本文關(guān)鍵詞： 黃鐵礦 毒砂 抑砷浮硫 抑硫浮砷 有機(jī)抑制劑Y-3#　出處：《江西理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：砷物質(zhì),會給人體健康和環(huán)境帶來嚴(yán)重的危害。由于砷黃鐵礦與黃鐵礦的可浮性極為相近,導(dǎo)致在硫化礦選礦工業(yè)生產(chǎn)中,砷通常會與硫化礦伴生,加之砷礦物又是金的主要載體,直接影響硫精礦的質(zhì)量和資源的浪費(fèi)。顯然,精礦降砷為選廠的必然措舉。因此,研究含砷硫化礦的浮選有效分離不僅能提高選礦廠的經(jīng)濟(jì)效益,而且還有具有一定的理論和實(shí)踐意義。論文以毒砂和黃鐵礦純礦物為研究對象,在調(diào)整劑、捕收劑等體系下,考察了毒砂、黃鐵礦的浮選行為。結(jié)果表明:在有機(jī)抑制劑Y-3#用量為24 mg/L的條件下,毒砂礦物的回收率為20.13%,而此時的黃鐵礦浮選回收率為85.19%。在礦漿p H值為8.5,有機(jī)抑制劑Y-3#用量為20 mg/L的條件下,實(shí)現(xiàn)了二者人工混合礦的浮選分離。對安徽某實(shí)際含砷硫精礦進(jìn)行了硫砷分離過程試驗(yàn)研究,以Y-3#為抑制劑“抑砷浮硫”與“抑硫浮砷”工藝流程方案。在實(shí)際含S 35.00%、含As 3.12%、含Au 0.90 g/t的條件下,通過“抑砷浮硫”流程閉路獲得了含S 46.12%、S回收率78.90%,含As0.06%、As回收率1.18%,含Au 0.25 g/t、Au回收率17.57%的硫精礦;含As 8.66%、As回收率98.82%,含S 21.24%、S回收率21.10%,含Au 2.02 g/t、Au回收率82.43%的砷精礦。實(shí)現(xiàn)了含砷硫化礦的高效浮選分離。與“抑硫浮砷”流程方案相比,試驗(yàn)獲得的硫精礦中含砷量較低,且硫的綜合指標(biāo)較好。因此,選用“抑砷浮硫”工藝流程方案對本實(shí)際礦物的分選更具有優(yōu)勢。采用紅外光譜、ξ-電位等分析測試方法,探討了有機(jī)抑制劑Y-3#對黃鐵礦、砷黃鐵礦純礦物的作用機(jī)理。結(jié)果表明:捕收劑丁基黃藥以雙黃藥形式在黃鐵礦表面與有機(jī)抑制劑Y-3#產(chǎn)生競爭吸附。有機(jī)抑制劑Y-3#與二者礦物中的表面金屬離子可能發(fā)生螯合作用,在其表面發(fā)生了化學(xué)吸附。
[Abstract]:Arsenic can cause serious harm to human health and environment. As the floatability of arsenopyrite and pyrite is very similar, arsenic is usually associated with sulphide ore in the industrial production of sulphide ore processing. In addition, arsenic mineral is the main carrier of gold, which directly affects the quality of sulfur concentrate and the waste of resources. The study on the effective flotation separation of arsenic-bearing sulphide ore can not only improve the economic benefit of the concentrator, but also have certain theoretical and practical significance. This paper takes the arsenopyrite and pyrite pure minerals as the research object, under the system of adjuster, collector, etc. The flotation behavior of arsenopyrite and pyrite was investigated. The recovery rate of arsenopyrite minerals is 20.13, while that of pyrite flotation is 85.19.The pH value of pulp is 8.5 and the amount of organic depressant Y-3# is 20 mg/L. The flotation separation of two artificial mixed ores has been realized. The experimental study on the separation process of sulfur and arsenic in an actual arsenic bearing sulfur concentrate in Anhui Province has been carried out. Under the actual conditions of S 35.00, as 3.12 and au 0.90 g / t, the technological process of "inhibiting arsenic and floating sulfur" and "inhibiting arsenic floating sulfur" and "suppressing arsenic and floating sulfur" as inhibitors were used as the inhibitors, respectively, under the conditions of actual content of S 35.00, as 3.12 and au 0.90 g / t, respectively. The sulfur concentrate containing S 46.12% S recovery 78.90, as 0.06 as recovery 1.18% and au 0.25 g / t au recovery 17.57% were obtained through the closed circuit of "suppression of arsenic and floating sulfur" process. The recovery rate of as 8.66 is 98.82%, the recovery rate of S 21.24N / S is 21.10%, and the recovery rate of au 2.02 g / t ~ (-1) au is 82.43%. The high efficiency flotation separation of arsenic-bearing sulphide ore has been realized. Compared with the scheme of "sulfur suppression floating arsenic", the arsenic content in the sulfur concentrate obtained by the experiment is lower. And the comprehensive index of sulfur is better. Therefore, it is more advantageous to select the technological process of "inhibiting arsenic and floating sulfur" for the separation of the actual minerals. The organic inhibitor Y-3# for pyrite is discussed by means of infrared spectrum, 尉-potential and other analytical and testing methods. The mechanism of action of arsenopyrite pure minerals. The results show that the collector Ding Ji xanthate acts as a double xanthate on the surface of pyrite to produce competitive adsorption with the organic inhibitor Y-3# and the surface metal ions in both minerals. May chelate, Chemisorption occurs on its surface.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD951

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 熊道陵,賀治國,湛雪輝;無機(jī)抑制劑在硫化礦浮選中抑制毒砂的研究進(jìn)展[J];化工礦物與加工;2004年08期

2 穆梟;陳建華;何奧平;;某含砷黃鐵礦尾礦浮選新工藝試驗(yàn)研究[J];金屬礦山;2008年03期

3 B·A·錢圖里亞 ,黎里;黃鐵礦和毒砂浮選分離的新藥劑[J];國外金屬礦選礦;2001年10期

4 M·B·M·蒙特 ,崔洪山 ,雨田;黃鐵礦和毒砂的氧化態(tài)對含金硫化礦石浮選的影響[J];國外金屬礦選礦;2003年07期

5 葉雪均;劉子帥;王李鵬;嚴(yán)偉平;江皇義;;某硫金礦硫砷分離試驗(yàn)研究[J];有色金屬科學(xué)與工程;2010年06期

6 唐曉蓮;黃銅礦與毒砂分離的抑制劑研究[J];礦產(chǎn)綜合利用;1996年01期

7 曾科;覃文慶;何名飛;賴紹師;;蒙自多金屬硫化礦砷硫分離技術(shù)研究[J];礦冶工程;2011年02期

8 肖駿;陳代雄;楊建文;曾惠明;;某銅硫砷錫多金屬礦選礦工藝研究[J];礦山機(jī)械;2014年08期

9 王淀佐,邱冠周,覃文慶,李柏淡;硫化礦物硫化鈉誘導(dǎo)浮選的電化學(xué)研究[J];有色金屬;1997年01期

10 孟書青 ,范順科;組合藥劑抑制毒砂[J];有色金屬(選礦部分);1987年03期

相關(guān)碩士學(xué)位論文 前2條

1 呂炳軍;黃鐵礦和毒砂的浮選分離試驗(yàn)研究[D];江西理工大學(xué);2010年

2 曾科;硫砷礦物浮選行為與分離的研究[D];中南大學(xué);2010年

，

本文編號：1513375