CN109384222A - A kind of diamond environmental protection high efficiency extraction system and extracting method - Google Patents
A kind of diamond environmental protection high efficiency extraction system and extracting method Download PDFInfo
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- CN109384222A CN109384222A CN201811146456.3A CN201811146456A CN109384222A CN 109384222 A CN109384222 A CN 109384222A CN 201811146456 A CN201811146456 A CN 201811146456A CN 109384222 A CN109384222 A CN 109384222A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/25—Diamond
- C01B32/28—After-treatment, e.g. purification, irradiation, separation or recovery
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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
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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Abstract
The invention discloses a kind of diamond environmental protection high efficiency extraction system and extracting methods, by crushing system, air-flow to spray removing-hierarchy system, the first magnetic separation system, screening system；Second magnetic separation system, reaction kettle, diamond cleaning device；It handled, extract to obtain pure diamond.The present invention overcomes prior art deficiencies, method is simple, synthesis column is based on fritter after broken, the quick removing of diamond and metal-back, graphite powder can be realized in such a way that air-flow is to spray and air current classifying, then it is cleaned after magnetic separation and just obtains diamond pure particle, this method is high-efficient, reduces labor intensity, soda acid use is reduced, cost has been saved；And graphite powder, the metal-back being collected into can be recycled recycling, increase comprehensive economic efficiency, have a good application prospect.
Description
Technical field
The present invention relates to diamond synthesizings and extractive technique, and in particular to a kind of diamond environmental protection high efficiency extraction system and mentions
Take method.
Background technique
Diamond has highest hardness, highest thermal conductivity, as a kind of limiting material, mechanics, calorifics, optics,
The excellent properties that electricity, acoustics and chemistry etc. have other materials incomparable, in industry, scientific research, national defence, health care
Equal fields all have a wide range of applications, and have broad application prospects in the finishing such as automobile, electronics, aerospace field.
Mainly there is powder Static Catalyst method for the synthesis of diamond at present, during carrying out diamond synthesizing using this method, graphite
It is catalytically conveted to diamond by catalyst under conditions of pressure is 5.0-5.5Gpa, temperature is 1300-1500 DEG C, so by
Containing substances such as metal, graphite, dolomite, pyrophillites in graphite column after high temperature and pressure synthesis, that is, synthesize resulting Buddha's warrior attendant
Stone is tightly wrapped in these substances.Therefore, the acquirement of final diamond needs to remove its external various impurity wrapped up.
Currently, common diamond extracting method has electrolysis method, acid-hatching of young eggs etc..Wherein electrolysis method is that will synthesize column to be crushed,
It is then charged into electrolytic cell, electrolysis 10~15 days, the material after electrolysis is ground, separation by shaking table, graphite is removed and metal is miscellaneous
Matter recycles reaction kettle to carry out soda acid processing to the diamond after choosing, washing is to obtain pure diamond.It is mentioned using electrolysis method
Diamond period length is taken, measures big, at high cost with acid and there is large effect to environment；The acid-hatching of young eggs consumes a large amount of nitric acid, salt
Strong volatile acid such as acid and perchloric acid, usage amount is big, causes serious harm to environment and staff during processing,
And largely improve production cost.So it is always constantly to visit in the field that the environment-friendly high-efficiency of diamond, which is extracted,
The technology studied carefully.Wherein, (entitled " Clean Purification Process for Synthetic Diamond ", Li little Dong) uses free of contamination technique: gas phase
The processes such as the broken dissociation-Magneto separate of oxidation-- heavy-fluid separation carry out the extraction of diamond, and this method avoid a large amount of volatility
The use of acid avoids acid solution harm caused by human body and environment, but it will also be separated while realizing graphite separation
Graphite aoxidized, graphite can not be recycled, and need to provide the energy in oxidation process, cause heat consumption；Stone
The carbon monoxide that ink oxidation generates when incomplete can equally affect to environment.
Summary of the invention
Technical problem solved by the present invention is the method period of extraction diamond is long in the prior art, production efficiency is low, use
Acid amount is big, the rate of recovery is low, overall cost is high and has biggish harm to environment and human body.
In view of the above-mentioned problems, the present invention provides a kind of diamond environmental protection high efficiency extraction system and extracting methods, using this
Method extraction diamond is pollution-free, at low cost, is not related to the process of any chemical reaction, easy to operate, easily controllable, the short time
The extraction, high-efficient of diamond inside can be completed.
The present invention is achieved by the following technical solutions
A kind of diamond environmental protection high efficiency extraction system, the system include crushing system, air-flow to spray removing-hierarchy system,
First magnetic separation system, screening system；It further include the second magnetic separation system, reaction kettle, diamond cleaning device；
The crushing system, air-flow pass sequentially through material conveying pipe to spray removing-hierarchy system, the first magnetic separation system
It is connected, first magnetic separation system is equipped with shelling diamond discharge port and the diamond particles discharge port with metal-back；Institute
The band shell diamond discharge port for stating the first magnetic separation system is connected by material conveying pipe with screening system, the screening system
System is connected to spray removing-hierarchy system with air-flow by material conveying pipe；The Buddha's warrior attendant of the shelling of first magnetic separation system
Stone particle discharge port is connected by material conveying pipe with the second magnetic separation system, and second magnetic separation system is equipped with containing magnetic gold
Hard rock discharge port and be free of magnetic diamond discharge port；The discharge port of diamond containing magnetic passes through material conveying pipe and reaction kettle
It is connected, the reaction kettle is connected with diamond cleaning device；Described is defeated by material without magnetic diamond discharge port
Pipeline is sent to be connected with diamond cleaning device.
The diamond environmental protection high efficiency extraction system, which further includes graphite storage device, and the air-flow is to spray
Removing-hierarchy system further includes graphite discharge port, and the graphite discharge port passes through material conveying pipe and graphite storage device
It is connected.
The diamond environmental protection high efficiency extraction system, the crushing system include coarse crushing system and the broken system of essence
System, the coarse crushing system are jaw crusher, and the smart crushing system is oppositely rolling roller crusher；The air-flow is to spray
Removing-hierarchy system includes airflow milling；First magnetic separation system includes magnetic separator；The screening system includes sieve；
Second magnetic separation system includes magnetic separator；
The airflow milling includes air-flow to spray stripping area and air current classifying region.Material enters after airflow milling, first
Air-flow is introduced into realize removing to spray released part, then enter directly into air current classifying part under conditions of the device works
Realize classification.
The method for extracting diamond using above-mentioned diamond environmental protection high efficiency extraction system, this method include following step
It is rapid:
S1. synthesis column to be processed is collected, synthesis column is crushed；
S2. spray is removed by the broken synthesis column of step S1, using air-flow, realizes the disengaging of diamond and metal-back；
Then to after removing material, be classified using air-flow, realize the classification of graphite powder；Collect graphite powder；
S3. by the surplus material progress magnetic separation after step S2 collection graphite, separation, hulling diamond and with metal-back
Diamond particles；
S4. the diamond particles and metal-back by gained after step S3 magnetic separation with metal-back are classified (by sieve
It is classified), collect metal-back；
S5. the diamond particles with metal-back obtained after being classified described in step S4 are delivered to air-flow again and shell to spray
Air-flow is carried out from-hierarchy system to remove spray, sloughs metal-back；
S6. shelling diamond step S3 collected carries out strong magnetic separation, separate diamond particles containing magnetic with not
Diamond particles containing magnetic collect diamond particles containing magnetic and the diamond particles without magnetic respectively；
S7. step S6 gained is placed in water without magnetic diamond particles and is cleaned to get pure diamond is arrived
Grain；Diamond particles containing magnetic obtained by step S6, which are placed in reaction kettle, carries out purified treatment, then washes, and pure diamond can be obtained
Particle.
The partial size of gained particle is less than 2mm after synthesis column described in step S1 is broken；Preferably, the shattering process is first
It is first rough and torn using jaw crusher progress, it is broken that essence is then carried out using oppositely rolling roller crusher.
When being removed using air-flow to spray described in step S2, the intensity of air-flow is 0.4~0.6Mpa, the injection direction of air-flow
It is perpendicular by direction with material；Air current classifying described in step S2 is carried out by grading wheel, and classification wheel speed is generally controlled
System is in 45~80r/min；Its electric current is controlled with the amount of classification material.
Magnetic separation described in step S3 carries out magnetic separation using magnetic separator, and blanking velocity when magnetic separation is 6~8kg/min, feed opening
Away from magnetic gap from for 60~70mm, the revolving speed that magnetic rolls is 40~60r/min；Wherein magnetism intensity when magnetic separation be 400gs~
600gs.Wherein the distance between feed opening and magnetic rolling can be adjusted.
It is classified as being classified using sieve described in step S4 step S4, the mesh size used is 0.2~0.3mm.Its
In, the partial size overwhelming majority of metal-back is in 0.15mm hereinafter, being able to carry out separation well by sieve, collecting metal-back.
Use blanking velocity when strong magnetic separation for 4000~6000 carats/min described in step S6, feed opening is away from magnetic gap
From the 30~40r/min of revolving speed rolled for 60~70mm, magnetic；Strong magnetic magnetism intensity when magnetic separation is 2000~4000gs.
It is as follows that diamond particles containing magnetic described in step S7 carry out the step of purified treatment in a kettle: will contain magnetic diamond
Particle is added in reaction kettle, and sulfuric acid is then added, and diamond particles and the mass ratio that sulfuric acid is added are 5:1~2；It is heated after addition
To 200~240 DEG C, at such a temperature handle 3~5 hours, after the completion of processing, clear water wash diamond particles to neutrality to get
To pure diamond particles；
Preferably, the concentration of the sulfuric acid is :≤98%.
Compared with prior art, the present invention has following positive beneficial effect
The entire separation process almost all of the present invention is effectively separated using physics mode, and time-consuming short, efficiency is separated
Height substantially reduces the extraction time of diamond, reduces production cost；The present invention passes through effective connection of each system and circulation
Processing, greatly reduces material loss and the pollution to human body and environment；The invention is handled by the broken classification of air-flow and magnetic separation,
Processing links are effectively reduced, while improving efficiency, greatly reduce labor intensity；
It is extracted using system of the present invention, it is easy to it controls, need a large amount of manual operation, it can be continuous
It produces, is uninterrupted；Continuous production, was calculated according to 8 hours processing time daily, can extract to obtain daily 3~4 tons it is pure
Net diamond particles finished product, can directly use.The extraction efficiency of diamond is significantly improved, and extracts obtained gold
Hard rock particle is finished product；
The sour dosage of the present invention during processing reduces by 90% or more, i.e., while efficiently separating to diamond
The dosage for greatly reducing acid, realizes the separation and Extraction of green high-efficient；Processing method of the present invention is, it can be achieved that graphite powder, metal
The effective recycling of powder realizes the production of green circulatory formula, reduces production cost.Cost for purification can be made to drop using the present invention
Low 50% or more, there is obvious economic benefit；
By technology contents of the invention it is found that the present invention effectively extracts diamond using physical extracting method, during being somebody's turn to do
The progress of chemical reaction is hardly needed, simple, continuous production is controlled, substantially reduces extraction time, improves extraction efficiency；
And reduce the use of chemical reagent, the influence caused by environment and human body is avoided, will not be generated during the separation process
Any harmful substance, also reduces production cost；It can be into using the isolated graphite of technology contents of the invention, metal-back
Row recycling and reusing further reduced the cost of the extraction process.Therefore, the present invention mentions while realizing green production
High extraction efficiency reduces production cost, has good popularization and application foreground.
Detailed description of the invention
Fig. 1 shows the schematic diagrames of diamond environmental protection high efficiency extraction system；
The meaning that symbol indicates in figure are as follows: 1 indicates crushing system, and 2 indicate that air-flows indicate the to spray removing-hierarchy system, 3
One magnetic separation system, 4 expression screening systems, 5 the second magnetic separation systems of expression, 6 expression reaction kettles, 7 expression diamond cleaning devices, 8
Indicate graphite collection device；101 indicate coarse crushing system, and 102 indicate smart crushing system, and 201 indicate air-flow to spray removing-classification
The air-flow of system indicates air-flow to spray removing-hierarchy system air current classifying region to spray stripping area, 202.
Specific embodiment
The present invention is described in more details below by specific embodiment, but is not intended to restrict the invention
Protection scope.
Embodiment 1
A kind of diamond environmental protection high efficiency extraction system, the system include crushing system 1, air-flow to spray removing-hierarchy system
2, the first magnetic separation system 3, screening system 4；It further include the second magnetic separation system 5, reaction kettle 6, diamond cleaning device 7；
The crushing system 1 includes coarse crushing system 101 and smart crushing system 102, and the coarse crushing system 101 is
Jaw crusher, the smart crushing system 102 are oppositely rolling roller crusher；The air-flow is gas to spray removing-hierarchy system
Stream mill, the airflow milling include air-flow to spray stripping area and air current classifying region；First magnetic separation system is magnetic
Machine is selected, the screening system is sieve, and second magnetic separation system is magnetic separator；
The discharge port of jaw crusher passes through the charging of material conveying pipe and kibbler roll in the crushing system 1
Mouth is connected, and the discharge port of the kibbler roll is by material conveying pipe and air-flow to the air-flow for spraying removing-hierarchy system 2
The air-flow of mill is connected to the feed inlet of spray stripping area, and the discharge port in the air current classifying region of the airflow milling is defeated by material
Pipeline and the feed inlet of the magnetic separator of the first magnetic separation system 3 is sent to be connected；The band metal of the magnetic separator of first magnetic separation system 3
The diamond particles of shell and the discharge port of metal-back mixture pass through material conveying pipe and the sieve import phase in screening system 4
Connection, the sieve discharge port of screening system 4 is by material conveying pipe and air-flow to the airflow milling for spraying removing-hierarchy system 2
Air-flow is connected to the feed inlet of spray stripping area, and (diamond particles with metal-back after sieving re-enter into air-flow
Secondary removing is carried out to spraying in removing-hierarchy system)；The magnetic separator of first magnetic separation system 3 not with the Buddha's warrior attendant of metal-back
Stone particle discharge port is connected by material conveying pipe with the feed inlet of the magnetic separator of the second magnetic separation system 5, the second magnetic separation system
The discharge port with magnetic diamond particles of the magnetic separator of system 5 is connected by material conveying pipe with the feed inlet of reaction kettle 6, institute
The discharge port for stating reaction kettle 6 is connected by material conveying pipe with the feed inlet of diamond cleaning device 7, and cleaning finishes to obtain the final product
To pure diamond particles；The magnetic separator of second magnetic separation system 5 passes through material without magnetic diamond particles discharge port
Conveyance conduit is connected with diamond cleaning device, and cleaning, which finishes, obtains pure diamond particles.
The system further includes graphite storage device, and the air-flow is to the air current classifying part in spray removing-hierarchy system
It further include graphite discharge port, the graphite discharge port is connected by material conveying pipe with graphite storage device.
Further, the aperture of the sieve is 0.2~0.3mm.
Further, the material conveying pipe can also be conveyer belt.
I.e. the system can guarantee that all diamonds are completely exfoliated after first time magnetic separation, unstripped band metal-back
Diamond particles back into air-flow to common with the broken band shell diamond that newly handles in spray removing-hierarchy system
It removed, be classified, the extension of time will not be both caused due to secondary removing, also ensure that all band shell diamonds are equal
It can remove, obtain pure diamond particles；It is high-efficient, collection rate is high.And the graphite and gold being collected by the system
Belonging to shell does not have any damage and reaction rotten, can recycling and reusing, whole system completes to extract the same of diamond efficient
When, also achieve the recycling and reusing of raw material, further improve economic benefit, reduce production cost, have good society
It can economic benefit.
Embodiment 2
A kind of one of method extracting diamond using diamond environmental protection high efficiency extraction system, this method includes following
Step:
S1: collecting synthesis column to be processed, and synthesis column is crushed；
By the synthesis column being collected into be initially positioned at jaw crusher carry out it is rough and torn, it is rough and torn after material to be placed in pair roller type broken
Machine carries out thin broken, and the partial size for being crushed to particle is less than 2mm；
S2: the broken synthesis column particle of step S1 is placed in air-flow in spray removing-hierarchy system, is first passed around wherein
Air-flow to spray stripping area, by air-flow to spray remove realize synthesis column particle in diamond and metal-back disengaging；Then
Air-flow enters air current classifying region to the material after spray removing, and the classification of graphite powder is realized by air current classifying, collects graphite powder；
Graphite separation, recycling are subjected to i.e. in the step, the graphite being recovered to can be recycled；
Should during when being removed using air-flow to spray, the injection intensity of air-flow is 0.4Mpa, the injection direction of air-flow with
Material it is perpendicular by direction；Air current classifying is carried out by grading wheel, and classification wheel speed control is in 50r/min；Its electricity
Stream is controlled with the amount of classification material.
S3: the surplus material after step S2 collection graphite is placed in magnetic separator and carries out magnetic separation, is separated by magnetic separation
The diamond particles of shelling and the diamond particles and metal-back mixture for having metal-back；
In magnetic separation, the blanking velocity that material enters magnetic separator is 6kg/min, and feed opening is away from magnetic gap from for 60mm, magnetic
The revolving speed of rolling is 45r/min；Magnetism intensity when magnetic separation is 450gs herein；
I.e. by magnetic separation be collected into respectively slough metal-back diamond particles,
And diamond particles and metal-back mixture with metal-back；
S4: the step S3 diamond particles with metal-back being collected into after magnetic separation and metal-back mixture are carried out
Separation, is separated using sieve；
In this process, it since the partial size of metal-back is less than the partial size of the diamond particles with metal-back, uses
Mesh size is that the separation of diamond particles and metal-back with metal-back can be realized in the sieve of 0.2mm, collects metal-back；
It is not affected to metal-back obtained in the process, is able to carry out recycling and reusing；
S5: the diamond particles with metal-back obtained after being classified described in step S4 are delivered to air-flow again and shell to spray
Air-flow is carried out from-hierarchy system to remove spray, sloughs metal-back；
During being somebody's turn to do, the diamond particles with metal-back that do not peel away is re-introduced into air-flow, spray is shelled
From being removed again in-hierarchy system, to realize the diamond particles in recycling synthesis column completely；
S6: the shelling diamond particles being collected into after step S3 magnetic separation being placed in magnetic separator and carry out strong magnetic separation,
By strong magnetic separation, separates diamond particles containing magnetic and be free of the diamond particles of magnetic, collect obtain diamond containing magnetic respectively
Grain and the diamond particles without magnetic；
During being somebody's turn to do, blanking velocity when shelling diamond particles enter magnetic separator is 4000 carats/min, wherein under
Material mouth is away from magnetic gap from the revolving speed 30r/min rolled for 60mm, magnetic；Strong magnetic magnetism intensity when magnetic separation is 2000gs；
S7: the diamond particles obtained by step S6 without magnetic are placed in water and are cleaned to get pure diamond is arrived
Particle；
Diamond particles containing magnetic obtained by step S6, which are placed in reaction kettle, carries out purified treatment: will contain magnetic diamond particles and add
Enter in reaction kettle, sulfuric acid is then added, diamond particles and the mass ratio that sulfuric acid is added are 5:1；200 DEG C are heated to after addition,
And handle 4 hours at such a temperature, after the completion of processing, the discharge of remaining sulfuric acid is recycled, treated diamond particles
It is neutral to get to pure diamond particles using being washed to；The pure diamond particles collection obtained twice is obtained
The pure diamond particles finished product extracted.
Extracting obtained diamond particles is 70~80 mesh, is detected to obtained diamond, the results are shown in Table 1.
The system and method can continuous production, daily 8 hours can extract to obtain 3~4 tons of pure diamond at
Product.
Embodiment 3
The two of a kind of method extracting diamond using diamond environmental protection high efficiency extraction system, this method includes following
Step:
S1: collecting synthesis column to be processed, and synthesis column is crushed；
By the synthesis column being collected into be initially positioned at jaw crusher carry out it is rough and torn, it is rough and torn after material to be placed in pair roller type broken
Machine carries out essence and breaks, and the partial size for being crushed to particle is less than 2mm；
S2: the broken synthesis column particle of step S1 is placed in air-flow in spray removing-hierarchy system, is first passed around wherein
Air-flow to spray stripping area, by air-flow to spray remove realize synthesis column particle in diamond and metal-back disengaging；Then
Air-flow enters air current classifying region to the material after spray removing, and the classification of graphite powder is realized by air current classifying, collects graphite powder；
Graphite separation, recycling are subjected to i.e. in the step, the graphite being recovered to can be recycled；
Should during when being removed using air-flow to spray, the injection intensity of air-flow is 0.5Mpa, the injection direction of air-flow with
Material it is perpendicular by direction；Air current classifying is carried out by grading wheel, and classification wheel speed control is in 60r/min；Its electricity
Stream is controlled with the amount of classification material.
S3: the surplus material after step S2 collection graphite is placed in magnetic separator and carries out magnetic separation, is separated by magnetic separation
The mixture of the diamond particles of shelling and diamond particles and metal-back with metal-back；
In magnetic separation, the blanking velocity that material enters magnetic separator is 7kg/min, and feed opening is away from magnetic gap from for 60mm, magnetic
The revolving speed of rolling is 50r/min；Magnetism intensity when magnetic separation is 500gs herein；
I.e. by magnetic separation be collected into respectively slough metal-back diamond particles,
And diamond particles and metal-back mixture with metal-back；
S4: the step S3 diamond particles with metal-back being collected into after magnetic separation and metal-back mixture are carried out
Separation, is separated using sieve；
In this process, it since the partial size of metal-back is less than the partial size of the diamond particles with metal-back, uses
Mesh size is that the separation of diamond particles and metal-back with metal-back can be realized in the sieve of 0.25mm, collects metal
Shell；
It is not affected to metal-back obtained in the process, is able to carry out recycling and reusing；
S5: the diamond particles with metal-back obtained after being classified described in step S4 are delivered to air-flow again and shell to spray
Air-flow is carried out from-hierarchy system to remove spray, sloughs metal-back；
During being somebody's turn to do, the diamond particles with metal-back that do not peel away is re-introduced into air-flow, spray is shelled
From being removed again in-hierarchy system, to realize the diamond particles in recycling synthesis column completely；
S6: the shelling diamond particles being collected into after step S3 magnetic separation being placed in magnetic separator and carry out strong magnetic separation,
By strong magnetic separation, separates diamond particles containing magnetic and be free of the diamond particles of magnetic, collect obtain diamond containing magnetic respectively
Grain and the diamond particles without magnetic；
During being somebody's turn to do, blanking velocity when shelling diamond particles enter magnetic separator is 5000 carats/min, wherein under
Material mouth is away from magnetic gap from the revolving speed 35r/min rolled for 60mm, magnetic；Strong magnetic magnetism intensity when magnetic separation is 3000gs；
S7: the diamond particles obtained by step S6 without magnetic are placed in water and are cleaned to get pure diamond is arrived
Particle；
Diamond particles containing magnetic obtained by step S6, which are placed in reaction kettle, carries out purified treatment: will contain magnetic diamond particles and add
Enter in reaction kettle, sulfuric acid is then added, diamond particles and the mass ratio that sulfuric acid is added are 5:1；210 DEG C are heated to after addition,
And handle 4 hours at such a temperature, after the completion of processing, the discharge of remaining sulfuric acid is recycled, treated diamond particles
It is neutral to get to pure diamond particles using being washed to；The pure diamond particles collection obtained twice is obtained
The pure diamond particles finished product extracted.
Extracting obtained diamond particles is 50~60 mesh, is detected to obtained diamond, the results are shown in Table 1.
The system and method can continuous production, daily 8 hours can extract to obtain 3~4 tons of pure diamond at
Product.
Embodiment 4
The three of a kind of method extracting diamond using diamond environmental protection high efficiency extraction system, this method includes following
Step:
S1: collecting synthesis column to be processed, and synthesis column is crushed；
By the synthesis column being collected into be initially positioned at jaw crusher carry out it is rough and torn, it is rough and torn after material to be placed in pair roller type broken
Machine carries out essence and breaks, and the partial size for being crushed to particle is less than 2mm；
S2: the broken synthesis column particle of step S1 is placed in air-flow in spray removing-hierarchy system, is first passed around wherein
Air-flow to spray stripping area, by air-flow to spray remove realize synthesis column particle in diamond and metal-back disengaging；Then
Air-flow enters air current classifying region to the material after spray removing, and the classification of graphite powder is realized by air current classifying, collects graphite powder；
Graphite separation, recycling are subjected to i.e. in the step, the graphite being recovered to can be recycled；
Should during when being removed using air-flow to spray, the injection intensity of air-flow is 0.6Mpa, the injection direction of air-flow with
Material it is perpendicular by direction；Air current classifying is carried out by grading wheel, and classification wheel speed control is in 80r/min；Its electricity
Stream is controlled with the amount of classification material.
S3: the surplus material after step S2 collection graphite is placed in magnetic separator and carries out magnetic separation, is separated by magnetic separation
The diamond particles of shelling and the diamond particles and metal-back mixture for having metal-back；
In magnetic separation, the blanking velocity that material enters magnetic separator is 8kg/min, and feed opening is away from magnetic gap from for 70mm, magnetic
The revolving speed of rolling is 60r/min；Magnetism intensity when magnetic separation is 600gs herein；
I.e. by magnetic separation be collected into respectively slough metal-back diamond particles,
And diamond particles and metal-back mixture with metal-back；
S4: the step S3 diamond particles with metal-back being collected into after magnetic separation and metal-back mixture are carried out
Separation, is separated using sieve；
In this process, it since the partial size of metal-back is less than the partial size of the diamond particles with metal-back, uses
Mesh size is that the separation of diamond particles and metal-back with metal-back can be realized in the sieve of 0.3mm, collects metal-back；
Recycling and reusing is carried out to metal-back obtained in the process；
S5: the diamond particles with metal-back obtained after being classified described in step S4 are delivered to air-flow again and shell to spray
Air-flow is carried out from-hierarchy system to remove spray, sloughs metal-back；
During being somebody's turn to do, the diamond particles with metal-back that do not peel away is re-introduced into air-flow, spray is shelled
From being removed again in-hierarchy system, to realize the diamond particles in recycling synthesis column completely；
S6: the shelling diamond particles being collected into after step S3 magnetic separation being placed in magnetic separator and carry out strong magnetic separation,
By strong magnetic separation, separates diamond particles containing magnetic and be free of the diamond particles of magnetic, collect obtain diamond containing magnetic respectively
Grain and the diamond particles without magnetic；
During being somebody's turn to do, blanking velocity when shelling diamond particles enter magnetic separator is 6000 carats/min, wherein under
Material mouth is away from magnetic gap from the revolving speed 40r/min rolled for 70mm, magnetic；Strong magnetic magnetism intensity when magnetic separation is 4000gs；
S7: the diamond particles obtained by step S6 without magnetic are placed in water and are cleaned to get pure diamond is arrived
Particle；
Diamond particles containing magnetic obtained by step S6, which are placed in reaction kettle, carries out purified treatment: will contain magnetic diamond particles and add
Enter in reaction kettle, sulfuric acid is then added, diamond particles and the mass ratio that sulfuric acid is added are 5:2；220 DEG C are heated to after addition,
And handle 5 hours at such a temperature, after the completion of processing, the discharge of remaining sulfuric acid is recycled, treated diamond particles
It is neutral to get to pure diamond particles using being washed to；The pure diamond particles collection obtained twice is obtained
The pure diamond particles finished product extracted.
Extracting obtained diamond particles is 40~45 mesh, is detected to obtained diamond, the results are shown in Table 1.
The system and method can continuous production, daily 8 hours can extract to obtain 3~4 tons of pure diamond at
Product.
The testing result for the diamond that 1 Examples 1 to 3 of table is extracted
Claims (10)
1. a kind of diamond environmental protection high efficiency extraction system, which is characterized in that the system includes crushing system, air-flow to spray removing-
Hierarchy system, the first magnetic separation system, screening system；It further include the second magnetic separation system, reaction kettle, diamond cleaning device；
The crushing system, air-flow pass sequentially through material conveying pipe to spray removing-hierarchy system, the first magnetic separation system and are connected
It connects, first magnetic separation system is equipped with shelling diamond discharge port and the diamond particles discharge port with metal-back；Described
The band shell diamond discharge port of one magnetic separation system is connected by material conveying pipe with screening system, and the screening system is logical
It crosses material conveying pipe and is connected with air-flow to spray removing-hierarchy system；The diamond of the shelling of first magnetic separation system
Grain discharge port is connected by material conveying pipe with the second magnetic separation system, and second magnetic separation system is equipped with diamond containing magnetic
Discharge port and be free of magnetic diamond discharge port；The discharge port of diamond containing magnetic is connected by material conveying pipe with reaction kettle
Logical, the reaction kettle is connected with diamond cleaning device；Described passes through material delivery pipe without magnetic diamond discharge port
Road is connected with diamond cleaning device.
2. diamond environmental protection high efficiency extraction system according to claim 1, which is characterized in that the system further includes that graphite is deposited
Storage device, the air-flow further include graphite discharge port to spray removing-hierarchy system, and the graphite discharge port is defeated by material
Pipeline is sent to be connected with graphite storage device.
3. diamond environmental protection high efficiency extraction system according to claim 1 or 2, which is characterized in that the crushing system
Including coarse crushing system and smart crushing system, the coarse crushing system is jaw crusher, and the smart crushing system is pair
Kibbler roll；The air-flow is airflow milling to spray removing-hierarchy system；First magnetic separation system is magnetic separator；Institute
The screening system stated is sieve, and second magnetic separation system is magnetic separator；
The airflow milling includes air-flow to spray stripping area and air current classifying region.
4. a kind of method for extracting diamond using diamond environmental protection high efficiency extraction system of any of claims 1 or 2, should
Method the following steps are included:
S1. synthesis column to be processed is collected, synthesis column is crushed；
S2. spray is removed by the broken synthesis column of step S1, using air-flow, realizes the disengaging of diamond and metal-back；Then
It is classified using air-flow, realizes the classification of graphite powder；Collect graphite powder；
S3., step S2 is collected to the surplus material progress magnetic separation after graphite, separation, hulling diamond and the Buddha's warrior attendant with metal-back
Stone particle；
S4. the diamond particles and metal-back by gained after step S3 magnetic separation with metal-back are classified, and collect metal-back；
S5. the diamond particles with metal-back obtained after being classified described in step S4 are delivered to air-flow to spray removing-again
Hierarchy system carries out air-flow and removes to spray, sloughs metal-back；
S6. shelling diamond step S3 collected carries out strong magnetic separation, separates diamond particles containing magnetic and is free of magnetic
Diamond particles, collect diamond particles containing magnetic and the diamond particles without magnetic respectively；
S7. step S6 gained is placed in water without magnetic diamond particles and is cleaned to get pure diamond particles are arrived；Step
Diamond particles containing magnetic obtained by rapid S6, which are placed in reaction kettle, carries out purified treatment, then washes, and pure diamond particles can be obtained.
5. the method according to claim 4 for extracting diamond, which is characterized in that institute after synthesis column described in step S1 is broken
The partial size for obtaining particle is less than 2mm；Preferably, the shattering process uses jaw crusher to carry out rough and torn first, then adopts
It is broken that essence is carried out with oppositely rolling roller crusher.
6. the method according to claim 4 for extracting diamond, which is characterized in that shelled using air-flow to spray described in step S2
From when, the intensity of air-flow is 0.4~0.6Mpa, the injection direction of air-flow and material it is perpendicular by direction；Step S2 institute
The air current classifying stated is carried out by grading wheel, and classification wheel speed control is in 45~80r/min.
7. the method according to claim 4 for extracting diamond, which is characterized in that blanking speed when magnetic separation described in step S3
Degree is 6~8kg/min, and feed opening is away from magnetic gap from the 40~60r/min of revolving speed rolled for 60~70mm, magnetic；Wherein when magnetic separation
Magnetism intensity is 400gs~600gs.
8. the method according to claim 4 for extracting diamond, which is characterized in that be classified as described in step S4 using sieve
It is classified, the mesh size used is 0.2~0.3mm.
9. the method according to claim 4 for extracting diamond, which is characterized in that when using strong magnetic separation described in step S6
Blanking velocity be 4000~6000 carats/min, feed opening away from magnetic gap from be 60~70mm, magnetic roll 30~40r/ of revolving speed
min；Strong magnetic magnetism intensity when magnetic separation is 2000~4000gs.
10. the method according to claim 4 for extracting diamond, which is characterized in that diamond containing magnetic described in step S7
It is as follows that grain carries out the step of purified treatment in a kettle: magnetic diamond particles will be contained and be added in reaction kettle, sulfuric acid is then added,
Diamond particles and the mass ratio that sulfuric acid is added are 5:1~2；200~240 DEG C are heated to after addition, at such a temperature handle 3~
5 hours, after the completion of processing, clear water wash diamond particles to neutrality to get arrive pure diamond particles；
Preferably, the mass concentration of the sulfuric acid is >=98%.
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