本文選題：銅硫分離 + 新型抑制劑�。� 參考：《江西理工大學(xué)》2015年碩士論文

【摘要】：論文針對(duì)印尼某難選含銅鐵硫礦的綜合利用為研究目標(biāo),通過礦物組成分析,黃銅礦、黃鐵礦純礦物試驗(yàn),和實(shí)際礦石分選試驗(yàn),及紅外光譜分析等,查明了該礦難選的原因,完成了銅硫分離及鐵資源的綜合利用。礦物組成研究表明,該礦銅品位1.53%、鐵品位39.70%,硫品位13.46%,含銀14.00g/t,含金小于0.5g/t。磁鐵礦是含量最多金屬礦物,其次是黃鐵礦,少量赤鐵礦,黃銅礦,銅藍(lán)。含量比較稀少的有輝銅礦,菱鋅礦,斑銅礦,白鉛礦等,為微量。非金屬礦物成分較為復(fù)雜,有石英,石榴石,方解石,透閃石,滑石,絹云母,含鐵粘土礦物,綠簾石,綠泥石等。磁鐵礦呈致密的粒狀鑲嵌集合體形成塊狀,而黃鐵礦是脈狀分布。礦物單體解離度比較差。該礦難選的原因主要是(1)含鐵粘土礦物附著在磁鐵礦和黃鐵礦的表面,影響銅硫分離及硫浮選,導(dǎo)致鐵精礦含硫超標(biāo)。(2)銅礦物單體解離度差,因?yàn)榍恫剂６忍?xì)。(3)同時(shí)含有原生黃銅礦和次生的銅藍(lán)和輝銅礦等,導(dǎo)致礦漿中銅離子較多,活化黃鐵礦,造成銅硫難于分離。因此,該礦長(zhǎng)期的生產(chǎn)和實(shí)驗(yàn)表明,浮選僅獲得銅精礦銅品位10~12%,鐵精礦品位低于60%,且含銅、硫嚴(yán)重超標(biāo),無法獲得合格精礦產(chǎn)品。因此,要實(shí)現(xiàn)該礦的銅硫鐵資源綜合利用的關(guān)鍵,是解決礦漿中銅離子對(duì)黃鐵礦的活化問題,在獲得高品位銅精礦時(shí),實(shí)現(xiàn)硫的回收。然后,再回收鐵�；谶@個(gè)原因,對(duì)礦漿p H值對(duì)黃鐵礦、黃銅礦的可浮性影響進(jìn)行了研究,結(jié)果表明pH對(duì)黃銅礦可浮性沒有太大影響;但硫酸銅可以對(duì)黃鐵礦起到顯著活化作用。采用新型組合抑制劑(HT1)+(HT2)可對(duì)黃鐵礦有效抑制,對(duì)黃銅礦不抑制,能夠?qū)崿F(xiàn)銅硫浮選分離。探索了先磁后浮和先浮后磁兩種不同工藝方案,最終確定了先浮后磁工藝流程,以新型組合抑制劑HT1+HT2作為黃鐵礦抑制劑,獲得了銅精礦產(chǎn)率6.71%、品位17.41%、回收率76.87%;硫精礦產(chǎn)率15.54%、品位43.87%、回收率50.64%;鐵精礦產(chǎn)率38.95%、品位63.55%、回收率62.35%。銅精礦中含Au3.5g/t、Ag120g/t的良好指標(biāo)。紅外光譜分析得知,新型抑制劑HT1和HT2是一種含鈣藥劑,其之所以能使黃鐵礦得到抑制是因?yàn)槠渌拟}離子與黃鐵礦中的硫發(fā)生反應(yīng),生成親水性沉淀覆蓋在表面,從而阻止Cu2+活化,降低了黃鐵礦的可浮性,進(jìn)而使黃鐵礦受到了抑制。
[Abstract]:Aiming at the comprehensive utilization of a refractory copper-ferric sulfur ore in Indonesia, the paper finds out the causes of the ore difficulty by mineral composition analysis, chalcopyrite, pyrite pure mineral test, and actual ore separation test, and infrared spectrum analysis, etc. The separation of copper and sulfur and the comprehensive utilization of iron resources have been completed. The mineral composition study shows that the copper grade of the ore is 1.53%, the iron grade is 39.70%, the sulfur grade is 13.46%, the silver content is 14.00 g / t, and the gold content is less than 0.5 g / t. Magnetite is the largest metal mineral, followed by pyrite, a small amount of hematite, chalcopyrite, copper blue. The rare ones are chalcopyrite, smithsonite, placerite, white lead ore and so on. The composition of nonmetallic minerals is complex, such as quartz, garnet, calcite, tremolite, talc, sericite, iron clay minerals, verdant, chlorite, etc. Magnetite is a dense granular mosaic and pyrite is a vein-like distribution. The dissociation degree of mineral monomer is poor. The main reason for this mineral difficulty is that the iron bearing clay mineral adheres to the surface of magnetite and pyrite, which affects the separation of copper and sulfur and the flotation of sulfur, which leads to the poor dissociation degree of iron concentrate from iron concentrate. Because the inlay granularity is too fine, there are both primary chalcopyrite and secondary copper blue and chalcopyrite, which lead to more copper ions in the pulp, activate pyrite, and make it difficult to separate copper and sulfur. Therefore, the long-term production and experiment of the ore show that the copper grade of copper concentrate is only 10 ~ 12% by flotation, the grade of iron concentrate is less than 60%, and the copper content and sulfur content are too high to obtain qualified concentrate products. Therefore, the key to realize the comprehensive utilization of copper, sulfur and iron resources in the ore is to solve the problem of the activation of pyrite by copper ions in the slurry, and to realize the recovery of sulfur when the high grade copper concentrate is obtained. Then, the iron is recycled. For this reason, the effect of pH value of pulp on the floatability of pyrite and chalcopyrite is studied. The results show that pH has no great effect on the floatability of chalcopyrite, but copper sulfate can activate pyrite significantly. The flotation separation of copper and sulfur can be realized by using a new type of combination depressant (HT1) HT2) to restrain pyrite effectively and not to inhibit chalcopyrite. In this paper, two different technological schemes of magnetic floatation and floatation were explored, and the technological process of floatation and magnetization was finally determined. A new combination inhibitor, HT1HT2, was used as pyrite inhibitor. The copper concentrate yield of 6.71%, grade 17.41, recovery rate 76.87; sulfur concentrate yield 15.54, grade 43.87 and recovery rate 50.64; iron concentrate yield 38.95%, grade 63.55; recovery rate 62.35; copper concentrate yield 6.71%, grade 17.41; sulfur concentrate yield 15.54; grade 43.87; recovery rate 50.64; iron concentrate yield 38.95; grade 63.55; recovery rate 62.35. The copper concentrate contains a good index of au 3.5g / t Ag 120g / t. Infrared spectrum analysis shows that HT1 and HT2 are calcium containing agents, which can inhibit pyrite because its calcium ions react with sulfur in pyrite and form hydrophilic precipitates to cover the surface. Thus, the activation of Cu _ 2 was prevented, the floatability of pyrite was reduced, and pyrite was restrained.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD952

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