Mineralogical features and comprehensive utilization technology of tin,zinc-bearing iron concentrates
Mineralogical features and comprehensive utilization technology of tin,zinc-bearing iron concentrates
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发表时间：
2011
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通讯作者：
Huang Zhucheng
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作者：
Huang Zhucheng
对含锡锌铁精矿进行了矿物学研究，开发了球团预氧化-弱还原焙烧利用新工艺。结果表明，含铁矿物主要为磁铁矿，主要含锡矿物为锡石，含锌矿物主要为闪锌矿和少量铁闪锌矿。锡54.78%以锡石单体形式存在，41.31%以锡石细小颗粒包裹体形式存在于磁铁矿中。电子探针分析结果表明，锌以硫化物矿物形式存在。此外，锌以锡石单体形式存在在焙烧温度1075℃、焙烧时间50min、w(C)/w(Fe)0.2的条件下，球团矿的抗压强度为380N/P，锡挥发率为71.86%，锌挥发率为56.28%。焙烧后球团矿中锡、锌残留量均小于0.08%。
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%.