中文摘要：

研究含锡锌复杂铁精矿的矿物学特性,并开发含锡锌铁精矿球团预氧化-弱还原焙烧新技术。研究结果表明：铁精矿中的主要载铁矿物为磁铁矿,主要含锡矿物为锡石,主要含锌矿物包括闪锌矿和铁闪锌矿,其中闪锌矿占绝大部分;以单体锡石形式存在的锡占54.78%,而磁铁矿颗粒中的锡占41.31%;磁铁矿中的锡绝大部分为锡石的微细粒包体;88.95%的锌存在于硫化矿中,闪锌矿多以单体粒状或以不规则状与磁铁矿及其他矿物构成连生体;在w（C）/w（Fe）为0.2,焙烧温度为1 075℃,时间为50 min时,球团矿抗压强度为2 380 N/个,Sn和Zn的挥发率分别为71.86%和56.28%,残余Sn和Zn含量均小于0.08%。

英文摘要：

The mineralogy of the tin,zinc-containing iron concentrates was researched and a novel utilization technology of pellet pre-oxidation-weak reduction roasting was developed.The results show that,the major iron-carrying mineral is magnetite,the primary tin-bearing mineral is cassiterite,and the zinc-containing minerals are a large quantity of sphalerite and a few of marmatite.54.78% Sn exists as cassiterite monomers,and 41.31% Sn is embedded in magnetite,existing as the form of tiny granule inclusion of cassiterite,which is proved by the results of Electron Probe.88.95% Zn exists as sulfide minerals,in addition,granular and irregular sphalerite particles are enwrapped in the magnetite and other minerals.2 380 N/P of pellet compression strength,71.86% of Sn volatilization,and 56.28% of Zn volatilization can be obtained under the conditions of roasting temperature 1 075 ℃,roasting time 50 min and w（C）/w（Fe） 0.2.The residual Sn and Zn contents in the roasted pellets are both less than 0.08%.