Metso's Ausmelt water-cooled lance
The Ausmelt water-cooled lance increases availability and operational consistency in the TSL furnace operations. Water cooling of the lance significantly improves lance life, resulting in reduced downtime and lower maintenance costs while also enabling higher process operating efficiency.
Boosting TSL smelting performance
Ausmelt TSL technology
  • Ausmelt top submerged lance (TSL) technology is well established across a wide range of pyrometallurgical processes
  • A key component of the technology is the Ausmelt lance used to deliver process air, oxygen and fuel to the molten bath
  • The lance is traditionally cooled by injected process gasses, promoting formation of a protective slag ‘freeze’ layer
  • Use of water cooling improves lance life under even the most demanding operating conditions, enabling increased use of oxygen and a more intense smelting process
  • Ausmelt water-cooled lance is part of our Metso Plus offering and delivers enhanced operational efficiency and improved maintainability
System inclusions
  1. Water cooled lance  
  2. Water flow control valve train skid with booster pumps and leak detection system, fully integrated to the plant control system for safe operation 
  3. Water supply and return piping, hoses and connectors 
  4. Maintenance kits 
System inclusions

Lance variants

  • Fully water cooled lances use water jacket cooling for the entire length of the lance to provide maximum protection and are well suited for processes with extreme temperatures.   
  • Partially water cooled lances use water jacket cooling on a shorter length at the high-wear area of the lance tip. This variant is well suited to retrofitting at existing smelters to replace air cooled Ausmelt lances.  
Benefits
Benefits
  • Extended lance life leading to reduced downtime and maintenance costs
  • Possibility for operation with increased oxygen enrichment, reducing process fuel requirement and offgas volumes
  • Improved lance tip integrity for consistent and accurate lance positioning, efficient combustion and hence improved process control
  • Safe operation enabled by continuous leak detection monitoring system
  • Can be retrofit at existing plants with minimal modifications and downtime
  • Easily maintained on-site

Services

Metso provides full packages for new smelters and existing plant retrofits including:

  • Basic engineering to meet the needs of the local site
  • Detailed engineering
  • Equipment supply
  • Installation and commissioning advisory services
  • Operational and maintenance training
  • Technical support – on-site and remote

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