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Information safety destruction and recycling method of semiconductor storage medium

A technology for storage media and information security, applied in chemical instruments and methods, solid separation, separating solids from solids with airflow, etc., can solve the problems of no research information destruction, no consideration of magnetic materials, etc., and achieve safe destruction , prevent over-crushing and high-efficiency separation

Inactive Publication Date: 2013-07-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, the destruction and recycling of semiconductor storage media are still blank
Chinese invention patent "Crushing and High-voltage Electrostatic Separation of Waste Circuit Boards" (Xu Zhenming et al., Patent No. 200510023785.5) can separate metals and non-metals in waste circuit boards, but there is no research on information destruction, and no consideration is given to effectively separating out the impact on the crushing process Significant influence of magnetic materials and non-metallic particles on high voltage electrostatic separation

Method used

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  • Information safety destruction and recycling method of semiconductor storage medium

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0031] see figure 1 , figure 1 It is a flow chart of the 2-stage crushing-3-stage winnowing process of the information security destruction and resource recovery method of the semiconductor storage medium of the present invention. As shown in the figure, a method for information security destruction and recycling of semiconductor storage media includes the following steps:

[0032] 1. Put the semiconductor storage media to be destroyed, such as circuit board cards containing chips, memory cards, USB flash drives, MP 3 , MP 4 Put the storage part into the feeding trough, and send it to the primary crusher through the conveyor belt for primary crushing treatment, and crush it to a particle size of 3mm-15mm;

[0033] 2. Use a magnetic separator to separate the ferromagneti...

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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 [0001] The invention relates to a method for information security destruction and resource utilization of a semiconductor storage medium, in particular to a chip-containing circuit board card, memory card, USB flash drive, MP 3 , MP 4 A method for information security destruction and resource utilization of storage media such as storage media. Background technique [0002] A storage medium refers to a carrier that stores data. With the development of information technology, various electronic storage media have become the main carrier of modern recorded information. Every year in our country, about 4 million hard disks are eliminated, 2.9 billion CDs and hundreds of millions of integrated circuit boards need to be destroyed. Semiconductor memory refers to memory that uses semiconductor circuits as storage media. According to its application, it can be divided into circuit board cards containing chips, memory cards, USB flash drives, MP 3 , MP 4 storage p...

Claims

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Application Information

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IPC IPC(8): B02C23/14B07B9/02B03C1/00B02C21/00
Inventor 许振明薛面强李佳
Owner SHANGHAI JIAO TONG UNIV
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