内蒙古科技大学毕业设计说明书（毕业论文）I新疆某铁资源综合回收选矿工艺研究新疆某铁资源综合回收选矿工艺研究摘摘 要要本课题对新疆某铁矿资源进行了综合回收的选矿工艺研究；该矿主要是以赤铁矿为主，次有磁铁矿、镜铁矿、褐铁矿、菱铁矿等伴生。针对矿石中铁矿物主要是难选的氧化矿，其结晶粒度细、矿物成分比较复杂、矿物镶嵌关系复杂等特点；实现对该铁矿资源的综合回收是本课题的主要内容和难点。我们对该矿石采用破碎、磨矿、弱磁选、强磁选、重选、浮选以及化学选矿等选矿方法进行试验，对原矿进行了工艺矿物学研究以及选矿工艺研究，开展了相关工艺条件试验并进行了几个选矿方法的联合工艺流程试验。并取得了如下成果：（1）确定了该赤铁矿的品位较高，氧化程度较重，并对矿石组成和脉石矿物、结构构造、嵌布特征以及矿石的可碎、可磨性有了清楚的认识。（2）通过选矿工艺试验研究，对多种选矿方法的综合比较之后，确定出了合理的工艺流程。最终确定可采用重选-磁化焙烧-再磨-弱磁选工艺流程和重选-磁化焙烧-再磨-弱磁选-酸洗（水洗）工艺流程均比较适合用于该矿样的铁矿物的回收。能够得到品位60%的铁精矿产品。此次研究实现了该铁矿的综合回收，最终产品符合要求，为选别该矿提供了可行、合理的工艺流程和工艺条件，有了较为科学的参考依据。关键词：关键词：氧化铁矿、磁化焙烧、酸洗、综合回收内蒙古科技大学毕业设计说明书（毕业论文）IIComprehensive Recovery Iron minerals Process from a Certain of Xinjiang Ore ABSTRACTThe subject of iron ore resources in Xinjiang a comprehensive collection of Mineral Technology; mine, mainly hematite, minor are magnetite, Specularite, limonite, siderite associated. For ore minerals of iron oxide ore is refractory, its fine grain size, mineral composition is rather complicated, and complicated relations between the characteristics of mineral inlay; achieve comprehensive recovery of the iron ore resources are the main contents of this issue and difficult. Through the use of the ore crushing, grinding, low intensity magnetic separation, high intensity magnetic separation, gravity separation, flotation and chemical beneficiation beneficiation methods such as tests carried out on Process Mineralogy of ore and beneficiation process of carrying out the relevant conditions trial and conducted a joint process of several beneficiation test. And obtained the following results: (1).Determine the high grade hematite, oxidized heavy, and have a clear understanding ofhe ore composition and gangue mineral composition, texture and structure, embedded fabrict characteristics crushability grindability (2).Mineral Processing by experimental research on a variety of beneficiation comprehensive comparisons, identify the reasonable process. And finally finalize the gravity separation - magnetic roasting - and then grinding - low intensity magnetic separation process and the gravity separation - magnetic roasting - and then grinding - Magnetic Separation - Pickling (washing) process are more suitable for the kind of iron ore mine material recovery. Can be get 60% grade iron ore products. The research acheved the comprehensive recovery of the iron, the final product meet the requirements. for sorting the mine provides a feasible and reasonable process, with a more scientific basis.Keywords: Iron oxide；Magnetic roasting；Pickling (Washing) ；Comprehensive collection内蒙古科技大学毕业设计说明书（毕业论文）III目目 录录第一章第一章 绪论绪论.1 1.1 课题研究背景.1 1.2 课题研究的国内外现状.3 1.2.1 工艺方面.5 1.2.2 选矿药剂方面.7 1.2.3 设备方面.7 1.3 课题研究的内容及技术思路.9 1.4 课题研究的目的和意义.9 第二章第二章 工艺矿物学研究工艺矿物学研究.11 2.1 前言.11 2.2 矿样的采取和加工.112.2.1 采样.112.2.2 样品加工.11 2.3 工艺矿物学研究.112.3.1 矿石性质.112.3.2 矿石结构构造及嵌布特征.12 第三章第三章 选矿工艺试验研究选矿工艺试验研究.14 3.1 磨矿试验. .14 3.1.1 磨矿细度. .14 3.1.2 铁矿物单体解离度. .15 3.1.3 磨矿细度与弱磁选试验. .16 3.2 筛分试验. .17 3.3 磁选试验. .213.3.1 不同场强的磁选试验. .213.3.2 强磁选试验. .223.3.3 弱磁-强磁流程试验. .23 3.4 浮选试验. .253.4.1 浮选介质 pH 试验. .263.4.2 调整剂硫酸试验. .273.4.3 调整剂氟硅酸铵试验.内蒙古科技大学毕业设计说明书（毕业论文）IV.283.4.4 抑制剂水玻璃试验. .293.4.5 捕收剂 PHC 试验. .313.4.6 浮选时间试验. .323.4.7 矿浆温度试验. .333.4.8 矿浆浓度试验. .343.4.9 浮选工艺流程试验. .35 3.5 重选试验. .373.5.1 不同磨矿细度重选试验. .373.5.2 重选中矿再重选试验. .38 3.6 化学选矿试验. .393.6.1 焙烧-弱磁