专利资讯

专利名称:一种复合提炼法从线路板生产厂废料中提取铜粉的工艺专利申请号:CN200910035228.3公开号:CN101658941申请日:2009.09.24公开日:2010.03.03申请人:无锡市霄鹰环境科技有限公司一种复合提炼法从线路板生产厂废料中提取铜粉的工艺,属于电子产品回收、综合利用和环保技术领域。本发明工艺分为6套子系统:废线路板处理、含铜氯化铁处理、废酸处理、CuCl2蚀刻液处理、电解制氢系统和废气处理系统。本发明可同时处理废线路板(HW49)、氯化铜蚀刻液(HW22)、含铜氯化铁(HW22)、废碱(HW35)以及废酸(HW34),将几套     

一种废弃印刷线路板取制样方法的应用

随着我国家电和电子产品进入淘汰报废高峰期,废弃印刷线路板的数量也随之急剧增加,线路板中含有大量的金属,具有很高的回收价值,而市场上对废弃印刷线路板的回收缺乏健全的制度和标准、规范的方法。对废弃线路板取制样方法展开试验研究,借鉴国外关于电子废料的抽样检验经验,按照抽样、初破、分拣、取样、粉碎、分选等流程操作后,实现样品中金属和非金属物料的有效分离。金属物料和非金属物料分别制备成试样后经化验分析出品位数据,根据比例和数量加权计算出废弃线路板的综合品位,从而形成一套科学的、标准的线路板取制样方法,为废线路板回收交易提供精确的数据支持。     

专利资讯

专利名称：一种利用高压热风自动分离废弃线路板元件的方法 本发明涉及一种利用高压热风自动分离废弃线路板元件的方法,该方法包括将待分离的废弃线路板采用钉式结构固装在传送带上进行传送,采用高压高温气流冲击的分离方式分离所述废弃线路板的基板和元器件;分离时将高压高温气流以风刀或类似风刀开缝口的形式吹出,以去除焊料并迫使元器件脱落。本发明实现了自动分离废弃线路板元件的工业应用,并无害化处理有毒有害气体,高效处理线路板并无损地回收大量价值元件,为再资源化提供了可能。     

废弃印刷线路板中环氧树脂的资源化技术

印刷线路板是电子工业的基础,伴随着电子废弃物的快速增长,废弃印刷线路板的回收已经成为迫切需要研究的领域。对废弃印刷线路板中环氧树脂常用的资源化方法、物理法、热解法、超临界法及化学溶剂法等进行了介绍,并比较了几种方法的优缺点。     

专利资讯

<正>专利名称:一种从废旧线路板上直接电解铜的方法及装置专利申请号:CN201410160897.4公开号:CN105018966A申请日:2014.04.21公开日:2015.11.04申请人:上海奇谋能源技术开发有限公司本发明公开了一种从废旧线路板上直接电解铜的方法及装置。所述方法是将废旧线路板放入到电解槽中,将不溶阳极的一端与电解电源的正极相连,另一端与废旧线路板的     

废弃印刷线路板资源化处理的研究进展

介绍了当前废弃印刷线路板资源化处理的主要方法,包括湿法、火法、机械法、生物法、超临界流体法和等离子体熔炼法等。综述了各种处理方法的侧重点及利弊;提出热解法与机械法联用可较好地解决在破碎过程中所遇到的问题,具有较大优势,可作为未来大量废弃印刷线路板资源化处理工艺研究的重点。     

一种分类回收线路板中金属的方法

<正>专利申请号:CN201810699652公开号:CN108754154A申请日:2018.06.29公开日:2018.11.06申请人:肇庆高新区国专科技有限公司本发明涉及一种分类回收线路板中金属的方法,具体涉及回收线路板(PCB)中的铜、锡、镍、钯、金、银和树脂。该技术先后通过粉碎、酸浸、阳极旋转迫击电解、浮选等工艺流程。     

专利资讯

专利名称：废旧印刷电路板中非金属材料的再利用方法,专利名称：电路板及电镀污泥资源化回收工艺,专利名称：利用废弃印刷电路板中非金属材料制备酚醛模塑料的方法,专利名称：一种汽车与电子废弃电路板的脱焊设备,专利名称：从镀金印刷电路板废料中回收金和铜的方法.     

我国废弃电子线路板资源化再生利用技术现状与展望

随着电子行业的迅猛发展,废弃电子线路板的处理和利用成为各方关注的热点。废弃电子线路板处理不好将成为一大环境污染问题,而利用好了又可变废为宝,产生巨大的价值。阐述我国进行废弃电子线路板资源化再生利用的重要性和紧迫性,介绍废弃电子线路板处理利用技术的研究现状,并时其研究重点和发展趋势做出展望。     

手机回收：被政策遗忘的角落

记者采访了解到,废旧手机的正规处置过程应该是：首先取出手机中存储个人信息的介质,送至正规处置企业;在专业车间内,进行人工拆解,将手机分为塑料、线路板、芯片等几大类;然后根据电子废料的情况,有的经过破碎等处置,有的则要经过电解等化学处置,或回收利用,或彻底销毁。     

铜接地网对变电站周围环境的铜污染研究

对安徽省某500 kV变电站周围土壤中的铜含量进行了测试,结果表明,该变电站周围土壤中的铜含量的中值和平均值均超过安徽地区土壤环境的平均值,但其含量均未超过二级标准值.按照单因子指数法进行评价,远小于1；按照内梅罗综合指数法进行评价,仅为0.3235,明显低于0.7的安全值,两者均表明该变电站周围土壤是清洁的,并未受到铜污染.     

废铜催化剂的综合利用

研究了以湿法回收利用废铜催化剂中的铜、锌制取氧化亚铜和氧化锌的原理以及最佳工艺条件。该工艺可同槽进行浸取、蒸氨、还原、中和水解等操作,生产成本低,产品质量好,工艺过程中无三废排放,具有很好的综合效益。     

The contemporary copper cycle of Asia

A regional stock and flow model for an industrial metal was developed based on the substance-flow framework. Using this model, the contemporary copper cycle of the Asian region was constructed by aggregating country-level production and import and export data for different stages of the copper cycle. The reliability and availability of data were assessed both qualitatively and quantitatively. Asia as a region is a net importer of copper. There is a significant build-up of copper in use at a rate of nearly 3TgCu/year. The per capita generation of copper waste (0.4kgCu/(capita-year)) and the rate of secondary recovery of copper are low compared with Europe and North America. Japan's rates of use, waste generation, and recycling of copper are all much larger than the continental average. A tremendous potential exists in the region to utilize the copper content of the in-use reservoir, and subsequently to enhance copper recycling rates in the future. A set of metrics for the copper cycle is suggested in order to address sustainability issues related to resource policy and the environmental management of copper.     

Scenarios for reducing copper smelting-related atmospheric mercury emissions through copper recycling and mercury removal technologies in major countries

Journal of Material Cycles and Waste Management - Smelting of copper, a crucially important resource, releases small amounts of mercury into the atmosphere, thereby endangering people and the...     

Processing of copper converter slag for metal reclamation. Part I: Extraction and recovery of copper and cobalt.

Clean processing of copper converter slag to reclaim cobalt and copper could be a challenge. An innovative and environmentally sound approach for recovering valuable metals from such a slag has been developed in the present study. Curing the slag with strong sulphuric acid, without re-smelting or roasting as practiced currently in the industry, render it accessible to leaching, and more than 95% of cobalt and up to 90% of copper was extracted together with iron by water leaching, leaving silica behind in a residue. The copper in the leach liquor was recovered by cementation with iron and the dissolved iron crystallized as ferrous sulphate monohydrate. The cobalt in the mother-liquor rich in iron was recovered by either cementation or sulphide precipitation. Operation variables in the new process were also investigated and optimized.     

极谱法测定水和污水中的铜

采用JP-2型示波极谱仪在醋酸-醋酸钠底液中测定水和污水中铜的含量,具有灵敏度高、检出限低的优点.     

Recovery of copper from contaminated soil by flushing

In this work the development of a process for the recovery of copper from contaminated industrial soils is presented. Experimental tests on a standard soil contaminated with a solution of copper chloride were carried out. The metal was extracted from the contaminated soil by flushing with a 0.1 M aqueous solution of an ethylenediaminetetraacetic acid (EDTA) sodium salt. A maximum copper extraction efficiency of about 60% was observed. Copper was then separated from the extracted solution by precipitation with sodium hydroxide after addition of ferric sulfate.     

Recovery of copper and cobalt from ancient slag.

About 2.5 million tonnes of copper smelter slag are available in Küre, northern part of Turkey. This slag contains large amounts of metallic values such as copper and cobalt. A representative slag sample containing 0.98% Cu, 0.49% Co and 51.47% Fe was used in the experimental studies. Two different methods, direct acid leaching and acid baking followed by hot water leaching were used for recovering Cu and Co from the slag. The effects of leaching time, temperature and acid concentration on Cu- and Co-dissolving efficiencies were investigated in the direct acid leaching tests. The optimum leaching conditions were found to be a leaching time of 2 h, acid concentration of 120 g L(-1), and temperature of 60 degrees C. Under these conditions, 78% Cu and 90% Co were extracted. In the acid baking + hot water leaching tests, 74% Co was dissolved after 1 h of roasting at 200 degrees C using a 3:1 acid:slag ratio, whereas the Cu-dissolving efficiency was 79% and the total slag weight loss was approximately 50%.     

Processing of copper anodic-slimes for extraction of valuable metals

This work focuses on processing of anodic slimes obtained from an Egyptian copper electrorefining plant. The anodic slimes are characterized by high concentrations of copper, lead, tin and silver. The proposed hydrometallurgical process consists of two leaching stages for the extraction of copper (H(2)SO(4)-O(2)) and silver (thiourea-Fe3+), and pyrometallurgical treatment of the remaining slimes for production of Pb-Sn soldering alloy. Factors affecting both the leaching and smelting stages were studied.