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Resources, Conservation and Recycling :
Hot stage processing of…
Resources, Conservation and Recycling :
Hot stage processing of metallurgical slags
Introduction
Slags are applied for preventing metal oxidation within air contact as to control loss of heat and removal of impurities from molten metal.
Slag production majorly originates from blast furnace processes, while small portions are from steel making processes. As it is a big issue towards the environment, usually slag will undergo a secondary resource after the recycling process.
Recovery of hazardous and oxidised metals can be completed by specific methods some of them are post process additions and reduction processes or leaching processes.
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Conclusion
As for the disintegration of air-cooled slags, manipulations of borate content or silica additions or by cooling path alteration, the wasted slag later on can be converted into a valuable by-product, without interfering with the metallurgical process.
On the other hand, chromium leaching can be limited by such methods as removing chromium content from contaminated water, releasing the chromium first from the slags and placing the chromium at stable mineral phases during slag cooling.