Scholarlink

Rio Tinto KennecottRio Tinto Kennecott smelterSmelter personnel identified issues around the dry feed (copper concentrateCopper concentrate, slagSlag concentrateConcentrate, coolant, and flux) loss-in-weight (LIW)Loss-In-Weight (LIW) screw feeder system feeding the smelterSmelter’s flash smelting furnaceFlash smelting furnace. Due to properties associated with a finely ground dried concentrateConcentrate and slagSlag concentrateConcentrate, the screw feeder system suffered from flushingFlushing, which caused excess feed to rush directly through the screw feeder into the furnaceFurnace’s concentrateConcentrate burner. Despite multiple “improvements” of the screw feeder system, flushingFlushing persisted. Personnel from the Rio Tinto KennecottRio Tinto Kennecott’s Projects, EngineeringEngineering, and Technical teams evaluated replacementReplacement options, with a RotoFeedRotoFeed®® LIW system chosen as the best choice due to its limited path for feed to flush through the system. This paper will describe the decision process, installation, and the results of changing to the new LIW feed system. This paper will also discuss the additional feed preparation that is required upstream of the system to maintain the RotoFeedRotoFeed®® integrity and limit wear. Initial results of the installation showed drastically reduced flushingFlushing, and it decreased overall maximum feed rate deviation from ± 15% to less than ± 2% of setpoint. After eight months of operationOperation, the RotoFeedRotoFeed®® system performancePerformance deteriorated and eventually a replacementReplacement RotoFeedRotoFeed®® was installed. This paper will discuss the wear found on the original RotoFeedRotoFeed®® units and potential RotoFeedRotoFeed®® designDesign improvements.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Improvements of a Copper Dry Feed Loss-In-Weight Feed System: RotoFeed® Installation on a Flash Smelting Furnace

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Ryan D. Wilde,
  • Dave Jakelski,
  • Michael Loveless,
  • Shawn Brown,
  • Kyle Galloway,
  • Ramajan Grose,
  • Bradley Malik,
  • Chuck Mitchell,
  • Chris Fountain,
  • Mark Coleman,
  • Gary Bolton,
  • David Craig

摘要

Rio Tinto KennecottRio Tinto Kennecott smelterSmelter personnel identified issues around the dry feed (copper concentrateCopper concentrate, slagSlag concentrateConcentrate, coolant, and flux) loss-in-weight (LIW)Loss-In-Weight (LIW) screw feeder system feeding the smelterSmelter’s flash smelting furnaceFlash smelting furnace. Due to properties associated with a finely ground dried concentrateConcentrate and slagSlag concentrateConcentrate, the screw feeder system suffered from flushingFlushing, which caused excess feed to rush directly through the screw feeder into the furnaceFurnace’s concentrateConcentrate burner. Despite multiple “improvements” of the screw feeder system, flushingFlushing persisted. Personnel from the Rio Tinto KennecottRio Tinto Kennecott’s Projects, EngineeringEngineering, and Technical teams evaluated replacementReplacement options, with a RotoFeedRotoFeed®® LIW system chosen as the best choice due to its limited path for feed to flush through the system. This paper will describe the decision process, installation, and the results of changing to the new LIW feed system. This paper will also discuss the additional feed preparation that is required upstream of the system to maintain the RotoFeedRotoFeed®® integrity and limit wear. Initial results of the installation showed drastically reduced flushingFlushing, and it decreased overall maximum feed rate deviation from ± 15% to less than ± 2% of setpoint. After eight months of operationOperation, the RotoFeedRotoFeed®® system performancePerformance deteriorated and eventually a replacementReplacement RotoFeedRotoFeed®® was installed. This paper will discuss the wear found on the original RotoFeedRotoFeed®® units and potential RotoFeedRotoFeed®® designDesign improvements.