缓冷制度对铜渣结晶性能的影响

Effect of Slow Cooling System on Crystallization Property of Copper Slag

研究了高温铜渣缓冷制度对渣中铜相分子结晶及铜渣浮选性能的影响。结果表明,炉渣冷却速度越慢,渣中铜相分子粒度越大,越有利于铜的选别分离。随着铜渣冷却速度变慢,铜渣中矿物晶型由细小分散变得完整连续,且易浮选回收的铜相分子聚集体亦逐渐增多变大,揭示了冷却速度变慢铜浮选回收率增高的主要机理。

Effects of slow cooling system for high temperature copper slag on copper crystallization in slag phase and copper slag flotation were analyzed. The results show that the slower cooling of slag is, the bigger molecular size of copper slag becomes, which in turn facilities copper separation. With drop of cooling rate of copper slag, mineral crystals in copper slag becomes complete and continuous from fine dispersion, copper phase molecular easy to be recovered by flotation gradually aggregates to be enlarged. Mechanism of copper flotation recovery rate rising with lower cooling rate is illustrated.