外文翻譯---鞍山地區(qū)貧赤鐵礦選礦工藝新進(jìn)展

1、<p>　　附錄一：科技英語翻譯及原文</p><p>　　鞍山地區(qū)貧赤鐵礦選礦工藝新進(jìn)展</p><p>　　摘要：通過對鞍山地區(qū)三大貧赤鐵礦選礦廠的工藝流程和指標(biāo)的介紹,分析了各選廠在工藝流程方面的各自特點(diǎn)及存在的一些問題,指出強(qiáng)磁機(jī)和掃中磁機(jī)的引入,穩(wěn)定了工藝流程,提高了分選效率;粗粒重選有利于鐵礦物的充分回收;陰離子反浮選保證了精礦品位合格。鞍山地區(qū)貧赤鐵礦工藝流程的成功

2、應(yīng)用,為我國貧赤鐵礦選礦開辟了一條新的途徑。</p><p>　　關(guān)鍵詞：貧赤鐵礦　強(qiáng)磁選　中磁　重選　陰離子反浮選</p><p>　　近年來,由于鋼鐵產(chǎn)品需求量激增,鐵礦資源變得尤為重要,我國鐵礦資源十分豐富,但是難選的貧赤鐵礦所占比重很大。鞍鋼是我國重要的鋼鐵工業(yè)基地,隨著大規(guī)模工業(yè)開采的不斷進(jìn)行, 貧赤鐵礦的產(chǎn)量將占礦石總產(chǎn)量的50%以上。鞍山礦業(yè)公司是目前鞍鋼主要的鐵礦供應(yīng)基地,

3、生產(chǎn)的鐵礦石主要是細(xì)粒嵌布的貧赤鐵礦。</p><p>　　近幾年針對鞍山地區(qū)三大貧赤鐵礦選礦廠,即齊大山選礦廠,調(diào)軍臺(tái)選礦廠,東鞍山燒結(jié)廠進(jìn)行了選礦試驗(yàn)研究,其中對齊大山選礦廠和東鞍山燒結(jié)廠進(jìn)行了大規(guī)模的技術(shù)改造,使新的貧赤鐵礦工藝流程得以實(shí)施。齊大山選礦廠采用階段磨選,重選- 磁選- 反浮選流程,調(diào)軍臺(tái)選礦廠采用連續(xù)磨礦, 弱磁- 強(qiáng)磁- 反浮選流程,東鞍山燒結(jié)廠采用連續(xù)磨礦,中礦再磨, 重選- 磁選- 反浮

4、選流程。生產(chǎn)實(shí)踐表明,這3個(gè)選礦廠的工藝流程,取得了良好的技術(shù)經(jīng)濟(jì)效果。</p><p><b>　　1、礦石特征</b></p><p>　　鞍山地區(qū)貧赤鐵礦以赤鐵礦和假象赤鐵礦為主。均系前震旦紀(jì)沉積變質(zhì)磁鐵礦石英巖或赤鐵礦- 磁鐵礦石英巖,礦體厚大,儲(chǔ)量豐富,地表氧化程度較深,且深部逐漸過渡到磁鐵礦。礦石的化學(xué)組成十分簡單,主要元素為鐵和硅,其它有害雜質(zhì)甚少,礦石

5、品位一般在25%～ 30%之間變化,屬于高硅低硫磷貧赤鐵磁鐵礦石英巖。礦石主要金屬礦物為赤鐵礦, 假象貧赤鐵礦,鏡鐵礦以及少量的菱鐵礦;脈石礦物主要為石英,另有少量的角閃石,透閃石,綠泥石等硅酸鹽礦物。少量礦石結(jié)晶粒度較細(xì),呈細(xì)粒不均勻嵌布。鐵礦物最大為1. 0 mm,最小為0. 005 mm,一般分布在0. 3～ 0. 04 mm之間。</p><p>　　2、工藝流程及選別指標(biāo)</p><

6、p>　?。?）齊大山選礦廠工藝流程及主要工藝指標(biāo)。</p><p>　　原礦經(jīng)一段磨礦分級后,一次溢流經(jīng)水力旋流器粗細(xì)分級,粗粒產(chǎn)品由螺旋溜槽處理,細(xì)粒經(jīng)弱磁、強(qiáng)磁選別,混磁精反浮選。粗,細(xì)粒二者均產(chǎn)出最終精礦。重選精螺尾與掃螺精經(jīng)掃中磁后的掃中磁精再磨返回水力旋流器。掃中磁尾礦、強(qiáng)磁尾和反浮選尾礦合并為綜合尾礦。綜合選別指標(biāo)為鐵精礦品位67. 50% ,金屬回收率75. 00%。工藝流程見圖1。</

7、p><p>　　圖1　齊大山選礦廠紅鐵礦選礦工藝流程</p><p>　　(2) 調(diào)軍臺(tái)選礦廠工藝流程及主要工藝指標(biāo)。原礦經(jīng)兩段連續(xù)磨礦, 二次溢流經(jīng)弱磁選和強(qiáng)磁選后,二者組成混磁精,混磁精反浮選得最終精礦;弱磁尾礦濃縮后,經(jīng)強(qiáng)磁機(jī)拋尾,強(qiáng)磁機(jī)尾礦和反浮選尾礦組成綜合尾礦。綜合選別指標(biāo)為鐵精礦品位67. 50% ,金屬回收率75. 00%。工藝流程見圖2。</p><p&g

8、t;　　圖2　調(diào)軍臺(tái)選礦廠紅鐵礦選礦工藝流程</p><p>　　(3)東鞍山燒結(jié)廠工藝流程及主要工藝指標(biāo)。</p><p>　　原礦經(jīng)兩段連續(xù)磨礦, 二次溢流經(jīng)水力旋流器輔助分級后, 粗粒產(chǎn)品由螺旋溜槽選別,細(xì)粒經(jīng)弱磁、強(qiáng)磁選別,混磁精反浮選。粗,細(xì)粒二者均產(chǎn)出最終精礦。重選精螺尾與中磁精再磨返回水力旋流器。掃中磁尾礦、強(qiáng)磁尾和反浮選尾礦合并為綜合尾礦。綜合別指標(biāo)為精礦品位64. 50%

9、 , 金屬回收率65. 00%。工藝流程見圖3。</p><p><b>　　3、工藝特點(diǎn)及分析</b></p><p>　　鞍山地區(qū)三大貧赤鐵礦選礦廠的選別流程之所以能夠獲得良好的技術(shù)指標(biāo),主要是有效地利用了礦物的磁性、密度、粒度等特征的差異,充分發(fā)揮各選別設(shè)備的特有作用,選用了性能良好的反浮選藥劑,實(shí)行多工藝聯(lián)合作業(yè)的結(jié)果。</p><p>

10、;　　(1)強(qiáng)磁機(jī)和掃中磁機(jī)的引入,穩(wěn)定了工藝流程,提高了分選效率。齊大山選礦廠和東鞍山選礦廠工藝改造后,流程中都采用了強(qiáng)磁機(jī)拋棄磁選尾礦,掃中磁機(jī)拋棄重選尾礦。實(shí)踐證明立環(huán)強(qiáng)磁機(jī)和掃中磁機(jī)具有工作穩(wěn)定,分選效率高,適應(yīng)性強(qiáng),不易堵塞等特點(diǎn)。其中立環(huán)強(qiáng)磁機(jī)不易堵塞的特點(diǎn)是平環(huán)強(qiáng)磁機(jī)無法比擬的。它能有效地拋棄大量合格尾礦,為下一段選別作業(yè)創(chuàng)造良好的條件,是一種高效率的粗選設(shè)備。</p><p>　　圖3　東鞍山燒結(jié)

11、廠紅鐵礦選礦工藝流程</p><p>　　(2)粗粒重選有利于鐵礦物的充分回收。重選具有不用藥劑,避免污染,結(jié)構(gòu)簡單,工作可靠,選別效率高等優(yōu)點(diǎn)。但它的最大缺點(diǎn)是回收細(xì)粒級礦物效率低,所以長期以來對細(xì)粒嵌布的礦石難以得到廣泛應(yīng)用。由于鞍山地區(qū)貧赤鐵礦嵌布的不均勻性,根據(jù)螺旋槽的技術(shù)特性,在齊大山選礦廠和東鞍山燒結(jié)廠都采用了螺旋流槽回收粗粒礦物,重選作業(yè)精礦品位達(dá)到65%,產(chǎn)率15%?？梢娭剡x作業(yè)在兩個(gè)選礦廠的工藝

12、流程中發(fā)揮了重要作用。</p><p>　　(3)陰離子反浮選工藝的特點(diǎn)。在鞍山地區(qū)3 個(gè)貧赤鐵礦選礦廠的工藝流程中,都采用了反浮選工藝。反浮選工藝條件為浮選溫度30℃, 浮選濃度33% ,礦漿pH = 11. 5; 浮選藥劑: pH 調(diào)整劑為NaOH, 抑制劑為淀粉, 活化劑為CaO, 捕收劑為RA715 (東鞍山燒結(jié)廠) 、RA515 (齊大山選礦廠) 、LKY(調(diào)軍臺(tái)選礦廠) 。反浮選工藝都采用一次粗選、一

13、次精選、三次掃選工藝。反浮選工藝條件比較適應(yīng)鞍山地區(qū)貧赤鐵礦的細(xì)粒嵌布及脈石礦物組成單一的特點(diǎn),該工藝確保了精礦品位的合格。</p><p>　　(4)齊大山選礦廠階段磨選和調(diào)軍臺(tái)選礦廠連續(xù)磨礦的流程對比。調(diào)軍臺(tái)選礦廠的弱磁- 強(qiáng)磁- 反浮選工藝,雖然充分利用了礦物的磁性,但它要求一段磨礦將礦石磨至- 200目占85%左右,這樣不僅增加了磨礦費(fèi)用,而且造成了礦石的過粉碎,降低了金屬的回收率。磨礦產(chǎn)品- 0. 01

14、0 mm 級別的產(chǎn)率高達(dá)30% ,而在尾礦中- 0. 010 mm 級別的流失占尾礦金屬的50% , 即有一半的金屬損失于- 0. 010 mm的細(xì)級別中?？梢娨M(jìn)一步提高金屬回收率,采取措施降低磨礦產(chǎn)品中- 0. 010 mm級別的含量,是十分重要的。根據(jù)齊大山鐵礦粒度嵌布的特點(diǎn),當(dāng)磨礦粒度為- 200目占55% ～ 60%時(shí), 鐵礦物的單體解離度達(dá)到65% ～ 70%,因此,礦石在粗磨的狀態(tài)下,即可回收相當(dāng)數(shù)量的鐵精礦,從而大大減少

15、進(jìn)入下一段再磨再選的礦量。因此說齊大山選礦廠階段磨選是合理的。從上述分析來看, 階段磨選適合分選鞍山地區(qū)的貧赤鐵礦石。</p><p><b>　　4、結(jié)　論</b></p><p>　　(1) 鞍山地區(qū)3個(gè)貧赤鐵礦選礦廠新工藝的生產(chǎn)實(shí)踐表明,指標(biāo)穩(wěn)定,取得了良好的技術(shù)經(jīng)濟(jì)效果,為貧赤鐵礦選礦找到了一條新的途徑。尤其是齊大山選礦廠和東鞍山燒結(jié)廠的粗細(xì)分選工藝能有效地發(fā)

16、揮重選和浮選工藝各自的優(yōu)勢,適應(yīng)了重選和浮選作業(yè)對給礦粒度的不同要求,實(shí)現(xiàn)了窄級別入選的合理分選過程,有利于提高選礦的分選指標(biāo)。</p><p>　　(2) 齊大山選礦廠和東鞍山燒結(jié)廠改造后采用的立環(huán)強(qiáng)磁機(jī)和掃中磁機(jī)經(jīng)生產(chǎn)實(shí)踐證明,其結(jié)構(gòu)簡單,工作可靠,操作方便,分選效率高。RA715捕收劑等藥劑在幾大選廠的成功應(yīng)用,說明藥劑具有良好的捕收性及選擇性,對于選別鞍山地區(qū)貧赤鐵礦有很強(qiáng)的適應(yīng)性。</p>

17、<p>　　(3) 調(diào)軍臺(tái)選礦廠為了進(jìn)一步提高分選效率, 必須采取有力措施,降低磨礦產(chǎn)品</p><p>　　- 0. 010 mm級別的生成量以及提高該級別的金屬回收率。</p><p><b>　　參考文獻(xiàn)</b></p><p>　　1、張宏柯, 李傳曾. MVS型電磁振動(dòng)高頻振網(wǎng)篩及其工業(yè)實(shí)踐(上) . 金屬礦山, 2004

18、 (1) : 35～ 38</p><p>　　2、田嘉印. 鐵礦山選礦技術(shù)發(fā)展現(xiàn)狀及今后應(yīng)加強(qiáng)的工作. 金屬礦山, 2004 (2) : 27～ 31</p><p><b>　　英文翻譯：</b></p><p>　　New Advance in Dressing Process for Lean Hema tite in An shan

19、D istr ict</p><p>　　reverse flotation</p><p>　　Abstract　Based on the introduction of the technological p rocesses and indexes of the three large lean hematite con2 centrators in Anshan District,

20、 the characters and p roblems in the p rocess of the three concentrators are analyzed. It consid2 ers that use of the high intensity magnetic separator and the medium intensity magnetic separator for scavenging stabilize

21、s the p rocess and increases separation efficiency. The gravity separation of coarse ores is favorable for sufficient recovery of i2 </p><p>　　Keywords　Lean hematite, High intensity magnetic separation, Medi

22、um intensity field; Gravity separation, Anionic</p><p>　　In recent years, due to surge in demand for steel products, iron ore resources has become more important, China's iron ore resources are very rich

23、, but difficult to choose the large proportion of poor hematite. Anshan Iron and Steel is an important iron and steel industrial base, with ongoing large-scale industrial mining, poor hematite ore production will account

24、 for more than 50% of total production. Anshan Anshan Mining Company is the main supply base of iron ore, iron ore production was main</p><p>　　Anshan area in recent years for the three poor hematite mineral

25、 processing plant, which Qidashan concentrator, Diaojuntai Concentrator, Donganshan sintering plant beneficiation tests carried out research, which align the mountains concentrator and sintering plant were Donganshan lar

26、ge-scale transformation to make the new process implemented poor hematite. Qidashan concentrator using grinding stage election re-election - magnetic separation - anti-flotation process, Diaojuntai concentrator with c<

27、;/p><p>　　1、 ore characteristics</p><p>　　Poor Anshan hematite to hematite and hematite illusion. Belong to the pre-Sinian metamorphic sedimentary magnetite or hematite quartz - magnetite quartzite

28、, ore Heavy, abundant, deeper level of surface oxidation, and the gradual transition to magnetite in deep. The chemical composition of ore is very simple, the main elements of iron and silicon, and other harmful impuriti

29、es little ore grade generally between 25% and 30% of the changes is a high silicon low parathion poor hematite magnetite quar</p><p>　　2、 process and sorting index(1) Qidashan Dressing Plant and process cri

30、teria.Grade ore, after a period of grinding, a run-off by the thickness of hydrocyclone classification, coarse product from the spiral chute handle, fine by weak magnetic, strong magnetic do, mixed magnetic fine reverse

31、 flotation. Coarse, fine they both output the final concentrate. Precision screw tail and re-election sweep by sweeping the magnetic screw fine after the scan in the magnetic fine regrinding return hydrocyclo</p>

32、<p>　　Figure 1 Qidashan red iron ore concentrator process</p><p>　　(2) Diaojuntai Concentrator process and process criteria. After two consecutive grinding ore, the second run-off by the weak and strong

33、 magnetic magnetic separation, the two mixed magnetic fine form, mixed magnetic fine was ultimately anti-flotation concentrates; weak magnetic tailings concentrated by magnetic machine throwing tail, magnetic machines an

34、d anti-flotation tailings tailings tailings to form integrated. Integrated sorting index of iron concentrate grade 67.50%, metal recovery 75.00%.</p><p>　　Figure 2 Diaojuntai Concentrator process of red iron

35、 ore</p><p>　　(3) Donganshan sintering plant process and its key process indicators.After two consecutive grinding ore, the second hydrocyclone overflow by the secondary classification, the coarse product f

36、rom the spiral chute, sorting, fine-grained by the weak magnetic, strong magnetic do, mixed magnetic precision anti-flotation. Coarse, fine they both output the final concentrate. Precision screw tail re-election and ret

37、urn of magnetic fine regrinding hydrocyclone. Sweep the magnetic tailings, magnetic tai</p><p>　　3, features and analysis technologyAnshan district three poor hematite concentrator sorting Liu Cheng was abl

38、e to get a good technical indicators, mainly the effective use of mineral magnetic, density, size and other characteristics of the difference, give play to the unique separation equipment the role of the good performance

39、 of selected anti-flotation agent, the multi-process the results of joint operations.</p><p>　　(1) magnetic machine and scan the introduction of magnetic machine, stability of the process, improve the separa

40、tion efficiency. Qidashan Donganshan concentrator concentrator and process reform, the process is abandoned by a magnetic separator tailings machine, sweeping the magnetic re-election machine abandoned tailings. Proved v

41、ertical circular magnetic machine and scan the magnetic machine has advantages of stable, high separation efficiency, adaptability, easy plug and so on. Central magneti</p><p>　　(2) coarse-grained re-electio

42、n favor the full recovery of iron minerals. Re-election with no agent, to avoid contamination, simple structure, reliable operation, the sorting efficiency. But its biggest drawback is the low efficiency of recovery of f

43、ine grade mineral, it has long been embedded on the fine cloth of ore difficult to be widely applied. Poor hematite as Anshan inhomogeneity embedded in cloth, according to the technical characteristics of spiral groove i

44、n Qidashan concentrator and sin</p><p>　　(3) the characteristics of anionic anti-flotation process. In the Anshan area three poor Concentrator process in hematite, have adopted anti-flotation process. Anti-f

45、lotation flotation process conditions at 30 ℃, 33% of flotation concentration, pulp pH = 11. 5; flotation reagent: pH adjusting agent is NaOH, inhibitors of starch, active agent for the CaO, collector for the RA715 (Dong

46、anshan sintering plant), RA515 (Qidashan Concentrator), LKY (Diaojuntai Concentrator). Anti-flotation process have</p><p>　　Figure 3 Donganshan red iron ore sintering plant process</p><p>　　(4)

47、grinding Qidashan concentrator stage selection and Diaojuntai Concentrator Comparison of continuous grinding process. Diaojuntai Concentrator weak magnetic - magnetic - anti-flotation process, although the full use of ma

48、gnetic minerals, but it requires some grinding, grinding ore to - 200 mesh is about 85%, so not only increases the cost of grinding and caused over crushed ore, reducing the metal recovery. Grinding minerals - 0. 010 mm

49、level of the yield up to 30% in the tailings - 0. 010 mm</p><p>　　4, Conclusions (1) Anshan area three poor hematite mineral processing plant production practice of new technology that targets stability, an

50、d achieved good technical and economic effect, for the poor hematite mineral found a new way. Particularly Qidashan concentrator and sintering plant weight Donganshan separation process can effectively re-election and th

51、e flotation process to play their respective advantages and meet the re-election and flotation to the mining operations on the size of the </p><p>　　References1, Zhang Hongke, Li Chuan has. MVS electromagne

52、tic High Frequency Vibrating Screen and industrial practice (on). Metal Mines, 2004 (1): 35 ~ 382, Tian Jia and India. Iron Mining Beneficiation Technology Status and future work should be strengthened. Metal Mines, 200