本文選題：黃銅礦 + 磁黃鐵礦�。� 參考：《江西理工大學(xué)》2017年碩士論文

【摘要】：磁黃鐵礦主要有六方磁黃鐵礦和單斜磁黃鐵礦兩種晶系結(jié)構(gòu),兩種晶型的磁黃鐵礦可浮性差異較大,單斜磁黃鐵礦的疏水性和可浮性好于六方磁黃鐵礦,且相比六方磁黃鐵礦難以被抑制,其可浮性與黃銅礦相近,固黃銅礦與單斜磁黃鐵礦的浮選分離較為困難。本論文通過(guò)單礦物的浮選行為研究篩選出黃銅礦的高效選擇捕收劑和磁黃鐵礦的強(qiáng)抑制劑;采用總有機(jī)碳TOC、紅外光譜測(cè)試浮選藥劑在純礦物表面的吸附量和吸附方式來(lái)分析藥劑在礦物表面的作用機(jī)理;最后將開發(fā)的選礦新藥劑應(yīng)用于實(shí)際礦石的浮選試驗(yàn)中。研究的主要結(jié)論如下:通過(guò)考察捕收劑、銅離子、抑制劑及礦漿pH條件對(duì)黃銅礦和磁黃鐵礦浮選行為影響的試驗(yàn)研究,得出以下結(jié)果:丁基鈉黃藥、酯105、XKP-01、D12+A6、XKCP-05這五種捕收劑對(duì)黃銅礦的捕收力強(qiáng)弱為:XKCP-05XKP-01D12+A6酯105丁基鈉黃藥,對(duì)磁黃鐵礦的捕收性能為:丁基鈉黃藥XKP-01酯105D12+A6XKCP-05,新型捕收劑XKCP-05對(duì)黃銅礦有最好的選擇捕收性;腐植酸鈉、木質(zhì)素磺酸鈉、氯化鈣、羧化殼聚糖、氯化鈣+腐植酸鈉、海藻酸鈉幾種有機(jī)高分子抑制劑對(duì)黃銅礦的抑制性能強(qiáng)弱為:木質(zhì)素磺酸鈉海藻酸鈉氯化鈣腐植酸鈉氯化鈣+腐植酸鈉羧化殼聚糖,而對(duì)磁黃鐵礦的抑制性能強(qiáng)弱為:羧化殼聚糖海藻酸鈉氯化鈣+腐植酸鈉腐植酸鈉木質(zhì)素磺酸鈉氯化鈣,羧化殼聚糖為黃銅礦、磁黃鐵礦浮選分離的高效選擇抑制劑。通過(guò)測(cè)定浮選捕收劑和抑制劑在黃銅礦及磁黃鐵礦表面的總有機(jī)碳值來(lái)表征浮選藥劑在礦物表面的吸附行為:得出五種捕收劑中XKCP-05在黃銅礦表面的吸附量最大,在磁黃鐵礦表面的吸附量最小,是XKCP-05對(duì)黃銅礦浮選的選擇捕收性最好的原因,堿性礦漿pH條件下XKCP-05在磁黃鐵礦表面的吸附量減少,驗(yàn)證了XKCP-05對(duì)黃銅礦的選擇捕收性最好;有機(jī)高分子抑制劑羧化殼聚糖在磁黃鐵礦表面的吸附作用最強(qiáng),對(duì)磁黃鐵礦的抑制效果最顯著,在黃銅礦表面的吸附較弱,對(duì)黃銅礦的疏水性影響甚微。捕收劑XKCP-05和抑制劑羧化殼聚糖分別在黃銅礦、磁黃鐵礦表面作用前后的紅外光譜可知:黃銅礦及磁黃鐵礦表面出現(xiàn)了新的伸縮振動(dòng)峰并發(fā)生了位移偏振,捕收劑XKCP-05和抑制劑羧化殼聚糖在黃銅礦及磁黃鐵礦表面發(fā)生了物理吸附和化學(xué)吸附。青海賽什塘銅礦選礦試驗(yàn)驗(yàn)證了采用捕收劑XKCP-05、抑制劑“石灰+羧化殼聚糖”最為合適,經(jīng)一粗兩精一掃的閉路試驗(yàn)流程可獲得銅品位21.85%、金品位1.45g/t、銀品位384.50g/t,銅的回收率94.37%、金的回收率25.01%、銀的回收率68.46%的銅精礦,相比采用捕收劑為“D12+A6”的原工藝銅、金及銀的回收率分別提高了3.91、6.09及16.56個(gè)百分點(diǎn);且工藝流程上減少了一個(gè)精選作業(yè)和一個(gè)掃選作業(yè),降低了工藝成本。
[Abstract]:Pyrrhotite mainly has two crystal system structures: hexagonal pyrrhotite and monoclinic pyrrhotite. The floatability of the two types of pyrrhotite is quite different, and the hydrophobicity and floatability of monoclinic pyrrhotite are better than that of hexagonal pyrrhotite. Compared with hexagonal pyrrhotite, the floatability of pyrrhotite is similar to that of chalcopyrite, and the flotation separation of solid chalcopyrite and monoclinic pyrrhotite is more difficult than that of hexagonal pyrrhotite. In this paper, the flotation behavior of single mineral was studied to screen out the highly selective collector of chalcopyrite and the strong depressant of pyrrhotite. The adsorption amount and adsorption mode of flotation reagents on the surface of pure minerals were measured by using total organic carbon TOC.The new flotation reagent was applied to the flotation tests of real ores at last. The main conclusions are as follows: by investigating the effects of collector, copper ion, depressant and pulp pH on flotation behavior of chalcopyrite and pyrrhotite, the following results are obtained: Ding Ji sodium xanthate, The collection power of the five collectors for chalcopyrite is: XKCP-05XKP-01D12 A6 xanthate 105 Ding Ji sodium xanthate, and the collection performance of Ding Ji sodium xanthate XKP-01 ester 105D12 A6XKCP-05, the new collector XKCP-05 has the best ability to capture chalcopyrite, sodium humate, sodium humic acid, sodium humate, sodium humate, Sodium lignosulfonate, calcium chloride, carboxylated chitosan, calcium chloride humate, The inhibition of sodium alginate on chalcopyrite is as follows: sodium lignosulfonate sodium alginate sodium humic acid sodium calcium humate sodium chloride sodium humate sodium chloride chitosan; The inhibitory properties of pyrrhotite are: sodium carboxylate chitosan sodium alginate calcium humate sodium lignosulfonate sodium calcium chloride carboxylation chitosan as chalcopyrite and high efficiency selective depressant for separation of pyrrhotite. The adsorption behavior of flotation reagents on the surface of chalcopyrite and pyrrhotite was characterized by measuring the total organic carbon values of flotation collectors and depressants on the surface of chalcopyrite and pyrrhotite. The smallest amount of adsorption on the surface of pyrrhotite is the best reason for the selective collection of chalcopyrite flotation by XKCP-05. The decrease of adsorption amount of XKCP-05 on pyrrhotite surface at pH of alkaline pulp proves that XKCP-05 has the best selective capture of chalcopyrite. The adsorption of organic polymer inhibitor carboxylation chitosan on the surface of pyrrhotite is the strongest, the inhibition effect on pyrrhotite is the most obvious, and the adsorption on the surface of chalcopyrite is weak, which has little effect on the hydrophobicity of chalcopyrite. The infrared spectra of collector XKCP-05 and inhibitor carboxylation chitosan on the surface of chalcopyrite and pyrrhotite show that there are new stretching vibration peaks and displacement polarization on the surface of chalcopyrite and pyrrhotite. Physical and chemical adsorption of collector XKCP-05 and inhibitor carboxylated chitosan on chalcopyrite and pyrrhotite surface was observed. The dressing test of Sesitang Copper Mine in Qinghai Province proved that the collector XKCP-05 is the most suitable for the inhibitor "Lime carboxylation chitosan". Through the closed circuit test of one coarse, two fine and one sweep, the copper grade is 21.85, the gold grade is 1.45 g / t, the silver grade is 384.50 g / t, the copper recovery rate is 94.37g / t, the gold recovery rate is 25.01, and the silver recovery rate is 68.46%. Compared with the original process copper, the collector is "D12A6". The recoveries of gold and silver increased by 3.91% 6.09 and 16.56% respectively, and the process cost was reduced by one cleaning operation and one scavenging operation.
【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】：2017
【分類號(hào)】：TD923

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本文編號(hào)：1977576