WO2023213100A1 - Marmatite and jamesonite flotation method - Google Patents

Marmatite and jamesonite flotation method Download PDF

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WO2023213100A1
WO2023213100A1 PCT/CN2023/073958 CN2023073958W WO2023213100A1 WO 2023213100 A1 WO2023213100 A1 WO 2023213100A1 CN 2023073958 W CN2023073958 W CN 2023073958W WO 2023213100 A1 WO2023213100 A1 WO 2023213100A1
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lead
ore
iron
zinc
flotation
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PCT/CN2023/073958
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French (fr)
Chinese (zh)
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胡明振
邓久帅
吴伯增
农永萍
黄锦庆
周德炎
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广西华锡集团股份有限公司
中国矿业大学(北京)
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Publication of WO2023213100A1 publication Critical patent/WO2023213100A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to the technical field of mineral processing, specifically a flotation agent and a flotation method for iron sphalerite and brittle sulfur lead antimony ore.
  • the classic inhibition methods of iron sphalerite include: cyanide method, sulfide method and sulfur oxide compound (sulfite) method. These are all inorganic agents, which generally have problems of poor selectivity and large dosage. Some even have Highly toxic. Therefore, the development of a new highly selective inhibitor is particularly important for lead and zinc separation. Organic inhibitors have specific functional groups and have different bonding abilities with different metal atoms, which points the way for efficient separation of lead and zinc.
  • the present invention provides a flotation agent and a flotation method for the iron sphalerite and the brittle sulfur lead antimony ore.
  • the use of organic agents as inhibitors has the advantages of strong selection and low dosage, and can achieve the separation of iron sphalerite and brittle sulfur lead antimony ore under the pH value of natural slurry.
  • the technical solution of the present invention is as follows: a flotation method of sphalerite and brittle sulfide lead antimony ore, using one of nitrilotriacetic acid, Congo red dye, thioglycolic acid or thiourea as the sphalerite inhibitor, The selection process for suppressing zinc and floating lead is adopted. The specific steps are:
  • Step (3) Add 300 to 900g/t of Congo red dye to the ore slurry to be separated, then add ethyl sulfide and a foaming agent. After the slurry is mixed, flotation is performed to obtain the lead coarse concentrate.
  • Step (3) Add 100-300g/t of thioglycolic acid to the other ore slurry to be separated, then add ethyl sulfide nitrogen and a foaming agent. After the slurry is mixed, flotation is performed to obtain the lead coarse concentrate.
  • Step (3) Add 300 ⁇ 900g/t of thiourea to the other slurry to be selected.
  • thiourea as an inhibitor, half of the ethyl sulfide must be added to the first, second and third selections on the basis of rough selection. Nitrogen, and then add ethyl sulfide nitrogen and frother. After the pulping is completed, flotation is performed to obtain the lead coarse concentrate.
  • the adsorption of the inhibitor on the surface of iron sphalerite is stronger than the adsorption on the surface of brittle sulfur lead antimony ore, making the iron sphalerite
  • the surface of zinc ore is hydrophilic, which promotes the flotation separation of iron sphalerite and brittle sulfur lead antimony ore.
  • the inhibitor used can selectively inhibit iron sphalerite under natural pH conditions, and the dosage is low, so it can be widely used in lead and zinc separation operations.
  • This type of inhibitor is simple to prepare, easily soluble in water, and easy to operate.
  • the mineral raw materials used are a lead-zinc mine in Guangxi.
  • Lead mainly exists in the form of brittle sulfur lead antimony ore
  • zinc mainly exists in the form of iron sphalerite.
  • the contents of antimony, lead, zinc, and iron in the ore are 0.20%, 0.40%, and 0.40% respectively. 2.05%, 7.32%
  • gangue minerals include quartz and calcite.
  • nitrilotriacetic acid is used as an inhibitor, and the specific operating steps are as follows:
  • the mineral raw materials used are a lead-zinc mine in Guangxi.
  • Lead mainly exists in the form of brittle sulfur lead antimony ore
  • zinc mainly exists in the form of iron sphalerite.
  • the contents of antimony, lead, zinc, and iron in the ore are 0.18%, 0.43%, and 0.43% respectively.
  • Gangue minerals include quartz, calcite, etc.
  • Congo red dye is used as an inhibitor.
  • the specific operating steps are as follows:
  • the mineral raw materials used are a lead-zinc mine in Guangxi.
  • Lead mainly exists in the form of brittle sulfur lead antimony ore
  • zinc mainly exists in the form of iron sphalerite.
  • the contents of antimony, lead, zinc, and iron in the ore are 0.30%, 0.51%, and 0.51% respectively. 2.96%, 9.35%.
  • Gangue minerals include quartz, calcite, etc.
  • thioglycolic acid is used as an inhibitor, and the specific operating steps are as follows:
  • the mineral raw materials used are a lead-zinc mine in Guangxi.
  • Lead mainly exists in the form of brittle sulfur lead antimony ore
  • zinc mainly exists in the form of iron sphalerite.
  • the contents of antimony, lead, zinc, and iron in the ore are 0.35%, 0.72%, and 0.72% respectively.
  • gangue minerals include quartz, calcite, etc.
  • thiourea is used as an inhibitor, and the specific operating steps are as follows:

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

A marmatite and jamesonite flotation method, comprising the following steps: (1) grinding lead-zinc ore containing jamesonite and marmatite to obtain a flotation ore pulp; (2) separately formulating four organic agents of nitrilotriacetic acid, Congo red dye, mercaptoacetic acid and thiourea into solutions having a mass concentration of 10% in a stirring barrel for later use; (3) quantitatively adding one of nitrilotriacetic acid, Congo red dye, mercaptoacetic acid or thiourea as an inhibitor into the ore pulp to be selected, then adding ethyl thio carbamate and a foaming agent, and carrying out flotation after pulp mixing is finished to obtain a lead rough concentrate; and (4) carrying out concentration operation three times on the obtained lead rough concentrate. The acting time of all the inhibitors is 6 min, and the acting time of ethyl thio carbamate and the acting time of the foaming agent are respectively 3 min and 1 min. The inhibitor used has good selectivity on marmatite, and efficient separation between jamesonite and marmatite can be achieved under a natural pH value.

Description

铁闪锌矿与脆硫铅锑矿浮选方法Flotation method of iron sphalerite and brittle sulfur lead antimony ore 技术领域Technical field
本发明涉及矿物加工技术领域，具体是一种铁闪锌矿与脆硫铅锑矿浮选药剂及浮选方法。The invention relates to the technical field of mineral processing, specifically a flotation agent and a flotation method for iron sphalerite and brittle sulfur lead antimony ore.
背景技术Background technique
铁闪锌矿和脆硫铅锑矿的分离是选矿中最为常见的。由于两者间的可浮性差异，选别原则流程大都是抑锌浮铅。为了获得合格精矿，必须去除铅精矿中的锌。The separation of iron sphalerite and brittle sulfide lead antimony ore is the most common in mineral processing. Due to the difference in floatability between the two, the selection principle process is mostly to suppress zinc and lead floating. In order to obtain a qualified concentrate, the zinc in the lead concentrate must be removed.
铁闪锌矿经典的抑制方法有：氰化物法、硫化物法和硫氧化合物(亚硫酸盐)法，这些都是无机药剂，普遍存在着选择性差，用量大的问题，有的甚至还有剧毒。因此，开发一种新型选择性高的抑制剂对于铅锌分离显得尤为重要。有机抑制剂由于具有特定的官能团，与不同的金属原子的键合能力存在差异，这为铅锌的高效分离带来了指明了方向。The classic inhibition methods of iron sphalerite include: cyanide method, sulfide method and sulfur oxide compound (sulfite) method. These are all inorganic agents, which generally have problems of poor selectivity and large dosage. Some even have Highly toxic. Therefore, the development of a new highly selective inhibitor is particularly important for lead and zinc separation. Organic inhibitors have specific functional groups and have different bonding abilities with different metal atoms, which points the way for efficient separation of lead and zinc.
发明内容Contents of the invention
为了能够使铁闪锌矿与脆硫铅锑矿得到有效分离，本发明提供一种铁闪锌矿与脆硫铅锑矿浮选药剂及浮选方法。采用有机药剂作为抑制剂，具有选择强，用量低的优点，可在自然矿浆pH值下实现铁闪锌矿和脆硫铅锑矿的分离。In order to effectively separate the iron sphalerite and the brittle sulfur lead antimony ore, the present invention provides a flotation agent and a flotation method for the iron sphalerite and the brittle sulfur lead antimony ore. The use of organic agents as inhibitors has the advantages of strong selection and low dosage, and can achieve the separation of iron sphalerite and brittle sulfur lead antimony ore under the pH value of natural slurry.
本发明的技术方案如下：一种铁闪锌矿与脆硫铅锑矿的浮选方法，采用氨三乙酸、刚果红染料、巯基乙酸或硫脲其中的一种作为铁闪锌矿抑制剂，采用抑锌浮铅的选别流程，具体步骤为：The technical solution of the present invention is as follows: a flotation method of sphalerite and brittle sulfide lead antimony ore, using one of nitrilotriacetic acid, Congo red dye, thioglycolic acid or thiourea as the sphalerite inhibitor, The selection process for suppressing zinc and floating lead is adopted. The specific steps are:
(1)将含脆硫铅锑矿和铁闪锌矿的铅锌矿石进行磨矿，使得-0.074mm含量为80～95％，得到浮选浓度为30～40％的浮选矿浆；(1) Grind the lead-zinc ore containing brittle sulfur lead-antimony ore and sphalerite so that the -0.074mm content is 80-95%, and obtain a flotation slurry with a flotation concentration of 30-40%;
(2)将氨三乙酸、刚果红染料、巯基乙酸、硫脲四种有机药剂分别在搅拌桶中配成质量浓度为10％溶液待用；(2) Prepare four organic agents, namely nitrilotriacetic acid, Congo red dye, thioglycolic acid, and thiourea, in a mixing barrel to prepare a solution with a mass concentration of 10% for use;
(3)在待选别的矿浆中加入氨三乙酸500～1000g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿；(3) Add 500 to 1000g/t of nitrilotriacetic acid to the ore slurry to be separated, then add ethyl sulfide and a foaming agent, and conduct flotation after the slurry mixing is completed to obtain the lead coarse concentrate;
(4)对获得的铅粗精矿进行三次精选作业，精选一、二、三抑制剂添加量在粗选的基础上依次减半，上述步骤所获得的中矿依次返回上一作业，所有抑制剂作用时间为6min，乙硫氮和起泡剂作用时间分别为3min和1min。(4) Carry out three beneficiation operations on the obtained rough lead concentrate, and the addition amount of the first, second and third inhibitors in the refining process will be halved successively on the basis of rough separation. The medium ore obtained in the above steps will be returned to the previous operation in turn. The action time of all inhibitors is 6 min, and the action time of ethyl sulfide nitrogen and foaming agent is 3 min and 1 min respectively.
步骤(3)在待选别的矿浆中加入刚果红染料300～900g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。Step (3) Add 300 to 900g/t of Congo red dye to the ore slurry to be separated, then add ethyl sulfide and a foaming agent. After the slurry is mixed, flotation is performed to obtain the lead coarse concentrate.
步骤(3)在待选别的矿浆中加入巯基乙酸100～300g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。Step (3) Add 100-300g/t of thioglycolic acid to the other ore slurry to be separated, then add ethyl sulfide nitrogen and a foaming agent. After the slurry is mixed, flotation is performed to obtain the lead coarse concentrate.
步骤(3)在待选别的矿浆中加入硫脲300～900g/t，在采用硫脲为抑制剂时，精选一、二、三还需在粗选的基础上添加减半的乙硫氮，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。Step (3) Add 300~900g/t of thiourea to the other slurry to be selected. When using thiourea as an inhibitor, half of the ethyl sulfide must be added to the first, second and third selections on the basis of rough selection. Nitrogen, and then add ethyl sulfide nitrogen and frother. After the pulping is completed, flotation is performed to obtain the lead coarse concentrate.
所述抑制剂在铁闪锌矿表面发生的吸附强于在脆硫铅锑矿表面的吸附，使得铁闪 锌矿表面亲水，进而促进铁闪锌矿和脆硫铅锑矿的浮选分离。The adsorption of the inhibitor on the surface of iron sphalerite is stronger than the adsorption on the surface of brittle sulfur lead antimony ore, making the iron sphalerite The surface of zinc ore is hydrophilic, which promotes the flotation separation of iron sphalerite and brittle sulfur lead antimony ore.
本发明具有以下优点：The invention has the following advantages:
(1)采用的抑制剂可在自然pH条件下对铁闪锌矿发挥选择性抑制作用，并且用量低，可广泛应用于铅锌分离作业。(1) The inhibitor used can selectively inhibit iron sphalerite under natural pH conditions, and the dosage is low, so it can be widely used in lead and zinc separation operations.
(2)该类抑制剂配制简单，易溶于水，操作方便。(2) This type of inhibitor is simple to prepare, easily soluble in water, and easy to operate.
具体实施方式Detailed ways
下面通过具体实施例对本发明的技术方案作进一步详细说明。The technical solution of the present invention will be further described in detail below through specific examples.
实施例1Example 1
所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.20％、0.40％、2.05％、7.32％，脉石矿物有石英、方解石。The mineral raw materials used are a lead-zinc mine in Guangxi. Lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.20%, 0.40%, and 0.40% respectively. 2.05%, 7.32%, gangue minerals include quartz and calcite.
本实施例以氨三乙酸作为抑制剂，具体操作步骤如下：In this embodiment, nitrilotriacetic acid is used as an inhibitor, and the specific operating steps are as follows:
(1)将氨三乙酸在常温条件下均配成浓度为10％的溶液；(1) Prepare nitrilotriacetic acid into a solution with a concentration of 10% under normal temperature conditions;
(2)将本实施例中的矿石进行磨矿作业，磨矿浓度为83％，浮选浓度为32％，(2) The ore in this example is subjected to grinding operation, the grinding concentration is 83%, and the flotation concentration is 32%.
在粗选时加入(1)中所配置好的铁闪锌矿组合抑制剂800g/t，之后再加入乙硫氮100g/t，起泡剂加入50g/t，进行脆硫铅锑矿下粗选作用，刮泡获得的泡沫产品进行精选作业，精选一、二、三作业中只添加铁闪锌矿组合抑制剂，分别为400g/t、200g/t、100g/t，扫选作业只加乙硫氮和起泡剂。中矿依次返回上一作业。采用该工艺流程，最终获得锑+铅品位为40.25％，回收率为80.26％，精矿产品中锌的含量为3.22％的选别指标。During rough selection, add 800g/t of the ferrozinc blende inhibitor combination configured in (1), then add 100g/t of ethyl sulfide nitrogen, and add 50g/t of foaming agent to coarsen the brittle sulfur lead-antimony ore. The foam products obtained by scraping are subjected to selection operations. In the first, second and third selection operations, only iron blende combined inhibitors are added, which are 400g/t, 200g/t and 100g/t respectively. Sweeping operation Add only ethyl sulfide and foaming agent. The mines return to the previous operation in turn. Using this process, the final antimony + lead grade was 40.25%, the recovery rate was 80.26%, and the zinc content in the concentrate product was 3.22%.
实施例2Example 2
所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.18％、0.43％、2.35％、8.11％。脉石矿物有石英、方解石等。The mineral raw materials used are a lead-zinc mine in Guangxi. Lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.18%, 0.43%, and 0.43% respectively. 2.35%, 8.11%. Gangue minerals include quartz, calcite, etc.
本实施例以刚果红染料作为抑制剂，具体操作步骤如下：In this example, Congo red dye is used as an inhibitor. The specific operating steps are as follows:
(1)将含脆硫铅锑矿和铁闪锌矿的铅锌矿石进行磨矿，使得-0.074mm含量为85％，得到浮选浓度为35％的浮选矿浆；(1) Grind the lead-zinc ore containing brittle sulfur lead-antimony ore and sphalerite so that the -0.074mm content is 85%, and obtain a flotation slurry with a flotation concentration of 35%;
(2)将刚果红染料在常温条件下置于搅拌桶中配成质量浓度为10％的溶液；(2) Place the Congo red dye in a stirring barrel under normal temperature conditions to prepare a solution with a mass concentration of 10%;
(3)在自然pH值条件下铅粗选中加入800g/t的刚果红染料，与矿浆作用6min，之后加入150g/t的乙硫氮和40g/t的起泡剂，分别作用3min和1min，调浆结束后进行浮选获得铅粗精矿；(3) Add 800g/t Congo red dye to the crude lead under natural pH conditions, and react with the slurry for 6 minutes. Then add 150g/t ethyl sulfide and 40g/t foaming agent for 3 minutes and 1 minute respectively. After the slurry mixing is completed, flotation is performed to obtain the lead coarse concentrate;
(4)对铅粗精矿进行精选作业，精选作业只添加刚果红染料，精选一、二、三作业的刚果红染料用量分别为400g/t、200g/t、100g/t。流程中的中矿依次返回上一作业。采用该工艺流程，最终获得锑+铅品位为40.56％，回收率为80.32％，精矿产品中锌的含量为3.57％的选别指标。(4) Conduct a beneficiation operation on the lead coarse concentrate. Only Congo red dye is added in the beneficiation operation. The dosage of Congo red dye in the first, second and third refining operations is 400g/t, 200g/t and 100g/t respectively. The middle mines in the process return to the previous operation in turn. Using this process, the final antimony + lead grade was 40.56%, the recovery rate was 80.32%, and the zinc content in the concentrate product was 3.57%.
实施例3Example 3
所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.30％、0.51％、2.96％、9.35％。脉石矿物有石英、方解石等。 The mineral raw materials used are a lead-zinc mine in Guangxi. Lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.30%, 0.51%, and 0.51% respectively. 2.96%, 9.35%. Gangue minerals include quartz, calcite, etc.
本实施例以巯基乙酸作为抑制剂，具体操作步骤如下：In this embodiment, thioglycolic acid is used as an inhibitor, and the specific operating steps are as follows:
(1)将含脆硫铅锑矿和铁闪锌矿的铅锌矿石进行磨矿，使得-0.074mm含量为90％，得到浮选浓度为36％的浮选矿浆；(1) Grind the lead-zinc ore containing brittle sulfur lead-antimony ore and sphalerite so that the -0.074mm content is 90%, and obtain a flotation slurry with a flotation concentration of 36%;
(2)将巯基乙酸在常温条件下置于搅拌桶中配成质量浓度为5％的溶液；(2) Place thioglycolic acid in a stirring barrel under normal temperature conditions to prepare a solution with a mass concentration of 5%;
(3)在自然pH值条件下铅粗选中加入240g/t的巯基乙酸，与矿浆作用6min，之后加入200g/t的乙硫氮和50g/t的起泡剂，分别作用3min和1min，调浆结束后进行浮选获得铅粗精矿；(3) Add 240g/t thioglycolic acid to the crude lead under natural pH conditions, and react with the slurry for 6 minutes. Then add 200g/t ethyl sulfide and 50g/t foaming agent for 3 minutes and 1 minute respectively, and adjust After the slurry is completed, flotation is performed to obtain the lead coarse concentrate;
(4)对铅粗精矿进行精选作业，精选作业只添加巯基乙酸，精选一、二、三作业的巯基乙酸用量分别为120g/t、60g/t、30g/t。流程中的中矿依次返回上一作业。采用该工艺流程，最终获得锑+铅品位为41.22％，回收率为81.48％，精矿产品中锌的含量为3.68％的选别指标。(4) Conduct a beneficiation operation on the lead coarse concentrate. Only thioglycolic acid is added in the beneficiation operation. The dosage of thioglycolic acid in the first, second and third beneficiation operations is 120g/t, 60g/t and 30g/t respectively. The middle mines in the process return to the previous operation in turn. Using this process, the final antimony + lead grade was 41.22%, the recovery rate was 81.48%, and the zinc content in the concentrate product was 3.68%.
实施例4Example 4
所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.35％、0.72％、0.40％、9.28％，脉石矿物有石英、方解石等。The mineral raw materials used are a lead-zinc mine in Guangxi. Lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.35%, 0.72%, and 0.72% respectively. 0.40%, 9.28%, gangue minerals include quartz, calcite, etc.
本实施例以硫脲作为抑制剂，具体操作步骤如下：In this embodiment, thiourea is used as an inhibitor, and the specific operating steps are as follows:
(1)将上述铅锌矿石进行磨矿，磨矿浓度为70％，使得-0.074mm含量为95％，得到浮选浓度为38％的浮选矿浆；(1) Grind the above-mentioned lead-zinc ore, the grinding concentration is 70%, so that the -0.074mm content is 95%, and a flotation slurry with a flotation concentration of 38% is obtained;
(2)将抑制剂硫脲在常温条件下置于搅拌桶中配成质量浓度为10％的溶液；(2) Place the inhibitor thiourea in a stirring barrel under normal temperature conditions to prepare a solution with a mass concentration of 10%;
(3)在自然pH值条件下铅粗选中加入800g/t的硫脲，与矿浆作用6min，之后加入350g/t的乙硫氮和50g/t的起泡剂，分别作用3min和1min，调浆结束后进行浮选获得铅粗精矿；(3) Add 800g/t thiourea to the crude lead under natural pH conditions, and react with the slurry for 6 minutes. Then add 350g/t ethyl sulfide and 50g/t foaming agent for 3 minutes and 1 minute respectively, and adjust After the slurry is completed, flotation is performed to obtain the lead coarse concentrate;
(4)对铅粗精矿进行精选作业，精选作业添加硫脲和乙硫氮，作用时间分别为6min和3min，精选一、二、三作业的硫脲和乙硫氮用量根据粗选用量依次减半，药剂作用时间不变。流程中的中矿依次返回上一作业。采用该工艺流程，最终获得锑+铅品位为41.68％，回收率为82.12％，铅精矿产品中锌的含量为3.54％的选别指标。 (4) Conduct a beneficiation operation on the lead coarse concentrate. Add thiourea and ethyl sulfur nitrogen in the beneficiation operation. The action time is 6 min and 3 min respectively. The dosage of thiourea and ethyl sulfur nitrogen in the first, second and third refining operations shall be based on the roughness. The dosage is halved successively, and the action time of the medicine remains unchanged. The middle mines in the process return to the previous operation in turn. Using this process, the final antimony + lead grade was 41.68%, the recovery rate was 82.12%, and the zinc content in the lead concentrate product was 3.54%.

Claims (8)

  1. 一种铁闪锌矿与脆硫铅锑矿浮选方法，其特征在于，采用氨三乙酸、刚果红染料、巯基乙酸或硫脲其中的一种作为铁闪锌矿抑制剂，采用抑锌浮铅的选别流程，具体步骤为：A flotation method for iron sphalerite and brittle sulfur lead antimony ore, which is characterized in that one of nitrilotriacetic acid, Congo red dye, thioglycolic acid or thiourea is used as the iron sphalerite inhibitor, and zinc-inhibited flotation is used. The specific steps of lead selection process are:
    (1)将含脆硫铅锑矿和铁闪锌矿的铅锌矿石进行磨矿，使得-0.074mm含量为80～95％，得到浮选浓度为30～40％的浮选矿浆；(1) Grind the lead-zinc ore containing brittle sulfur lead-antimony ore and sphalerite so that the -0.074mm content is 80-95%, and obtain a flotation slurry with a flotation concentration of 30-40%;
    (2)将氨三乙酸、刚果红染料、巯基乙酸、硫脲四种有机药剂分别在搅拌桶中配成质量浓度为10％溶液待用；(2) Prepare four organic agents, namely nitrilotriacetic acid, Congo red dye, thioglycolic acid, and thiourea, in a mixing barrel to prepare a solution with a mass concentration of 10% for use;
    (3)在待选别的矿浆中加入氨三乙酸500～1000g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿；(3) Add 500 to 1000g/t of nitrilotriacetic acid to the ore slurry to be separated, then add ethyl sulfide and a foaming agent, and conduct flotation after the slurry mixing is completed to obtain the lead coarse concentrate;
    (4)对获得的铅粗精矿进行三次精选作业，精选一、二、三抑制剂添加量在粗选的基础上依次减半，上述步骤所获得的中矿依次返回上一作业，所有抑制剂作用时间为6min，乙硫氮和起泡剂作用时间分别为3min和1min。(4) Carry out three beneficiation operations on the obtained rough lead concentrate, and the addition amount of the first, second and third inhibitors in the refining process will be halved successively on the basis of rough separation. The medium ore obtained in the above steps will be returned to the previous operation in turn. The action time of all inhibitors is 6 min, and the action time of ethyl sulfide nitrogen and foaming agent is 3 min and 1 min respectively.
  2. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，步骤(3)在待选别的矿浆中加入刚果红染料300～900g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1, characterized in that, in step (3), 300-900g/t of Congo red dye is added to the ore slurry to be separated, and then ethyl sulfide is added. Nitrogen and frother, flotation is carried out after the slurry mixing is completed to obtain the lead coarse concentrate.
  3. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，步骤(3)在待选别的矿浆中加入巯基乙酸100～300g/t，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。The flotation method of iron sphalerite and brittle sulfide lead antimony ore according to claim 1, characterized in that step (3) adds 100 to 300 g/t of thioglycolic acid to the ore slurry to be separated, and then adds ethyl sulfide nitrogen. and foaming agent, and flotation is performed after the slurry mixing is completed to obtain the lead coarse concentrate.
  4. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，步骤(3)在待选别的矿浆中加入硫脲300～900g/t，在采用硫脲为抑制剂时，精选一、二、三还需在粗选的基础上添加减半的乙硫氮，之后加入乙硫氮和起泡剂，调浆结束后进行浮选获得铅粗精矿。The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1, characterized in that, in step (3), 300-900g/t of thiourea is added to the ore slurry to be separated, and thiourea is used as the When using inhibitors, the first, second, and third selections need to add half of the ethyl sulfide nitrogen on the basis of rough selection, and then add ethyl sulfide nitrogen and a foaming agent. After the slurry mixing is completed, flotation is performed to obtain the lead coarse concentrate.
  5. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.20％、0.40％、2.05％、7.32％，脉石矿物有石英、方解石。The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1 is characterized in that the mineral raw material used is a lead-zinc ore in Guangxi, lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron It exists in the form of sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.20%, 0.40%, 2.05%, and 7.32% respectively. The gangue minerals include quartz and calcite.
  6. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.18％、0.43％、2.35％、8.11％。脉石矿物有石英、方解石。The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1 is characterized in that the mineral raw material used is a lead-zinc ore in Guangxi, lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron It exists in the form of sphalerite, and the contents of antimony, lead, zinc, and iron in the ore are 0.18%, 0.43%, 2.35%, and 8.11% respectively. Gangue minerals include quartz and calcite.
  7. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.30％、0.51％、2.96％、9.35％。脉石矿物有石英、方解石。The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1 is characterized in that the mineral raw material used is a lead-zinc ore in Guangxi, lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron It exists in the form of sphalerite, and the contents of antimony, lead, zinc, and iron in the ore are 0.30%, 0.51%, 2.96%, and 9.35% respectively. Gangue minerals include quartz and calcite.
  8. 根据要求1所述的铁闪锌矿与脆硫铅锑矿的浮选方法，其特征在于，所用矿物原料为广西某铅锌矿，铅主要以脆硫铅锑矿形式存在，锌主要以铁闪锌矿形式存在，矿石中锑、铅、锌、铁的含量分别为0.35％、0.72％、0.40％、9.28％，脉石矿物有石英、方解石。 The flotation method of iron sphalerite and brittle sulfur lead antimony ore according to claim 1 is characterized in that the mineral raw material used is a lead-zinc ore in Guangxi, lead mainly exists in the form of brittle sulfur lead antimony ore, and zinc mainly exists in the form of iron It exists in the form of sphalerite. The contents of antimony, lead, zinc, and iron in the ore are 0.35%, 0.72%, 0.40%, and 9.28% respectively. The gangue minerals include quartz and calcite.
PCT/CN2023/073958 2022-05-05 2023-01-31 Marmatite and jamesonite flotation method WO2023213100A1 (en)

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