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高硫鋁土礦中硫的賦存狀態(tài)及除硫

時(shí)間:2023-05-06 17:12:27 天文地理論文 我要投稿
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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(duì)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(duì)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(duì)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(zhǎng)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(zhǎng)沙,410083 期 刊: 中國(guó)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(hào): 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(hào): 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

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