CN105016525A - Copper-molybdenum ore beneficiation wastewater treatment method - Google Patents
Copper-molybdenum ore beneficiation wastewater treatment method Download PDFInfo
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- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 238000005456 ore beneficiation Methods 0.000 title claims abstract description 32
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000005188 flotation Methods 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000010408 sweeping Methods 0.000 claims description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 6
- 238000011085 pressure filtration Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 7
- 230000002000 scavenging effect Effects 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 10
- 239000010949 copper Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 229910052750 molybdenum Inorganic materials 0.000 description 8
- 239000011733 molybdenum Substances 0.000 description 8
- 150000005837 radical ions Chemical class 0.000 description 8
- 238000000227 grinding Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
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Abstract
Description
技术领域technical field
本发明涉及铜钼矿选矿技术领域，尤其涉及一种铜钼矿选矿废水处理方法。The invention relates to the technical field of copper-molybdenum ore beneficiation, in particular to a method for treating copper-molybdenum ore beneficiation wastewater.
背景技术Background technique
目前，铜钼矿选矿工艺大多是先进行铜钼混选，再进行铜钼分离。在铜钼分离中会产生大量的选矿废水，如果将这些选矿废水外排，则不仅会造成水资源的浪费，而且会给周围环境带来严重污染。At present, most of the beneficiation process of copper-molybdenum ore is to carry out mixed separation of copper and molybdenum first, and then separate copper and molybdenum. A large amount of beneficiation wastewater will be produced in the separation of copper and molybdenum. If the beneficiation wastewater is discharged, it will not only cause waste of water resources, but also cause serious pollution to the surrounding environment.
随着环保要求的提高，铜钼矿选矿废水一般不能外排，只能回用到选矿流程中；但是，铜钼矿选矿废水中含有多种离子，如果将其直接回用到选矿流程中，会恶化浮选氛围，降低有用矿物浮选回收率，因此现有技术中急需一种经济可行的铜钼矿选矿废水处理方法。With the improvement of environmental protection requirements, copper-molybdenum ore beneficiation wastewater generally cannot be discharged outside, and can only be reused in the beneficiation process; however, copper-molybdenum ore beneficiation wastewater contains a variety of ions, if it is directly reused in the beneficiation process, It will deteriorate the flotation atmosphere and reduce the flotation recovery rate of useful minerals. Therefore, an economical and feasible copper-molybdenum ore beneficiation wastewater treatment method is urgently needed in the prior art.
发明内容Contents of the invention
针对现有技术中的上述不足之处，本发明提供了一种铜钼矿选矿废水处理方法，不仅能够有效消除铜钼矿选矿废水中各种离子对铜钼浮选的影响，而且工艺简单、操作方便、成本低廉。Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for treating copper-molybdenum mineral processing wastewater, which can not only effectively eliminate the influence of various ions in copper-molybdenum mineral processing wastewater on copper-molybdenum flotation, but also has a simple process, The operation is convenient and the cost is low.
本发明的目的是通过以下技术方案实现的：The purpose of the present invention is achieved through the following technical solutions:
一种铜钼矿选矿废水处理方法，包括如下步骤：A method for treating copper-molybdenum ore dressing wastewater, comprising the steps of:
步骤A，对铜钼矿选矿废水进行澄清处理，得到澄清铜钼矿选矿废水；Step A, clarifying the copper-molybdenum ore dressing wastewater to obtain clarified copper-molybdenum ore dressing wastewater;
步骤B，将澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆按照重量比0.1～15:100的比例混合，并搅拌至少2min，即完成铜钼矿选矿废水处理。Step B, mixing the clarified copper-molybdenum ore dressing wastewater with the copper-molybdenum ore rough-sweeping tailings slurry at a weight ratio of 0.1 to 15:100, and stirring for at least 2 minutes to complete the copper-molybdenum ore dressing wastewater treatment.
优选地，在步骤B中，搅拌时间为2～6min。Preferably, in step B, the stirring time is 2-6 min.
优选地，还包括：将步骤B处理后的铜钼矿选矿废水直接回用到铜钼矿浮选流程中。Preferably, it also includes: directly reusing the copper-molybdenum ore beneficiation wastewater treated in step B into the copper-molybdenum ore flotation process.
优选地，所述的铜钼矿浮选流程包括铜钼矿混选；对步骤B处理后的铜钼矿选矿废水进行浓密压滤处理，再回用到铜钼矿混选中。Preferably, the copper-molybdenum ore flotation process includes copper-molybdenum ore mixed separation; the copper-molybdenum ore beneficiation wastewater treated in step B is subjected to dense pressure filtration treatment, and then reused in the copper-molybdenum ore mixed separation.
由上述本发明提供的技术方案可以看出，本发明实施例所提供的铜钼矿选矿废水处理方法将澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆按照重量比0.1～15:100的比例混合，从而使澄清铜钼矿选矿废水中的S2-、SiO3 2-等酸根离子与铜钼矿粗扫选尾矿浆中的Ca2+发生一系列的物理和化学作用，并生产沉淀，这有效降低了铜钼矿选矿废水中S2-、SiO3 2-等酸根离子的含量，消除了这些酸根离子对铜钼浮选的影响，从而使处理后的铜钼矿选矿废水能够完全回用到铜钼矿浮选流程中，并且不会影响选矿指标。It can be seen from the above-mentioned technical solutions provided by the present invention that the copper-molybdenum ore dressing wastewater treatment method provided by the embodiments of the present invention will clarify the copper-molybdenum ore dressing wastewater and the copper-molybdenum ore rough-sweeping tailings slurry according to the weight ratio of 0.1 to 15:100 Mixing in a certain ratio, so that the S 2- , SiO 3 2- and other acid radical ions in the clarified copper-molybdenum ore dressing wastewater and the Ca 2+ in the copper-molybdenum ore rough-sweeping tailings slurry undergo a series of physical and chemical interactions, and produce Precipitation, which effectively reduces the content of acid radical ions such as S 2- and SiO 3 2- in copper-molybdenum mineral processing wastewater, and eliminates the influence of these acid radical ions on copper-molybdenum flotation, so that the treated copper-molybdenum mineral processing wastewater can be It can be completely reused in the flotation process of copper-molybdenum ore, and will not affect the beneficiation index.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动行为的前提下，还可以根据这些附图获得其他附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those skilled in the art can also obtain other drawings based on these drawings without any creative work.
图1为应用本发明所提供铜钼矿选矿废水处理方法示意图。Fig. 1 is a schematic diagram of the copper-molybdenum ore beneficiation wastewater treatment method provided by the present invention.
图2为实施例一中进行铜钼矿粗选作业试验的流程示意图。Fig. 2 is a schematic flow chart of the copper-molybdenum ore roughing operation test in the first embodiment.
具体实施方式Detailed ways
下面结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明的保护范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
下面对本发明所提供的铜钼矿选矿废水处理方法进行详细描述。The method for treating copper-molybdenum ore beneficiation wastewater provided by the present invention will be described in detail below.
一种铜钼矿选矿废水处理方法，包括如下步骤：包括如下步骤：A method for treating copper-molybdenum ore dressing wastewater, comprising the steps of: comprising the steps of:
步骤A，对铜钼矿选矿废水进行澄清处理，得到澄清铜钼矿选矿废水。In step A, the copper-molybdenum ore beneficiation wastewater is clarified to obtain clarified copper-molybdenum ore beneficiation wastewater.
步骤B，将澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆按照重量比0.1～15:100的比例混合，并搅拌至少2min，即完成铜钼矿选矿废水处理。Step B, mixing the clarified copper-molybdenum ore dressing wastewater with the copper-molybdenum ore rough-sweeping tailings slurry at a weight ratio of 0.1 to 15:100, and stirring for at least 2 minutes to complete the copper-molybdenum ore dressing wastewater treatment.
其中，澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆最好按照重量比0.1～15:100的比例混合，这是因为如果澄清铜钼矿选矿废水的用量过多，那么铜钼矿粗扫选尾矿浆中的Ca2+数目会无法满足澄清铜钼矿选矿废水中S2-、SiO3 2-等酸根离子的需求。搅拌时间最好为2～6min，如果搅拌时间少于2min，则澄清铜钼矿选矿废水中的S2-、SiO3 2-等酸根离子无法与铜钼矿粗扫选尾矿浆中的Ca2+充分反应，而2～6min刚好可以使澄清铜钼矿选矿废水中的S2-、SiO3 2-等酸根离子与铜钼矿粗扫选尾矿浆中的Ca2+充分反应，因此没有必要耗费过长的搅拌时间。如图1所示，完成步骤B处理后的铜钼矿选矿废水可以直接回用到铜钼矿浮选流程中，例如：完成步骤B处理后的铜钼矿选矿废水可以经过浓密压滤处理后放入到回水池中，并在进行铜钼矿混选时作为磨矿用液体使用。Among them, it is best to mix the clarified copper-molybdenum ore beneficiation wastewater with the copper-molybdenum ore rough-sweeping tailings slurry at a weight ratio of 0.1 to 15:100. The number of Ca 2+ in the rough sweeping tailings slurry will not be able to meet the demand for clarification of S 2- , SiO 3 2- and other acid ions in copper-molybdenum ore beneficiation wastewater. The best stirring time is 2-6 minutes. If the stirring time is less than 2 minutes, the acid radical ions such as S 2- and SiO 3 2- in the clarified copper-molybdenum ore beneficiation wastewater cannot be combined with the Ca 2- + to fully react, and 2-6 minutes is just enough to make the acid radical ions such as S 2- and SiO 3 2- in the clarified copper-molybdenum ore dressing wastewater fully react with the Ca 2+ in the copper-molybdenum rough-sweeping tailings slurry, so it is not necessary Excessive mixing time is spent. As shown in Figure 1, the copper-molybdenum ore beneficiation wastewater after step B treatment can be directly reused in the copper-molybdenum ore flotation process. Put it into the return pool and use it as a liquid for grinding during the mixed separation of copper and molybdenum ore.
具体地，该铜钼矿选矿废水处理方法的工作原理如下：铜钼矿选矿废水中主要含有Cu2+、S2-、SiO3 2-等离子，其中会导致浮选氛围恶化的主要是S2-、SiO3 2-等酸根离子，而铜钼矿粗扫选尾矿浆中含有Ca2+，因此当将澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆按比例混合后，澄清铜钼矿选矿废水中的S2-、SiO3 2-等酸根离子会与铜钼矿粗扫选尾矿浆中的Ca2+发生一系列的物理和化学作用，生产沉淀，这可以有效降低铜钼矿选矿废水中S2-、SiO3 2-等酸根离子的含量，消除了这些酸根离子对铜钼浮选的影响，从而使处理后的铜钼矿选矿废水能够完全回用到铜钼矿粗选作业、扫选作业等铜钼矿浮选流程中，并且不会影响选矿指标。由于该铜钼矿选矿废水处理方法并未添加额外药剂，仅是使用铜钼矿浮选流程中的产物(即铜钼矿粗扫选尾矿浆)，因此该铜钼矿选矿废水处理方法成本低廉。Specifically, the working principle of the copper-molybdenum ore dressing wastewater treatment method is as follows: the copper-molybdenum ore dressing wastewater mainly contains Cu 2+ , S 2- , SiO 3 2- ions, and among them, S 2 - , SiO 3 2- and other acid radical ions, and the copper molybdenum ore rough sweep tailings slurry contains Ca 2+ , so when the clarified copper molybdenum ore beneficiation wastewater and copper molybdenum rough sweep tailings slurry are mixed in proportion, the clarified copper Acid ions such as S 2- and SiO 3 2- in molybdenum ore dressing wastewater will have a series of physical and chemical interactions with Ca 2+ in copper-molybdenum ore rough sweeping tailings slurry to produce precipitation, which can effectively reduce copper molybdenum The content of acid radical ions such as S 2- and SiO 3 2- in mineral processing wastewater eliminates the influence of these acid radical ions on copper molybdenum flotation, so that the treated copper molybdenum ore mineral processing wastewater can be completely recycled to copper molybdenum ore crude In the copper-molybdenum ore flotation process such as beneficiation and sweeping operations, it will not affect the beneficiation index. Since the copper-molybdenum ore dressing wastewater treatment method does not add additional chemicals, it only uses the product in the copper-molybdenum ore flotation process (ie copper-molybdenum ore rough sweeping tailings slurry), so the cost of the copper-molybdenum ore dressing wastewater treatment method is low .
由此可见，本发明实施例不仅能够有效消除铜钼矿选矿废水中各种离子对铜钼浮选的影响，而且工艺简单、操作方便、成本低廉。It can be seen that the embodiment of the present invention can not only effectively eliminate the influence of various ions in copper-molybdenum ore dressing wastewater on copper-molybdenum flotation, but also has simple process, convenient operation and low cost.
为了更加清晰地展现出本发明所提供的技术方案及所产生的技术效果，下面以几具体实施例并结合附图对本发明实施例所提供的铜钼矿选矿废水处理方法进行详细描述。In order to more clearly demonstrate the technical solutions provided by the present invention and the resulting technical effects, the method for treating copper-molybdenum ore beneficiation wastewater provided by the embodiments of the present invention will be described in detail below with several specific examples and in conjunction with the accompanying drawings.
实施例一Embodiment one
如图2所示，取六份等量的铜钼矿原矿分别进行六次铜钼矿粗选作业试验；每份铜钼矿原矿中分别加入石灰(石灰的用量为每吨铜钼矿原矿加入1000克石灰)，并分别采用下表1中的磨矿用液体进行磨矿，任意两份铜钼矿原矿所采用的磨矿用液体均不相同。对于每份铜钼矿而言，当粒度不大于0.074mm的铜钼矿颗粒占每份铜钼矿总重量的75％时，停止磨矿，并分别向磨矿后的铜钼矿中加入丁基黄药(丁基黄药的用量为每吨铜钼矿原矿加入150克丁基黄药)、丁铵黑药(丁铵黑药的用量为每吨铜钼矿原矿加入20克丁铵黑药)和2号油(2号油的用量为每吨铜钼矿原矿加入20克2号油)，再搅拌2min；然后再进行5min的铜钼矿粗选作业，即可得到铜钼矿粗精矿和铜钼矿粗选尾矿。As shown in Figure 2, get six equal amounts of copper-molybdenum ore raw ore and carry out six times of copper-molybdenum ore roughing operation test respectively; Add lime respectively in every part of copper-molybdenum ore raw ore (the consumption of lime is that every ton of copper-molybdenum ore raw ore adds 1000 grams of lime), and adopt the grinding liquid in the following table 1 to grind ore respectively, and the grinding liquid adopted by any two copper-molybdenum ore raw ores is all different. For each copper-molybdenum ore, when the copper-molybdenum ore particles with a particle size not greater than 0.074mm accounted for 75% of the total weight of each copper-molybdenum ore, stop grinding, and add D Base xanthate (the dosage of butyl xanthate is to add 150 grams of butyl xanthate per ton of copper-molybdenum ore), butylammonium black medicine (the dosage of butylammonium black medicine is to add 20 grams of butylammonium black per ton of copper-molybdenum ore medicine) and No. 2 oil (the amount of No. 2 oil is to add 20 grams of No. 2 oil per ton of copper-molybdenum ore raw ore), and then stir for 2 minutes; Concentrates and rougher tailings of copper-molybdenum ores.
表1：Table 1:
这六次试验的实验结果可以如下表2所示：The experimental results of these six tests can be shown in Table 2 below:
表2：Table 2:
经过对表2中的数据进行对比可知：在第六次试验中，无论是铜的品位和回收率，还是钼的品位和回收率，均比其余几次试验低很多，这说明未经处理的铜钼矿选矿废水直接回用会对铜钼矿浮选流程产生很大的负面影响。而在澄清铜钼矿选矿废水与铜钼矿粗扫选尾矿浆分别按照5:100、10:100和15:100的重量比混合时，无论是铜的品位和回收率，还是钼的品位和回收率，几乎均与全部采用铜钼矿粗扫选尾矿浆时没有差别，而且只是比全部采用清水时略低一些，由此可见，按照本发明实施例所提供的铜钼矿选矿废水处理方法处理后的铜钼矿选矿废水几乎不会对铜钼的浮选产生影响，因此能够完全直接回用到铜钼矿粗选作业、扫选作业等铜钼矿浮选流程中。Through comparing the data in Table 2, it can be seen that in the sixth test, both the grade and recovery rate of copper and the grade and recovery rate of molybdenum are much lower than the remaining several tests, which shows that the untreated The direct reuse of copper-molybdenum ore beneficiation wastewater will have a great negative impact on the flotation process of copper-molybdenum ore. When clarifying copper-molybdenum ore dressing wastewater and copper-molybdenum ore rough-sweeping tailings slurry are mixed according to the weight ratio of 5:100, 10:100 and 15:100 respectively, whether it is copper grade and recovery rate, or molybdenum grade and The recovery rate is almost the same as when all copper-molybdenum ore rough-sweeping tailings slurry is used, and it is slightly lower than when all clear water is used. This shows that according to the copper-molybdenum ore mineral processing wastewater treatment method provided by the embodiments of the present invention The treated copper-molybdenum ore beneficiation wastewater has almost no impact on the flotation of copper and molybdenum, so it can be completely and directly reused in copper-molybdenum ore roughing operations, sweeping operations and other copper-molybdenum ore flotation processes.
综上可见，本发明实施例不仅能够有效消除铜钼矿选矿废水中各种离子对铜钼浮选的影响，而且工艺简单、操作方便、成本低廉。In summary, the embodiment of the present invention can not only effectively eliminate the influence of various ions in copper-molybdenum ore dressing wastewater on copper-molybdenum flotation, but also has simple process, convenient operation and low cost.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书的保护范围为准。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of changes or modifications within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
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