Method for preparing nano stannous sulfide from tin-containing electronic waste by one-step method

A technology of electronic waste and stannous sulfide, applied in chemical instruments and methods, tin compounds, nanotechnology, etc., can solve the problems of harsh preparation conditions, low economic added value, and low output, and achieve the effect of efficient and selective separation
CN112391533AActive Publication Date: 2021-02-23CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2021-02-23

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Abstract

The invention discloses a method for preparing nano stannous sulfide from tin-containing electronic waste by a one-step method. The method comprises the following steps that the tin-containing electronic waste and an additive composed of calcium sulfide and silicon dioxide are uniformly mixed and then are subjected to agglomeration, agglomerates are placed in a reducing atmosphere to be subjectedto reduction roasting at 750 DEG C-900 DEG C, roasted volatile matters enter a weak reducing atmosphere to be subjected to reduction roasting at 450 DEG C-700 DEG C, and nano stannous sulfide powder is obtained. According to the method, the tin-containing electronic waste serves as the raw material, tin is efficiently recycled, the high-purity nano stannous sulfide powder material is prepared, waste utilization is achieved, the economic additional value is high, and the method is easy to operate, low in production cost, environmentally friendly and capable of meeting the industrial productionrequirement.
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Description

Technical field

[0001] The present invention relates to a method of preparing nanofuses, and more particularly to a method of recovering tin in a tin-containing electron waste in a tin-containing electron waste, a tin-containing electron waste, and a method of recovering tin in high purity nano-zinc oxide. It belongs to the technical field of electronic waste recovery.Background technique

[0002] The e-waste in the "City Mine" contains a huge reserves, which is the focus of future extraction of metallurgical attention. Unlike natural ores, in electronic waste, metal elements are in the form of metallic and alloys, so they cannot be completely similar to traditional metallurgical processes. At the same time, there are a wide variety of metal elements in electronic waste, and the content is extremely high. If it is completely put into traditional fire, the wet metallurgy process, the metal element is high, especially during the fire, gold and silver and other precious metals are easy. It i...

Claims

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