CN108296026B - Flotation method for lead-low-zinc high-type refractory lead-zinc ore - Google Patents
Flotation method for lead-low-zinc high-type refractory lead-zinc ore Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention provides a flotation method of lead-low-zinc high-type refractory lead-zinc ore, which comprises the following steps: adding a pH regulator, a potential regulator, a collecting agent and a foaming agent into ore pulp of lead-zinc ore to perform lead mineral preferential flotation, wherein in the process, the pH value of the ore pulp is regulated to 9-11, and the potential of the flotation ore pulp is regulated to 210-350 mv by using potassium permanganate as the potential regulator to obtain lead concentrate. And (4) dehydrating the product of the process and recycling the product to the lead mineral preferential flotation process. And then, adding a pH regulator, an activating agent, a collecting agent and a foaming agent into the lead mineral priority flotation tailings to perform zinc mineral flotation, and dehydrating the product for recycling in the zinc mineral flotation process. The flotation is carried out by regulating the potential of the ore pulp through potassium permanganate, and the flotation method has the advantages of easiness in lead-zinc separation, no need of adding an inhibitor in the lead mineral preferential flotation process, low flotation agent loss, high agent recycling rate and the like.
Description
Technical Field
The invention relates to the field of lead-zinc ore dressing, in particular to a flotation method for lead-zinc ore with low lead content and high lead content and difficult separation.
Background
The flotation method is the most commonly used beneficiation method for lead-zinc sulfide ores, and because the natural floatability of lead minerals is better than that of zinc minerals in the flotation process, the lead-zinc sulfide ores generally adopt a preferential flotation process of 'floating lead and inhibiting zinc', namely: firstly, inhibiting zinc minerals by using an inhibitor, then floating lead minerals, and then activating the inhibited zinc minerals by using an activating agent to recover the zinc minerals. Patent CN103817013A discloses a lead-zinc ore flotation method, which comprises adding zinc sulfate, sodium metabisulfite and sodium sulfide as inhibitors for inhibiting zinc floating, and separating lead ore by flotation process after zinc ore is inhibited.
However, the above method is only suitable for treating common lead-zinc sulfide ores, and for lead-zinc ores with low lead grade and high zinc grade, the following problems can occur when a preferential flotation process for inhibiting zinc minerals and preferentially floating the lead minerals is adopted: 1) because the zinc mineral content in the raw material is high, in the process of the lead mineral preferential flotation of lead flotation and zinc inhibition, a large amount of inhibitors are required to be added to inhibit the zinc mineral in order to avoid the over-standard zinc content in lead concentrate, so that the cost of the flotation reagent is high; 2) the preferential flotation process of lead-zinc ore is characterized in that after the preferential flotation process of lead minerals floating lead and inhibiting zinc, a zinc mineral flotation process is carried out to recover the zinc minerals. Because a large amount of inhibitors are added in the lead mineral preferential flotation stage to inhibit the flotation activity of the zinc mineral, a large amount of activators are required to be added in the zinc mineral flotation process to activate the previously inhibited zinc mineral, so that the cost of the flotation reagent is further increased; 3) when a large amount of activating agent is added in the zinc mineral flotation process to activate the zinc mineral, the activating agent can also activate impurity minerals such as pyrite, pyrrhotite and the like, so that a large amount of impurity minerals enter the zinc concentrate, and the zinc concentrate has low grade and poor quality; 4) the large amount of inhibitor added in the lead mineral preferential flotation stage and the large amount of activating agent added in the zinc mineral flotation stage can cause the pollutant content in the mineral processing wastewater to be too high, and cause serious environmental pollution.
Disclosure of Invention
The invention aims to provide a flotation method for lead-low-zinc high-type refractory lead-zinc ores, which is suitable for the lead-low-zinc high-type refractory lead-zinc ores and can quickly separate lead concentrate and zinc concentrate products with high grade and recovery rate at lower cost.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides a flotation method of lead-low-zinc high-type refractory lead-zinc ore, which comprises the following steps:
s1, lead mineral preferential flotation: after grinding lead-zinc ore, adding a pH regulator, a potential regulator, a collecting agent and a foaming agent to perform lead mineral preferential flotation to obtain lead concentrate and lead mineral preferential flotation tailings, wherein the potential regulator is potassium permanganate, the potential regulator regulates the potential of flotation pulp to 210-350 mv, and the pH regulator regulates the pH value of the flotation pulp to 9-11;
s2, dehydration: respectively dehydrating the lead concentrate and the lead mineral preferential flotation tailings, and combining the lead concentrate and the lead mineral preferential flotation tailings to obtain first wastewater, wherein the first wastewater is reused in the lead mineral preferential flotation process in the step S1;
s3, zinc mineral flotation: adding a pH regulator, an activating agent, a collecting agent and a foaming agent into the lead mineral priority flotation tailings to perform zinc mineral flotation to obtain zinc concentrate and zinc mineral flotation tailings;
s4, dehydration: and (4) respectively dehydrating the zinc concentrate and the zinc mineral flotation tailings, and combining to obtain second wastewater, wherein the second wastewater is reused in the zinc mineral flotation process in the step S3.
The flotation method of the lead low-zinc high-type refractory lead-zinc ore provided by the embodiment of the invention has the beneficial effects that:
in the environment of flotation pulp with high pH value (pH value of 9-11) and high potential (210-350 mv), floatability of lead minerals is obviously higher than floatability of zinc minerals and other minerals, and lead and zinc flotation separation difficulty is lower under the condition. The existing lead-zinc flotation separation is generally carried out by adjusting the pH value of flotation pulp to 9-12 by lime, sodium carbonate or sodium hydroxide, but the pulp potential is generally at a low potential level of-150-50 mv, so the lead-zinc flotation separation difficulty is still high, and lead-zinc flotation separation can be realized only by using a large amount of inhibitors to inhibit zinc minerals for lead-low-zinc high-grade lead-zinc ores. According to the invention, by adding the potential regulator, the potential of the ore pulp can be regulated to a high potential level (210-350 mv) when the ore pulp has a high pH value (pH value of 9-11), so that the lead and zinc are easy to float and separate. More importantly, the potassium permanganate is used as the potential regulator, and can effectively improve the potential of the ore pulp and inhibit impurities such as zinc minerals, pyrite and the like to a certain extent, so that an inhibitor for inhibiting the impurities such as the zinc minerals and the like from floating upwards is not required to be additionally added in the preferential flotation process of the lead minerals, and the grade and the recovery rate of the lead concentrate are ideal.
In the prior art, common zinc mineral inhibitors such as zinc sulfate, sulfite and the like are adopted to play a role in inhibiting by acting on the surfaces of mineral particles, concentrate and tailings are continuously separated along with the flotation process, and a large amount of inhibitors are attached to the surfaces of the mineral particles and are separated along with the separation process, so that the inhibitors are high in loss and inconvenient to recycle. The pH regulator and the potential regulator in the invention mainly act on the flotation pulp solution to provide a high-pH value and high-potential pulp environment for the flotation process, and in the flotation process, the pH regulator and the potential regulator are not greatly lost along with the discharge of concentrate and tailings, but are greatly remained in the pulp solution, so that the recovery and the utilization are convenient.
Based on the action mechanism of the flotation reagent, products of the lead mineral preferential flotation process and the zinc mineral flotation process are dehydrated, and the recovered wastewater is continuously recycled for respective flotation processes, so that the use amount of the reagent is greatly reduced, and the interference of wastewater with different reagent components on different flotation processes is effectively avoided.
Because no inhibitor is added in the preferential flotation process of the lead minerals and the potassium permanganate has relatively weak inhibition effect on the zinc minerals, the zinc minerals can be activated only by adding a small amount of activating agent in the subsequent flotation process of the zinc minerals, and the impurities such as pyrite, pyrrhotite and the like are effectively prevented from being activated, so that the impurity content in the zinc concentrate is effectively reduced.
In conclusion, the technology adopted by the invention ensures that the lead-low-zinc high-type refractory lead-zinc ore has the characteristics of easy lead-zinc separation in the flotation process, no need of adding an inhibitor in the lead mineral preferential flotation process, less flotation agent loss, effective recycling of main flotation agents, less consumption of an activating agent in the zinc mineral flotation process, good quality of lead concentrate and zinc concentrate, high beneficiation wastewater reuse rate, small environmental pollution and the like.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a process flow chart of a flotation method of lead-low-zinc high-type refractory lead-zinc ore provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following is a detailed description of the flotation method of lead-low-zinc high-type refractory lead-zinc ore of the embodiment of the present invention.
The embodiment of the invention provides a flotation method of lead-low-zinc high-type refractory lead-zinc ore, which comprises the following steps:
s1, lead mineral preferential flotation: after grinding lead-zinc ore, adding a pH regulator, a potential regulator, a collecting agent and a foaming agent to perform lead mineral preferential flotation to obtain lead concentrate and lead mineral preferential flotation tailings, wherein the potential regulator is potassium permanganate, the potential regulator regulates the potential of flotation pulp to 210-350 mv, and the pH regulator regulates the pH value of the flotation pulp to 9-11;
s2, dehydration: respectively dehydrating the lead concentrate and the lead mineral preferential flotation tailings, and combining the lead concentrate and the lead mineral preferential flotation tailings to obtain first wastewater, wherein the first wastewater is reused in the lead mineral preferential flotation process in the step S1;
s3, zinc mineral flotation: adding a pH regulator, an activating agent, a collecting agent and a foaming agent into the lead mineral priority flotation tailings to perform zinc mineral flotation to obtain zinc concentrate and zinc mineral flotation tailings;
s4, dehydration: and (4) respectively dehydrating the zinc concentrate and the zinc mineral flotation tailings, and combining to obtain second wastewater, wherein the second wastewater is reused in the zinc mineral flotation process in the step S3.
Further, in the preferred embodiment of the present invention, in step S1, the grain size of the lead-zinc ore grinding product is-0.074 mm, which accounts for 65-90%.
Further, in the preferred embodiment of the present invention, in step S1, the pH adjusting agent is lime, the collecting agent is ethion nitrogen, and the foaming agent is one or more selected from the group consisting of terpineol oil, No. two oil, methyl amyl alcohol, and butyl ether oil. The lime has the function of adjusting the pH value of the ore pulp and can inhibit minerals such as pyrite, pyrrhotite and the like, so that the lead concentrate and the zinc concentrate have low impurity content and high grade.
Further, in the preferred embodiment of the present invention, in the step S1, in the process of the preferential flotation of the lead mineral, the pH of the flotation pulp is adjusted to 9 to 11 by the pH adjusting agent, the amount of the collecting agent is 10 to 50g/t, and the amount of the foaming agent is 1 to 10 g/t. The effect of preferential flotation of lead minerals can be effectively ensured by adjusting the dosage and the proportion of the reagent. At the dosage, the lead mineral in the lead-zinc sulfide ore can be effectively separated.
Further, in the preferred embodiment of the present invention, in step S1, the potential adjusting agent adjusts the potential of the flotation pulp to 320-350 mv, and the pH adjusting agent adjusts the pH value of the flotation pulp to 10-11, so that the separation effect of lead and zinc can be improved and the quality of lead concentrate and zinc concentrate can be further improved under the potential level and pH environment.
Further, in the preferred embodiment of the present invention, the lead mineral preferential flotation process includes 1 roughing, 2-4 concentrating, and 1-2 scavenging processes.
Further, in the preferred embodiment of the present invention, in step S3, the pH adjusting agent is lime, the activating agent is copper sulfate, the collecting agent is one or a mixture of ethidium chloride and butyl xanthate, and the foaming agent is one or more selected from pine oil, second oil, methyl amyl alcohol and butyl ether oil.
Further, in the preferred embodiment of the present invention, in step S3, the pH of the ore slurry is adjusted to 9-11 by the pH adjusting agent, the amount of the activating agent is 10-60 g/t, the amount of the collecting agent is 20-80 g/t, and the amount of the foaming agent is 5-20 g/t. In the process of preferential flotation of lead minerals, potassium permanganate is adopted as a potential regulator, and the inhibition effect on zinc minerals is small, so that in the process, good separation of the zinc minerals can be realized only by adding a small amount of agents such as an activating agent.
Further, in the preferred embodiment of the present invention, the zinc mineral flotation process comprises 1 roughing, 2-4 concentrating, and 1-2 scavenging processes.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The flotation method for the lead-low-zinc high-type refractory lead-zinc ore provided by the embodiment comprises the following steps:
(1) grinding lead-zinc ore with lead grade of 1.19% and zinc grade of 4.12% until the granularity is-0.074 mm and accounts for 70%, then adding lime to adjust the pH value of the ore pulp to 10.5, adding potassium permanganate to adjust the electric potential of the ore pulp to 260mv, adding ethyl-sulfur-nitrogen with the amount of 20g/t and pine oil with the amount of 5g/t to perform lead mineral preferential flotation, wherein the flotation process comprises 1 roughing, 3 concentrating and 2 scavenging processes;
(2) respectively dehydrating lead concentrate obtained by the lead mineral preferential flotation and lead mineral preferential flotation tailings, combining wastewater removed by the two products, and reusing the wastewater in the lead mineral preferential flotation process;
(3) adding lime into tailings of the lead mineral preferential flotation to adjust the pH value of ore pulp to 10.5, adjusting the using amount of copper sulfate to 35g/t, adjusting the using amount of ethyl-sulfur-nitrogen to 50g/t and adjusting the using amount of pine oil to 10g/t, and carrying out zinc mineral flotation, wherein the flotation process comprises 1 roughing, 3 fine concentration and 2 scavenging processes;
(6) and respectively dehydrating the zinc concentrate obtained by the zinc mineral flotation and the zinc mineral flotation tailings, combining the wastewater removed by the two products, and reusing the wastewater in the zinc mineral flotation process.
The test results by adopting the process and the reagent conditions show that the lead-zinc ore can be effectively separated, and lead concentrate with lead grade of 46.69% and lead recovery rate of 90.17% and zinc concentrate with zinc grade of 49.92% and zinc recovery rate of 88.67% can be obtained by treating lead-zinc ore with lead grade of 1.19% and zinc grade of 4.12%.
Example 2
The flotation method for the lead-low-zinc high-type refractory lead-zinc ore provided by the embodiment comprises the following steps:
(1) grinding lead-zinc ore with lead grade of 1.07 percent and zinc grade of 3.94 percent until the granularity is-0.074 mm and accounts for 80 percent, then adding lime to adjust the pH value of the ore pulp to 9, adding potassium permanganate to adjust the electric potential of the ore pulp to 280mv, adding ethyl sulfur nitrogen with the dosage of 20g/t and pine alcohol oil with the dosage of 5g/t to perform lead mineral preferential flotation, wherein the flotation process comprises 1 roughing, 3 concentrating and 2 scavenging processes;
(2) respectively dehydrating lead concentrate obtained by the lead mineral preferential flotation and lead mineral preferential flotation tailings, combining wastewater removed by the two products, and reusing the wastewater in the lead mineral preferential flotation process;
(3) adding lime into tailings of the lead mineral preferential flotation to adjust the pH value of ore pulp to 10.5, adjusting the using amount of copper sulfate to 35g/t, adjusting the using amount of ethyl-sulfur-nitrogen to 50g/t and adjusting the using amount of pine oil to 10g/t, and carrying out zinc mineral flotation, wherein the flotation process comprises 1 roughing, 3 fine concentration and 2 scavenging processes;
(6) and respectively dehydrating the zinc concentrate obtained by the zinc mineral flotation and the zinc mineral flotation tailings, combining the wastewater removed by the two products, and reusing the wastewater in the zinc mineral flotation process.
The test results by adopting the process and the reagent conditions show that the lead-zinc ore can be effectively separated, and the lead concentrate with the lead grade of 45.26 percent and the lead recovery rate of 88.35 percent and the zinc concentrate with the zinc grade of 48.49 percent and the zinc recovery rate of 89.63 percent can be obtained by processing the lead-zinc ore with the lead grade of 1.07 percent and the zinc grade of 3.94 percent.
Example 3
The flotation method for the lead-low-zinc high-type refractory lead-zinc ore provided by the embodiment comprises the following steps:
(1) grinding lead-zinc ore with lead grade of 1.73 percent and zinc grade of 6.28 percent until the granularity is-0.074 mm and accounts for 75 percent, then adding lime to adjust the pH value of the ore pulp to 11, adding potassium permanganate to adjust the electric potential of the ore pulp to 340mv, adding 25g/t of ethide and 25g/t of pinitol oil and carrying out lead mineral preferential flotation, wherein the flotation process comprises 1 roughing, 3 concentrating and 2 scavenging processes;
(2) respectively dehydrating lead concentrate obtained by the lead mineral preferential flotation and lead mineral preferential flotation tailings, combining wastewater removed by the two products, and reusing the wastewater in the lead mineral preferential flotation process;
(3) adding lime into tailings of the lead mineral preferential flotation to adjust the pH value of ore pulp to 11, adjusting the using amount of copper sulfate to be 30g/t, adjusting the using amount of ethyl-sulfur-nitrogen to be 60g/t and adjusting the using amount of pine oil to be 15g/t, and carrying out zinc mineral flotation, wherein the flotation process comprises 1 roughing, 3 fine concentration and 2 scavenging processes;
(6) and respectively dehydrating the zinc concentrate obtained by the zinc mineral flotation and the zinc mineral flotation tailings, combining the wastewater removed by the two products, and reusing the wastewater in the zinc mineral flotation process.
The test results by adopting the process and the medicament conditions show that the lead-zinc ore can be effectively separated, and lead concentrate with lead grade of 50.67% and lead recovery rate of 92.84% and zinc concentrate with zinc grade of 55.17% and zinc recovery rate of 90.13% can be obtained by treating lead-zinc ore with lead grade of 1.73% and zinc grade of 6.28%.
Comparative example 1
The flotation separation process for lead-zinc ore provided by the comparative example comprises the following steps:
(1) grinding lead-zinc ore with lead grade of 1.73 percent and zinc grade of 6.28 percent until the granularity is-0.074 mm and accounts for 75 percent, and then adjusting the pH value of the ore pulp to 11 by utilizing lime, wherein the using amount of zinc sulfate is 450g/t, the using amount of sodium sulfite is 225g/t, the using amount of ethyl sulfur nitrogen is 25g/t, and the using amount of pine oil is 5g/t to carry out 1 time of rough concentration, 3 times of fine concentration and 2 times of scavenging processes of lead mineral preferential flotation;
(4) carrying out dehydration treatment on the concentrate subjected to the lead mineral preferential flotation, and reusing the removed wastewater in the lead mineral preferential flotation process;
(5) adjusting the pH value of ore pulp to 11, the using amount of copper sulfate to be 30g/t, the using amount of ethyl-sulfur-nitrogen to be 60g/t and the using amount of pine oil to be 15g/t for tailings of the lead mineral preferential flotation, and carrying out 1-time roughing, 3-time fine selection and 2-time scavenging processes of zinc mineral flotation;
(6) and (4) carrying out dehydration treatment on the concentrate and tailings obtained by the zinc mineral flotation, and reusing the removed wastewater in the zinc mineral flotation process.
The test results by adopting the process and the reagent conditions show that the lead-zinc ore can be effectively separated, and the lead concentrate with lead grade of 38.67 percent and lead recovery rate of 79.28 percent and the zinc concentrate with zinc grade of 37.55 percent and zinc recovery rate of 70.37 percent can be obtained by processing the lead-zinc ore with lead grade of 1.73 percent and zinc grade of 6.28 percent.
In summary, according to the flotation method for the lead-low-zinc high-type refractory lead-zinc ore provided by the embodiment of the invention, potassium permanganate is used as a potential regulator, and the ore pulp is regulated to a high potential and high pH value environment through a pH regulator, so that the lead-zinc flotation separation is easy, the lead-zinc flotation separation can be realized without adding an inhibitor, and high-grade lead concentrate and zinc concentrate can be obtained under the condition of low medicament consumption, especially low active agent consumption, so that the flotation method has a wide market application prospect.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (6)
1. A flotation method for lead-low-zinc high-type refractory lead-zinc ore is characterized by comprising the following steps:
s1, lead mineral preferential flotation: after grinding lead-zinc ore, adding a pH regulator, a potential regulator, a collecting agent and a foaming agent to perform lead mineral preferential flotation to obtain lead concentrate and lead mineral preferential flotation tailings, wherein the potential regulator is potassium permanganate, the potential regulator regulates the potential of flotation pulp to 320-350 mv, and the pH regulator regulates the pH value of the flotation pulp to 10-11;
s2, dehydration: respectively dehydrating the lead concentrate and the lead mineral preferential flotation tailings, and combining the lead concentrate and the lead mineral preferential flotation tailings to obtain first wastewater, wherein the first wastewater is reused in the lead mineral preferential flotation process in the step S1; wherein, in this step, the potential adjusting agent is not largely lost with the discharge of the lead concentrate and the lead mineral preferential flotation tailings, and is largely retained in the first wastewater;
s3, zinc mineral flotation: adding a pH regulator, an activating agent, a collecting agent and a foaming agent into the lead mineral priority flotation tailings to perform zinc mineral flotation to obtain zinc concentrate and zinc mineral flotation tailings, wherein in step S3, the pH regulator regulates the pH value of ore pulp to 9-11, the using amount of the activating agent is 10-60 g/t, the using amount of the collecting agent is 20-80 g/t, and the using amount of the foaming agent is 5-20 g/t;
s4, dehydration: and respectively dehydrating the zinc concentrate and the zinc mineral flotation tailings, and combining to obtain second wastewater, wherein the second wastewater is reused in the zinc mineral flotation process in the step S3.
2. The flotation method for lead-low-zinc high-type refractory lead-zinc ore according to claim 1, wherein in step S1, the pH regulator is lime, the collector is ethion nitrogen, and the foaming agent is one or more selected from pine oil, methyl amyl alcohol and butyl ether oil.
3. The flotation method for lead-low-zinc high-type refractory lead-zinc ores according to claim 2, wherein in the step S1, in the lead mineral preferential flotation process, the using amount of the collecting agent is 10-50 g/t, and the using amount of the foaming agent is 1-10 g/t.
4. The flotation method for lead-low-zinc high-type refractory lead-zinc ores according to claim 1, wherein the lead mineral preferential flotation process comprises 1 roughing, 2-4 concentrating and 1-2 scavenging processes.
5. The flotation method for lead low-zinc high-type refractory lead-zinc ore according to claim 1, wherein in step S3, the pH regulator is lime, the activator is copper sulfate, the collector is one or a mixture of ethidium nitrate and butyl xanthate, and the foaming agent is one or more selected from pine oil, methyl amyl alcohol and butyl ether oil.
6. The flotation method of lead low-zinc high-type refractory lead-zinc ore according to claim 1, characterized in that the zinc ore flotation process comprises 1 roughing, 2-4 concentrating and 1-2 scavenging processes.
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| CN109107773B (en) * | 2018-08-17 | 2020-11-10 | 云南驰宏锌锗股份有限公司 | Electrochemical flotation method for recovering lead-sulfur bulk concentrates from high-grade lead-zinc ores |
| CN110369150A (en) * | 2019-08-21 | 2019-10-25 | 彝良驰宏矿业有限公司 | A kind of high-grade lead sulfide mixed concentrate flotation separation method |
| CN111940145B (en) * | 2020-07-15 | 2022-11-08 | 中国地质科学院矿产综合利用研究所 | Separation method of lead-zinc fluorite ore |
| CN112892874A (en) * | 2021-01-18 | 2021-06-04 | 贵溪鲍家矿业有限公司 | Comprehensive utilization method of pit water of lead-zinc-silver ore |
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| CN103909020A (en) * | 2014-04-09 | 2014-07-09 | 湖南有色金属研究院 | Flotation separation inhibitor and separation method of galena, pyrite and sphalerite |
| CN105289851A (en) * | 2015-11-27 | 2016-02-03 | 杭州鑫磊矿业有限公司 | Production technology for lead and zinc floatation mineral powder |
| CN105642429A (en) * | 2016-01-28 | 2016-06-08 | 南京泽天环保有限公司 | Environment-friendly method for beneficiation by utilizing beneficiation backwater |
| RU2639347C1 (en) * | 2016-11-09 | 2017-12-21 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Method of flotation concentration of sulfide lead-zinc ores |
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