矿产保护与利用
礦產保護與利用
광산보호여이용
CONSERVATION AND UTILIZATION OF MINERAL RESOURCES
2014年
5期
26-29
,共4页
赤铁矿%磁铁矿%磁选%反浮选
赤鐵礦%磁鐵礦%磁選%反浮選
적철광%자철광%자선%반부선
hematite%magnetite%magnetic separation%reverse flotation
湖南省某江口式铁矿含TFe 29．63％，铁主要是以赤铁矿和硅酸铁为主，还有少量磁铁矿和褐铁矿，具有高硅、贫铁、低硫、低磷的特点。为回收矿石中的铁，进行了弱磁、强磁、反浮选等工艺试验研究。最终确定采用“弱磁选回收磁铁矿—强磁选和反浮选回收赤铁矿”联合工艺流程，可获得TFe 58．07％、铁回收率65．95％的铁精矿。该工艺为类似铁矿的开发提供借鉴。
湖南省某江口式鐵礦含TFe 29．63％，鐵主要是以赤鐵礦和硅痠鐵為主，還有少量磁鐵礦和褐鐵礦，具有高硅、貧鐵、低硫、低燐的特點。為迴收礦石中的鐵，進行瞭弱磁、彊磁、反浮選等工藝試驗研究。最終確定採用“弱磁選迴收磁鐵礦—彊磁選和反浮選迴收赤鐵礦”聯閤工藝流程，可穫得TFe 58．07％、鐵迴收率65．95％的鐵精礦。該工藝為類似鐵礦的開髮提供藉鑒。
호남성모강구식철광함TFe 29．63％，철주요시이적철광화규산철위주，환유소량자철광화갈철광，구유고규、빈철、저류、저린적특점。위회수광석중적철，진행료약자、강자、반부선등공예시험연구。최종학정채용“약자선회수자철광—강자선화반부선회수적철광”연합공예류정，가획득TFe 58．07％、철회수솔65．95％적철정광。해공예위유사철광적개발제공차감。
The TFe content of a Jiangkou type iron ore in Hunan province is 29 .63%, of that mainly in hematite and silicate , as well as small amount of magnetite and limonite .High silicon, poor iron, low sulfur and phosphorus are main features of the ore .For recovery of iron minerals , experimental studies with methods of magnetic separation , high intensity magnetic separation and reverse flotation were carried out .Eventually , low intensity magnetic separation was conducted first to separate magnetite , then high intensity magnetic separation combined with reverse flotation were carried out to recycle hematite , and an iron concentrate containing TFe 58 .07% with a recovery rate of 65 .95%was obtained .
