SBIR Phase I: Reclamation of Tungsten Carbide from Scrap Tools

SBIR 第一阶段：从报废工具中回收碳化钨

• 批准号: 9961092
• 负责人: Tirumalai Sudarshan
• 金额: $ 10万
• 依托单位: Materials Modification Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9961092&HistoricalAwards=false
• 关键词: SBIR; Phase; Reclamation; Tungsten; Carbide

This Small Business Innovation Research (SBIR) Phase I project will develop a new technology to reclaim tungsten carbide (WC) directly from WC-cobalt (Co) scrap, generated each year by the cutting tool industry in an amount worth 2 billion dollars. Since segregation by grade is nearly impossible in that it must be collected from end users and since mixing grades is highly likely, a recovery process that focuses on WC is needed. Current methods for recovery are tedious, time consuming, and expensive due to use of highly corrosive chemicals and high energy consumption. The proposed electrochemical process will eliminate the hydrogen reduction step and the recarburization step.Recovered WC can be re-coated and remanufactured into WC-Co tools for applications in machining, oredrilling, in forming tools and dies, and nozzles for oil and natural gas burners, inkjets and abrasive waterjet cutting. Other applications for recovered WC include materials used in electronics, composite coatings for wear resistance, and counterweights for gyroscopes. The electrochemical approach is expected to result in significant cost savings in the recovery process by reducing the amount of chemicals used, lower the equipment infrastructure use of chemicals, and reduce energy costs.

这项小型企业创新研究（SBIR）I阶段项目将开发一项新技术，以直接从WC-Cobalt（CO）废料收回碳化钨（WC）。 由于几乎不可能从最终用户收集划分，并且很可能需要将其混合成绩，因此需要将重点放在WC上的恢复过程。 当前的恢复方法由于使用高度腐蚀性化学物质和高能量消耗而乏味，耗时且昂贵。 拟议的电化学过程将消除减少氢的步骤和重新浮动的步骤。可以重新涂抹后的WC，并将其再制造为WC-CO工具，用于用于加工，Oredrilling，形成工具和模具的加工，以及用于石油和天然气燃烧器的喷嘴，喷墨和磨料的水夹。 回收的WC的其他应用包括电子产品中使用的材料，用于耐磨性的复合涂料以及陀螺仪的配重。 预计电化学方法有望通过减少所使用的化学物质，降低设备基础设施的使用并降低能源成本，从而在恢复过程中节省大量成本。