CN1274428C - Recovering used diamond sawweb by inert gas atomization condensation method - Google Patents
Recovering used diamond sawweb by inert gas atomization condensation method Download PDFInfo
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- CN1274428C CN1274428C CNB2004100056037A CN200410005603A CN1274428C CN 1274428 C CN1274428 C CN 1274428C CN B2004100056037 A CNB2004100056037 A CN B2004100056037A CN 200410005603 A CN200410005603 A CN 200410005603A CN 1274428 C CN1274428 C CN 1274428C
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- diamond
- saw blade
- inert gas
- powder
- sawweb
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The present invention relates to a method for recovering a used saw blade used for cutting diamonds, which comprises that the block-shaped saw blade used for cutting the diamonds is converted into powder. The powder is obtained by the following steps: resmelting, atomizing and condensing.
Description
Affiliated technical field
The present invention relates to a kind of recovery method of the saw blade of diamond cut efficiently waste product, be mainly used in the diamond saw blade reclaiming of metal adhesive.
Background technology
The diamond cut saw blade is exactly that metal is made the binding agent diamond, diamond dust is the cutting grinding wheel of abrasive material.Its removal process is exactly the process that the waste product saw blade is converted into again available resources.At present, method to the diamond saw blade reclaiming of metal adhesive is with hydrochloric acid it to be dissolved, be that wherein diamond grit precipitates, the solution of metal ion is drained as waste water or is become oxide to become metal dust with hydrogen reducing again its evaporate to dryness roasting, and the diamond grit of recovery and metal dust will be used to produce saw blade.Because utilize chemical reaction to reclaim, this method need be used strong acid, cost is higher, can cause certain environmental pollution simultaneously, and the metal ingredient of recovery and primitive component relatively have certain loss.
Summary of the invention
In order to overcome the deficiency that existing recovery method can cause environmental pollution and composition loss, the invention provides a kind of new recovery method, this method can not only successfully change into the mixed-powder that can reuse with the saw blade that gives up, and physical change only takes place, thereby environmental pollution and composition loss have been avoided in removal process.
The technical solution adopted for the present invention to solve the technical problems is: by remelting, atomizing, cool off this three the step make it change powder again into.Contain metal in such saw blade and account for 65%, carbide accounts for 35%, a spot of diamond.Metal is based on copper, iron.Because the fusing point of iron is 1537 ℃, the fusing point of alloy can be lower.The carborundum fusing point is more than 2700 ℃, and the diamond fusing point is higher, more than 3500 ℃, so, can be about 1500 ℃, with the metallic matrix fusion, and guarantee fund's hard rock and carborundum are constant.On this basis, just can liquid metal, carbide and the diamond dust mixture of fusion be atomized again and be condensed into powder again with the method for inert gas spraying.
The invention has the beneficial effects as follows, make the whole recovery process that physical change only take place, thereby avoid environmental pollution and composition loss to have higher production efficiency simultaneously.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a workflow diagram of the present invention.
Fig. 2 is the vertical section structural map of one embodiment of the present of invention.
The specific embodiment
As shown in Figure 1, diamond saw blade recovery method provided by the present invention is mainly realized by remelting, atomizing, three steps of condensation.Saw blade being cleaned, after the shove charge, first forvacuum, charging into inert gas, make to reach oxygen free condition in the stove, heat remelting then, under the condition of certain degree of superheat, it is sprayed with inert gas, directly be condensed into pressed powder then.This method will reach following effect: the useless saw blade of bulk can be melted and be atomized into needed powder 1.; 2. can preferably diamond particles be separated; 3. in atomizing, cooled powder, the content of diamond, carbide and quality can not reduce and descend.Because diamond grit is than big many of other powder, so in the atomizing cooling procedure, its flying speed is different with other powder certainty with suffered resistance, as long as provide suitable parameters that diamond is separated with binding agent.The carbide granularity is very little, is 300～400 orders, as long as can control the atmosphere of fusion, atomizing, just can guarantee that it is unaffected substantially.Diamond grit is bigger, so not only will guarantee the atmosphere in melting process, also will control the atomizing cooling velocity, can not break because of thermal stress with guarantee fund's hard rock. and for metal adhesive, it is atomized into alloyed powder can use.
Fig. 2 is an an example of the present invention.Among the figure, the 1st, bell, the 2nd, thermal insulation layer, the 3rd, the atomizer air inlet pipe, the 4th, smelting furnace housing, the 5th, atomizer, the 6th, melting kettle, the 7th, the cooling chamber housing, the 8th, cooling chamber cooling water outlet, the 9th, cooling chamber cooling water intake, the 10th, powder collection mouth (connecing powder collection container), the 11st, cooling chamber pressure-control valve door interface, the 12nd, load coil.Be smelting furnace above, the bottom is a cooling chamber, and injection spray pipe vertically stands in the remelting crucible.The first step of the present invention is saw blade will be melt into liquid state.This step must guarantee that alloying component does not change, so want strict control heating atmosphere.Usually can adopt and vacuumize or protective atmosphere is realized.It is too high to vacuumize cost, is requiring to use protective atmosphere proper under the very not high situation.Considering wherein has the Ti powder, so nitrogen can not be used, generally uses argon gas.Can make the melting furnace atmosphere reach needed oxygen free condition very soon by just katabaric method.Eddy-current heating is more appropriate frequently for the recruitment of heating French, because the line-frequency induction cost is lower, efficient is higher.Simultaneously, eddy-current heating has function composite by electromagnetic stirring, can make liquation more even.It after the fusion atomizing.Diamond can be sprayed for guaranteeing that molten metal can be atomized into powder and want, just must select suitable atomizer and suitable parameter.Through experiment, the similar and spout structure 2B spray gun can satisfy above-mentioned requirements.Also need simultaneously gas is carried out preheating, also can not solidify at spout to guarantee metal.Can adopt suction feed type gun to make atomizer.Spray gun vertically is placed in the melting kettle, and air-flow can be heated by liquation earlier, sprays muzzle, atomizing molten materials then.The cooling of pyrosol is with relatively more conventional method: the cooling of inert gas normal pressure.As long as reserve enough cooling spaces, and cooling argon pressure, temperature controlled (by safety-valve, water-cooling structure control), just can obtain the mixture of metal binder powder and diamond abrasive.
Claims (1)
1. the recovery method of a waste and old diamond cut saw blade is the mixture that block diamond saw blade is changed again into metal dust and diamond grit, it is characterized in that: obtain mixture by remelting, atomizing and three steps of condensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100056037A CN1274428C (en) | 2004-02-14 | 2004-02-14 | Recovering used diamond sawweb by inert gas atomization condensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100056037A CN1274428C (en) | 2004-02-14 | 2004-02-14 | Recovering used diamond sawweb by inert gas atomization condensation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559703A CN1559703A (en) | 2005-01-05 |
| CN1274428C true CN1274428C (en) | 2006-09-13 |
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ID=34439659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100056037A Expired - Fee Related CN1274428C (en) | 2004-02-14 | 2004-02-14 | Recovering used diamond sawweb by inert gas atomization condensation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1274428C (en) |
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2004
- 2004-02-14 CN CNB2004100056037A patent/CN1274428C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1559703A (en) | 2005-01-05 |
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