一种钼矿石的浮选分离试验研究
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摘要
本文针对西丰县凌云矿业公司提供的两个钼矿石样品进行了系统的试验研究,主要目的是确定合适的选矿工艺流程及药剂制度,以获得满足精矿品位和金属回收率要求的合格精矿。
化验分析结果表明,两个矿石样品中Al_2O_3的含量均比较高,且具有回收价值的都仅有钼一种金属;矿石中的钼均以辉钼矿的形式存在,其含量分别为0.16%和0.72%。
本文首先对两个矿石样品分别进行了探索试验,然后进行了按比例混合探索试验。最终确定两个矿样按3∶7的比例混合进行试验。对混合矿样进行了一系列的浮选分离试验研究,确定了较为适宜的浮选流程、工艺条件、药剂制度。
试验研究结果表明,在一次磨矿细度为-0.071mm含量为60%、粗选后再磨细度为-0.071mm含量为94%、水玻璃用量为2000g/t、粗选煤油用量为185g/t、2号油用量为62.5g/t、粗选时间为7min、一次精选时间为3min、二次精选时间为2min、三次精选时间为1min、扫选煤油用量为50g/t、2号油用量为20g/t、扫选时间为6min的条件下,可以获得钼品位为45.25%、钼回收率为93.56%的精矿。
由于矿石中Al_2O_3的含量比较高,在磨矿过程中加入了大量的水玻璃作为分散剂,使得尾矿中的微细颗粒不易沉淀。因此本文还进行了加快尾矿沉降速度和澄清水循环利用的试验研究,发现通过添加絮凝剂PAM(用量为30g/t)和CaO(用量为1000g/t),可以明显加快微细颗粒的沉降速度,降低澄清水的浊度。
Experimental research is carried out systemically in this paper to separate two different molybdenum ore samples provided by Lingyun mining company, Xifeng County. It is mainly aimed to determine suitable mineral processing flow and reagent system in order to obtain qualified concentrate that can meet the requests of grade and recovery.
The result of chemical analysis showed that the contents of Al_2O_3 in both of the two ores are higer, and only molybdenum is the valuable metal to recover; both of them are molybdenite, and the molybdenum grade of these two ores are 0.16% and 0.72% respectively.
In this paper, explorative experiment of these two different ores were firstly carried out respectively, then they were mixed in some proportion, and the experiment was carried out with the ratio of 3 to 7 finally. We have performed a series of floatation experiments with the purpose of determining the appropriate flotation flow, technologcial conditions and reagent system.
The results showed that a concentrate of grade 45.25% and recovery 93.56% is obtained in the condation as the following: the first grinding size is 60% -0.071mm, regrinding size is 94% -0.071mm, the dosage of water glass is 2000g/t, the dosage of kerosene in roughing is 185g/t and in scavenger is 50g/t, the dosage of foamer in rougher is 62.5g/t and in scavenger is 20g/t. the flotation time of rougher is 7min, the flotation time of first cleaner is 3min, the second cleaner is 2min and the third is 1min, and the flotation time of scavenger is 6min.
Because there are much Al_2O_3, so we use a lot of water glass as dispersant during grinding. It makes very difficult for the subparticle of the tailing to precipitate, so we studied how to fastening the sedimentation speed of tailings and the reuse of the primary water. Through the study, when PAM was used as the flocculating agent with the dosage of 30g/t and CaO as the regulator with the dosage of 1000g/t, the subparticle can settle quickly and the turbidity of the primary water is reduced obviously.
化验分析结果表明,两个矿石样品中Al_2O_3的含量均比较高,且具有回收价值的都仅有钼一种金属;矿石中的钼均以辉钼矿的形式存在,其含量分别为0.16%和0.72%。
本文首先对两个矿石样品分别进行了探索试验,然后进行了按比例混合探索试验。最终确定两个矿样按3∶7的比例混合进行试验。对混合矿样进行了一系列的浮选分离试验研究,确定了较为适宜的浮选流程、工艺条件、药剂制度。
试验研究结果表明,在一次磨矿细度为-0.071mm含量为60%、粗选后再磨细度为-0.071mm含量为94%、水玻璃用量为2000g/t、粗选煤油用量为185g/t、2号油用量为62.5g/t、粗选时间为7min、一次精选时间为3min、二次精选时间为2min、三次精选时间为1min、扫选煤油用量为50g/t、2号油用量为20g/t、扫选时间为6min的条件下,可以获得钼品位为45.25%、钼回收率为93.56%的精矿。
由于矿石中Al_2O_3的含量比较高,在磨矿过程中加入了大量的水玻璃作为分散剂,使得尾矿中的微细颗粒不易沉淀。因此本文还进行了加快尾矿沉降速度和澄清水循环利用的试验研究,发现通过添加絮凝剂PAM(用量为30g/t)和CaO(用量为1000g/t),可以明显加快微细颗粒的沉降速度,降低澄清水的浊度。
Experimental research is carried out systemically in this paper to separate two different molybdenum ore samples provided by Lingyun mining company, Xifeng County. It is mainly aimed to determine suitable mineral processing flow and reagent system in order to obtain qualified concentrate that can meet the requests of grade and recovery.
The result of chemical analysis showed that the contents of Al_2O_3 in both of the two ores are higer, and only molybdenum is the valuable metal to recover; both of them are molybdenite, and the molybdenum grade of these two ores are 0.16% and 0.72% respectively.
In this paper, explorative experiment of these two different ores were firstly carried out respectively, then they were mixed in some proportion, and the experiment was carried out with the ratio of 3 to 7 finally. We have performed a series of floatation experiments with the purpose of determining the appropriate flotation flow, technologcial conditions and reagent system.
The results showed that a concentrate of grade 45.25% and recovery 93.56% is obtained in the condation as the following: the first grinding size is 60% -0.071mm, regrinding size is 94% -0.071mm, the dosage of water glass is 2000g/t, the dosage of kerosene in roughing is 185g/t and in scavenger is 50g/t, the dosage of foamer in rougher is 62.5g/t and in scavenger is 20g/t. the flotation time of rougher is 7min, the flotation time of first cleaner is 3min, the second cleaner is 2min and the third is 1min, and the flotation time of scavenger is 6min.
Because there are much Al_2O_3, so we use a lot of water glass as dispersant during grinding. It makes very difficult for the subparticle of the tailing to precipitate, so we studied how to fastening the sedimentation speed of tailings and the reuse of the primary water. Through the study, when PAM was used as the flocculating agent with the dosage of 30g/t and CaO as the regulator with the dosage of 1000g/t, the subparticle can settle quickly and the turbidity of the primary water is reduced obviously.
引文
1.刘浩元,王安民.钼矿床工业分类实例[J],中国钼业,1999,6(23)
2.张文钲.世界钼业20年[J],中国钼业,1997,6(21)
3.张文钲.21世纪的钼化学产品[J],中国钼业,2000,2(24)
4.林春元,程秀俭.钼矿选矿与深加工[M],冶金工业出版社,1997
5.杨敏郂.钼科技发展进步研究[J],中国钼业,1996,12(20)
6.徐志昌.钼合金材料的研究与发展[J],中国钼业,1996,2(20)
7.罗振中.喷涂钼丝在汽车工业中的应用及生产[J],中国钼业,1997,21(4):31-33.
8.吴全兴.钨钼在功能材料上的应用[J],稀有金属快报,1993,(10)
9.林春元,程秀俭.钼矿选矿与深加工[M],冶金工业出版社,1997
10.李九州.含碳多金属钼矿选冶试验研究[D],西安建筑科技大学工程硕士论文,2007,4
11.胡熙庚.有色金属硫化矿选矿[M],冶金工业出版社.1987.
12.刘兴华.工艺矿物学在钼业的应用[J],中国钼业,1999,4
13.王资.辉钼矿的浮选[J],昆明冶金高等专科学校学报,1996,6(12)
14.D.Malhotra,R.M.Rowe and A.K.Bhasin,Evaluation of collectors for molybdenite flotation[J],Miner.Metall.Process.1986,3(3)
15.朱一民.辉钼矿浮选药剂[J],国外金属矿选矿,1998.11
16.Chander,S.and Fuerstenan,D.W..On the natural flotability of molybdenite[J],Trans,SME,1972,252
17.柳晓峰,吴亚利.钼选矿过程中再磨位置的探讨[J],中国钼业,1999,8(23)
18.张文钲.辉钼矿浮选捕收剂的寻觅[J],中国钼业,2005,4(30)
19.Y Ye,W.H.Jang and M.R.Yalamanchili.Molybdenite flotation from copper molybdenum concentrates by ozone conditioning[J],Miner.Metall.Process,1990,7(4)
20.陈建华,冯其明.钼矿的选矿现状[J],矿产保护与利用,1994,4
21.G.M.Yashina and L.D.Sheveleva.Possibility of leaching of East Kounrad deposit molybdenum sulfide ores[J].CA,112:102489q
22.郭朝洪,皇文俊,崔养权.我国钼矿资源及开发[J],中国钼业,1997(21)22.
秦文峰,彭金辉,樊希安等.利用钼酸钙废物制取钼酸氨的新工艺[J],矿产综合利用, 2003(1)
23.刘学胜,于雪,康宝琳.钼氧化矿物的浮选试验研究[J],有色矿冶,2004,5(29)
24.张文钲.我国钼矿资源的特点及其选矿现状[J]
25.于金吾,李安.现代矿山选矿新工艺、新技术、新设备与强制性标准规范全书[M],当代中国音像出版社
26.张文钲,徐秋生.我国钼资源开发现状及发展趋势[J],矿业快报,2006,9(9)
27.杨剑波,王彦峰,陈忠典.浮选住在钼选矿中的应用和实践[J],中国钼业,2005,4(30)
28.S.M.不拉托维克,D.M.威思路齐尔,C.坎特,智力主要斑岩铜钼矿选矿生产实践:技术创新和机会[J],国外选矿快报,1999,2(4)
29.宁振茹,董允杰.国内外钼矿综合利用概况及对我国钼矿综合利用的建议[J],中国钼业,1998,8(22)
30.罗开贤,胡岳华,孙伟.凡口矿选矿废水资源化综合利用技术研究[J],有色金属(选矿部分),2003(4)
31.杨江海.金堆城钼业公司选矿尾矿及废水的综合治理[J],中国钼业,1997,6(21)
32.倪健.高浊度尾矿水处理的探讨[J]
33.R.W.史密斯.选矿厂的废水和废料的处理[J],国外金属矿选矿,1998,12
34.林河成.我国钼矿山生产中的三废治理[J],四川有色金属,2005,6月
35.欧阳德玲.聚丙烯酰胺净化尾矿水[J],煤矿环境保护,(12)
36.吕建业,沈耀平,张洪恩.辉钼矿表面特性及其可浮性的研究[J]
37.王成行,童雄,孙吉鹏.水玻璃在选矿中的应用与前景的分析[J],国外金属矿选矿,2008,10
38.郑忠,胡记华等.胶体稳定性[M],广州科技出版社
39.杨红霞,刘卫东.分散剂在陶瓷浆料制备中的应用[J],陶瓷科学与艺术,2004,6
40.龚焕高,薛问亚.浮选[M],东北工学院
41.李值.用改性水玻璃浮选钼矿石[J],有色金属(选矿部分),2003,(3)
42.张美鸽,徐秋生,刘迎春.YC药剂工业试验研究[J],有色金属(选矿部分),2007,(2)
43.王淀佐.浮选剂作用原理与应用[M],冶金工业出版社,1982
44.朱建光,朱一民.第二讲 烃油类捕收剂[J]
45.魏德洲.固体物料分选学[M],北京:冶金工业出版社,2000,358-359
46.朱玉箱,朱建光.浮选药剂的化学原理[M],长沙:中南工业大学出版社,1996
47.F·麦罗等.浮选起泡剂的基本性质及其对浮选的影响[J],国外金属矿选矿,2007,4
48.马青山.絮凝化学和絮凝剂[M],北京:中国环境科学出版社,1988
49.湛含辉,钟乐,韦小利.聚丙烯酰胺絮凝机理及流体力学化学因素的研究[J],选煤技术,2007,2(1)
50.徐晓军等.化学絮凝剂作用原理[M],北京:科学出版社,2005
2.张文钲.世界钼业20年[J],中国钼业,1997,6(21)
3.张文钲.21世纪的钼化学产品[J],中国钼业,2000,2(24)
4.林春元,程秀俭.钼矿选矿与深加工[M],冶金工业出版社,1997
5.杨敏郂.钼科技发展进步研究[J],中国钼业,1996,12(20)
6.徐志昌.钼合金材料的研究与发展[J],中国钼业,1996,2(20)
7.罗振中.喷涂钼丝在汽车工业中的应用及生产[J],中国钼业,1997,21(4):31-33.
8.吴全兴.钨钼在功能材料上的应用[J],稀有金属快报,1993,(10)
9.林春元,程秀俭.钼矿选矿与深加工[M],冶金工业出版社,1997
10.李九州.含碳多金属钼矿选冶试验研究[D],西安建筑科技大学工程硕士论文,2007,4
11.胡熙庚.有色金属硫化矿选矿[M],冶金工业出版社.1987.
12.刘兴华.工艺矿物学在钼业的应用[J],中国钼业,1999,4
13.王资.辉钼矿的浮选[J],昆明冶金高等专科学校学报,1996,6(12)
14.D.Malhotra,R.M.Rowe and A.K.Bhasin,Evaluation of collectors for molybdenite flotation[J],Miner.Metall.Process.1986,3(3)
15.朱一民.辉钼矿浮选药剂[J],国外金属矿选矿,1998.11
16.Chander,S.and Fuerstenan,D.W..On the natural flotability of molybdenite[J],Trans,SME,1972,252
17.柳晓峰,吴亚利.钼选矿过程中再磨位置的探讨[J],中国钼业,1999,8(23)
18.张文钲.辉钼矿浮选捕收剂的寻觅[J],中国钼业,2005,4(30)
19.Y Ye,W.H.Jang and M.R.Yalamanchili.Molybdenite flotation from copper molybdenum concentrates by ozone conditioning[J],Miner.Metall.Process,1990,7(4)
20.陈建华,冯其明.钼矿的选矿现状[J],矿产保护与利用,1994,4
21.G.M.Yashina and L.D.Sheveleva.Possibility of leaching of East Kounrad deposit molybdenum sulfide ores[J].CA,112:102489q
22.郭朝洪,皇文俊,崔养权.我国钼矿资源及开发[J],中国钼业,1997(21)22.
秦文峰,彭金辉,樊希安等.利用钼酸钙废物制取钼酸氨的新工艺[J],矿产综合利用, 2003(1)
23.刘学胜,于雪,康宝琳.钼氧化矿物的浮选试验研究[J],有色矿冶,2004,5(29)
24.张文钲.我国钼矿资源的特点及其选矿现状[J]
25.于金吾,李安.现代矿山选矿新工艺、新技术、新设备与强制性标准规范全书[M],当代中国音像出版社
26.张文钲,徐秋生.我国钼资源开发现状及发展趋势[J],矿业快报,2006,9(9)
27.杨剑波,王彦峰,陈忠典.浮选住在钼选矿中的应用和实践[J],中国钼业,2005,4(30)
28.S.M.不拉托维克,D.M.威思路齐尔,C.坎特,智力主要斑岩铜钼矿选矿生产实践:技术创新和机会[J],国外选矿快报,1999,2(4)
29.宁振茹,董允杰.国内外钼矿综合利用概况及对我国钼矿综合利用的建议[J],中国钼业,1998,8(22)
30.罗开贤,胡岳华,孙伟.凡口矿选矿废水资源化综合利用技术研究[J],有色金属(选矿部分),2003(4)
31.杨江海.金堆城钼业公司选矿尾矿及废水的综合治理[J],中国钼业,1997,6(21)
32.倪健.高浊度尾矿水处理的探讨[J]
33.R.W.史密斯.选矿厂的废水和废料的处理[J],国外金属矿选矿,1998,12
34.林河成.我国钼矿山生产中的三废治理[J],四川有色金属,2005,6月
35.欧阳德玲.聚丙烯酰胺净化尾矿水[J],煤矿环境保护,(12)
36.吕建业,沈耀平,张洪恩.辉钼矿表面特性及其可浮性的研究[J]
37.王成行,童雄,孙吉鹏.水玻璃在选矿中的应用与前景的分析[J],国外金属矿选矿,2008,10
38.郑忠,胡记华等.胶体稳定性[M],广州科技出版社
39.杨红霞,刘卫东.分散剂在陶瓷浆料制备中的应用[J],陶瓷科学与艺术,2004,6
40.龚焕高,薛问亚.浮选[M],东北工学院
41.李值.用改性水玻璃浮选钼矿石[J],有色金属(选矿部分),2003,(3)
42.张美鸽,徐秋生,刘迎春.YC药剂工业试验研究[J],有色金属(选矿部分),2007,(2)
43.王淀佐.浮选剂作用原理与应用[M],冶金工业出版社,1982
44.朱建光,朱一民.第二讲 烃油类捕收剂[J]
45.魏德洲.固体物料分选学[M],北京:冶金工业出版社,2000,358-359
46.朱玉箱,朱建光.浮选药剂的化学原理[M],长沙:中南工业大学出版社,1996
47.F·麦罗等.浮选起泡剂的基本性质及其对浮选的影响[J],国外金属矿选矿,2007,4
48.马青山.絮凝化学和絮凝剂[M],北京:中国环境科学出版社,1988
49.湛含辉,钟乐,韦小利.聚丙烯酰胺絮凝机理及流体力学化学因素的研究[J],选煤技术,2007,2(1)
50.徐晓军等.化学絮凝剂作用原理[M],北京:科学出版社,2005