Aluminum Melt Purification Process

With the development of technology and industry, The request for quality of aluminum plank and foil is becoming higher and higher . Quality of ingot decides the quality of final production .Contrapose the condition of aluminum cast-rolling produce in Guan-aluminum company, the text research purify technics in the working procedure of smelting stove > fixed stove and on line process. Establish a set of complex purify technology having evidence effect:1, Adopting of purification technics through reducing temperature of aluminum liquid in smelting stove can make aluminum liquid having low purging degree get first purification, through change composition of covering and purging fusion, we can get even better effect, covering fusion should consider covering, purging and separating function at the same time, for purging fusion emphasis should be put to purging function, the adpoting of purging cleaner make hydrogen content reduce to 0.32ml/100g from 0.48ml/100g, rate of losing hydrogen is 37.8%.2,Adopting of CCl₄ in the fixed stove can get good effect, but it have pollution to environment and equipment, after the adopting of N₄+CCl₄, we get benefit in both purification efficient and environment protection. Hydrogen index reduce to 0.18ml/100g, rate of losing hydrogen is 35.7%.3, The equipment of on—line purification use rotating spurter make losing hydrogen bubble enter aluminum liquid . The author point out that oxygen and water content in losing hydrogen have great effect on purification rate. Filtering part can lose hydrogen and interlace effective by using foam ceramics, through this equipment , hydrogen content reduce to 0.10ml/100g, rate of losing hydrogen is 44.4%.