新型捕收剂DTX-1常温分步浮选东鞍山铁矿混磁精-矿业114网 
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新型捕收剂DTX-1常温分步浮选东鞍山铁矿混磁精
2014-08-05
随着入选铁矿石中菱铁矿含量的升高,东鞍山混磁精反浮选精矿铁品位和铁回收率均呈 下降趋势。为 了确保高菱铁矿矿石资源的顺利开发,并改善反浮选精矿指标,东北大学用新研制的改性脂肪酸 类常温捕收剂DTX -1,对东鞍山混磁精进行了先正浮选菱铁矿、后反浮选石英等脉石矿物的分步浮选试验。结果 表明,对东鞍山选矿厂 混磁精进行1次开路正浮选菱铁矿,1粗1精2扫、中矿顺序返回闭路反浮选脱硅,最终可获得 铁品位为6587%、铁 回收率为6792%的铁精矿,与现场1粗1精3扫、中矿顺序返回闭路反浮选精矿指标比较 ,精矿铁品位和铁回收率分 别提高了247和282个百...
SeJruileysꢀ N2o014457ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ !ꢀ ꢀ "ꢀ ꢀ #ꢀ ꢀ $ 20%14&(4&577'' ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ METAL MINE · "%#$· · 6¸¹m DTX -1 º»*¼½œ¾¿¦@%ƒÀÁ } ~ ꢀ (,€ ꢀ 5‚ ꢀ Kƒ„ ( )*+,-./0123,4, 56 78 110819) / ꢀ 0ꢀ Nú•Ì÷F‰v÷F$˜m2-, ™vB”öɝwÌÉF÷\®l÷XNn[„^¢„ꢀ。 M א-v÷FF‰<=mšPñꢀ, ❞wÌÉF¨†, ™šš&QQ4ÉmŸ{x.îDyzNꢀ DTX 1, ڙvB”öÉ«i¨Û·wÌv÷F、 ܝw̉©.L‰FRmÃOw̓W。 ϛ‰£, ڙvBÌFC öÉ«i 1 ýñ¬·wÌv÷F, 1 ‰ 1 É 2 Æ、 FšÉ{Xm¬wÌ|£, ©¿«Y÷\®M 65 87% 、 ÷ ¨ - ” XNnM 67 92% m÷ÉF, >ꢀÑ 1 ‰ 1 É 3 Æ、 FšÉ{Xm¬wÌÉF¨†Î™, ÉF÷\®l÷XNnà só-¨ 2 47 l 2 82 Ê¡Ã2, Š#uŒ„Ÿœ§m€^, 1\¨†Yi¨1ڝž。 1 23ꢀ *qrꢀ s›#ꢀ ]tuQꢀ vuQꢀ wuQꢀ xyç DTX - 1 + ꢀ ꢀ 45678ꢀ TD923 . 7ꢀ ꢀ ꢀ 9:;<=ꢀ Aꢀ ꢀ ꢀ 9>?8ꢀ 10011250( 2014) 0706104 Stepped Flotation of Donganshan Mixed Iron Magnetic Concentrate at Normal Temperature Using a New Collector DTX1 Zhu Yiminꢀ Chen Jinxinꢀ Ren Jianleiꢀ Wang Tingxia ( College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China) Abstractꢀ With the increase of siderite content in raw iron ore, the iron grade and recovery of the reverse flotation con centrate derived from Donganshan mixed magnetic concentrate was decreased. In order to well develop the high siderite iron ore resources, and improve the reverse flotation concentrate index, a new modification fatty acids collector DTX1 synthesized by Northeastern University was used in stepped flotation of the mixed magnetic concentrate, Donganshan Dressing Plant, at room temperature. The results showed that mixed magnetic concentrate of Donganshan Dressing Plant, were treated by the closedcir cuit process of siderite concentration by one direct flotation, and desilication by reverse flotation of one roughing, one cleaning, two scavenging and middles back to the flowsheet, iron concentrate with iron grade of 65. 87% and recovery of 67. 92% was a chieved. Comparing with the concentrate index of onsite reverse flotation process of one roughing, one cleaning and three scav enging, iron grade and recovery of concentrate was increased by 2. 47 and 2. 82 percentage points respectively, iron concentrate index is improved remarkably with relative complex mineral processing operation. Keywordsꢀ Mixed magnetic concentrate, Siderite, Stepped flotation, Direct flotation, Reverse flotation, Collector DTX1 ꢀ ꢀ ™vB÷F‰FRtî?、 Ïxx0„、 }­ , ‘’ã”öɐmv÷FŠö、 ¥÷Fl‰©‰ |[jŠ¾¡õꢀ¼[ 57] , 5÷FR€Éꢀ³Ú v÷FùRØm€É.Q, M2Ár4, ff·cà õm‰©hiRØm€É.Q, WHÚ¨³Ú õö、 ¥÷Fmùð€É, Z5HIÉF÷\® l÷XNnññ^¢。 ÞÁ|, fghmo̤¥÷F‰。 2000 @BÜ, ™ vB}ÏC«i¨ó÷¢£#u0, 0Üm#u M 2 Ë%©~F、 Fµ~、 ‰|ÃÌ、 ÇÌ— Ú öÌ— 4öÌ— 5ì)w̯Ќ, ”öÉ 1 ‰ Œ 1 É 3 Æ、 FšÉ{XwÌ, wÌÉF÷\® l÷XNnÃsÖ 64 80% l 68 70% y{。 º@ A, Nú™vB÷F‰v÷F$˜mV@j2, ” öɝwÌð›V@^¢[ 14] , *wwÌÉF÷\ ÛÛ·wÌe™vBÌFC”öɐmv÷F, µwÌe‰©.“ÞL‰FRmÃOwÌ#u¿ ùðó-÷ÉF¨†[ 8] 。 M*w!µ÷ùꢀ}mv ÷F-ðzNꢀ, L, 4Év÷Fm-ðzNꢀã ® l÷XNnÃs¢T 63 40% 、 65 10% 。 :“Î ! % ) "#$ꢀ 20140423 &'(ꢀ !"#$%&'()*( +,: 51274056) , “ ÌJÍ” !"%õ÷ø§Î)*( +,: 2012BAB14B05) 。 *+,ꢀ »Rã( 1964— ) , –, >?, 01。 · 61· % & 457 'ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ !ꢀ ꢀ "ꢀ ꢀ #ꢀ ꢀ $ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 2014 (& 7 ' Vꢀ™vBÌFC”öÉ-ðÃÌm¯°[ 9] 。 DTX NaOH l HCl ïHFš pH Þ, “Wϛxv 3。 - 1 M™šš&Q4ÉmRtŸ{x.îzNꢀ, Úv÷Fù]•mzNð›, L, l“WB DTX - MzNꢀ, }ŽÃOwÌ#uڙvBÌFC”ö É«i¨Dyw̓W。 1 1 ꢀ >ꢀ Ø “ WF$M™vBÌFC”öÉ, - 0 074、 -  038 mm ÃsØ 97 77% l 72 39% , ‘’¥&}à 0 Ãϛx‰ 1, XRD Ãϛxv 1。 5 3ꢀ ëÚ[ pH ‡>?m• † 1ꢀ >؏0rœ{66¡m• Fig. 3ꢀ Direct flotation results under various pH value Table 1ꢀ Main chemical composition analysis of the sample □ ■ — $˜; — XNn % Äv 3 ¿P, NúFš pH Þm2-, v÷FÉ F FeCO $˜l FeCO XNn[„j2„ꢀ。 YÐ } $ } $ ꢀ ꢀ ꢀ ꢀ à ˜ à ˜ TFe 45 64 MgO FeO 9 35 S SiO 2 37 63 Al 2 1 62 O 3 CaO 3 3 1 36 }– 3 55 › œ, ×Ø·wÌv÷FmFš pH = 8 5。 P FeCO 7 37 3 0 65 0 03 0 03 2 1 2ꢀ DTX -1 Y¨>? v÷FwÌ DTX - 1 Q˜“WeØFš pH = 8  5, ³Q˜M 800 g / t, “Wϛxv 4。 5 1ꢀ >Ø XRD 6¡m• Fig. 1ꢀ XRD pattern of the sample ○ ◆ ■ ▲ — ‰©; — ¥÷F; — ö÷F; — v÷F; — ÷ª´‰ ● 5 4ꢀ ëÚ[ DTX -1 Y¨>?m• ĉ 1 ¿P, “$ Fe、 SiO2 、 FeCO $˜[™ Fig. 4ꢀ Direct flotation test results with different dosage of DTX -1 3 - , ÃsÖ 45 64% 、 37 63% 、 7 37% , S、 P $˜[] □ ■ — $˜; — XNn £ 。 Zv 4 ¿P, Nú DTX - 1 Q˜mXš, v÷F ÉF FeCO $˜l FeCO XNnÛj2Ü^¢。  Äv 1 ¿P, “$m‘’}ÃM‰©、 ¥÷F、 ö÷F、 v÷Fl÷ª´‰。 3 L, ×Ø·wÌv÷Fm DTX - 1 Q˜M 50 g / t。 3 2 ꢀ >?m•©Ù– 2  1 3ꢀ Ü}Y¨>? 2  1ꢀ ëÚ[ÛÁC®¯>? v÷Fẃ³Q˜“WeØFš pH = 8 5, v÷F·ẘDy^«i, \]“WŒxv DTX - 1 Q˜M 50 g / t, “Wϛxv 5。 2 。 5 2ꢀ ëÚ[ÛÁC®¯>?Y™ Fig. 2ꢀ Flowsheet of direct flotation of siderite 5 5ꢀ ëÚ[Ü}Y¨>?m• 2  1 1ꢀ pH ‡>? Fig. 5ꢀ Direct flotation test results with different dosage of starch v÷FwÌ pH ޓWeØ÷FR€Éꢀ³ □ ■ — $˜; — XNn Q˜M 800 g / t, zNꢀ DTX - 1 Q˜M 50 g / t, Q · 62· ꢀ ꢀ ꢀ z{|s: }‘xyç DTX - 1 ~]tuQ)€$›#*qrꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 2014 (& 7 ' Äv 5 ¿P, Nú³Q˜mXš, v÷FÉF FeCO $˜j2, FeCO XNnÛj2Ü^¢, § 3 3 ³ Q˜M 800 g / t g, XNnÖi©-, M 73 67% 。 L, ×Ø·wÌv÷F³Q˜M 800 g / t。  2ꢀ ÝÚ[Þ|®¯>? ·wÌ|v÷FÜ«i¨DywÌ|£\ “W, DywÌ|£\]“WŒxv 6。  2 ] 5 8ꢀ ÝÚ[ CaO Y¨>?m• Fig. 8ꢀ Reverse flotation test results with different dosage of CaO □ ■ — \®; — XNn 2  2 3ꢀ DTX -1 Y¨>? wÌ|£ DTX - 1 Q˜“We؁³Q˜M 00 g / t, CaO Q˜M 600 g / t, Fš pH = 11 5, “WÏ xv 9。  6 › 5 6ꢀ ÝÚ[Þ|®¯>?Y™ Fig. 6ꢀ Flowsheet of reverse flotation for desilication  2 1ꢀ Ü}Y¨>? wÌ|£÷FR€Éꢀ³Q˜“WeØF 2 š pH = 11 5, ¬¥ꢀ CaO Q˜M 600 g / t, zNꢀ DTX - 1 Q˜M 600 g / t, “Wϛxv 7。 5 9ꢀ DTX -1 Y¨>?m• Fig. 9ꢀ Reverse flotation test results with different dosage of DTX1 □ ■ — \®; — XNn Äv 9 ¿P, Nú DTX - 1 Q˜mXš, wÌ ÉF÷\®j2, ÷XNn^¢。 YЛœ, ×Ø w‰Ì DTX - 1 Q˜M 600 g / t。 2 2 4ꢀ pH ‡>?  wÌ|£ pH ޓWe؁³Q˜M 600 g / t, ‰  5 7ꢀ ÝÚ[Ü}Y¨>?m• Fig. 7ꢀ Reverse flotation test results with different dosage of starch CaO Q˜M 600 g / t, DTX - 1 Q˜M 600 g / t, “WÏ □ ■ — \®; — XNn › xv 10。 Äv 7 ¿P, Nú³Q˜mXš, wÌ‰É F÷\®Ûj2Ü^¢, ÷XNnj2。 YЛœ, ؝w‰Ì³Q˜M 600 g / t。  2 2ꢀ CaO Y¨>? wÌ|£ CaO Q˜“We؁³Q˜M 600 g / t, Fš pH = 11 5, DTX - 1 Q˜M 600 g / t, “WÏ xv 8。 Äv 8 ¿P, Nú CaO Q˜mXš, wÌ‰É F÷\®Ûj2ÜBQŠ-®, ÷XNn^¢。 YÐ œ, ×؝w‰Ì CaO Q˜M 600 g / t。 × 2  › 5 10ꢀ ÝÚ[CJ pH ‡>?m• Fig. 10ꢀ Reverse flotation test results under various pH value › □ ■ — \®; — XNn · 63· % & 457 'ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ !ꢀ ꢀ "ꢀ ꢀ #ꢀ ꢀ $ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 2014 (& 7 ' ꢀ ꢀ Äv 10 ¿P, NúFš pH Þ2-, wÌ‰É |£, ©¿«Y÷\®M 65 87% 、 ÷XNnM 67 92% m÷ÉF, >ꢀÑ 1 ‰ 1 É 3 Æ、 FšÉ{ Xm¬wÌÉF¨†Î™, ÉF÷\®l÷XNn Ãsó-¨ 2 47 l 2 82 Ê¡Ã2。 F÷\®j2, ÷XNn^¢。 YЛœ, ×؝w ‰ ÌFš pH = 11 5。 2  3ꢀ ßà>? p¢Bj·、 wÌ\]“W, B¡ñ¬“WÏ oꢀ —ꢀ 9ꢀ : › , ×Ømm¬“WŒxv 11, “Wϛx‰ 2。 [ 1] ꢀ °‚Ð, ¶=p, "ÎF, .. v÷FmYÐPQ4:[ J] . 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Influence of the siderite in Donganshan iron ore on reverse flotation[ J] . Metal Mine, 1 ꢀ \ 1ꢀ n ÷\® 43 70 65 87 22 67 45 64 XNn 12 01 67 92 20 07 100 00 - .¤§ 12 54 47 06 40 40 100 00 2 008( 10) : 5255. ÷ ÉF [ 6] ꢀ »"‡. !÷FÌFõö[ M] . šꢀ: ¡(#/eœ¢, 1994. Zhu Jiaji. China Iron Ore Beneficiation Technology [ M] . Beijing: Metallurgical Industry Press, 1994. Ðꢀ Îꢀ F F [ [ 7] ꢀ Araujo A C, Viana P R M, Peres A E C. Reagents in iron ores flota tion[ J] . Minerals Engineering, 2005, 18: 219224. ꢀ ꢀ ĉ 2 ¿P, “$òQv 11 s½mŒƒS, © «Y¨÷\®M 65 87% 、 ÷XNnM 67 92% m ÉF。  8] ꢀ °ꢀ £, ­£ˆ, þÀÆ, .. ™vB$-.¤oÌ÷F‰ÃO ÷ wÌ#u4:[ J] . (fFB, 2007( 9) : 6264. 3 ꢀ mꢀ – Zhang Ming, Liu Mingbao, Yin Wanzhong, et al. Investigation on steppedflotation process for Donganshan carbonatecontaining refrac tory iron ore[ J] . Metal Mine, 2007( 9) : 6264. 9] ꢀ 5̉, þÀÆ, °ꢀ 4, .. ÌJŠwÌGü^v÷FÚ÷F R¡‰©”ÐFwÌm34[ M] ∥!òÌõöÌ@Xp>+ ( 1) ™vBÌFC”öÉÞÁ1|, - 0 038 mm Ø 72 39% , ‘’¥&}à Fe、 SiO 、 FeCO $˜Ãs 2 3 [ Ö 45 64% 、 37 63% 、 7 37% , ™-$˜mv÷FŠ ö、 ¥÷Fl‰©‰|m¾¡õã0}wÌÉF   šꢀ: ¡(#/eœ¢, 2012, 215221. ÷ \®l÷XNn^¢mΏ。 L, ÛÛ·wÌe v÷F, µwÌe‰©.“ÞL‰FR¿ùðó- ÷ ÉF¨†。 Li Lixia, Yin Wanzhong, Zhang Qiang, et al. Flotabilities of siderite on iron minerals and quartz in flotation system of dodecylamine[ M] ∥ Retrospect and Prospect of China Mining Technology in Ten Years. Beijing: Metallurgical Industry Press, 2012, 215221. ( 2) ڙvBÌFC”öÉ 1 ýñ¬·wÌv ( Ê£+Ëꢀ ‚õ) ÷ F, 1 ‰ 1 É 2 Æ、 FšÉ{Xm¬w̌ · 64·
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