|本期目录/Table of Contents|

[1]张汉泉,汪凤玲,李浩.鲕状赤铁矿磁化焙烧—磁选—反浮选降磷试验[J].武汉工程大学学报,2011,(03):29-32.[doi:10.3969/j.issn.16742869.2011.03.008]
　ZHANG Han quan,WANG Feng ling,LI Hao.Study on magnetic roastingmagnetic separationinverseflotation for phosphorus reduction of oolitic hematite[J].Journal of Wuhan Institute of Technology,2011,(03):29-32.[doi:10.3969/j.issn.16742869.2011.03.008]
点击复制

鲕状赤铁矿磁化焙烧—磁选—反浮选降磷试验(/HTML)
分享到：

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年03期
页码:
29-32
栏目:
化学与化学工程
出版日期:
2011-03-31

文章信息/Info

Title:
Study on magnetic roastingmagnetic separationinverse
flotation for phosphorus reduction of oolitic hematite
文章编号:
16742869(2011)03002904
作者:
张汉泉; 汪凤玲; 李浩
武汉工程大学环境与城市建设学院,湖北 武汉 430074
Author(s):
ZHANG Hanquan1;  WANG Fengling;  LI Hao
School of Environmental and Civil Engineering, Wuhan Institute of Technology, Wuhan 430074,China
关键词:
鲕状赤铁矿; 提铁降磷; 磁化焙烧; 反浮选
Keywords:
oolitic hematite;  raises iron to reduce phosphorus;  magnetizing roasting;  inverse flotation
分类号:
TF551
DOI:
10.3969/j.issn.16742869.2011.03.008
文献标志码:
A
摘要:
鄂西宁乡式鲕状赤铁矿嵌布粒度极细,SiO2、Al2O3、P等杂质含量高,用其生产的铁精矿很难达到冶炼要求.针对铁品位为43.76%,磷含量为0.84%的鄂西鲕状赤铁矿进行提铁降磷试验研究,通过对磁化焙烧温度、磁化焙烧时间、还原煤的配比等影响因素的条件试验,确定在焙烧时间60 min,焙烧温度750 ℃,还原煤11%（质量比）的最佳焙烧条件.焙烧产品磨矿至-0.038 mm占80.54%、用永磁选机进行弱磁选,获得了铁品位54.10%、铁回收率93.19%、磷含量0.80%的粗铁精矿.进行反浮选药剂制度试验,得到了铁品位58.95%、铁综合回收率80%、磷含量0.50%的铁精矿,其最佳浮选药剂制度为NaOH 750 g/t,淀粉800 g/t,石灰500 g/t,RA715 750 g/t,G310 107.73 g/t,浮选温度30 ℃.在此浮选制度下,进行一粗一精试验,精选石灰和捕收剂用量减半,可得铁品位59.87%,磷含量降至0.28%,综合回收率71.08%,综合试验结果表明,本文探索的工艺流程具有很大的可行性,能够为鲕状赤铁矿的选矿利用提供参考.
Abstract:
The oolitic hematite in the west of Hubei,because of its fine embedded fabric size, and high impurity of silicon dioxide, aluminum oxide, phosphorus etc, it is hard to be used in ironmaking. Researches of raising iron grade to reduce phosphorus of oolitic hematite with iron grade of sample 43.76% and content of phosphorus 0.84% were finished in this paper. Studies on factors influencing magnetic roasting on oolitic hematite such as temperature、time of magnetization roasting and ratio of reducing agent were done, the optimum conditions are identified: the hematite are roasted with 11% reducing coal in the temperature of 750 ℃ for 60 minutes. The roasted product is separated by permanent magnetic separator after grinding to 80.54% -0.038 mm. The grade of iron and phosphorus in rough concentrate is 54.10% and 0.80% respectively, iron recovery of 93.19%. After experiment of inverse floatation on concentrate,the grade of iron and phosphorus in rough concentrate is 58.95% and 0.50% respectively with the total Fe recovery 80% based on the optimum conditions: sodium hydroxide dosage of 750 g/t,modified starch dosage of 800 g/t,lime dosage of 500g/t,RA715 dosage of 750 g/t,G310 dosage of 107.73 g/t,the temperature of flotation pulp is 30 ℃. Then,a cleaning concentration was tested,half of the dosage of lime and collector are added,finally the grade of iron concentrate is 59.87%,the grade of phosphorus is 0.28%, total iron recovery is 71.08%. In consequence of the above results,the technology is feasible and can provide us with effective suggestions in dealing with oolitic hematite.

参考文献/References:

［1］印万忠,袁致涛.我国难选铁矿石资源利用的现状及发展方向［J］.金属矿山,2007（1）:16.
［2］朱继存.宁乡式铁矿床成因的新认识［J］.合肥工业大学学报,2001,24（1）:2368.
［3］胡宁,徐安武.鄂西宁乡式铁矿分布层位岩相特征与成因探讨［J］.地质找矿论丛,2006,40（3）:2330.
［4］文勤.鲕状赤铁矿提铁降磷工艺研究［D］.武汉理工大学资源与环境工程学院,2006.
［5］孙炳泉.近年我国复杂难选铁矿石选矿技术进展［J］.金属矿山,2006（3）:16.
［6］饶鹏.宜昌高磷赤铁矿反浮选提铁降磷工艺与机理研究［D］.武汉理工大学资源与环境工程学院,2008.
［7］赵志强,戴惠新.铁精矿提质降杂现状及工艺探讨［J］.云南冶金,2003,15（3）:3539.
［8］张汉泉,任亚峰,管俊芳.难选赤褐铁矿焙烧磁选试验研究［J］.中国矿业,2006,15(5):4448.
［9］罗惠华,王俊.海州式磷矿低温浮选的研究［J］.中国矿业,2006,15（10）:2529.
［10］林祥辉.采用磨矿磁选重选反浮选工艺进行安钢舞矿难选贫红铁矿工业调试获得成功［J］.矿冶工程,1993,13（3）:3135.
［11］Iranildes Daniel dos Santos, Jose′ Farias Oliveira.Utilization of humic acid as a depressant for hematite in the reverse flotation for iron ore［J］.Minerals Engineering,2007,20:10031007.

相似文献/References:

[1]张汉泉,付金涛,路漫漫,等.冷却方式对焙烧鲕状赤铁矿磨矿性能影响[J].武汉工程大学学报,2014,(11):12.[doi:103969/jissn167428692014011003]
　ZHANG Han quan,FU Jin tao,LU Man man,et al.Influence of cooling mode on grindability of roasting oolitic hematite[J].Journal of Wuhan Institute of Technology,2014,(03):12.[doi:103969/jissn167428692014011003]

备注/Memo

备注/Memo:
收稿日期:20100901作者简介:张汉泉(1971),男,湖北浠水人,博士,副教授.研究方向:黑色金属选矿及造块理论与工艺.
更新日期/Last Update: