8万吨标准硫精矿选矿厂可研报告1

1、live in the mountains of the eastern usa speak with an older kind of english dialect. when americans moved from one place to another, they took their dialects with them. so people from the mountains in the southeastern usa speak with almost the same dialects as people in the northwestern usa. the us

2、a is a large country in which many different dialects are spoken. although many americans move a lot, they still recognize and understand each others dialects.the oxford english dictionaryyou may think that english dictionaries have been used for many, many centuries. the spelling of english has alw

3、ays been a problem but it was more of a problem in the days before a dictionary. then people could spell word in different ways which you might find it interesting. but it made reading english much more difficult. so dictionaries were invented to encourage everybody to spell the same. in fact, an en

4、glish dictionary like the kind you use today wasnt made until the time of the late qing dynasty. there men did most of the important early work on dictionaries: samuel johnson, noah webster, and james murray. these men spent nearly all of their lives trying to collect words for their dictionaries. f

5、or them, it wasnt only a job; it was a wonderful journey of discovery. the largest dictionary in the world is the oxford english dictionary, or oed for short. the idea for this dictionary came from an important meeting in britain in 1857. twenty-two years later, oxford university asked james murray

6、to be the editor of its new dictionary. murray had never been to college. at the age of fourteen, he left his village school in scotland and taught himself while working in a bank. later he became a great teacher. after oxford gave him the job, murray had a place built in the garden behind his house

7、 to do his work. part of it was one meter underground. in winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. every morning, murray got out of bed at five oclock and worked several hours before breakfast. often he would work by the candle light into the ev

8、ening. murray hoped to finish the new dictionary in ten years. but after five years, he was still adding words for the letter a! then others went to work with murray, including his two daughters. he worked on the dictionary until he was very old. forty-four years later, in1928, other editors finishe

9、d it. it included more than 15,000 pages in twelve books. and you thought your dictionary was big!unit 3journey down the mekongpart 1 the dream and the planmy name is wang kun. ever since middle school, my sister wang wei and i have dreamed about taking a great bike trip. two years ago she bought an

10、 expensive mountain bike and then she persuaded me to buy one. last year, she visited our cousins, dao wei and yu hang at their college in kunming. they are dai and grew up in western yunnan province near the lancang river, the chinese part of the river that is called the mekong river in other count

11、ries. wang wei soon got them interested in cycling too. after graduating from college.we finally got the chance to take a bike trip. i asked my sister, where are we going? it was my sister who first had the idea to cycle along the entire mekong river from where it begins to where it ends. now she is

12、 planning our schedule for the trip. i am fond of my sister but she has one serious shortcoming. she can be really stubborn. although she didnt know the best way of getting to places, she insisted that she organize the trip properly. now, i know that the proper way is always her way. i kept asking h

13、er, when are we leaving and when are we coming back? i asked her whether she had looked at a map yet. of course, she hadnt; my sister doesnt care about details. so i told her that the source of the mekong is in qinghai province. she gave me a determined lookthe kind that said she would not change he

14、r mind. when i told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be excited about it. when i told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. i know my sister well. once she has made up he

15、r mind, nothing can change it. finally, i had to give in. several months before our trip,wang wei and i went to the library. we found a large atlas with good maps that showed details of world geography. from the atlas we could see that the mekong river begins in a glacier on a tibetan mountain. at f

16、irst the river is small and the water is clear and cold. then it begins to move quickly. it becomes rapids as it passes through deep valleys, travelling across western yunnan province. sometimes the river becomes a waterfall and enters wide valleys. we were both surprised to learn that half of the r

17、iver is in china. after it leaves china and the high altitude,the mekong becomes wide，brown and warm. as it enters southeast asia, its pace slows. it makes wide bends or meanders through low valleys to the plains where rice grows. at last, the river delta enters the south china sea.part2 a night in

18、the mountainsalthough it was autumn,the snow was already beginning to fall in tibet.our legs were so heavy and cold that they felt like blocks of ice.have you ever seen snowmen ride bicycles?thats what we looked like! along the way children dressed in long wool coats stopped to look at us.in the lat

19、e afternoon we found it was so cold that our water bottles froze.however,the lakes shonelike glass in the setting sun and looked wonderful.wangwei rode in front of me as usual.she is very reliable and i knew i didnt need to encourage her. to climb the mountains was hard work but as we looked around

20、us, we were surprised by the view. we seemed to be able to see for miles. at one point we were so high that we found ourselves cycling through clouds. then we began going down the hills. it was great fun especially as it gradually became much warmer. in the valleys colourful butterflies flew around

21、us and we saw many yaks and sheep eating green grass. at this point we had to change our caps, coats,gloves and trousers for t-shirts and shorts. in the early evening we always stop to make camp.we put up our tent and then we eat. after supper wang wei put her head down on her pillow and went to sle

22、ep but i stayed awake. at midnight the sky became clearer and the stars grew brighter. it was so quiet. there was almost no windonly the flames of our fire for company. as i lay beneath the stars i thought about how far we had already travelled. we will reach dali in yunnan province soon, where our

23、cousins dao wei and yu hang will join us. we can hardly wait to see them!part 6 the end of our jouneycambodia was in many ways similar to laos, although it has twice the population. at another inn, we talked with a teacher who told us that half of the people in her country couldnt read or write. her

24、 village couldnt even afford to build a school, so she had to teach outside under a large tent. when we said goodbye, we all felt very lucky to have studied in college.back on the road, we passed between many hills and forests. then we came to the plains and entered phnom penh,the capital of cambodi

25、a. in many ways it looked like vientiane and ho chi minh city; it also had wide streets with trees in rows and old french houses.unlike vientiane, ships could travel the mekong river here.in the center of the city we visited the palace and a beautiful white elephant. it can only be seen outside the

26、palace on special days. we ate an early supper and went to see a great temple with floors made of sliver.the next morning our group slept late. we were very tired from the long bike ride the day before.年产8万吨标准硫精矿选矿厂浮选工艺技术项目建议书2011年3月28日一、总论（一）、项目经营单位及法人代表项目名称：遵义县团溪采选厂主办单位：遵义县综合化肥厂主管部门：遵义县团溪镇企管站经营性质：

27、民营企业经营范围：硫铁矿采选加工，其它有用物的回收加工、销售项目负责人：（二）、项目提出的依据：1、贵州省遵义县境内有丰富的硫铁矿资源，综合化肥厂现已建成投产一组年产8万吨的硫酸生产线，年需8万吨标准硫精矿。2、根据国内铁矿资源的富矿逐年递减和钢铁产量的大幅增长，国内铁矿石（富矿）及铁精矿的总量根本无法满足，相当一部分需要从国外进口，造成铁矿石产品的价格增长幅度较大，这以保证本项目考虑硫精矿脱硫后尾渣合理的增值使用问题，从而提高资源的有效利用。3、根据资源、开采、环保、运输等综合条件，经初步技术经济比较后，选择团溪镇川主庙一带建设一座硫铁矿浮选厂，将所在区域及周边的硫铁矿集中处理，其优点是：储

28、量大、矿层和原矿品位稳定，交通方便，尾矿存放条件好等。但也有不利因素，该区域直径3公里范围内水资源紧张，要到距离4公里外的茅栗镇取水生产，供水成本高。为提高供矿质量和满足8万吨硫酸厂的生产需要，按团溪镇境内硫铁矿的储矿条件，选择一个年产57731.96 t，含硫达48.5%的浮选厂。原矿能力达262664.17 t/年的采选联合企业，同时做好外购矿的工作，最大限度满足生产需求。二、资源概况矿石嵌布特性：黄铁矿多呈浸染状，星散分布，晶体不规则，晶形很小，主要分布在细粒石英岩中，同时与云母胶结在一起。浸染状黄铁矿最大粒度1.52mm，最小为0.005mm以下，呈粒状及块状分布的黄铁矿易选，呈散点状

29、和乳浊状分布的较难选。脉石矿物如粘土质的绢云母，高岭土等影响分选指标。入选原矿水分8%，含泥7%。普氏硬度：致密块状黄铁矿f=1012，细粒松散状黄铁矿f=12。浸染状的黄铁矿f=34，矿石密度2.62.8t/m3，松散密度1.65 t/m3。矿石多元素分析见表11元素sssio2feal2o3k2ona2oppbznmncaoasmgof含量%11.9735.6510.3227.414.920.06微量微量微量微量0.64微量0.88团溪所划定铝土矿采矿区域为12km2，大概分为4个点，同时还有23个硫铁矿点，将铝土矿剥离后，硫铁矿暴露在地表，其可采厚度35米不等。初步估算储量应大于1千万吨

30、以上，综合品位13%，有害杂质除k2o外，均不超过控制指标，由回收价值的有用物分别为铝土矿27.04%，k2o 14.92%，锐钛矿、钙钛矿 20.4%，但此类矿物还需要进一步独立分析和选矿试验方能确认，难度较大。由于该体系的硫铁矿结晶状况复杂，而要求精矿合格品位达48.5%以上才能满足62%含铁尾渣的质量标准，同时还要将回收率控制在82%以上。针对以上指标要求，选矿过程必须做到以下几点方能完成：（1）有足够细的磨矿细度，-200目80%；（2）有足够的浮选时间，选别时间应控制在2528分钟；（3）由合理的选别流程，一粗三精二扫；（4）有一个合理的药剂制度（需通过选矿试验来完成和指导今后工作）

31、；（5）由一支优秀的职工队伍，尤其是球磨、浮选工；（6）建立和健全一套完整的管理体系。三、产品方案及生产规模（一）、根据现有硫酸厂的生产规模及指标要求，作物料平衡计算如下：62%含铁所需矿量，硫精矿品位，折标硫重量，炉渣量（铁产品）计算：设：回收率82% 原矿品位13.0%1、62%含铁所需硫精矿品位：磁铁矿的fe：o=（563）(164)=16864=2.63硫铁矿铁硫比=46.653.4=0.87266（1）设定硫精矿品位在47%时的炉渣fe含量含全铁47%0.87266=41%无用物（杂质）=100%88%=12%吸氧量=4102.63=155.89铁品位=410（410+155.89+

32、120）=59.78%（2）设定硫精矿品位在48.5%时的炉渣fe含量含全铁48.5%0.87266=42.324%无用物（杂质）=100%（42.324%+48.5%）=9.176%吸氧量=423.242.63=160.93铁品位=423.24（423.24+160.93+91.76）=62.1%当硫精矿达到48.5%时，经脱硫后的炉渣含铁品位为62.1%2、所需标硫量80000吨以48.5%折标硫精矿量80000（35%48.5%）=57731.96 t3、所需原矿量q原=57731.9648.5%82%13%=262664.17 t/年4、62%含铁炉渣总量吨48.5%硫精矿脱硫后的炉渣

33、量0.42324+0.16093+0.09176=0.67593 tq铁=57731.960.67593=39022.76 t（二）、产品方案：主要产品：硫精矿产量：生产48.5%硫精矿57731.96 t/年，折算35%标准硫80000 t副产品：铝土矿等1、按下工序对硫精矿的要求，达国家优质二级以上。s48.5%，as0.05%，f0.05%，pb+zn0.5%，c1%，粒度-200目70%。2、按下工序要求，水分严格控制在7%以下。（三）、按团溪硫铁矿储矿条件，供矿能力应确定在265000t/年，选厂选矿处理能力设计大于263000t/年，处理原矿品位：含硫13%以上，以13%作可行性研

34、究的基础数据。四、工艺流程及主要设备选择（一）、供矿由于自有矿山目前还未具备大规模采矿条件，无法满足选厂规模化生产，这就要求在选厂建厂期间加快铝土矿的采矿速度，在选厂投产期力争完成选厂供矿能力的70%，即每天620 t/日，剩余的260 t/日则采取收购民矿以补充生产不足，收购品位以控制在16%以上最佳，待矿山采矿能力增大后，逐步降低收购比例。（二）、选矿1、本方案选厂厂址选择在团溪镇川主庙一带，规模定为日处理矿石能力883吨；年处理原矿能力265000吨，年产48.5%硫精矿57731.96吨，折标硫80000吨，可满足自备硫酸厂满负荷生产。2、原矿类型：该区域黄铁矿在深灰、灰、灰绿、灰黄色

35、粘土岩中以粉晶细晶巨晶形态产出，含量低时呈分散状、浸染状产出，结晶粒度变化大，对回收率的提高有较大影响。硫铁矿出露地表时，自然氧化速度很快，开采、选成精矿后，不宜久留不用，以免硫份流失。因此，产品产量及生产能力以下工序生产需求量为准而调节生产。3、选矿工艺流程及指标。在考虑对比国内同类型采选厂和外检原矿元素分析后，本报告推荐单一浮游选矿法，考虑下一步有可能回收其它有用物，设计时建议预留场地以满足今后改扩建用地。（1） 破碎与磨矿：为有效降低生产成本和保证产品质量要求，满足生产平稳运行，设计选用日处理能力大于1200吨的pe400600颚式破碎机（粗中碎）一台，最大给矿粒度-300mm，最最大排

36、矿粒度-80mm，破碎比3.75；选用pex2501200颚式破碎机一台（细碎），最大给矿粒度-80mm最大排矿粒度-25mm，破碎比3.2.考虑原矿含泥量、含水量（露开采）较大，容易造成给矿堵塞，建议粗碎给矿选用9801240槽式给机，整个破碎流程设计为开路破碎流程。根据所处理矿的原矿特性和产品质量要求，结合多家选厂生产所用设备的实际生产情况和自营矿山的供矿能力，建议采用两台gm21003000格子型球磨机和两台flg-20高堰式单螺旋分级机配套形成闭路磨矿使用，生产能力可达900t/d。此配置的最大优点是：1）、矿量在一定阶段内无法满足设计生产能力时，可单机运行，单机最大处理能力达450

37、t/d。当原矿供应在一定条件下（一段时间内）能满足设计或大于设计能力时，则2台主机同时运行，灵活性强，操作人员不增。2）、设备最重部件13.77吨，总重45.47吨，便于运输和安装检修。3）、两台球磨和分级设备总功率：1802+152+32=396kw，比选用27003600球磨机和一台2000双螺旋分级机的使用功率降低380+152+32=416 kw，降低30kw。缺点：多增加一组给料系统和两台搅拌筒，设备购置费用提高，场地使用面积增加100m2，左右，管路布置相对复杂。原则流程如下： （2）选别：由于该矿物硫铁矿结晶粒度很细，入选粒度设计控制在-200目80%，使单体分离达到95%以上，

38、浮选时间控制在25-28分钟。建议采用一粗三精二扫浮选流程，确保硫精矿48.5%，回收率82%，有望达到85%。（3）精矿脱水：该产物的粒度很细，-200目含量达到80%，自然滤水效果不佳，同时还要考虑制酸入炉小于7%的水分要求与产品运输的车辆安全，建议选用nz-15中心传动浓缩机第一次脱水，选gw-20型圆筒外滤式过滤机或一台盘式27-39m2真空过滤机一台作最终脱水，确保水分8%（亦可考虑精矿自然脱水，降低成本）。（4）尾矿：由于生产规模属中型企业，服务年限一般为2025年，选择一个库容大于200万立方米的沟谷或坑（洼）地即可。如进一步考虑尾矿中有用物的回收利用，川主庙处的尾矿库服务年限有

39、望突破30年以上。（三）、选厂规模、产率、工艺指标、工作制度 选厂规模及生产率：项目产品名称处理量品位含硫%产率%品级粒级mm杂质含量不大于（%）浓度%t/d万吨/aasfpbznc浮选原矿876.726.313.0100-300含水5%硫精矿192.695.78148.521.98优二级-0.10.070.051.001.5含水8%尾矿684.0120.5193.078.02-0.125选厂工作制度：车间名称d/a班/dh/班备 注破碎车间30028只开白、中班浮 选30038精矿脱水30038选矿工艺指标：指标名称原 矿精 矿尾 矿备 注品位（%）13.048.53理论回收率（%）1008

40、218产率（%）10021.9878.02选矿比（倍）4.55富集比（倍）3.73浓度（%）含水5含水825（四）、辅助设施（1）、维修起重：为节省构筑物及行车的投资，选厂所有设备维修起重均考虑为临时架三角木或千斤顶解决。（2）、矿仓：1）.原矿仓考虑一个100-150吨缓冲仓，用来调节破碎系统的连续作业；如坡度和高差合适，仓顶接斜坡卸矿道以增加矿仓容积。2）.粉矿仓设计储矿能力为350吨，有效容积240-250m3,主要考虑原矿不能均衡供给和破碎设两班而设置。3）.精矿过滤存放：因浮选的硫精矿经真空过滤机脱水处理后的即为合格精矿，只需用铲车转运到规定场地堆放即可。4）.试（化）验室：为满足原

41、矿进库，生产技术指标监控，原矿性质变化试验的需要，利用当地现有一座小学教学楼（租用）稍加改造，根据试（化）验室所需设备，仪器进行布置、完善，即可起到技术监督和有用矿物选矿试验的职能。（五）、尾矿设施所选厂址有一个近200万立方米的自坑（洼）地，尾矿排放的自然条件较好，考虑当地水源紧张，供水成本高，建议在尾矿库来投入使用之前认真做好查漏堵漏工作，最大限度利用回水，从而达到降低用水成本的目的。（六）、选矿厂部分投资估算，见表：投资概算表（浮选部分）序号项目名称单位工程量功率（kw）投资额（万元）备注一设备部分1pe400600颚式破碎机台1305.8粗、中碎2pex2501200颚式破碎机台145

42、8.5细 碎3cg1240980槽式给矿机台17.52.546505000皮带给矿机台15.52.0565010000皮带运输机台17.53.0665020000皮带运输机台111.04.57摆式给矿机600600台21.521.02821003000格子型球磨机台218024429flg2000高堰式单螺旋分级机台215218210rj2000搅拌槽台45.54 2.5411rjw1000药剂搅拌槽台21.521.25212bf-4型浮选机槽2015202.72013 nz-15中心传动浓缩机台15.52014gp-27或gp-39盘式过滤机套1372515主水泵台25521.521开1备1

43、6辅助水泵及砂泵台240、151.5尾矿澄清水回用；尾砂输送用。17变压器台11000kva2618100吨地中衡台1619 铲车台127转运原矿，硫精矿专用20交通工具辆220外出、采购专用21试（化）验室套18包括仪器、用具、设备、药剂等22运费6%21.31823安装费6%21.318合 计功率1032kw投资额397.936万元二非标设备制作与安装1方格筛m2160.84 筛孔300300mm,15kg/m轨道钢2破碎机给矿斗、排料斗个40.528用10mm钢板制作34寸管米450027供排水用44寸、3寸、2寸、1寸管米3505.0供排水用5各类管件、阀门等个3503.0所有供排水管

44、路安装用6皮带运输机下料斗、反砂槽个5 0.667其它制作3合 计功率0投资额13.03万元三电器部分1低压主控柜台33.02主水泵控制系统套10.63砂泵、水泵、破碎、运输套62.44各种低压供电线路8合 计功率0投资额14万元四土建、构筑物、道路等工程1原矿料场m2200050402主水池m31050141553破碎厂房m21002054皮带运输机走廊m244.8162.85 粉矿仓m322066126原矿仓m3607磨矿厂房m23501612包括配电库8浮选厂房m236032119磅房m26087.510水泵房m2205411浓缩池m36367.57.53.143.612合格精矿堆放库m

45、2600302013厕所m21562.5 两间14保管室、药剂库m210818615生活水池m33244216道路平整m24000厂区17尾矿库m318配电房m2124319过滤厂房m27212620精矿沉淀池m26754515合 计功率0投资额0五工具机物料1电焊机台21.02氧气、乙炔、割具套20.43胶轮车辆40.154大锤（12磅）把60.035铁铲把200.0365吨、3吨、1.5吨葫芦个60.40各2个750吨、20吨千斤顶个20.208钢球吨50309其它多种小型工具1.0合 计功率0投资额33.21万元六办公用品及其它1办公桌、椅套120.62保险柜、文件柜个60.53炊具套1

46、0.74床张300.805沙发等套30.66电脑台42.5其中财务专用电脑1.7万元左右7其它1.0合 计功率0投资额6.7万元总 计功率1032kw投资额464.876万元（七）、选厂物料消耗及实物劳动生产率（浮选部分）见下表：序号指标名称单 位指 标备 注1水吨/吨42电kwh/吨20.03钢球kg/吨1.54药剂kg/吨0.1005药剂kg/吨0.0406药剂kg/吨8.07工人实物劳动生产率吨/人.年9068.97按29人计8全员劳动生产率吨/人.年6261.91按42人计五、供排水1、供水方案 从表中看出，浮选吨耗水一般在4吨左右波动，本设计的选矿厂每小时耗水876.7244146.

47、1吨，日耗水146.1243506吨，则年耗水总量146.124300=1051920吨。 从计算数据得知，浮选年耗水总量105.2万吨，靠周边水源无法满足生产，也不允许与农业及人畜饮水发生冲突，这就要求最大限度的作好回水利用工程，力争达到70-80%，有效解决供水困难及降低用水成本。2、选别后的尾矿排出对水质影响极小，呈微酸性，无重金属和有毒物质，所有药剂主要起捕收、起泡、ph值调节，易水解作用，可供农田灌溉、养鱼、选厂回水利用，同时可降低药剂消耗10-20%。六、总图运输及建设条件1、厂址选择 厂址选择必须满足下列要求：a、有足够大的尾矿库，尾矿能自流排放最佳；b、主厂房要求纵向长75-8

48、5米，横向宽50-60米，纵向中心线坡度240-260，相对高差35-38米，生产流程自流条件最为理想；c、各矿点原矿运输距离最小，无反向运输（包括产品输出）；d、离水源（能满足生产用水）要近，扬程不宜过高，否则会增大供水成本；e、交通方便，离公路要近，太远则会增大投资费用；f、供电外线必须在合适距离内解决。2、运输条件 在满足厂址选址的前提下，建议认真考虑原矿输入及产品输出的运输成本，选择得当，则会降低上百万的运输成本。3、行政福利设施 本项目定员47-50人，职工住房、办公楼、试验室、化验室、食堂，利用当地一闲置小学租凭解决，减少前期投入。4、环境保护 选矿工艺为浮选，每年排放矿浆100-

49、120万吨，其中固体物排放量为20.519万吨，尾矿主要含铝土矿、石英、云母、方解石及微量金属矿和黄铁矿等物质，粒度在0.15mm以下，渗出或溶出的尾矿水经沉降后为澄清水，80%可作回水利用，20%左右的水会经库底渗漏和自然挥发而损失，对环境不会造成影响。5、生产组织及人员安排（1）选厂工作制度为300天，采用三班倒连续工作制，职工休息利用无矿停机调整即可。（2）职工组织及培训：该厂高层管理人员由投资方直接聘用，其他人员则由该厂在当地招用。 硫铁矿为化工原料，属易选矿物，所用设备和工艺较为简单，可参照相同企业的操作程序、技术标准、安全等对职工进行培训，使之掌握合格技能后方可上岗。（3）劳动定员

50、工 种定 员工 种定 员工 种定 员工 种定 员厂长1材料兼保管1计量工2磨矿3生产副厂长1化验2铲车2取样3总工程师1生产调度、安全、材料采购、机动2电钳工3选矿3办公室主任1炊事员2块矿处理4精矿处理工3会计1驾驶员2破碎4药剂工3出纳1水泵工2合计47人 17live in the mountains of the eastern usa speak with an older kind of english dialect. when americans moved from one place to another, they took their dialects with the

51、m. so people from the mountains in the southeastern usa speak with almost the same dialects as people in the northwestern usa. the usa is a large country in which many different dialects are spoken. although many americans move a lot, they still recognize and understand each others dialects.the oxfo

52、rd english dictionaryyou may think that english dictionaries have been used for many, many centuries. the spelling of english has always been a problem but it was more of a problem in the days before a dictionary. then people could spell word in different ways which you might find it interesting. bu

53、t it made reading english much more difficult. so dictionaries were invented to encourage everybody to spell the same. in fact, an english dictionary like the kind you use today wasnt made until the time of the late qing dynasty. there men did most of the important early work on dictionaries: samuel johnson, noah webste