(1) constant pressure water supply system: setting overflow hydraulic pressure and water yield constant pressure water supply
Overflow size separation particle diameter is the diadust of 8-12 μm, and the overflow hydraulic pressure regulating pressure sensor in constant pressure water supply system is 0.3MPa, and the excess flow of electromagnetic flowmeter is 0.07573m
3/ h, opens water pump and supplies water in the overflow ladle of overflow size separation system;
(2) overflow size separation system: diadust overflow size separation
Adding deionized water and stirring by needing the diadust of classification becomes slip to drop in overflow ladle, deionized water is added in overflow ladle, the height of water is no more than Overflow Cone, in overflow ladle, the concentration of diadust is 20 ° of B é, when water pump starts after overflow ladle water supply, particle diameter is that the diadust of 8-12 μm is subject to buoyancy of water and moves upward and enter Overflow Cone, then enters in the precipitation water butt of precipitation water storage system through discharge nozzle pipeline;
(3) water storage system is precipitated: precipitation fractionation obtains the diadust of required particle diameter
6 group precipitation water butts are provided with in precipitation water storage system, deionized water is filled it up with in 6 group precipitation water butts, and get up with placed in series, ensure the circulation of water, and build lid, after the water being mingled with diadust enters precipitation water butt, diadust is gradually in precipitation water butt precipitation, when water flow to the 6th group precipitation water butt, diadust is thoroughly separated with water, water is back to constant pressure water supply system, and namely the diadust precipitated in collecting precipitation water butt obtains the diadust that particle diameter is 8-12 μm.
Be that the diadust of 8-12 μm utilizes Ku Erte electric-resistivity method Particle Size Analyzer to carry out grain size analysis by the particle diameter obtained, examining report is as Fig. 1, C.V value is lower is as seen from the figure 9.87%, size distribution is concentrated, be better than the product of similar model, granularity D50 is 8.508 μm, meets the granularity requirements of the mainstream product in the market.
Embodiment 3
Described diadust overflow circulating stage division, comprises the following steps:
(1) constant pressure water supply system: setting overflow hydraulic pressure and water yield constant pressure water supply
Overflow size separation particle diameter is the diadust of 30-40 μm, and the overflow hydraulic pressure regulating pressure sensor in constant pressure water supply system is 0.3MPa, and the excess flow of electromagnetic flowmeter is 0.60581m
3/ h, opens water pump and supplies water in the overflow ladle of overflow size separation system;
(2) overflow size separation system: diadust overflow size separation
Adding deionized water and stirring by needing the diadust of classification becomes slip to drop in overflow ladle, deionized water is added in overflow ladle, the height of water is no more than Overflow Cone, in overflow ladle, the concentration of diadust is 30 ° of B é, when water pump starts after overflow ladle water supply, particle diameter is that the diadust of 30-40 μm is subject to buoyancy of water and moves upward and enter Overflow Cone, then enters in the precipitation water butt of precipitation water storage system through discharge nozzle pipeline;
(3) water storage system is precipitated: precipitation fractionation obtains the diadust of required particle diameter
4 group precipitation water butts are provided with in precipitation water storage system, deionized water is filled it up with in 4 group precipitation water butts, and get up with placed in series, ensure the circulation of water, and build lid, after the water being mingled with diadust enters precipitation water butt, diadust is gradually in precipitation water butt precipitation, when water flow to the 4th group precipitation water butt, diadust is thoroughly separated with water, water is back to constant pressure water supply system, and namely the diadust precipitated in collecting precipitation water butt obtains the diadust that particle diameter is 30-40 μm.
Be that the diadust of 30-40 μm utilizes Ku Erte electric-resistivity method Particle Size Analyzer to carry out grain size analysis by the particle diameter obtained, examining report is as Fig. 2, C.V value is lower is as seen from the figure 10.7%, size distribution is concentrated, be better than the product of similar model, granularity D50 is 35.69 μm, meets the granularity requirements of the mainstream product in the market.
Claims (5)
1. a diadust overflow circulating stage division, is characterized in that comprising the following steps:
(1) constant pressure water supply system: setting overflow hydraulic pressure and flow constant pressure water supply
According to the particle diameter of the diadust of required classification, regulate the overflow hydraulic pressure of pressure sensor and the excess flow of electromagnetic flowmeter in constant pressure water supply system, open water pump and supply water in the overflow ladle of overflow size separation system;
(2) overflow size separation system: diadust overflow size separation
Adding deionized water and stirring by needing the diadust of classification becomes slip to drop in overflow ladle, deionized water is added in overflow ladle, the height of water is no more than Overflow Cone, when water pump starts after overflow ladle water supply, the diadust of required particle diameter is subject to buoyancy of water and moves upward and enter Overflow Cone, then enters in the precipitation water butt of precipitation water storage system through discharge nozzle pipeline;
(3) water storage system is precipitated: precipitation fractionation obtains the diadust of required particle diameter
Deionized water is filled it up with in precipitation water butt, and get up with placed in series, ensure the circulation of water, and build lid, after the water being mingled with diadust enters precipitation water butt, diadust is gradually in precipitation water butt precipitation, and when water flow to last group precipitation water butt, diadust is thoroughly separated with water, water is back to constant pressure water supply system, and namely the diadust precipitated in collecting precipitation water butt obtains the diadust of required particle diameter.
2. diadust overflow circulating stage division according to claim 1, is characterized in that: in the overflow ladle described in step (2), the concentration of diadust is no more than 30 ° of B é.
3. diadust overflow circulating stage division according to claim 1, is characterized in that: precipitating water butt in described precipitation water storage system has 4 groups or more.
4. the diadust overflow circulating stage division according to the arbitrary claim of claim 1-3, is characterized in that: the water inlet of described precipitation water butt is located at precipitation water butt top, and delivery port is located at precipitation water butt bottom.
5. diadust overflow circulating stage division according to claim 4, is characterized in that: the angle bottom described overflow ladle is 35 °.
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| CN201510853665.1A CN105498944A (en) | 2015-11-27 | 2015-11-27 | Overflow-circulation classification method for diamond micro-powder |
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| CN201510853665.1A CN105498944A (en) | 2015-11-27 | 2015-11-27 | Overflow-circulation classification method for diamond micro-powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109956475A (en) * | 2017-12-23 | 2019-07-02 | 大连天宏硼业有限公司 | A kind of method of purification of boron carbide powder |
| CN112191360A (en) * | 2020-10-09 | 2021-01-08 | 河南工业大学 | Diamond powder particle size grading method |
| CN116273431A (en) * | 2022-12-07 | 2023-06-23 | 南京金瑞立丰硬质材料科技有限公司 | Continuous grading device and grading method for diamond micro powder |
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| CN101705076A (en) * | 2009-09-30 | 2010-05-12 | 汉寿金诚研磨材有限公司 | Method for producing green silicon carbide FEPA F P |
| CN101811088A (en) * | 2010-04-15 | 2010-08-25 | 连云港东渡碳化硅有限公司 | Method for grading inside overflow of silicon carbide super micro powder |
| CN202316087U (en) * | 2011-12-08 | 2012-07-11 | 河南省惠丰金刚石有限公司 | Automatic grading water recycling device for diamond micro powder |
| CN202497927U (en) * | 2012-03-13 | 2012-10-24 | 潍坊汇成新材料科技有限公司 | Flow control device for silicon carbide powder overflow classifier |
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| CN101705076A (en) * | 2009-09-30 | 2010-05-12 | 汉寿金诚研磨材有限公司 | Method for producing green silicon carbide FEPA F P |
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| CN202316087U (en) * | 2011-12-08 | 2012-07-11 | 河南省惠丰金刚石有限公司 | Automatic grading water recycling device for diamond micro powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109956475A (en) * | 2017-12-23 | 2019-07-02 | 大连天宏硼业有限公司 | A kind of method of purification of boron carbide powder |
| CN112191360A (en) * | 2020-10-09 | 2021-01-08 | 河南工业大学 | Diamond powder particle size grading method |
| CN116273431A (en) * | 2022-12-07 | 2023-06-23 | 南京金瑞立丰硬质材料科技有限公司 | Continuous grading device and grading method for diamond micro powder |
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| CB03 | Change of inventor or designer information |
Inventor after: Gong Zhigang Inventor after: Hao Wenhu Inventor after: Gong Xingyu Inventor after: Chen Guanyu Inventor after: Yu Qi Inventor after: Yan Fanlong Inventor after: Yin Lina Inventor before: Gong Zhigang Inventor before: Zhou Qiang Inventor before: Hao Wenhu |
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Effective date of registration: 20180412 Address after: 276700 Tai'an Road, Linshu County, Linyi City, Shandong Province Applicant after: Shandong Shantian New Material Technology Co Ltd Applicant after: Hillside plot grinding-material Co., Ltd Address before: 276700 Linshu City, Linyi province Linshu County, the town of the village after the high lake Applicant before: Hillside plot grinding-material Co., Ltd |
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Application publication date: 20160420 |
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