CN106362845A - Extraction method for diamonds in old tool bits and reusing process of produced alloy powder - Google Patents
Extraction method for diamonds in old tool bits and reusing process of produced alloy powder Download PDFInfo
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- CN106362845A CN106362845A CN201610790251.3A CN201610790251A CN106362845A CN 106362845 A CN106362845 A CN 106362845A CN 201610790251 A CN201610790251 A CN 201610790251A CN 106362845 A CN106362845 A CN 106362845A
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- powder
- diamond
- mesh
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- old
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The invention discloses an extraction method for diamonds in old tool bits. The method includes the following steps that waste materials of industrial old tool bits on the market are collected and heated under normal atmospheric pressure, and heating is completed when alloy becomes pink; the heated waste materials are polished and smashed through a high-speed smashing machine; and the smashed waste materials are separated, the diamonds are screened out through a magnetic separator, when the smashed waste materials pass through the interior of the magnetic separator, alloy powder is magnetically attracted, the diamonds are not magnetized, and the separation purpose is realized. The invention further provides a reusing process of the alloy powder produced in the extraction method. The raw material cost can be reduced by 70% through one diamond extraction link. Compared with the mode that traditional and existing enterprises use new materials as raw materials for manufacturing tool bit products, the extraction method and the reusing process are advantageous in that the enterprise cost can be reduced by 30-35% in the whole procedure from purchase of old materials to production of new products.
Description
Technical field
The invention belongs to environmental protection technical field, specifically, it is related to a kind of extracting method of diamond in old cutter head
And the alloyed powder producing recycles technique.
Background technology
China is strengthening to the attention degree of environmental protection, and country proposes requirements at the higher level, a side to enterprise development in terms of environmental protection
Face industrial waste is constantly piled up, and on the other hand traditional processing method causes to pollute in a large number, because chemical treating process needs to use
To strong acid, including hydrochloric acid, sulphuric acid, nitric acid, and one ton of waste material at least needs six tons of acid in addition it is also necessary to substantial amounts of water, there is cost
High and with serious pollution problem, this acid corrosion industry is also that current China forbids strictly.
China is metallic ore import big country, uses up a large amount of foreign exchanges, raw material Ore dependence on import, the waste material of discharge every year
Many；Quanzhou is manufacturing industry City Regions again, and this waste material is a lot, and through investigating, good Fujian, Guangdong is the most region of this kind of waste material.
Old cutter head alloy material main component is element and the people such as copper 25%, ferrum 68%, nickel 4%, stannum 1.5%, 1.5%
Make diamond etc., the traditional method of the old cutter head of process that the past continues to use always is: with the method for pickling diamond, silver, copper
Elect respectively, the first step will 1:6 be carried out, that is, 1 ton of waste material need 6 tons of strong acid to carry out pickling, just can wash out diamond,
Because the resistance to strong acid of diamond, will not chemical reaction fall, so the first step first washes out diamond, second step refines silver also
With materials such as sour salt addings, silver is the bridging agent of cutter head and mill, is tightly bonded above cutter head, uses method of reducing afterwards more respectively
Refine other metals, leave a large amount of chemical reaction products, inside its waste water, contain remaining heavy metal, pollute environment, now
Many so enterprises stop this work or hide to inside remote mountains under the pressure of environmental protection pressure and do.
Through the investigation over 3 years and experiment test, this project domestic at present is still blank, environmental protection aspect production technology
Problem is the more popular problem of research field, but current China does not also have successful example to occur aborning, does not more have
Related technical standard.
The technology production process cost of labor of existing waste and old utilization is high, and high labor intensive, since it is desired that each workman keeps
One machine, carries out feeding according to heating polishing situation, and machine polishing sound is big, produces heat, power consumption hyperpyrexia, needs to have been continued
Kind, early investment and improve equipment and need fund huge.Existing a set of reasonable improvement project at present, treats that the later stage improves and produces
Scale used device again.
Content of the invention
In view of this, the present invention is directed to above-mentioned problem, there is provided the extracting method of diamond and product in a kind of old cutter head
Raw alloyed powder recycles technique, and the method for realization environmental protection makes waste again be used, being capable of large-scale production.
In order to solve above-mentioned technical problem, the invention discloses in a kind of old cutter head diamond extracting method, including with
Lower step:
Step 1, heating: the waste and scrap collecting industrial old cutter head on market heats under normal pressure atmospheric pressure, alloy occurs
When pink color, heating completes；
Step 2, the waste and scrap after heating is polished with high speed disintegrator and pulverized, under normal pressure, broken into 100-200
Purpose granule；
Step 3, pass through screening machine screening the granule of 100-200 mesh, again pulverize less than the granule of 100 mesh；
Step 4, by pulverize after waste and scrap carry out separate, with magnetic separator, diamond mesh is elected, when pulverize after
Waste and scrap when magnetic separator is internal, lived by magnetic, and diamond does not go up magnetic by alloyed powder, reaches and separates purpose.
Further, step 1) in heating-up temperature be: 800-900 DEG C；Heating power is 90kw-150kw, the holding of heating
The continuous time is 10-20s.
Further, step 2) in high speed disintegrator rotating speed be 2500-2980r/min, power be 90kw-120kw.
Further, step 4) in separative power be 400-500 watt, rotating speed be 10-20r/min.
The present invention also provides a kind of recycling technique of the alloyed powder being prepared by above-mentioned method, walks including following
Rapid:
Step 1, alloy powder is pulverized further, under normal pressure, break into the powder of 200-300 mesh；Powder 200-300 mesh
Being packed in end, again grinds less than the powder of 200 mesh, then more packed powder is handled as follows: in reduction furnace
The inside plus nitrogen, temperature control 800-850 DEG C, 11--12 hour completes 2-3 ton powder reduction.
Step 2, by step 1) in powder after reduction treatment and diamond mixing, alloy powder proportioning 14kg per ton
Diamond machine automatic stirring, Full-automatic cold is pressed into blank, and then hot repressing sizing, prepares cutter.
Compared with prior art, the present invention can obtain including following technique effect:
1) present invention saves ore resource, make alloy material without new metal, realize the recycling of old material,
Maintain the proportioning of various metals in alloying component in original cutter head.
2) present invention does not have the pollution to environment of strong acid and its product, realizes environmental protection industry development, meets national policy
Direction.
3) cost of raw material 70% about can be reduced with the link that the method extracts diamond.Compare traditional and existing
Enterprise's raw material all manufactures cutter head product with new material, and the present invention can to the whole process producing new product from the old material of purchase
Save entreprise cost 30%-35%.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above technique effect simultaneously.
Specific embodiment
To describe embodiments of the present invention below in conjunction with embodiment in detail, thereby to the present invention how application technology handss
Section is solving technical problem and to reach realizing process and fully understanding and implement according to this of technology effect.
The present invention provides a kind of extracting method of diamond in old cutter head, comprises the following steps:
In step 1, collection market, the waste and scrap of industrial old cutter head is heated to 800-900 DEG C under normal pressure atmospheric pressure, institute
It is high-frequency electromagnetic induction heating furnace with heater, heating power is 90kw-150kw, temperature required being heated to by room temperature
Persistent period is 10-20s；Heating when pink color in alloy to be completed；
Step 2, the waste and scrap after heating is polished with high speed disintegrator and pulverized, under normal pressure, broken into 100-200
Purpose granule；The rotating speed of high speed disintegrator is 2500-2980r/min, and power is 90kw-120kw；
Step 3, pass through screening machine screening the granule of 100-200 mesh, again pulverize less than the granule of 100 mesh；
Step 4, by pulverize after waste and scrap carry out separate, with magnetic separator, diamond mesh is elected, separative power is
400-500 watt, rotating speed is 10-20r/min；When powder is internal through magnetic separator, alloyed powder is lived by magnetic, and diamond is not gone up
Magnetic, just falls down, and reaches and separates purpose.
The present invention also provides a kind of recycling technique of the above-mentioned alloyed powder preparing, and comprises the following steps:
1) alloyed powder is pulverized further, under normal pressure, break into the powder of 200-300 mesh；The powder of 200-300 mesh is carried out
Packing, again grinds less than the powder of 200 mesh, then more packed powder is handled as follows: adds nitrogen in reduction furnace
Gas, temperature control 800-850 DEG C, 11--12 hour completes 2-3 ton powder reduction；
2) by step 1) in powder after reduction treatment and diamond mixing, alloy powder proportioning 14kg per ton about gold
Hard rock machine automatic stirring, Full-automatic cold is pressed into blank, and then hot repressing sizing, prepares cutter.
In this method, the span 90kw 150kw of the power of coreless induction furnace, because the too little heating of power is slow, the time becomes
This height, power is too greatly it is not easy to control temperature, temperature is too high to damage diamond, or is allowed to carbonization；The power of pulverizer
Span 90kw 120kw, because the material sent after the too little heating of power can be piled up, pulverizes speed slowly, the too big machine of power
Too hot, machine is easily damaged；Span 10--20 of the revolution of magnetic separator turns, and revolution is too little, and magnetic separation speed is slow, and impact is produced
Amount, revolution is too big, and powder can be got rid of by centrifugal force, affects screening effect.
Embodiment 1
A kind of method extracting diamond from cutter head waste material, comprises the following steps: on collection market, industrial old cutter head is useless
Old material is heated to 850 DEG C under normal pressure atmospheric pressure, and heater used is high-frequency electromagnetic induction heating furnace, and heating power is
During 90kw, the temperature required persistent period is being heated to for 20s by room temperature；Heating when pink color in alloy to be completed；
By the waste and scrap after heating high speed disintegrator polishing and pulverizing, under normal pressure, break into the granule of 100-200 mesh；High speed disintegrator
Rotating speed be 2780r/min, power be 100kw；By screening machine screening the granule of 100-200 mesh, less than 100 mesh
Granule again pulverize；Waste and scrap after pulverizing is carried out separating, with magnetic separator, diamond mesh is elected, separative power is
450 watts, rotating speed is 15r/min；When powder is internal through magnetic separator, alloyed powder is lived by magnetic, and diamond does not go up magnetic, just falls down
Come, reach and separate purpose.Alloyed powder is pulverized further, under normal pressure, breaks into the powder of 200-300 mesh；Powder 200-300 mesh
Being packed in end, again grinds less than the powder of 200 mesh, then more packed powder is handled as follows: in reduction furnace
In plus nitrogen, 825 DEG C of temperature control, complete within 11.6 hours 2-3 ton powder reduction；Powder after reduction treatment and diamond are mixed
Close, alloy powder proportioning 14kg per ton about diamond machine automatic stirring, Full-automatic cold is pressed into blank, and then hot repressing is fixed
Type, prepares cutter.
Embodiment 2
A kind of method extracting diamond from cutter head waste material, comprises the following steps: on collection market, industrial old cutter head is useless
Old material is heated to 800 DEG C under normal pressure atmospheric pressure, and heater used is high-frequency electromagnetic induction heating furnace, and heating power is
During 150kw, the temperature required persistent period is being heated to for 11s by room temperature；Heating when pink color in alloy to be completed；
Waste and scrap after heating is polished with high speed disintegrator and is pulverized, under normal pressure, broken into the granule of 100-200 mesh；High speed powder
The rotating speed of broken machine is 2890r/min, and power is 90kw；By screening machine screening the granule of 100-200 mesh, it is less than
The granule of 100 mesh is pulverized again；Waste and scrap after pulverizing is carried out separating, with magnetic separator, diamond mesh is elected, separate
Power is 400 watts, and rotating speed is 10r/min；When powder is internal through magnetic separator, alloyed powder is lived by magnetic, and diamond does not go up magnetic,
Just fall down, reach and separate purpose.Alloyed powder is pulverized, under normal pressure, is broken into the powder of 200-300 mesh；200-300 mesh
Powder packed, again grind less than the powder of 200 mesh, then more packed powder be handled as follows: plus nitrogen
Gas, 800 DEG C of temperature control, complete within 12 hours 2-3 ton powder reduction；By the powder after reduction treatment and diamond mixing, machine
Automatic stirring, Full-automatic cold is pressed into blank, and then hot repressing sizing, prepares cutter.
Embodiment 3
A kind of method extracting diamond from cutter head waste material, comprises the following steps: on collection market, industrial old cutter head is useless
Old material is heated to 900 DEG C under normal pressure atmospheric pressure, and heater used is high-frequency electromagnetic induction heating furnace, and heating power is
During 120kw, the temperature required persistent period is being heated to for 16s by room temperature；Heating when pink color in alloy to be completed；
Waste and scrap after heating is polished with high speed disintegrator and is pulverized, under normal pressure, broken into the granule of 100 mesh；High speed disintegrator
Rotating speed be 2500r/min, power be 120kw；By screening machine screening the granule of 100-200 mesh, less than 100 mesh
Granule again pulverize；Waste and scrap after pulverizing is carried out separating, with magnetic separator, diamond mesh is elected, separative power is
500 watts, rotating speed is 20r/min；When powder is internal through magnetic separator, alloyed powder is lived by magnetic, and diamond does not go up magnetic, just falls down
Come, reach and separate purpose.Alloyed powder is pulverized, under normal pressure, is broken into the powder of 200-300 mesh；Powder 200-300 mesh
Packed, again ground less than the powder of 200 mesh, then more packed powder is handled as follows: plus nitrogen, temperature
Control 850 DEG C, complete within 11 hours 2-3 ton powder reduction；By the powder after reduction treatment and diamond mixing, machine automatic stirring
Mix, Full-automatic cold is pressed into blank, then hot repressing sizing, prepares cutter.
The use data of new product and test effect are as follows: batch is had using our enterprises of product: Nan'an's ring
Ballstone material abrasive material company limited, Quanzhou culminant star stone material Tools Co., ltd, Guangdong also several enterprise's trial period, through downstream
Enterprise more than 1 year the use of feedback result is our product quality and robustness is poor unlike the product on market before, compare city
The brand product having on field uses that aggregative indicator is not bad, and aggregative indicator is mainly reflected in: formula sharpness, abrasion resistance, logical
With property etc., our dise knife head polishing granite, sharpness reaches 300 square meters, and sharp speed is higher by 25% than common, wear-resisting
Degree can reach 350-400 square meter, and extensively, this index refers mainly to the strong granite of hardness of polishing to versatility, as polishing Dali
As above index can increase by 3 times to stone；Our production cost is reduced to traditional 30%--35%.
Described above illustrate and describes some preferred embodiments of invention, but as previously mentioned it should be understood that inventing not
It is confined to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification
And environment, and can be carried out by the technology or knowledge of above-mentioned teaching or association area in invention contemplated scope described herein
Change.And the change that those skilled in the art are carried out and change without departing from the spirit and scope of invention, then all should weighed appended by invention
In the protection domain that profit requires.
Claims (5)
1. in a kind of old cutter head the extracting method of diamond it is characterised in that comprising the following steps:
Step 1, heating: the waste and scrap collecting industrial old cutter head on market heats under normal pressure atmospheric pressure, alloy occurs pink
When color color, heating completes；
Step 2, the waste and scrap after heating is polished with high speed disintegrator and pulverized, under normal pressure, broken into 100-200 purpose
Granule；
Step 3, pass through screening machine screening the granule of 100-200 mesh, again pulverize less than the granule of 100 mesh；
Step 4, by pulverize after waste and scrap carry out separate, with magnetic separator, diamond mesh is elected, when pulverize after waste and old
Material when magnetic separator is internal, lived by magnetic, and diamond does not go up magnetic by alloyed powder, reaches and separates purpose.
2. in old cutter head according to claim 1 the extracting method of diamond it is characterised in that described step 1) in
Heating-up temperature is: 800-900 DEG C；Heating power is 90kw-150kw, and the persistent period of heating is 11-20s.
3. according to claim 1 extract the method for diamond it is characterised in that described step 2 from cutter head waste material)
High speed disintegrator rotating speed be 2500-2980r/min, power be 90kw-120kw.
4. in old cutter head according to claim 1 the extracting method of diamond it is characterised in that described step 4) in
Separative power is 400-500 watt, and rotating speed is 10-20r/min.
5. a kind of recycling technique of the alloy powder being prepared by the method described in claim 1 is it is characterised in that include
Following steps:
1) alloyed powder is pulverized further, under normal pressure, break into the powder of 200-300 mesh；The powder of 200-300 mesh is packed,
Again grind less than the powder of 200 mesh, then more packed powder is handled as follows: add nitrogen, temperature in reduction furnace
Degree controls 800-850 DEG C, and 11-12 hour completes 2-3 ton powder reduction；
2) by step 1) in powder after reduction treatment and diamond mixing, machine automatic stirring, Full-automatic cold is pressed into blank, so
Hot repressing sizing, prepares cutter afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790251.3A CN106362845B (en) | 2016-08-31 | 2016-08-31 | The extracting method of diamond and the alloyed powder of generation recycle technique in old cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790251.3A CN106362845B (en) | 2016-08-31 | 2016-08-31 | The extracting method of diamond and the alloyed powder of generation recycle technique in old cutter head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106362845A true CN106362845A (en) | 2017-02-01 |
| CN106362845B CN106362845B (en) | 2019-11-01 |
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| CN201610790251.3A Expired - Fee Related CN106362845B (en) | 2016-08-31 | 2016-08-31 | The extracting method of diamond and the alloyed powder of generation recycle technique in old cutter head |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266865A (en) * | 2000-03-21 | 2001-09-28 | Sanyo Electric Co Ltd | Manufacturing method of hydrogen storage alloy electrode |
| CN1404913A (en) * | 2002-11-07 | 2003-03-26 | 华北工学院 | Pollution-free gas-phase oxidation separation purification method for artificial diamond |
| CN101844145A (en) * | 2010-04-06 | 2010-09-29 | 邱南海 | Method for extracting Mulgrain sand by waste industrial refuse |
| CN102049521A (en) * | 2010-12-27 | 2011-05-11 | 杭州天石硬质合金有限公司 | Process for crushing waste hard alloy |
| CN102530944A (en) * | 2012-03-16 | 2012-07-04 | 河南醒狮高新技术股份有限公司 | Method for manufacturing silicon carbide blade material for grinding and polishing sapphire and special grading device |
-
2016
- 2016-08-31 CN CN201610790251.3A patent/CN106362845B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266865A (en) * | 2000-03-21 | 2001-09-28 | Sanyo Electric Co Ltd | Manufacturing method of hydrogen storage alloy electrode |
| CN1404913A (en) * | 2002-11-07 | 2003-03-26 | 华北工学院 | Pollution-free gas-phase oxidation separation purification method for artificial diamond |
| CN101844145A (en) * | 2010-04-06 | 2010-09-29 | 邱南海 | Method for extracting Mulgrain sand by waste industrial refuse |
| CN102049521A (en) * | 2010-12-27 | 2011-05-11 | 杭州天石硬质合金有限公司 | Process for crushing waste hard alloy |
| CN102530944A (en) * | 2012-03-16 | 2012-07-04 | 河南醒狮高新技术股份有限公司 | Method for manufacturing silicon carbide blade material for grinding and polishing sapphire and special grading device |
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