高压辊磨对磁铁矿石磁选特性的影响 |
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引用本文: | 侯英,徐亦元,谢冬冬,王冬,曾海,杨春,杨洪英,吴中贤. 高压辊磨对磁铁矿石磁选特性的影响[J]. 辽宁科技大学学报, 2017, 40(6): 462-467. DOI: 10.13988/j.ustl.2017.06.011 |
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作者姓名: | 侯英 徐亦元 谢冬冬 王冬 曾海 杨春 杨洪英 吴中贤 |
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作者单位: | 中钢集团安徽天源科技股份有限公司,安徽 马鞍山243004;辽宁科技大学 矿业工程学院,辽宁 鞍山114051;东北大学 冶金学院,辽宁 沈阳110819;中钢集团安徽天源科技股份有限公司,安徽 马鞍山,243004;辽宁科技大学 矿业工程学院,辽宁 鞍山,114051;鞍钢集团弓长岭矿业公司,辽宁 辽阳,111008;东北大学 冶金学院,辽宁 沈阳,110819 |
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基金项目: | 辽宁省教育厅项目,鞍山市科技计划项目,辽宁科技大学青年基金项目 |
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摘 要: | 对弓长岭磁铁矿石的高压辊磨和颚式破碎产品分别进行阶段磨矿—阶段磁选—细筛再磨试验,分析了两种破碎方式对弓长岭磁铁矿石磨矿特性和磁选特性的影响。结果表明:高压辊磨工艺适宜的一段磨矿细度为-74μm含量占40%,颚式破碎工艺适宜的一段磨矿细度为-74μm含量占50%,两种破碎工艺适宜的二段磨矿细度均为-74μm含量占85%,最佳的细筛筛孔尺寸为50μm,三段磨矿细度为-45μm含量占80%。高压辊磨机碎磨分选工艺与颚式破碎机碎磨分选工艺相比,精矿品位相近,产率高0.52%,回收率高0.92%。
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关 键 词: | 高压辊磨 颚式破碎 磁铁矿石 磨矿细度 磁选 |
Influence of high pressure grinding rolls on magnetic separation characteristics of magnetite ore |
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Abstract: | Products of magnetite ore from Gongchangling crushed by high pressure grinding rolls(HPGR)and jaw crusher(JC),were carried out by three stages:grinding-separation-regrinding.The grinding characteristics and magnetic characteristics of magnetite ore from Gongchangling were analyzed.The results showed that the suitable primary grinding fineness of HPGR process is-0.074 mm content 40%,and the suitable primary grinding fineness of JC process is-0.074 mm content 50%,and the suitable second grinding fineness of HP-GR and JC process is-0.074 mm content 85%,the best size of fine sieve was 0.050 mm,the suitable third stage grinding process of HPGR and JC process is-0.045 mm content 85%.The comprehensive concentrate grade of HPGR process was similar to JC process,the yield was 0.52% higher than JC process,and the recov-ery rate was 0.92% higher than JC process. |
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Keywords: | high pressure grinding rolls jaw crusher magnetite ore grinding fineness magnetic separation |
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