India, June 25 -- SKF AB (SKUFF), a Swedish bearing and seal manufacturer, on Thursday announced an investment in green-tech startup Anferra AB, alongside Stephen Industries and Chalmers Ventures, to tackle hazardous steel grinding sludge. Grinding sludge, a waste material generated during metal grinding operations, is one of the steel industry's most difficult recycling challenges. Around 12 million tonnes are produced globally each year, with much of it ending up in landfills or incinerators due to its hazardous nature and inconsistent composition.
Anferra has developed a process that converts steel grinding sludge into ferric chloride, a chemical widely used in water and wastewater treatment. The process also produces hydrogen gas, whic...