CN103191825A - Information safety destruction and recycling method of semiconductor storage medium - Google Patents
Information safety destruction and recycling method of semiconductor storage medium Download PDFInfo
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- CN103191825A CN103191825A CN2013101432366A CN201310143236A CN103191825A CN 103191825 A CN103191825 A CN 103191825A CN 2013101432366 A CN2013101432366 A CN 2013101432366A CN 201310143236 A CN201310143236 A CN 201310143236A CN 103191825 A CN103191825 A CN 103191825A
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Abstract
The invention discloses an information safety destruction and recycling method of a semiconductor storage medium. The method comprises the following steps of: (1) performing one-stage crushing on the semiconductor storage medium to be destructed; (2) separating a ferro-magnetic material by a magnetic separator; (3) performing multi-stage crushing by a multi-stage crusher; (4) removing nonmetal particles with the particle size less than 0.05mm to 0.5mm from the material by a multi-stage air separation system; and (5) screening the material through a vibrating screen. According to the method, the information of the semiconductor storage medium can be safely destructed and recycled. The method has the characteristics of good destruction effect, high degree of automation, high applicability and the like.
Description
Technical field
The information security that the present invention relates to a kind of semiconductor storage medium is destroyed and method of resource, particularly relates to the circuit-board card, RAM card, flash disk, the MP that contain chip
3, MP
4Deng the information security destruction of storage medium and the method for resource.
Background technology
Storage medium refers to store the carrier of data.Along with the development of information technology, all kinds of electronic storage mediums become the main carrier of modern recorded information.Annual nearly 4,000,000 hard disks of China are eliminated, and 2,900,000,000 CDs, several hundred million surface-mounted integrated circuit calorie requirements are destroyed.Semiconductor memory refers to the semiconductor circuit to be the memory of medium, can be divided into circuit-board card, RAM card, flash disk, the MP that contains chip according to the difference of its application
3, MP
4Storage area.A large amount of uses of concerning security matters units such as semiconductor storage medium is a member of a political party, political affairs, office of army, financial sector, important scientific research department, the universities and colleges of university that bear national important scientific research task, military installations, military enterprise are for information security and security work have brought new challenge.
On the one hand, " office of security committee of the Central Committee of the Communist Party of China, National Administration for the Protection of State Secrets are about the regulation of state secret carrier security management " regulation: " destroy secret carriers such as storage medium, should adopt the method for physics or chemistry thoroughly to destroy ".It is last link of state secret carrier security management that carrier is destroyed, and storage medium must obtain safe destruction, to guarantee information security.
On the other hand, because component complexity such as flash disk, circuit-board card, flash-type device stores part, chip, contain magnetisable material (iron and steel), non-ferrous metal (copper, aluminium, zinc), rare precious metal (gold, silver, palladium), semi-conducting material (silicon, GaAs, germanium), nonmetallic materials (plastics, wiring board baseplate material), have very high recovery value.Simultaneously, poisonous and harmful substances such as leaded, mercury, cadmium, poly-dibromodiphenyl ether, if deal with improperly, atmosphere pollution that will be serious, soil and water body environment cause significant damage to the ecosystem and human health.Therefore the safety of storage medium is destroyed with the resource recovery and is had information security destruction, solid waste resource recovery and the triple meanings of protection environment.
The destruction recovery technology of present storage medium mainly comprises writes soverlay technique, demagnetization technology, physical damage technology, chemical attack technology and hot technology for eliminating.Because technology itself is write soverlay technique and the demagnetization technology all can not reach information destroying completely, can only satisfy low-level requirement.Chinese invention patent " a kind of physical destroying method of computer hard disc data " (Zhang Anbing etc., application number 200710165217.8) has been invented a kind of type self-destroyed hard disk, can satisfy under the emergency condition data and destroy fast.Utility model patent " a kind of degaussing gear " (Zhu Qingqiang etc., application number 201120363135.6) can be destroyed fast to magnetic storage medium.But the destruction of semiconductor storage medium and resource still are in space state.Chinese invention patent " fragmentation of waste and old circuit board and high-pressure electrostatic separation method " (Xu Zhenming etc., the patent No. 200510023785.5) metal in can the separating waste, worn circuit board and nonmetal, but do not have research information to destroy, not have consideration effectively to isolate shattering process is had the magnetic material of material impact and non-metallic particle to the influence of high-pressure electrostatic sorting.
Summary of the invention
The objective of the invention is to the deficiency at above-mentioned prior art existence, the information security that proposes a kind of semiconductor storage medium is destroyed and method of resource, with the information destroying in the semiconductor storage medium, and metals such as its magnetic material that comprises, copper, aluminium, lead, gold are separated with nonmetal, realize that the safety of semiconductor storage medium is destroyed and resource.
In order to realize such purpose, technical solution of the present invention is as follows:
A kind of information security of semiconductor storage medium is destroyed and method of resource, and its characteristics are that this method comprises the steps:
Step 1., semiconductor storage medium to be destroyed is by the one-level break process, realizes separating of ferrimagnet and semiconductor storage medium;
Step 2., the material that 1. step is obtained carries out the ferrimagnet separating treatment by magnetic separator, the separating ferrum magnetic material;
3. step is carried out multiple stage crushing to the material of removing ferrimagnet and is handled (according to actual requirement, can adopt the multiple stage crushing more than 2 grades);
Step 4., the material that 3. step is obtained is removed granularity by multistage pneumatic separation system (more than 2 grades) less than the nonmetal composition granule of 0.05mm-0.5mm;
4. 5. step obtain heavy material to step and sieve processing by vibratory sieve:
The oversize material is back to the afterbody disintegrating machine carries out break process again;
Undersize material is carried out metal and nonmetal separating treatment by the high-pressure electrostatic separator.
1. described step carries out the one-level break process is 3mm-15mm to granularity.
3. described step carries out multiple stage crushing, and to handle (can adopt multiple stage crushings such as secondary, three grades, level Four according to actual conditions, up to meeting the demands) be 0.05mm-1.5mm to granularity.
Described multiple stage crushing motor spindle mesh size requires to select with material characteristic to be destroyed according to destroying.
Three grades when broken if desired, 3. carry out after two-stage crushing handles by described step, carry out three grades of break process by tertiary crusher after, carry out step 4. again; Multiple stage crushing if desired, by that analogy.
Described step 4. in the multistage pneumatic separation system comprise one-level pneumatic separator, secondary pneumatic separator and force 3 wind power separator (be example with three grades) successively.
Be provided with opening at described pneumatic separating motor spindle, by regulating openings of sizes control and regulation interior flow field, realize the control to material stream in the system, realize that the sorting of the nonmetal composition granule of granularity 0.05mm-0.5mm separates.
The described step 5. screen-aperture of middle vibratory sieve requires to select with material characteristic to be destroyed according to destroying.
Compared with prior art, the invention has the beneficial effects as follows:
(1) adopt broken mode to realize the destruction of semiconductor storage medium, meanwhile, metal and nonmetallic dissociating are achieved.Consider from the angle of environmental protection and energy consumption, only need in the destruction process semi-conducting material is crushed to certain grade, reach relevant criterion, and do not need all material all is crushed to powder, so after the one-level fragmentation, adopt the magnetic force sorting, the ferrimagnet that dissociates is separated, then that other materials is further broken.
(2) granule non-metal powder material is realized metal and material impact is arranged separating of non-metallic particle the high-pressure electrostatic sorting, employing is cut the streaming cyclone separator as preliminary treatment, according to density contrast non-metal powder is removed from granule materials, and then had different electric conductivity by variable grain and realize separating of metal and non-metallic material.
(3) winnowing machine bottom is provided with adjustable opening, can realize control to winnowing machine interior flow field and particle track by regulating openings of sizes, and then realizes the semiconductor safety pin is ruined material current control with the resource recovery system.
(4) in order to cut down the consumption of energy, prevented the generation of broken phenomenon, the one-level selection by winnowing captures material and enters before the electric separation, carry out bolting, below standard oversize material returns two-stage crushing (can adopt multistage as requested) by feeding screw and further dissociates, and undersize material then enters the high-pressure electrostatic separation system and carries out the branch selection operation.
(5) in practical operation, the present invention can determine technological parameter according to destroying requirement and material characteristic.The present invention can realize the safety destruction of semiconductor storage medium, can effectively prevent the generation of broken phenomenon, realizes metal and nonmetallic efficient separation such as ferrimagnet, copper aluminium gold.Destroy recovery system and operate under negative pressure, dust is able to effective collection, the metal of separation and nonmetal further recycling.
Description of drawings
Fig. 1 is that the destruction of semiconductor storage medium of the present invention and 2 grades of fragmentation-moderate breezes of method of resource select flow chart.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described, but should limit protection scope of the present invention with this.
See also Fig. 1, Fig. 1 destroys for the information security of semiconductor storage medium of the present invention and 2 grades of fragmentation-moderate breezes of method of resource select flow chart.As shown in the figure, a kind of information security of semiconductor storage medium is destroyed and method of resource, may further comprise the steps:
1, with semiconductor storage medium to be destroyed circuit-board card, RAM card, flash disk, MP as containing chip
3, MP
4Put into charging spout Deng storage area, send into the one-level disintegrating machine by conveyer belt and carry out the one-level break process, being crushed to granularity is 3mm-15mm;
2, adopt magnetic separator that ferromagnetic material is separated;
3, material after the magnetic separation is entered secondary breaker by screw input feeder and carry out the two-stage crushing processing, being crushed to granularity is 0.05mm-1.5mm;
4, material enters the one-level winnowing machine, and granularity is removed less than the nonmetal composition granule of 0.05mm-0.5mm, and the less light material of density enters secondary winnowing machine force 3 wind successively and selects machine, and last dust is collected by deduster,
5, after the one-level winnowing machine is handled heavy material enter vibratory sieve and sieve processing:
The oversize material is back to secondary breaker carries out break process again;
Undersize material is carried out metal and nonmetal separating treatment by the high-pressure electrostatic separator, remove the nonmetallic mixed material of small particle diameter and realize efficiently separating of metal and minute metal by electric separation.
One-level disintegrating machine and two-stage crushing motor spindle mesh size and vibrating screen mesh aperture can require to select with material characteristic to be destroyed according to destroying among the present invention.If it is high that destruction requires, then crushing system can be extended to three grades of fragmentations or the multiple stage crushing more than three grades.
Selection by winnowing motor spindle openings of sizes, high-pressure electrostatic separator voltage, transfer roller rotating speed, distance between electrodes etc. can be determined actual above-mentioned technological parameter according to the material situation among the present invention.
Claims (9)
1. the information security of a semiconductor storage medium is destroyed and method of resource, it is characterized in that this method comprises the steps:
Step 1., semiconductor storage medium to be destroyed carries out the one-level break process by the one-level disintegrating machine;
Step 2., the material that 1. step is obtained carries out the ferrimagnet separating treatment by magnetic separator;
3. step carries out two-stage crushing or multiple stage crushing processing to the material of removing ferrimagnet;
Step 4., the material that 3. step is obtained is removed granularity by the multistage pneumatic separation system less than the nonmetal composition granule of 0.05mm-0.5mm;
4. 5. step obtain heavy material to step and sieve processing by vibratory sieve:
The oversize material is back to the afterbody disintegrating machine carries out break process again;
Undersize material is carried out metal and nonmetal separating treatment by the high-pressure electrostatic separator.
2. the information security of semiconductor storage medium according to claim 1 is destroyed and method of resource, it is characterized in that 1. described step carries out the one-level break process is 3mm-15mm to granularity.
3. the information security of semiconductor storage medium according to claim 1 is destroyed and method of resource, it is characterized in that, 3. described step carries out afterbody, and to be crushed to granularity be 0.05mm-1.5mm.
4. destroy and method of resource according to the information security of claim 2 or 3 described semiconductor storage mediums, it is characterized in that, described multiple stage crushing motor spindle mesh size requires to select with material characteristic to be destroyed according to destroying.
5. the information security of semiconductor storage medium according to claim 1 is destroyed and method of resource, it is characterized in that, 3. described step carries out after two-stage crushing handles, carry out three grades of (or multistage) break process by tertiary crusher after, carry out step 4. again.
6. the information security of semiconductor storage medium according to claim 1 is destroyed and method of resource, it is characterized in that, described step 4. middle multistage pneumatic separation system comprises one-level pneumatic separator, secondary pneumatic separator and force 3 wind power separator successively.
7. the information security of semiconductor storage medium according to claim 6 is destroyed and method of resource, it is characterized in that described one-level pneumatic separator, secondary pneumatic separator and force 3 wind power separator are cuts the streaming cyclone separator.
8. destroy and method of resource according to the information security of claim 6 or 7 described semiconductor storage mediums, it is characterized in that, be provided with opening at described pneumatic separating motor spindle, by regulating openings of sizes control and regulation interior flow field, realization realizes that to the control of material stream in the system sorting of the nonmetal composition granule of granularity 0.05mm-0.5mm separates.
9. the information security of semiconductor storage medium according to claim 1 is destroyed and method of resource, it is characterized in that, the described step 5. screen-aperture of middle vibratory sieve requires to select with material characteristic to be destroyed according to destroying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101432366A CN103191825A (en) | 2013-04-23 | 2013-04-23 | Information safety destruction and recycling method of semiconductor storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101432366A CN103191825A (en) | 2013-04-23 | 2013-04-23 | Information safety destruction and recycling method of semiconductor storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881166A (en) * | 2017-02-28 | 2017-06-23 | 刘平优 | A kind of computer hardware storage device multistage demagnetization breaker |
| CN108579976A (en) * | 2018-04-13 | 2018-09-28 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | The method for sieving of screening plant and photovoltaic module crushed mixture |
| CN109433624A (en) * | 2018-11-05 | 2019-03-08 | 宇恩环境工程有限公司 | A kind of full-automatic utilization system of domestic garbage burning electricity generation clinker |
| CN111185301A (en) * | 2020-01-10 | 2020-05-22 | 江苏梵爵科技有限公司 | Dry-type environment-friendly ore dressing system and ore dressing method |
| CN113420889A (en) * | 2020-12-16 | 2021-09-21 | 阿里巴巴集团控股有限公司 | Hard disk storage device, transportation device, destruction device, control method and system thereof, electronic device, and computer-readable storage medium |
| CN113469444A (en) * | 2021-07-09 | 2021-10-01 | 北京中超伟业信息安全技术股份有限公司 | Confidential storage medium crushing and screening method |
| WO2022156070A1 (en) * | 2021-01-21 | 2022-07-28 | 惠州市特创电子科技股份有限公司 | Method for separation and recovery of circuit board drilling waste |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106881166A (en) * | 2017-02-28 | 2017-06-23 | 刘平优 | A kind of computer hardware storage device multistage demagnetization breaker |
| CN108579976A (en) * | 2018-04-13 | 2018-09-28 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | The method for sieving of screening plant and photovoltaic module crushed mixture |
| CN108579976B (en) * | 2018-04-13 | 2023-10-27 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Screening device and screening method of crushed mixture of photovoltaic module |
| CN109433624A (en) * | 2018-11-05 | 2019-03-08 | 宇恩环境工程有限公司 | A kind of full-automatic utilization system of domestic garbage burning electricity generation clinker |
| CN111185301A (en) * | 2020-01-10 | 2020-05-22 | 江苏梵爵科技有限公司 | Dry-type environment-friendly ore dressing system and ore dressing method |
| CN111185301B (en) * | 2020-01-10 | 2022-09-30 | 江苏梵爵机械制造有限公司 | Dry-type environment-friendly ore dressing system and ore dressing method |
| CN113420889A (en) * | 2020-12-16 | 2021-09-21 | 阿里巴巴集团控股有限公司 | Hard disk storage device, transportation device, destruction device, control method and system thereof, electronic device, and computer-readable storage medium |
| WO2022156070A1 (en) * | 2021-01-21 | 2022-07-28 | 惠州市特创电子科技股份有限公司 | Method for separation and recovery of circuit board drilling waste |
| CN113469444A (en) * | 2021-07-09 | 2021-10-01 | 北京中超伟业信息安全技术股份有限公司 | Confidential storage medium crushing and screening method |
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Application publication date: 20130710 |