![]() Below are steps required for recycling slag as established by two standards setting organizations. To realize all of the advantages of recycling, it is essential that the process is performed properly and according to the standards established by industry. An average for this loss is 25% of the total weight processed. Also, there is magnetic separation during processing in which magnetic impurities are removed and disposed of as waste. It should be noted, though, that in most recycling processes there is some loss in weight, and not all the slag is processed into reusable flux. Environmentally, recycling slag minimizes the use of nonrenewable resources such as minerals, and it reduces the mass of material that must be sent to a landfill. Savings can also be realized by eliminating the need to collect the slag and have it removed to an approved landfill. Many times this can amount to savings of 50% or greater. The cost of processing recycled slag is less than the purchase of new flux from the manufacturer. Two major reasons why a welding manufacturer would consider the use of recycled submerged arc welding slag are cost savings and the environment. This slag recycling process has been around the welding industry for many years, and trial-and-error experimentation through the years has made it a reliable and accepted process. Submerged arc welding (SAW) slag is recycled by taking the fused part of the slag after welding and processing it in a manner that allows it to be reused for the same SAW operation. Recycling fused slag from the SAW process is economical and environmentally friendly. If processed properly and according to code requirements, recycled slag can be a reliable and feasible alternative to buying new flux. More information about submerged arc slag crushing is in the below news article that was published in the American Welding Society Welding Journal.Īrticle originally featured in the American Welding Society Welding Journal ![]()
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