New Vessel Lining Technique Surpasses Expectations

15/08/2017

In 2016, Nescotech and ITW Engineered Polymers started testing a new vessel lining technique to alleviate a customer’s problem with short service life of cast iron vessels. The cast iron vessels are used for handling of melted lead, so they are exposed to extreme temperature stress. The melted lead is poured directly from the furnace into the vessels three times a day, seven days a week, at a temperature of 900°C. This reduces the average cast iron vessel service life to around 30-45 days, at which point cracks appear on the vessel body and the vessel must be replaced.

To overcome the issue, Nescotech started testing with lining the vessels with Densit WearFlex 2000 HT. The WearFlex 2000 HT is a chemically bonded corundum-ceramic wear resistant lining for temperatures up to 1200°C.

  

At the end of October 2016, a test-vessel lined with Wearflex 2000 HT was put into full operation with 3 melted lead pourings every day. As this was the first full operation test, expectations were kept at a minimum. However, the results turned out to surpass all expectations.

The vessel was fully functional until the middle of April 2017, which means that the service life was more than 160 days. This is more than three times longer than a best-case scenario for an iron cast vessel and promises significant cost reductions for the client.

Further testing is now being conducted to improve the service life of the vessels even more. We are looking forward to seeing the final results for this application, as this could prove a valuable technique to reduce vessel wear in a number of industries. ITW Engineered Polymers would like to thank AS Nescotech for their help with this project.

We are driven by developing innovative wear and abrasion solutions for our customers and our new vessel lining technique will be a valued edition to our wide range of specialized applications.

To read more about our wear & abrasions products, please click here.