CN106241794A - A kind of method and product reclaiming diamond from sapphire grinding slug - Google Patents
A kind of method and product reclaiming diamond from sapphire grinding slug Download PDFInfo
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- CN106241794A CN106241794A CN201610621402.2A CN201610621402A CN106241794A CN 106241794 A CN106241794 A CN 106241794A CN 201610621402 A CN201610621402 A CN 201610621402A CN 106241794 A CN106241794 A CN 106241794A
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
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Abstract
The invention provides a kind of method and product grinding from sapphire and reclaiming diamond slug.The inventive method, uses special process, it is possible to grinds from sapphire and reclaims diamond slug, does not damage the performance of diamond self, make diamond reuse, reduce the discharge capacity of harmful waste；Successively use centrifugally operated, it is possible to making solid-liquid separation thorough, fluid organic material clearance reaches more than 80%；Using sulphuric acid and perchloric acid to react with impurity, solid organic matters (hard resin, copper powder) removal of impurity reaches more than 95%；Centrifugation and settlement separate combination, it is achieved separation and purification, aluminium oxide and bentonite removal of impurity reach more than 95%, and gained diamond dust particle purity is high, can repeatedly utilize, it is possible to effectively reduce the cost of sapphire grinding process technique.
Description
Technical field
The present invention relates to technical field of mineral processing, grind recovery slug in particular to one from sapphire
The method of diamond and product.
Background technology
Sapphire (Sapphire), mineral name corundum, trigonal system crystalline solid.Sapphire in industry is aluminium oxide
A kind of monocrystalline (α-Al2O3), its Mohs' hardness reaches 9.0, is only second to diamond.And the special lattice structure of sapphire is also determined
Determine it and there is excellent physical property and chemical stability, such as, fabulous thermal conductance, splendid electric insulating quality and printing opacity
Property, high temperature resistant, high intensity, high rigidity etc..Therefore, sapphire is widely used in infrared military installation, guided missile, submarine, height
The window material of power light laser etc..Little with GaN single crystal film lattice constant mismatch rate due to sapphire C face again, meet simultaneously
Resistant to elevated temperatures requirement in GaN single crystal film growth course, so, sapphire is again by as GaN/Al2O3Light emitting diode (LED) is
For preferable backing material, it is widely used in LED industry.In recent years, along with popularizing of smart mobile phone, sapphire relies on again
The intensity of its superelevation, wearability and resistance to marring, be the most gradually applied to mobile phone screen, Touch control key, bonnet cover glass and take the photograph
As head diaphragm etc..The most all applications, the newest application, sapphire demand will be stimulated to have one
Raising by a relatively large margin.
But, no matter which field is Sapphire Substrate be applied to, it is necessary first to do is exactly by sapphire monocrystal crystal bar
Using the methods such as diamond wire saw to cut into thickness is the thin slice about 800 μm, the most again by grinding step and buffer
It is the thin slice about 600 μm that sequence is processed into thickness.And it is the most key in the sapphire course of processing for grinding thinning process
One of link, it is related to the product parameters such as the fineness of Sapphire Substrate sheet, flatness, roughness.Sapphire Substrate sheet grinds
Mill thinning process is mainly with diamond as abrasive material, then it is (main with aqueous solvent (predominantly ethylene glycol) or oil-based solvent
For white oil) mix by a certain percentage, and add suitable dispersant and be configured to certain density suspension, by the machine of diamond
Tool ablation reaches to grind thinning effect.At present, the PCD micropowder used in the sapphire course of processing mainly has 5-9 (D50=
6.5 ± 0.3 μm), several size specification such as 4-8 (D50=5.6 ± 0.2 μm), 3-6 (D50=4.2 ± 0.2 μm).Ground
Cheng Zhong, the granule of diamond can be tapered, and granularity also can taper into, and produces in these diamond particles and process of lapping
Copper powder, aluminium oxide etc. grind the liquid substances such as chip and abrasive solvents, auxiliary agent, abluent and form grinding waste slurry material.And for this
Partial mill waste slurry, the main methods of sapphire processing enterprise walks hazardous waste disposal journey according to laws and regulations exactly
Sequence.The most descending in current economy, under the background that environmental protection pressure continues to increase, the useless processing cost of danger is paid wages for enterprise
A no small burden beyond doubt；It addition, environment be also result in by the discharge of danger wastes digests pressure greatly.If energy
Invent a kind of method the diadust in grinding waste slurry material is reclaimed, and the diadust being recovered to is repeated profit again
With, will be possible not only to save the production cost of enterprise, it is also possible to greatly facilitate recycling and environmental conservation of resource.
In the prior art subsequent treatment to grinding waste slurry material, can only be by the complicated front road of technique recovery section sapphire
Processing is worth relatively low boron carbide particles, is worth higher diamond particles during rear road is processed and then cannot reclaim, only
Can be wasted in follow-up offal treatment operation.
In view of this, the special proposition present invention.
Summary of the invention
The first object of the present invention is that providing a kind of grinds, from sapphire, the method reclaiming diamond slug, described
Grind slug from sapphire that to reclaim the method technique of diamond simple, it is possible to effectively grind waste material from sapphire and reclaim
Highly purified diamond dust granule, described powder particle can repeatedly utilize, it is possible to effectively reduces sapphire grinding and adds
The cost of work technique.
The second object of the present invention is that providing a kind of uses above-mentioned grinding from sapphire to reclaim diamond slug
Method reclaim the diamond dust granule that obtains, described diamond dust particle purity is high, can repeatedly utilize, energy
Enough costs effectively reducing sapphire grinding process technique.
In order to realize the above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) described sapphire is ground slug centrifugation de-oiling；
(2) gained is centrifuged bed material solvent dispersion, eccentric cleaning；
(3) gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction；
(4) being cleaned by gained material gravitational settling to pH is 6-7, and the dispersed with stirring that adds water is uniform, is centrifuged by gained suspension；
(5) gained being centrifuged bed material to react with sodium silicate solution, natural subsidence, gained solution recentrifuge collects the centrifugal end
Material, gained is centrifuged bed material and cleans, dries, obtains diamond dust granule.
The inventive method, uses special process, it is possible to grinds from sapphire and reclaims diamond slug, does not damage Buddha's warrior attendant
The performance of stone self, makes diamond reuse, and reduces the discharge capacity of harmful waste；Successively use centrifugally operated, it is possible to make solid
Liquid separates thoroughly, and fluid organic material clearance reaches more than 80%；Sulphuric acid and perchloric acid is used to react with impurity, solid organic matters
(hard resin, copper powder) removal of impurity reaches more than 95%；Centrifugation and settlement separate combination, it is achieved separation and purification, oxidation
Aluminum and bentonite removal of impurity reach more than 95%, and gained diamond dust particle purity is high, can repeatedly utilize, it is possible to
Effectively reduce the cost of sapphire grinding process technique.
Preferably, described sapphire is ground slug centrifugation de-oiling, use tripod pendulum type batch centrifugal or Large Copacity tubular type to be centrifuged
The grinding waste material centrifugation de-oiling that machine etc. will be collected, obtains centrifugal bed material；Gained is centrifuged in bed material containing diamond, copper powder, phenolic aldehyde
Resin, aluminium oxide, Organic substance solvent etc..
Described sapphire can be ground waste material and carry out preliminary removing oil by centrifugation de-oiling, it is simple to subsequent technique removes it further
His impurity.
Preferably, described solvent includes petroleum ether or normal hexane.
It is further preferred that the boiling range of described petroleum ether is 60-90 DEG C.
It is further preferred that the amount ratio of centrifugal bed material and petroleum ether or normal hexane is 1kg:2-5L, preferably 1kg:3-
5L, more preferably 1kg:4L；Dispersed with stirring is uniform, is then centrifuged cleaning.
Use the petroleum ether of specific consumption, it is possible to fully dispersed gained is centrifuged bed material, dissolve oils and fats impurity, by centrifugal clear
Wash mode, it is simple to remove residual oils and fats impurity.
Preferably, gained is centrifuged bed material dry pulverize after again with sulphuric acid and perchloric acid impurity removal reaction.
Preferably, during gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction, gained is centrifuged bed material and adds
In reactor, being subsequently adding concentrated sulphuric acid, centrifugal bed material is 0.8-2:30, preferably 1.2-1.6:30 with the mass ratio of concentrated sulphuric acid,
More preferably 1.4:30.
It is further preferred that drip perchloric acid in course of reaction, centrifugal bed material is 1-1.6 with the mass ratio of perchloric acid:
3, preferably 1.2-1.4:3, more preferably 1.3:3.
Preferably, the mass fraction of described concentrated sulphuric acid is 95%-98%；The mass fraction of described perchloric acid is 70%-
75%.
It is further preferred that the reaction temperature that gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction is 180-240
DEG C, the response time is 2-8h；Preferably, reaction temperature is 200-220 DEG C, and the response time is 4-6h；It is further preferred that reaction
Temperature is 208-212 DEG C, and the response time is 5h.
By centrifugal bed material at a certain temperature, sulphuric acid and perchloric acid with specific consumption react, it is possible to effectively remove copper powder,
The impurity such as phenolic resin, organic solvent, it is simple to subsequent technique is carried out, improves the purity of gained diamond dust granule.
Preferably, in the reacted material of step (3) gained, add water carry out gravitational settling cleaning, until cleaning to slurry
The pH value of material is 6-7.
It is further preferred that the drying materials after being cleaned by gained is except water, obtains dried material, wherein mainly contain Buddha's warrior attendant
Stone, aluminium oxide and large granular impurity.
Preferably, adding water in the material after cleaning, material is 1:5-20, preferably 1:5-15 with the mass ratio of water,
More preferably 1:10；Dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide.
Preferably, described material carries out mass ratio calculating with its dry powder weight.
Preferably, collect finely dispersed suspension, centrifugal in centrifuge, isolate the fine grained diamond in material
And aluminium oxide.
Preferably, gained being centrifuged bed material and reacts with sodium silicate aqueous solution, natural subsidence separates, and isolates in centrifugal bed material
Non-diamond granule foreign.
Sodium silicate can react with remaining alumina impurities, and product can pass through natural subsidence, with precipitation form
Remove.
Preferably, the mass fraction of described sodium silicate aqueous solution is 0.01%-0.1%, preferably 0.03%-0.07%,
More preferably 0.05%.
Preferably, described in each step of the present invention, centrifugal bed material all carries out mass ratio calculating with its dry powder weight.
The above-mentioned method using above-mentioned grinding from sapphire to reclaim diamond slug is used to reclaim the gold obtained
Hard rock powder particle.
Gained diamond dust particle purity is high, can repeatedly utilize, it is possible to effectively reduce sapphire attrition process
The cost of technique.
Compared with prior art, the invention have the benefit that
The inventive method, uses special process, it is possible to grinds from sapphire and reclaims diamond slug, does not damage Buddha's warrior attendant
The performance of stone self, makes diamond reuse, and reduces the discharge capacity of harmful waste；Successively use centrifugally operated, it is possible to make solid
Liquid separates thoroughly, and fluid organic material clearance reaches more than 80%；Sulphuric acid and perchloric acid is used to react with impurity, solid organic matters
(hard resin, copper powder) removal of impurity reaches more than 95%；Centrifugation and settlement separate combination, it is achieved separation and purification, oxidation
Aluminum and bentonite removal of impurity reach more than 95%, and gained diamond dust particle purity is high, can repeatedly utilize, it is possible to
Effectively reduce the cost of sapphire grinding process technique.
Detailed description of the invention
Below in conjunction with detailed description of the invention, technical scheme is clearly and completely described, but ability
Field technique personnel it will be appreciated that following described embodiment is a part of embodiment of the present invention rather than whole embodiments,
It is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.Unreceipted actual conditions person in embodiment, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument
Unreceipted production firm person, being can be by the commercially available conventional products bought and obtain.
Embodiment 1
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) the grinding waste material centrifugation de-oiling using tripod pendulum type batch centrifugal to collect, obtains centrifugal bed material；Centrifugal bed material contains
Diamond, copper powder, phenolic resin, aluminium oxide, Organic substance solvent etc.；
(2) in the centrifugal bed material of step 1 gained, add petroleum ether to disperse, centrifugal bed material and the amount ratio of petroleum ether
For 1kg:2L, the boiling range of petroleum ether is 60-90 DEG C；Dispersed with stirring is uniform；
(3) slurry after being uniformly dispersed uses centrifuge to be centrifuged cleaning, and pours out the supernatant after being centrifuged, is centrifuged
Bed material；Gained is centrifuged in bed material and mainly contains diamond, copper powder, phenolic resin, aluminium oxide etc.；This step can be isolated centrifugal
The most organic solvent of residual in bed material；
(4) the centrifugal bed material after step (3) eccentric cleaning is dried, then pulverize；
(5) the centrifugal bed material that step (4) crushes is put in quartz reaction still, adds concentrated sulphuric acid, centrifugal bed material with
The mass ratio of concentrated sulphuric acid is 2:30, and reaction temperature is 180-184 DEG C, and the response time is 8h；Perchloric acid is dripped in course of reaction,
Centrifugal bed material is 1.6:3 with the mass ratio of perchloric acid；This step can remove the impurity such as copper powder, phenolic resin, organic solvent；
(6) in step (5) reacted material, add pure water and carry out gravitational settling cleaning, until cleaning to slurry
PH value is 6-7；
(7) material cleaned for step (6) is dried again except water, obtain dried material；Wherein mainly contain diamond,
Aluminium oxide and large granular impurity；
(8) adding pure water in the dried material that step (7) obtains, material is 1:5 with the mass ratio of pure water, then
Dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide；
(9) finely dispersed suspension is taken centrifugal, to isolate the fine grained diamond in material and oxygen in centrifuge
Change aluminum；Gained is centrifuged bed material and imports in glass beaker again, adds the sodium silicate solution that enough mass fractions are 0.01%, carries out
Natural subsidence separates, with the non-diamond granule foreign being separated off out in centrifugal bed material；
(10) gained solution recentrifuge collects centrifugal bed material, and adds pure water and be carried out, and then dries and removes water
Point, the i.e. available diamond dust granule that can reuse.
Embodiment 2
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) the grinding waste material centrifugation de-oiling using tripod pendulum type batch centrifugal to collect, obtains centrifugal bed material；Centrifugal bed material contains
Diamond, copper powder, phenolic resin, aluminium oxide, Organic substance solvent etc.；
(2) in the centrifugal bed material of step 1 gained, add normal hexane to disperse, centrifugal bed material and the amount ratio of normal hexane
For 1kg:5L；Dispersed with stirring is uniform；
(3) slurry after being uniformly dispersed uses centrifuge to be centrifuged cleaning, and pours out the supernatant after being centrifuged, is centrifuged
Bed material；Gained is centrifuged in bed material and mainly contains diamond, copper powder, phenolic resin, aluminium oxide etc.；This step can be isolated centrifugal
The most organic solvent of residual in bed material；
(4) the centrifugal bed material after step (3) eccentric cleaning is dried, then pulverize；
(5) the centrifugal bed material that step (4) crushes is put in quartz reaction still, adds concentrated sulphuric acid, centrifugal bed material with
The mass ratio of concentrated sulphuric acid is 0.8:30；Reaction temperature is 236-240 DEG C, and the response time is 2h；High chlorine is dripped in course of reaction
Acid, centrifugal bed material is 1:3 with the mass ratio of perchloric acid；This step can remove the impurity such as copper powder, phenolic resin, organic solvent；
(6) in step (5) reacted material, add pure water and carry out gravitational settling cleaning, until cleaning to slurry
PH value is 6-7；
(7) material cleaned for step (6) is dried again except water, obtain dried material；Wherein mainly contain diamond,
Aluminium oxide and large granular impurity；
(8) adding pure water in the dried material that step (7) obtains, material is 1:20 with the mass ratio of pure water, so
Rear dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide；
(9) finely dispersed suspension is taken centrifugal, to isolate the fine grained diamond in material and oxygen in centrifuge
Change aluminum；Gained is centrifuged bed material and imports in glass beaker again, adds the sodium silicate solution that enough mass fractions are 0.1%, carries out
Natural subsidence separates, with the non-diamond granule foreign being separated off out in centrifugal bed material；
(10) gained solution recentrifuge collects centrifugal bed material, and adds pure water and be carried out, and then dries and removes water
Point, the i.e. available diamond dust granule that can reuse.
Embodiment 3
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) the grinding waste material centrifugation de-oiling using tripod pendulum type batch centrifugal to collect, obtains centrifugal bed material；Centrifugal bed material contains
Diamond, copper powder, phenolic resin, aluminium oxide, Organic substance solvent etc.；
(2) in the centrifugal bed material of step 1 gained, add petroleum ether to disperse, centrifugal bed material and the amount ratio of petroleum ether
For 1kg:3L, the boiling range of petroleum ether is 60-90 DEG C；Dispersed with stirring is uniform；
(3) slurry after being uniformly dispersed uses centrifuge to be centrifuged cleaning, and pours out the supernatant after being centrifuged, is centrifuged
Bed material；Gained is centrifuged in bed material and mainly contains diamond, copper powder, phenolic resin, aluminium oxide etc.；This step can be isolated centrifugal
The most organic solvent of residual in bed material；
(4) the centrifugal bed material after step (3) eccentric cleaning is dried, then pulverize；
(5) the centrifugal bed material that step (4) crushes is put in quartz reaction still, adds concentrated sulphuric acid, centrifugal bed material with
The mass ratio of concentrated sulphuric acid is 1.6:30；Reaction temperature is 198-202 DEG C, and the response time is 6h；High chlorine is dripped in course of reaction
Acid, centrifugal bed material is 1.4:3 with the mass ratio of perchloric acid；This step can remove the impurity such as copper powder, phenolic resin, organic solvent；
(6) in step (5) reacted material, add pure water and carry out gravitational settling cleaning, until cleaning to slurry
PH value is 6-7；
(7) material cleaned for step (6) is dried again except water, obtain dried material；Wherein mainly contain diamond,
Aluminium oxide and large granular impurity；
(8) adding pure water in the dried material that step (7) obtains, material is 1:5 with the mass ratio of pure water, then
Dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide；
(9) finely dispersed suspension is taken centrifugal, to isolate the fine grained diamond in material and oxygen in centrifuge
Change aluminum；Gained is centrifuged bed material and imports in glass beaker again, adds the sodium silicate solution that enough mass fractions are 0.03%, carries out
Natural subsidence separates, with the non-diamond granule foreign being separated off out in centrifugal bed material；
(10) gained solution recentrifuge collects centrifugal bed material, and adds pure water and be carried out, and then dries and removes water
Point, the i.e. available diamond dust granule that can reuse.
Embodiment 4
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) the grinding waste material centrifugation de-oiling using tripod pendulum type batch centrifugal to collect, obtains centrifugal bed material；Centrifugal bed material contains
Diamond, copper powder, phenolic resin, aluminium oxide, Organic substance solvent etc.；
(2) in the centrifugal bed material of step 1 gained, add normal hexane to disperse, centrifugal bed material and the amount ratio of normal hexane
For 1kg:5L；Dispersed with stirring is uniform；
(3) slurry after being uniformly dispersed uses centrifuge to be centrifuged cleaning, and pours out the supernatant after being centrifuged, is centrifuged
Bed material；Gained is centrifuged in bed material and mainly contains diamond, copper powder, phenolic resin, aluminium oxide etc.；This step can be isolated centrifugal
The most organic solvent of residual in bed material；
(4) the centrifugal bed material after step (3) eccentric cleaning is dried, then pulverize；
(5) the centrifugal bed material that step (4) crushes is put in quartz reaction still, adds concentrated sulphuric acid, centrifugal bed material with
The mass ratio of concentrated sulphuric acid is 1.2:30, more preferably 1.4:30；Reaction temperature is 218-222 DEG C, and the response time is 4h；?
Dripping perchloric acid in course of reaction, centrifugal bed material is 1.2:3 with the mass ratio of perchloric acid；This step can remove copper powder, phenolic aldehyde tree
The impurity such as fat, organic solvent；
(6) in step (5) reacted material, add pure water and carry out gravitational settling cleaning, until cleaning to slurry
PH value is 6-7；
(7) material cleaned for step (6) is dried again except water, obtain dried material；Wherein mainly contain diamond,
Aluminium oxide and large granular impurity；
(8) adding pure water in the dried material that step (7) obtains, material is 1:15 with the mass ratio of pure water, so
Rear dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide；
(9) finely dispersed suspension is taken centrifugal, to isolate the fine grained diamond in material and oxygen in centrifuge
Change aluminum；Gained is centrifuged bed material and imports in glass beaker again, adds the sodium silicate solution that enough mass fractions are 0.07%, carries out
Natural subsidence separates, with the non-diamond granule foreign being separated off out in centrifugal bed material；
(10) gained solution recentrifuge collects centrifugal bed material, and adds pure water and be carried out, and then dries and removes water
Point, the i.e. available diamond dust granule that can reuse.
Embodiment 5
A kind of method reclaiming diamond from sapphire grinding slug, comprises the steps:
(1) the grinding waste material centrifugation de-oiling using tripod pendulum type batch centrifugal to collect, obtains centrifugal bed material；Centrifugal bed material contains
Diamond, copper powder, phenolic resin, aluminium oxide, Organic substance solvent etc.；
(2) in the centrifugal bed material of step 1 gained, add petroleum ether to disperse, centrifugal bed material and the amount ratio of petroleum ether
For 1kg:4L, the boiling range of petroleum ether is 60-90 DEG C；Dispersed with stirring is uniform；
(3) slurry after being uniformly dispersed uses centrifuge to be centrifuged cleaning, and pours out the supernatant after being centrifuged, is centrifuged
Bed material；Gained is centrifuged in bed material and mainly contains diamond, copper powder, phenolic resin, aluminium oxide etc.；This step can be isolated centrifugal
The most organic solvent of residual in bed material；
(4) the centrifugal bed material after step (3) eccentric cleaning is dried, then pulverize；
(5) the centrifugal bed material that step (4) crushes is put in quartz reaction still, adds concentrated sulphuric acid, centrifugal bed material with
The mass ratio of concentrated sulphuric acid is 1.4:30；Reaction temperature is 208-212 DEG C, and the response time is 5h；High chlorine is dripped in course of reaction
Acid, centrifugal bed material is 1.3:3 with the mass ratio of perchloric acid；This step can remove the impurity such as copper powder, phenolic resin, organic solvent；
(6) in step (5) reacted material, add pure water and carry out gravitational settling cleaning, until cleaning to slurry
PH value is 6-7；
(7) material cleaned for step (6) is dried again except water, obtain dried material；Wherein mainly contain diamond,
Aluminium oxide and large granular impurity；
(8) adding pure water in the dried material that step (7) obtains, material is 1:10 with the mass ratio of pure water, so
Rear dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide；
(9) finely dispersed suspension is taken centrifugal, to isolate the fine grained diamond in material and oxygen in centrifuge
Change aluminum；Gained is centrifuged bed material and imports in glass beaker again, adds the sodium silicate solution that enough mass fractions are 0.05%, carries out
Natural subsidence separates, with the non-diamond granule foreign being separated off out in centrifugal bed material；
(10) gained solution recentrifuge collects centrifugal bed material, and adds pure water and be carried out, and then dries and removes water
Point, the i.e. available diamond dust granule that can reuse.
Detecting embodiment of the present invention 1-5 method gained diamond dust particulate component (mass fraction), result is such as
Under:
Table 1 present invention grinds, from sapphire, the diamond components testing result reclaimed slug
By table 1 it can be seen that the present invention grinds, from sapphire, the method reclaiming diamond slug, it is possible to effectively go
The impurity such as the copper powder in slug, phenolic resin, aluminium oxide, bentonite, Organic substance solvent, gained diamond is ground except sapphire
Powder particle purity is high, can repeatedly utilize, it is possible to effectively reduce the cost of sapphire grinding process technique.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that various embodiments above is only used
So that technical scheme to be described, it is not intended to limit；It will be understood by those within the art that: without departing substantially from this
In the case of bright spirit and scope, the technical scheme described in foregoing embodiments can be modified, or to wherein
Some or all of technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution
Depart from the scope of various embodiments of the present invention technical scheme；It is, therefore, intended that include in the following claims belonging to the present invention
In the range of all these substitutions and modifications.
Claims (10)
1. one kind is ground, from sapphire, the method reclaiming diamond slug, it is characterised in that comprise the steps:
(1) described sapphire is ground slug centrifugation de-oiling；
(2) gained is centrifuged bed material solvent dispersion, eccentric cleaning；
(3) gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction；
(4) being cleaned by gained material gravitational settling to pH is 6-7, and the dispersed with stirring that adds water is uniform, is centrifuged by gained suspension；
(5) gained being centrifuged bed material to react with sodium silicate solution, natural subsidence, gained solution recentrifuge collects centrifugal bed material,
Gained is centrifuged bed material and cleans, dries, and obtains diamond dust granule.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
Described solvent includes petroleum ether or normal hexane.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 2, it is characterised in that
Centrifugal bed material is 1kg:2-5L, preferably 1kg:3-5L, more preferably 1kg:4L with the amount ratio of petroleum ether or normal hexane.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
Gained is centrifuged bed material dry pulverize after again with sulphuric acid and perchloric acid impurity removal reaction.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
During gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction, gained is centrifuged bed material and adds in reactor, then add
Entering concentrated sulphuric acid, centrifugal bed material is 0.8-2:30, preferably 1.2-1.6:30 with the mass ratio of concentrated sulphuric acid, more preferably 1.4:
30。
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 5, it is characterised in that
Dripping perchloric acid in course of reaction, centrifugal bed material is 1-1.6:3, preferably 1.2-1.4:3 with the mass ratio of perchloric acid, enters one
Step is preferably 1.3:3.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
The reaction temperature that gained is centrifuged bed material and sulphuric acid and perchloric acid impurity removal reaction is 180-240 DEG C, and the response time is 2-8h；Preferably
Ground, reaction temperature is 200-220 DEG C, and the response time is 4-6h；It is further preferred that reaction temperature is 208-212 DEG C, during reaction
Between be 5h.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
Being cleaned by gained material gravitational settling to pH is 6-7, and the dispersed with stirring that adds water is uniform, and material is 1:5-20 with the mass ratio of water, excellent
Elect 1:5-15 as, more preferably 1:10；Dispersed with stirring is uniform, obtains the suspension of diamond and aluminium oxide.
A kind of method reclaiming diamond from sapphire grinding slug the most according to claim 1, it is characterised in that
The mass fraction of described sodium silicate aqueous solution is 0.01%-0.1%, preferably 0.03%-0.07%, more preferably
0.05%.
10. use the side reclaiming diamond from sapphire grinding slug that the arbitrary described employing of claim 1-9 is above-mentioned
Method reclaims the diamond dust granule obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621402.2A CN106241794B (en) | 2016-08-01 | 2016-08-01 | It is a kind of that the method and product that diamond is reclaimed in slug are ground from sapphire |
Applications Claiming Priority (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829953A (en) * | 2017-02-14 | 2017-06-13 | 北京国瑞升科技股份有限公司 | A kind of diamond recovery and the method for recycling and product |
| CN110540199A (en) * | 2018-07-10 | 2019-12-06 | 蓝思科技（长沙）有限公司 | Method for extracting diamond powder from aqueous diamond liquid |
| CN113415817A (en) * | 2021-07-22 | 2021-09-21 | 东莞晶驰光电科技有限公司 | Method for regenerating sapphire raw material and regenerated sapphire |
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| CN102229113A (en) * | 2011-06-07 | 2011-11-02 | 王楚雯 | Method for recovering sapphire powder |
| CN103350996A (en) * | 2013-06-29 | 2013-10-16 | 开封恒锐新金刚石制品有限公司 | Method of recycling diamond from liquid resin |
| CN103495505A (en) * | 2013-10-10 | 2014-01-08 | 安化县众旺钨业有限公司 | Floatation method of diamonds and application to separation and purification of artificial diamonds from grinding waste materials thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102229113A (en) * | 2011-06-07 | 2011-11-02 | 王楚雯 | Method for recovering sapphire powder |
| CN103350996A (en) * | 2013-06-29 | 2013-10-16 | 开封恒锐新金刚石制品有限公司 | Method of recycling diamond from liquid resin |
| CN103495505A (en) * | 2013-10-10 | 2014-01-08 | 安化县众旺钨业有限公司 | Floatation method of diamonds and application to separation and purification of artificial diamonds from grinding waste materials thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829953A (en) * | 2017-02-14 | 2017-06-13 | 北京国瑞升科技股份有限公司 | A kind of diamond recovery and the method for recycling and product |
| CN110540199A (en) * | 2018-07-10 | 2019-12-06 | 蓝思科技（长沙）有限公司 | Method for extracting diamond powder from aqueous diamond liquid |
| CN113415817A (en) * | 2021-07-22 | 2021-09-21 | 东莞晶驰光电科技有限公司 | Method for regenerating sapphire raw material and regenerated sapphire |
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| CN106241794B (en) | 2018-02-02 |
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