【正文】 重慶大學(xué)本科學(xué)生畢業(yè)設(shè)計(jì)（論文） 錳礦浸出中固液界面特性和復(fù)鹽控制方法研究 重慶大學(xué)化學(xué)化工學(xué)院 二 O 一六 年六月 Graduation Design(Thesis) of Chongqing University The Study of Characteristics of solid liquid interface in leaching of manganese ore and the controlling method of double salt Undergraduate: Peng Xiaoli Supervisor: Prof. Liu Renlong Major: Chemical Engineering School of Chemistry and Chemical Engineering Chongqing University June 2021 摘 要 近 年來，社會(huì)對金屬錳的需求量越來越大，導(dǎo)致生產(chǎn)電解錳的錳礦品位持續(xù)降低。使用低品位的錳礦進(jìn)行工業(yè) 生產(chǎn)，會(huì)造成錳資源利用率低、錳渣含水率高、錳渣資源化利用困難等一系列問題。本論文擬系統(tǒng) 研究錳礦浸出中固液界面水化重慶大學(xué)本科學(xué)生畢業(yè)設(shè)計(jì)（論文） 摘 要 Ⅰ 學(xué)特性及復(fù)鹽控制方法，重點(diǎn)研究錳礦在浸出過程中錳礦與表面活性劑界面水分子的作用規(guī)律，分析錳礦在浸出時(shí)礦物表面吸水性能 ， 探究表面活性劑強(qiáng)化錳礦浸出機(jī)理 ， 研究表面活性劑對錳渣中復(fù)鹽結(jié)晶水的形成與破壞規(guī)律 ，探索出 從 根本上提高錳礦中錳的浸出率 、 降低錳渣含水率 的方法 ，達(dá)到錳資源優(yōu)化利用的目的，減少含水率 錳渣 所帶來的安全隱患 。 實(shí)驗(yàn) 研究表明 ，十六烷基三甲基溴化銨對錳礦浸出影響不大，這是由于 它 是陽離子性表面活性 劑；十二烷基苯磺酸鈉能 明顯 降低錳渣的含水率，當(dāng)十二烷基苯磺酸鈉的濃度為 ，含水率能降至 %（本實(shí)驗(yàn)所有的含水率均為重量百分?jǐn)?shù)），同時(shí)也能降低錳礦浸出液的表面張力，其作用后的錳礦浸出液的表面張力平均值為 Nm1；聚二甲基硅氧烷能提高錳礦中錳的浸出率，當(dāng)聚二甲基硅氧烷的濃度也為 ，其作用的錳礦浸出率為 %，但是其對錳渣的含水率以及錳礦浸出液的表面張力沒有明顯 作用 ；十二烷基苯磺酸鈉與聚二甲基硅氧烷一起使用時(shí)存在協(xié)同作用，對錳礦浸出率和錳渣含水率作用效果顯著 ，當(dāng)兩 者濃度均為 ，錳礦浸出率高達(dá) %，錳渣含水率和錳礦浸出液的表面張力與只加十二烷基苯磺酸鈉時(shí)的幾乎相同 。 關(guān)鍵詞 ： 錳礦浸出率，錳渣含水率，表面張力，表面活性劑 ABSTRACT In recent years, the demand for metal manganese is increasing, which leads to the continuous reduction of the grade of manganese ore in the production of electrolytic manganese. Low grade manganese ore is used for industrial production, 重慶大學(xué)本科學(xué)生畢業(yè)設(shè)計(jì)（論文） ABSTRACT III which causes a series of problems, such as low utilization ratio of manganese resources, high water content of manganese slag, and difficult utilization of manganese slag. This paper intends to study the leaching characteristics of water chemistry in the solidliquid interface and salt control method, facous on the law of the interaction between manganese ore and surfactant in the leaching process, analyses the surface water absorption properties of minerals in the leaching of manganese ore, study on the leaching mechanism of manganese ore by surfactant and the effect of surfactants on the formation of crystal water salt in manganese slag and failure law, find out the method of improving the leaching rate of manganese in manganese ore and reducing the water content of manganese slag , to achieve the purpose of optimizing the utilization of manganese resources and reducing the water content of manganese slag brought about by the security risks. The experimental results show that the sixteen alkyl three methyl bromide has little effect on the leaching of manganese ore, which is a cationic surfactant. Sodium dodecyl benzene sulfonate (SDBS) can significantly reduce the water content of the manganese slag, when concentration of SDBS is g / L, moisture falls to % (in this experiment, all the water rate is weight percentage). At the same time, it can also reduce the surface tension of the leaching solution of manganese ore, the average value of the surface tension of the leaching solution after the action of manganese ore is N m1. Polydimethylsiloxane can improve the leaching rate of manganese in manganese ore, when concentration of polydimethylsiloxane is g / L, the role of manganese leaching rate is %, but the water rate of manganese slag and manganese ore leaching liquid surface tension without obvious effect. When SDBS and polydimethylsiloxane used together ,there is a synergistic effect on the ma nganese leaching rate and manganese slag water rate , when both concentrations are g / L, manganese ore leaching rate up to %.And the water content of manganese slag and the surface tension of the leaching solution of manganese ore are same as which add the SDBS. Keywords: Leaching rate of manganese ore, Water content of manganese slag, Surface tension of leaching solution of manganese ore, surface active age. 重慶大學(xué)本科學(xué)生畢業(yè)設(shè)計(jì)（論文） 目 錄 IV 目 錄 摘 要 ................................................................................................................... Ⅰ ABSTRACT .............................................................................................................. II 1 緒論 ....................................................................................................................... 1 電解金屬錳研究背景 ......................................................................................... 1 電解金屬 錳研究現(xiàn)狀 ......................................................................................... 2 國內(nèi)外電解金屬錳工藝研究現(xiàn)狀 .............................................................. 2 電解錳渣含水礦物研究 ............................................................................ 4 電 解錳渣處理與資源化利 用 ..................................................................... 4 課題研究意義與目的 ......................................................................................... 5 課題研究內(nèi)容 .................................................................................................... 5 2 實(shí)驗(yàn)原理、材料與方法 .................................................................................. 7 實(shí)驗(yàn)原理 ........................................................................................................... 7 酸浸法原理 .............................................................................................. 7 表面活性劑提高錳礦浸出率原理 .............................................................. 7 表面活性劑降低錳渣含水率原理 .............................................................. 8 實(shí)驗(yàn)材料 ........................................................................................................... 9 材料 ........................................................................................................ 9