【正文】
I 白云鄂博磁鐵礦磨礦粒度與可選性關(guān)系研究 內(nèi)容摘要 摘要: 文章介紹了白云鄂博地理位置、礦種、白云鄂博磁鐵礦的工藝礦物學(xué)特征及白云鄂博磁鐵礦應(yīng)用的選礦工藝流程。分析了白云鄂博磁鐵礦磨礦粒度與可選性的關(guān)系以及磨礦粒度對(duì)弱磁選的影響。實(shí)驗(yàn)采用白云鄂博磁鐵礦以時(shí)間為單位磨礦并進(jìn)行磁選管實(shí)驗(yàn),統(tǒng)計(jì)數(shù)據(jù)得出最佳磨礦粒度并對(duì)今后的白云鄂博磁鐵礦磨選作業(yè)提出合理建議。 關(guān)鍵詞: 白云鄂博磁鐵礦;磨礦粒度;可選性關(guān)系 II Bayan Obo grinding magite relationship between particle size and optional Abstract Abstract: This paper introduces the Bayan Obo location, minerals, Bayan Obo mineralogy of magite in the process characteristics and the application of Bayan Obo magite beneficiation process. Analysis o f the Bayan Obo magite grain size and optional grinding and grinding the relationship between the size of the weak magic separation. Experiments using time as the unit of Bayan Obo magite ore grinding and carry out magic tube experiments, statistical data and optimum size of grinding mill for future elections Bayan Obo magite operation practical suggestions. Key words: Bayan Obo magite。 grinding grain。 optional relationship III 目錄 內(nèi)容摘要 .............................................................................................................. I Abstract ............................................................................................................... II 目錄 ................................................................................................................... III 前言 .....................................................................................................................1 第一章 概述 .........................................................................................................2 白云鄂博礦區(qū)介紹 .....................................................................................2 白云鄂博礦礦種簡(jiǎn)介 ................................................................................5 磁鐵礦簡(jiǎn)介 ...............................................................................................7 白云鄂博磁鐵礦的標(biāo)型特征 .................................................................... 10 白云鄂博磁鐵礦的產(chǎn)狀及分布 ........................................................ 10 磁鐵礦的結(jié)構(gòu)構(gòu)造特點(diǎn) .................................................................. 10 第二章 白云鄂博磁鐵礦礦石性質(zhì) ......................................................................... 12 試驗(yàn)樣品的采集與加工 ........................................................................... 12 白云鄂博磁鐵礦礦石結(jié)構(gòu)構(gòu)造及鐵礦物嵌布特征 ...................................... 12 原礦物質(zhì)組成特征 ................................................................................... 13 化學(xué)組成 ...................................................................................... 13 礦物組成 ...................................................................................... 14 第三章 包鋼白云鄂博磁鐵礦礦石選別工藝 ........................................................... 15 包鋼白云鄂博磁鐵礦選別工藝歷史進(jìn)展 ................................................... 15 包鋼選礦廠磁礦系列現(xiàn)磨礦產(chǎn)品工藝性質(zhì) ................................................ 19 白云 鄂博磁鐵礦在不同磨礦粒度下的工藝性質(zhì) .......................................... 21 第四章 不同磨礦粒度下的磁選管選別試驗(yàn) ........................................................... 24 礦石可磨性測(cè)定 ...................................................................................... 24 不同粒度下的磁選管試驗(yàn)指標(biāo) ................................................................. 25 第五章 礦石粒度對(duì)弱磁選的影響 ......................................................................... 27 磁選過(guò)程分析 ......................................................................................... 28 粒度對(duì)弱磁選的影響 ............................................................................... 29 粗粒級(jí)的形響 ................................................................................ 29 IV 細(xì)粒級(jí)的影響 ............................................................................... 29 寬級(jí)別入選情況 ............................................................................. 31 粒度對(duì)弱磁選的影響的結(jié)論 .................................................................... 32 第六章 結(jié)束語(yǔ) .................................................................................................... 32 參考文獻(xiàn): ......................................................................................................... 34 致謝 ......................................................................................... 錯(cuò)誤 !未定義書(shū)簽。 1 前言 磨礦是選礦工藝流程中的一個(gè)重要環(huán)節(jié),是實(shí)現(xiàn)礦石中有用礦物與脈石礦物單體解離,實(shí)現(xiàn)有用礦物與礦物與脈石礦物有效分離,達(dá)到回收有用礦物的重要手段和前提條件。磨礦作業(yè)在選礦流程中起著非常重要的作用。磨礦粒度也稱(chēng)磨礦細(xì)度,指的是磨礦產(chǎn)物中小于某特定粒度粒級(jí)的產(chǎn)率 。磨礦粒度直接影響著精礦產(chǎn)品的質(zhì)量(精礦品位,雜質(zhì)含量)、目的礦物的回收率以及選礦廠的經(jīng)濟(jì)效益。磨礦如果出現(xiàn)“欠磨”,則不能使目的礦物達(dá)到充分的