GB/T 32356-2015Guide of design for recycling of electrical and electronic products (English PDF)

3.1 Disassembly

The characteristic that wasted electrical and electronic products are easily disassembled manually or mechanically.

3.2 Reusability

The characteristic that wasted electrical and electronic products or components are easily reused based on their original purposes or after cleaning up and repair.

3.3 Recyclability

The characteristic that parts of wasted electrical and electronic products are easily reused or materials are easily recycled.

3.4 Design for recycling

A systematic design that focuses on improving the recyclability rate in the end of product life.

4.1 Goal

Design for recycling aims to improve the recyclability rate. To achieve the aforementioned goal, implement the design for recycling.

- Improve.

- the disassembly of wasted electrical and electronic products;

- the reusability of parts of wasted electrical and electronic products;

- the recyclability of wasted electrical and electronic products material, especially the recyclability of precious metals, and rare earth materials.

- Reduce.

- amount of energy recovery of wasted electrical and electronic products;

- disposal amount of wasted electrical and electronic products.

- Reduce or avoid.

- Secondary pollution during processing.

Terms expression and relation of wasted electrical and electronic products are shown in Figure 1.

5.1 Identifying goal and demand

The process of introducing design for recycling into design for environmental consciousness shall comply with the provisions of GB/T 23686-2009. Identify the goal and requirements of design for recycling. The goal and requirements shall mainly include but not limited to.

- requirements of environmental laws and regulations;

- customer demands for product;

- expected goal of recycling enterprises, e.g., economy of recycling process.

5.2 Collecting data

Data need to be collected for product evaluation include but not limited to.

- information of product parts. characteristics (e.g., quantity, weight, material composition and type, etc.), connections between parts (e.g., adhesive, fastener and connector type).

NOTE: Substances contained in identification material shall ensure the correctness of subsequent processing procedures.

- identification of surface treatment technique of product parts (painting, coating); adhesives shall help in taking specific treatment technique and separation measures during recycling process.

Wasted products processing information. techniques and effects used by each processing step, required time and cost. Such information collection shall focus on recycling enterprise feedback or field research. The processing of wasted electrical and electronic products is shown in Figure 3.

5.4 Evaluation and improvement

5.4.1 Summary

In order to find the opportunity to continuously improve the recyclability rate of product, it shall evaluate the design results of 5.3 in time.

5.4.2 Classification of recyclability of product parts

Based on reusability and recyclability of product parts, product parts shall be classified according to the following categories.

- reusable;

- the use of recyclable homogeneous materials;

- the use of recyclable heterogeneous materials;

- part of the material can be recycled;

- material cannot be recycled but energy recovery is applicable;

- difficult to treat, and the material cannot be recycled or energy recovery is impossible.

5.4.3 Product disassembly

Product disassembly mainly depends on the fastening mechanism product parts use. Based on the guideline for parts required to be disassembled stipulated in GB/T 29770, the product shall be classified as the following types.

- can be manually disassembled / simply mechanically disassembled (parts can be dismantled from product);

- other methods can be used to disassemble / crushing (material to separate parts);