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高硫鋁土礦中硫的賦存狀態(tài)及除硫
摘要：采用X射線衍射分析和化學(xué)物相定量法研究高硫鋁土礦中硫的賦存狀態(tài),并對不同形態(tài)的硫的脫除方法進(jìn)行研究.結(jié)果表明:高硫鋁土礦中硫的存在形態(tài)有的以硫化物為主（主要是黃鐵礦）,有的以硫酸鹽為主,不同產(chǎn)地的鋁土礦中硫的主要存在形態(tài)是不同的,進(jìn)一步補(bǔ)充了鋁土礦中硫的物相存在的規(guī)律性.采用X射線衍射結(jié)合化學(xué)物相定量法能更準(zhǔn)確確定高硫鋁土礦中硫的存在形態(tài).確定高硫鋁土礦中硫的主要存在形態(tài)對除硫方法的選擇具有理論指導(dǎo)意義.不同形態(tài)的硫可以采用不同的除硫方法.采用氧化焙燒能有效脫除高硫鋁土礦中硫化物型硫,原礦溶出液中S2-的含量均在1.7 g/L以上,而焙燒礦的溶出液中S2-的含量均在0.18 g/L以下.通過N2CO3溶液洗滌可以有效脫除礦石中硫酸鹽型硫,原礦中全硫含量下降到0.2％以下,符合生產(chǎn)中對礦石中硫含量的要求.Abstract：The sulfur phase in high sulfur-containing bauxite was studied by an X-ray diffraction analysis and a chemistry quantitative analysis.The methods for the removal of different shaped sulfur were also discussed.The results show that sulfur phases in high sulfur-containing bauxites exist in the main form of sulfide sulfur (pyrite) or sulfate sulfur,and the main sulfur forms of bauxites from different regions are not the same.Through a combination of an X-ray diffraction analysis and a chemistry quantitative analysis,the sulfur phases of high sulfur-containing bauxite could be accurately investigated.Deciding the main sulfur form of high sulfur-containing bauxite could provide theoretical instruction for choosing methods for the removal of sulfur from bauxite,and an oxidizing-roasting process is an effective way to remove sulfide sulfur from high sulfur-containing bauxite,the content of S2- in crude ore in the digestion liquor is above 1.7 g/L,but in the roasted ore digestion liquor,it is below 0.18 g/L.Using the sodium carbonate solution washing technology to wash bauxite can effectively remove sulfate sulfur,the content of the total sulfur in ore is lowered to below 0.2％ and can meet the production requirements for the sulfur content. 作者： 胡小蓮[1]陳文汨[2]謝巧玲[2] Author： HU Xiao-lian[1] CHEN Wen-mi[2] XIE Qiao-ling[2] 作者單位： 中南大學(xué)冶金科學(xué)與工程學(xué)院,長沙410083;湖南科技大學(xué)化學(xué)化工學(xué)院,湘潭411201中南大學(xué)冶金科學(xué)與工程學(xué)院,長沙,410083 期 刊： 中國有色金屬學(xué)報(bào)（英文版） ISTICEISCI Journal： Transactions of Nonferrous Metals Society of China 年，卷(期)： 2011, (7) 分類號： P575.5 關(guān)鍵詞： 高硫鋁土礦 硫化物相 氧化焙燒 碳酸鈉洗滌 Keywords： high sulfur-containing bauxite sulfur phase oxidizing-roasting sodium carbonate solution washing technology 機(jī)標(biāo)分類號： TD9 TD8 機(jī)標(biāo)關(guān)鍵詞： 高硫鋁土礦 賦存狀態(tài) 除硫 high quantitative analysis 存在形態(tài) methods for different 相定量法 射線衍射 硫含量下降 sodium carbonate form of 物相 脫除 溶出液 硫酸鹽 硫化物 化學(xué)物 方法 基金項(xiàng)目： theNationalNaturalScienceFoundationofChina，ScientificResearchFundofHunanProvincialEducationDepartment,China【高硫鋁土礦中硫的賦存狀態(tài)及除硫】相關(guān)文章：
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