發(fā)布時(shí)間：2018-06-21 08:30

  本文選題：微細(xì)粒 + 銀礦　； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：銀在國(guó)際金融業(yè)和制造業(yè)等領(lǐng)域有著重要的應(yīng)用,隨著我國(guó)社會(huì)和經(jīng)濟(jì)的迅速發(fā)展,對(duì)銀礦資源的需求量正在不斷增大。我國(guó)銀資源儲(chǔ)量巨大,但優(yōu)質(zhì)銀礦正不斷減少,因此,以往難處理的銀礦資源,如微細(xì)粒銀礦、復(fù)雜伴生銀礦等,逐漸成為銀的重要來(lái)源。論文研究對(duì)象為云南某銀礦,原礦工藝礦物學(xué)研究表明,該礦樣中礦物組成復(fù)雜,嵌布微細(xì),鉛、鋅等金屬含量較低,銀為主要的有價(jià)元素,其品位為226.90g/t。原礦細(xì)粒級(jí)中(-0.038mm)銀分布率高達(dá)33.64%,屬于微細(xì)粒銀礦。論文通過(guò)條件試驗(yàn)、流程結(jié)構(gòu)試驗(yàn)和添加活性炭吸附浮選試驗(yàn),對(duì)該礦樣進(jìn)行了較為系統(tǒng)的浮選試驗(yàn)研究,并對(duì)活性炭強(qiáng)化銀礦物浮選的作用機(jī)理進(jìn)行了探討。通過(guò)浮選條件試驗(yàn)和流程結(jié)構(gòu)試驗(yàn),確定了該礦浮選回收的最佳流程為“一粗一精兩掃”。浮選最佳試驗(yàn)條件:原礦磨礦細(xì)度-0.074mm占90%;粗選組合抑制劑六偏磷酸鈉和水玻璃的配比為1:2,用量1500g/t;硫化鈉用量600g/t;組合捕收劑丁基黃藥和丁銨黑藥的配比2:1,用量150g/t;起泡劑2#油用量40g/t;掃選Ⅰ組合抑制劑六偏磷酸鈉和水玻璃的配比1:2,用量750g/t,硫化鈉用量300g/t;組合捕收劑丁基黃藥和丁銨黑藥的配2:1,用量75g/t;起泡劑2#油用量為20g/t;掃選Ⅱ組合抑制劑六偏磷酸鈉和水玻璃配比1:2,用量300g/t;硫化鈉用量150g/t,組合捕收劑丁基黃藥和丁銨黑藥配比2:1,用量45g/t;精選只添加捕收劑丁銨黑藥,用量25g/t。通過(guò)采用組合抑制劑和捕收劑,全流程閉路試驗(yàn)得到的精礦含銀品位為6084.68g/t,回收率為62.84%。對(duì)活性炭強(qiáng)化銀礦物浮選作用的研究表明,在磨礦階段添加3000g/t活性炭的情況下,采用“一粗一精兩掃”的全流程閉路試驗(yàn)得到的精礦含銀品位為5377.64g/t,回收率為68.08%。由此可以看出,在添加活性炭的情況下,銀精礦中的回收率較不添加的情況高出5.24個(gè)百分點(diǎn)。說(shuō)明活性炭的添加對(duì)精礦回收率的提高有較好的效果,但如何提高精礦含銀品位仍需要進(jìn)一步研究。通過(guò)掃描電子顯微鏡對(duì)添加活性炭前后的精礦進(jìn)行觀察可知,活性炭對(duì)銀浮選回收率的提高,主要體現(xiàn)在其對(duì)微細(xì)粒銀礦物的吸附作用;通過(guò)傅里葉變換紅外光譜儀和超聲波解吸脫附對(duì)兩種精礦分析得知,活性炭主要通過(guò)其物理吸附特性對(duì)礦樣中的微細(xì)粒銀礦物進(jìn)行吸附以達(dá)到強(qiáng)化回收銀的目的。
[Abstract]:Silver is widely used in international financial industry and manufacturing industry. With the rapid development of our society and economy, the demand for silver resources is increasing. The silver reserves in China are huge, but the quality silver ore is decreasing. Therefore, the difficult silver resources, such as fine silver ore, complicated associated silver ore and so on, have gradually become an important source of silver. The object of this paper is a silver ore in Yunnan Province. The mineralogical study of the raw ore shows that the mineral composition of the sample is complex, the embedded microelements are fine, the contents of lead, zinc and other metals are relatively low, and silver is the main valuable element with a grade of 226.90 g / t. The silver distribution rate is 33.64 mm and belongs to fine silver ore. Through condition test, flow structure test and activated carbon adsorption flotation test, the flotation experiment of the ore sample was carried out systematically, and the mechanism of activated carbon strengthening silver mineral flotation was discussed. Through flotation condition test and flow structure test, the best process of flotation recovery is determined as "one coarse, one fine and two sweep". The optimum flotation test conditions are as follows: grinding fineness of raw ore is -0.074 mm, the ratio of sodium hexametaphosphate and sodium silicate is 1: 2, the dosage of sodium sulfide is 1500 g / t, the ratio of combined collector Ding Ji xanthate and ammonium butylammonium black is 2: 1, the dosage of sodium hexametaphosphate and sodium silicate is 150 g / t, the ratio of sodium sulphide and ammonium butylammonium black is 2: 1, the dosage of sodium hexametaphosphate and sodium silicate is 150 g / t; Ratio of sodium hexametaphosphate to sodium silicate 1: 2, dosage 750 g / t, sodium sulphide 300 g / t; combination collector Ding Ji xanthate and ammonium butylammonium black: 2: 1, 75 g / t; foaming agent 2# oil 20 g / t; scavenging group II The ratio of sodium hexametaphosphate and sodium silicate is 1: 2, the dosage is 300 g / t; the dosage of sodium sulfide is 150 g / t; the ratio of Ding Ji xanthate and ammonium butyrate is 2: 1 and the dosage is 45g / t; The dosage is 25 g / t. By using combined inhibitor and collector, the silver grade of concentrate is 6084.68 g / t and the recovery rate is 62.84%. The study on the effect of activated carbon on the flotation of silver minerals shows that under the condition of adding 3000g/t activated carbon in the grinding stage, the silver grade of the concentrate is 5377.64g / t and the recovery is 68.08g / t by using the closed circuit test of "one coarse, one fine and two sweep". It can be seen that the recovery of silver concentrate is 5.24% higher than that without adding activated carbon. The results show that the addition of activated carbon has a good effect on the recovery rate of concentrate, but how to improve the silver grade of concentrate still needs further study. By scanning electron microscope (SEM), the concentration of activated carbon was observed before and after the addition of activated carbon, and it was found that the increase of the recovery rate of activated carbon for silver flotation was mainly reflected in the adsorption effect of activated carbon on fine silver minerals. By means of Fourier transform infrared spectroscopy (FTIR) and ultrasonic desorption and desorption of two kinds of concentrate, it is found that activated carbon adsorbs silver minerals in fine particles mainly through its physical adsorption characteristics to enhance the recovery of silver.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD923;TD953

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張亮;楊卉們;馮安生;趙軍偉;譚秀民;;全球銀礦資源概況及供需分析[J];礦產(chǎn)保護(hù)與利用;2016年05期

2 張大權(quán);江彪;王登紅;王成輝;陳毓川;白鴿;;中國(guó)銀礦的資源特征及成礦規(guī)律概要[J];地質(zhì)學(xué)報(bào);2015年06期

3 劉宏印;;湖北某難選金銀礦選礦工藝流程試驗(yàn)研究[J];湖南有色金屬;2013年05期

4 查輝;葛英勇;羅衡;黃龍;;從高酸鋅浸出渣中浮選回收銀的試驗(yàn)研究[J];中國(guó)礦業(yè);2013年07期

5 王麗偉;;銀資源現(xiàn)狀與發(fā)展態(tài)勢(shì)分析[J];河南科技;2013年06期

6 奚u!;;中外銀礦資源現(xiàn)狀分析[J];世界有色金屬;2012年06期

7 葛英勇;石美佳;曾李明;;載體浮選回收某鋅浸出渣中的銀[J];金屬礦山;2012年04期

8 孫柏;;“窮人的黃金”——白銀[J];金融博覽(財(cái)富);2011年04期

9 康文澤;李艷偉;鄭剛;;超聲波法活性炭再生研究[J];煤炭技術(shù);2011年02期

10 夏才俊;;白銀行業(yè)現(xiàn)狀及發(fā)展趨勢(shì)[J];中國(guó)金屬通報(bào);2010年21期

相關(guān)會(huì)議論文 前1條

1 童雄;;強(qiáng)化貴金屬金的選礦、化學(xué)提取、微生物浸出和深加工的新技術(shù)與新工藝[A];2005年全國(guó)選礦高效節(jié)能技術(shù)及設(shè)備學(xué)術(shù)研討與成果推廣交流會(huì)論文集[C];2005年

相關(guān)碩士學(xué)位論文 前10條

1 賴耀斌;高振實(shí)密度球形微米銀粉的制備工藝研究[D];昆明理工大學(xué);2014年

2 楊志超;白銀難處理鋅浸渣中銀的回收研究[D];武漢理工大學(xué);2013年

3 譚文才;大井子銅礦硫精礦中銀的回收技術(shù)研究[D];東北大學(xué);2013年

4 王天豐;銅陽(yáng)極泥中貴金屬的分離提純[D];東北大學(xué);2013年

5 林海山;二次資源中貴金屬分析方法的研究[D];中南大學(xué);2011年

6 趙喜太;回收貴金屬釕工藝技術(shù)的研究[D];東北大學(xué);2010年

7 陳耿濤;硫氰酸銨溶液從硫化銀錳精礦脫錳富銀渣中氧壓選擇性提銀[D];中南大學(xué);2010年

8 程永彪;鋅浸出渣銀浮選工藝試驗(yàn)研究[D];昆明理工大學(xué);2010年

9 李學(xué)強(qiáng);難處理金銀礦有價(jià)金屬高效利用的新工藝研究[D];中南大學(xué);2009年

10 張艮林;綠色環(huán)保技術(shù)浸出難處理金銀礦石的試驗(yàn)與機(jī)理研究[D];昆明理工大學(xué);2003年

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