摘要
新疆某铁矿选厂采用弱磁选—强磁选—重选工艺处理低品位混合型铁矿石,虽然铁精矿品位可达65%,但回收率仅50%左右。为此采用干式预选—弱磁选—强磁选—反浮选工艺对该矿石进行了旨在提高回收率的选矿试验。试验结果表明,干式预选可先抛弃占原矿约20%的废石,最终精矿铁品位为65.25%,回收率达69.28%,比现场生产指标提高了约19个百分点。
The process of low intensity magnetic separation-high intensity magnetic separation-gravity separation was adopted to treat the low-grade mixing iron ore of Xinjiang Provicne,by which the iron concentrate grade reached 65%,but the recovery was only about 50%.Therefore,in order to improve the recovery,the beneficiation tests were carried out by the process of dry pre-concentration,low intensity magnetic separation-high intensity magnetic separation-reverse flotation.The test results showed that about 20% of the waste rocks were removed by the dry pre-concentration firstly.Then,the final concentrate graded at 65.25% with the recovery rate of 69.28%,which is higher by about 19% than that of on-site production.
出处
《金属矿山》
CAS
北大核心
2011年第10期96-98,共3页
Metal Mine
关键词
低品位混合型铁矿石
干式预选
磁选
反浮选
Low-grade mixing iron ore
Dry concentration
Magnetic separation
Reverse flotation
