WO2008144967A1 - A method for recovery and production of ultrafine zinc powder - Google Patents

A method for recovery and production of ultrafine zinc powder Download PDF

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Publication number
WO2008144967A1
WO2008144967A1 PCT/CN2007/002230 CN2007002230W WO2008144967A1 WO 2008144967 A1 WO2008144967 A1 WO 2008144967A1 CN 2007002230 W CN2007002230 W CN 2007002230W WO 2008144967 A1 WO2008144967 A1 WO 2008144967A1
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Prior art keywords
zinc
powder
solution
recovering
leaching
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PCT/CN2007/002230
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French (fr)
Chinese (zh)
Inventor
Yang Yu
Yongli Li
Guilong Li
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Yu, Jun
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Publication of WO2008144967A1 publication Critical patent/WO2008144967A1/en

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C5/00—Electrolytic production, recovery or refining of metal powders or porous metal masses
    • C25C5/02—Electrolytic production, recovery or refining of metal powders or porous metal masses from solutions
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C22B7/008—Wet processes by an alkaline or ammoniacal leaching
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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 a preparation method of ultrafine zinc powder, in particular to a method for preparing ultrafine zinc powder by using zinc powder containing blast furnace dust or the like.
  • Ironmaking blast furnace soot is an intermediate product with low zinc content but harmful to iron making. Because it is returned to the blast furnace, it is easy to generate a furnace to cause harm to the production, and it is not only polluting the environment but also wasting resources. A variety of recycling methods have emerged for a long time. The main two categories (1) are small proportions of iron ore to recover iron, and zinc slag is discarded. (2) Roasting and volatilizing The dust is reduced at 1600 °C in a rotary kiln, and zinc is oxidized and recovered from the gas phase, and the iron slag is discarded. The above method recovers only one metal and the product is still the raw material.
  • Zinc-containing powders such as cobalt slag and molten slag in the wet zinc smelting process, zinc powder in the vertical tank zinc smelting process, blue powder, zinc powder which is not condensed into liquid zinc during electrothermal smelting, etc. , are running between 10% and 90%.
  • Patent Application Publication No. CN1817518A discloses a method for producing metal zinc powder by using zinc dust or zinc dross, leaching zinc-containing powder with a strong alkali solution, filtering and precipitating lead with sodium sulfide, etc., and then electrolytically depositing Zinc powder has many operating steps.
  • the separation of lead in zinc-containing powder can only be used as a raw material for lead smelting and cannot be directly used as a product.
  • Zinc powder is an important raw material in the metallurgy and paint industry. There are two main methods for preparing zinc powder. (1) One is to atomize the metal zinc liquid and rapidly cool it. (2) Adding metal zinc liquid Hot gas, rapid cooling. The zinc powder produced by the above method is difficult to produce a particle size of less than 47 ⁇ m, and the raw material must be metal zinc. Summary of the invention
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a method for preparing ultrafine zinc powder from a zinc-containing powder such as blast furnace dust or the like which is simple in process, convenient in operation and low in cost.
  • a method for recovering and preparing ultrafine zinc powder from a zinc-containing powder material comprising the following steps:
  • the zinc powder is dehydrated and then dried with a volatile liquid to obtain ultra-fine zinc powder of different particle size grades, and the volatile liquid is recycled and recycled;
  • a strong alkali solution having a concentration of 50 g/L or more is used as a raw material for leaching.
  • a sodium hydroxide solution having a concentration greater than or equal to 50 g/L is used as the leaching material.
  • ammonia water having a concentration greater than or equal to 10% or more is used as the leaching material.
  • the solid-liquid separation is carried out by adding a flocculant to the mixed liquid after leaching and then filtering.
  • the flocculating agent is a polyacrylamide flocculant or an inorganic flocculant.
  • the primary electrolysis voltage is 2 to 3 V and the current density is 10 to 100 A/m 2 .
  • the deep electrolytic voltage is 3 to 5 V, and the current density is 200 to 1800 A/m 2 .
  • the method of the invention not only avoids the environmental pollution problem caused by the waste of zinc-containing dust or slag, but also fully recycles and utilizes the obtained zinc powder with a particle size of not more than 47 micrometers, which is a high-quality raw material for the paint industry and the like;
  • the process conditions are easy to control, and the material input of the whole process becomes the target product or industrial raw material. There is no waste discharge, and it will not cause environmental pollution.
  • Figure 1 is a flow chart of the invention for recovering and preparing ultrafine zinc powder from a zinc-containing powder.
  • Example 1 The invention is illustrated by the following examples, but the examples do not constitute any limitation of the invention.
  • Example 1 The invention is illustrated by the following examples, but the examples do not constitute any limitation of the invention.
  • the zinc-containing powder is 100 kg of blast furnace soot.
  • the main component is: zinc 16.1% (mass percent, the same below), lead 1.13%, manganese 1.21%.
  • the powder was subjected to wet ball milling, sieved through 60 mesh, and settled to obtain 130 kg of slag, and the water was recycled.
  • the supernatant is filtered, and the filter residue is used as a smelting raw material to recover metal.
  • the obtained electrolyte is 1.
  • the positive electrical impurity metal such as lead is removed at a temperature of 2.2 volts at 20 amps/m 2 .
  • the voltage was increased to 3.2 volts to control the current density of 500 amps/m2, and after electrolysis for 2 hours, 17.40 kg of wet zinc powder was scraped off. It was washed with a volatile solvent such as absolute ethanol and dried to obtain 15.11 kg of dry zinc powder, which all passed through a 325 mesh sieve.
  • the zinc content is 99.35%, and the metal zinc content is 98.33%, which meets the standard of the first metal zinc powder.
  • the lye after electrolysis is used for deep leaching to separate the supernatant from the supernatant, and the leached mixture separates the supernatant as a leaching material for recycling, and the underflow is pressure-filtered, and the filtrate is used as a leaching material and filter residue.
  • the metal is recovered as a raw material for smelting.
  • the zinc-containing powder is 100 kg of blast furnace soot.
  • the main component is: zinc 12.1% (mass percentage, the same below), lead 1. 75%, manganese 1.93%.
  • a 20% (mass%) aqueous ammonia was used as the leaching material.
  • the procedure is similar to that of Embodiment 1.
  • the voltage is 3V
  • the current density is lOOA/m 2
  • the positive electrical impurity metal such as lead is 2.27 kg.
  • the deep electrolysis voltage was 5 V
  • the current density was 1800 A/m 2
  • the dry zinc powder was 11.08 kg.
  • the zinc powder was all passed through a 325 mesh sieve.
  • the total zinc content is 99.22%, and the metal zinc content is 97.96%, reaching the primary metal zinc powder standard.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A method for recovery and production of ultrafine zinc powder from zinc-containing dust involves steps as follows: adding zinc-containing dust into alkaline solution, stirring the solution at the temperature 20?~60? and separating the solid and the liquid after zinc is leached into the solution; primary electrolyzing the obtained solution at the condition of a lower voltage and a lower current density to reduce the metals whose electro-positivity is higher than that of zinc and recovering the reduced metals; increasing the voltage and the current density to electrolyze intensively the solution obtained after the primary electrolysis so as to zinc powder being deposited on the cathode, and recycling the alkaline solution to the leaching stage; treating the obtained zinc powder with highly volatile liquid to dehydrolyze and dry it so as to obtaining pure and dry ultrafine zinc powder with different particle diameters, and recycling the highly volatile liquid; intensively leaching the metals that have not been leached by alkali and recovering them as raw material in smelting, while recycling the leach solution that contains lower content of zinc to the leaching stage.

Description

从含锌粉料中回收并制取超细锌粉的方法 技术领域  Method for recovering and preparing ultrafine zinc powder from zinc-containing powder
本发明涉及超细锌粉的制备方法， 尤其涉及一种以高炉烟尘等含 锌粉料制备超细锌粉方法。  The invention relates to a preparation method of ultrafine zinc powder, in particular to a method for preparing ultrafine zinc powder by using zinc powder containing blast furnace dust or the like.
背景技术 Background technique
炼铁高炉烟尘是含锌较低， 但对炼铁有害的中间产品， 因为再返 回高炉， 易于生成炉瘤给生产带来危害， 而将其废弃不但污染环境， 也浪费资源。 长期以来出现多种回收利用方法。 主要两类 （1 ) 小比 例配进铁矿回收铁， 锌渣弃掉。 （2)焙烧挥发将尘在回转炉中 1600 度使锌还原， 从气相中氧化回收锌， 铁渣弃掉。 以上方法仅回收一种 金属， 且产品仍是原料。  Ironmaking blast furnace soot is an intermediate product with low zinc content but harmful to iron making. Because it is returned to the blast furnace, it is easy to generate a furnace to cause harm to the production, and it is not only polluting the environment but also wasting resources. A variety of recycling methods have emerged for a long time. The main two categories (1) are small proportions of iron ore to recover iron, and zinc slag is discarded. (2) Roasting and volatilizing The dust is reduced at 1600 °C in a rotary kiln, and zinc is oxidized and recovered from the gas phase, and the iron slag is discarded. The above method recovers only one metal and the product is still the raw material.
含锌粉料如湿法炼锌工艺的除钴渣、熔铸渣，竖罐炼锌工艺的锌 粉、兰粉，电热法冶炼中未冷凝成液态锌的锌粉等，含锌量波动较大， 均奔 10%〜90%之间。 目前多用于生产硫酸锌、 氯化锌或返回炼锌工 艺生产锌锭。  Zinc-containing powders such as cobalt slag and molten slag in the wet zinc smelting process, zinc powder in the vertical tank zinc smelting process, blue powder, zinc powder which is not condensed into liquid zinc during electrothermal smelting, etc. , are running between 10% and 90%. Currently used to produce zinc sulphate, zinc chloride or return to the zinc smelting process to produce zinc ingots.
公开号为 CN1817518A的专利申请公开了一种用锌粉尘或锌浮渣 生产金属锌粉的方法，用强碱溶液浸取含锌粉料，过滤后用硫化钠等 将铅沉淀， 再电解沉积得到锌粉， 其操作步骤多， 含锌粉料中的铅分 离出来只能作为炼铅的原料， 不能直接作为产品。  Patent Application Publication No. CN1817518A discloses a method for producing metal zinc powder by using zinc dust or zinc dross, leaching zinc-containing powder with a strong alkali solution, filtering and precipitating lead with sodium sulfide, etc., and then electrolytically depositing Zinc powder has many operating steps. The separation of lead in zinc-containing powder can only be used as a raw material for lead smelting and cannot be directly used as a product.
锌粉是冶金、油漆行业的重要原料，现有锌粉制备主要有两种方 法。 （1 )一种是将金属锌液体雾化， 快速冷却。 （2)将金属锌液体加 热成气体， 快速冷却。 以上方法生产的锌粉， 想产出粒径小于 47微 米比较困难， 且原料须用金属锌。 发明内容 Zinc powder is an important raw material in the metallurgy and paint industry. There are two main methods for preparing zinc powder. (1) One is to atomize the metal zinc liquid and rapidly cool it. (2) Adding metal zinc liquid Hot gas, rapid cooling. The zinc powder produced by the above method is difficult to produce a particle size of less than 47 μm, and the raw material must be metal zinc. Summary of the invention
本发明的目的是克服现有技术的不足， 提供一种过程简单、 操作 方便以及成本低的以高炉烟尘等含锌粉料制备超细锌粉的方法。  SUMMARY OF THE INVENTION The object of the present invention is to overcome the deficiencies of the prior art and to provide a method for preparing ultrafine zinc powder from a zinc-containing powder such as blast furnace dust or the like which is simple in process, convenient in operation and low in cost.
实现以上目的的技术方案为：  The technical solution to achieve the above objectives is:
一种从含锌粉料中回收并制取超细锌粉的方法， 包括如下步骤： A method for recovering and preparing ultrafine zinc powder from a zinc-containing powder material, comprising the following steps:
( 1 )将含锌粉料加到碱溶液中， 在 20°C〜60°C温度搅拌下使锌 浸入到溶液中， 固液分离； (1) adding the zinc-containing powder to the alkali solution, immersing the zinc into the solution under stirring at a temperature of 20 ° C to 60 ° C, and separating the solid and liquid;
(2)在低电压、低电流密度条件下初级电解所得溶液， 溶液中较 锌更正电性的杂质金属被还原并回收；  (2) a solution obtained by primary electrolysis under conditions of low voltage and low current density, wherein the impurity metal in the solution which is more positive than zinc is reduced and recovered;
(3 )提高电压及电流密度深度电解经初级电解后的溶液，在阴极 上沉积获得锌粉， 碱溶液循环作为浸取原料；  (3) increasing the voltage and current density, electrolyzing the solution after primary electrolysis, depositing zinc powder on the cathode, and circulating the alkali solution as a leaching material;
(4)锌粉用易挥发液体脱水再干燥得到纯净千燥的不同粒径级别 的超细锌粉， 易挥发液体回收循环使用；  (4) The zinc powder is dehydrated and then dried with a volatile liquid to obtain ultra-fine zinc powder of different particle size grades, and the volatile liquid is recycled and recycled;
(5 )深度浸出不被碱浸出的金属等渣料， 回收金属作冶炼原料， 同时获得含锌较低的浸出液供循环作为浸取原料。  (5) Deeply leaching a slag such as a metal which is not leached by alkali, recovering the metal as a smelting raw material, and simultaneously obtaining a leaching liquid having a lower zinc content for recycling as a leaching raw material.
在一种优选的技术方案中，用浓度大于或等于 50g/L的强碱溶液 作为浸取原料。  In a preferred embodiment, a strong alkali solution having a concentration of 50 g/L or more is used as a raw material for leaching.
在一种优选的技术方案中，用浓度大于或等于 50g/L的氢氧化钠 溶液作为浸取原料。 在一种优选的技术方案中，用浓度大于或等于 10%以上的氨水作 为浸取原料。 ' In a preferred embodiment, a sodium hydroxide solution having a concentration greater than or equal to 50 g/L is used as the leaching material. In a preferred embodiment, ammonia water having a concentration greater than or equal to 10% or more is used as the leaching material. '
在一种优选的技术方案中，所述固液分离为在浸取后混合液中加 入絮凝剂沉降再过滤。  In a preferred embodiment, the solid-liquid separation is carried out by adding a flocculant to the mixed liquid after leaching and then filtering.
在一种更优选的技术方案中，所述絮凝剂为聚丙烯酰胺絮凝剂或 无机絮凝剂。  In a more preferred embodiment, the flocculating agent is a polyacrylamide flocculant or an inorganic flocculant.
在一种优选的技术方案中， 初级电解电压为 2〜3V， 电流密度为 10〜100A/m2。 In a preferred embodiment, the primary electrolysis voltage is 2 to 3 V and the current density is 10 to 100 A/m 2 .
在一种优选的技术方案中， 深度电解电压为 3〜5V， 电流密度为 200〜1800A/m2。 In a preferred embodiment, the deep electrolytic voltage is 3 to 5 V, and the current density is 200 to 1800 A/m 2 .
本发明的方法既避免了废弃含锌粉尘或渣所带来的环境污染问 题， 又使其得到充分回收和利用，所得到的锌粉粒度不大于 47微米， 是涂料行业等的优质原料；而且工艺条件易控制，整个过程的物料投 入均变成目标产品或工业原料， 没有废物排放， 不会造成环境污染。 附图说明  The method of the invention not only avoids the environmental pollution problem caused by the waste of zinc-containing dust or slag, but also fully recycles and utilizes the obtained zinc powder with a particle size of not more than 47 micrometers, which is a high-quality raw material for the paint industry and the like; The process conditions are easy to control, and the material input of the whole process becomes the target product or industrial raw material. There is no waste discharge, and it will not cause environmental pollution. DRAWINGS
图 1为本发明从含锌粉料回收及制备超细锌粉的流程图。  Figure 1 is a flow chart of the invention for recovering and preparing ultrafine zinc powder from a zinc-containing powder.
具体实施方式 detailed description
以下用实施例来说明本发明，但实施例不构成本发明的任何限制。 实施例 1  The invention is illustrated by the following examples, but the examples do not constitute any limitation of the invention. Example 1
含锌粉料为 100 公斤某炼铁厂的高炉烟尘， 其主要成分为： 锌 16. 19% (质量百分含量， 下同）， 铅 1. 13%, 锰 1. 21%。 将粉料经湿式 球磨后， 过 60目筛分， 沉降得到渣料 130公斤， 水循环使用。 加入 480克 /升氢氧化钠水溶液 800升， 搅拌 30分后加 6克聚丙烯酰胺絮 凝剂， 沉降后分离得到上清液 800升。将上清液过滤， 滤渣作为冶炼 原料回收金属。得到的滤液置入电解槽，在 2. 2伏 20安培 /平方米条 件下， 除去铅等较正电性杂质金属 1. 98公斤。 清除阴极板上杂质后 提高电压至 3. 2伏控制电流密度 500安培 /平方米， 电解 2小时后刮 下 17. 40公斤湿锌粉。用挥发性溶剂如无水乙醇洗涤、干燥得到 15. 11 公斤干锌粉， 该锌粉全部通过 325 目筛。 其中锌总含量为 99. 35%, 金属锌含量为 97. 83%， 达到一级金属锌粉标准。 电解后的碱液用来 深度浸取分离出上清液后的底流物，浸取后的混合物分离出上清液作 为浸取原料循环使用， 其底流物压滤， 滤液作为浸取原料， 滤渣作为 冶炼原料回收金属。 The zinc-containing powder is 100 kg of blast furnace soot. The main component is: zinc 16.1% (mass percent, the same below), lead 1.13%, manganese 1.21%. The powder was subjected to wet ball milling, sieved through 60 mesh, and settled to obtain 130 kg of slag, and the water was recycled. Join 800 liters of 480 g / liter of aqueous sodium hydroxide solution, after stirring for 30 minutes, 6 grams of polyacrylamide flocculant was added, and after sedimentation, 800 liters of the supernatant was obtained. The supernatant is filtered, and the filter residue is used as a smelting raw material to recover metal. The obtained electrolyte is 1. 98 volts, and the positive electrical impurity metal such as lead is removed at a temperature of 2.2 volts at 20 amps/m 2 . After removing the impurities on the cathode plate, the voltage was increased to 3.2 volts to control the current density of 500 amps/m2, and after electrolysis for 2 hours, 17.40 kg of wet zinc powder was scraped off. It was washed with a volatile solvent such as absolute ethanol and dried to obtain 15.11 kg of dry zinc powder, which all passed through a 325 mesh sieve. The zinc content is 99.35%, and the metal zinc content is 98.33%, which meets the standard of the first metal zinc powder. The lye after electrolysis is used for deep leaching to separate the supernatant from the supernatant, and the leached mixture separates the supernatant as a leaching material for recycling, and the underflow is pressure-filtered, and the filtrate is used as a leaching material and filter residue. The metal is recovered as a raw material for smelting.
实施例 2 Example 2
含锌粉料为 100 公斤某炼铁厂的高炉烟尘， 其主要成分为： 锌 12. 11% (质量百分含量， 下同）， 铅 1. 75%， 锰 1. 93%。 用 20% (质量百 分含量）的氨水作为浸取原料。 过程与实施例 1的相似。 初级电解过 程中， 电压为 3V， 电流密度为 lOOA/m2,得到铅等较正电性杂质金属 2. 27 公斤。 深度电解电压为 5V，电流密度为 1800A/m2，得到干锌粉 11. 08公斤该锌粉全部通过 325目筛。其中锌总含量为 99. 22%， 金属 锌含量为 97. 96%， 达到一级金属锌粉标准。 The zinc-containing powder is 100 kg of blast furnace soot. The main component is: zinc 12.1% (mass percentage, the same below), lead 1. 75%, manganese 1.93%. A 20% (mass%) aqueous ammonia was used as the leaching material. The procedure is similar to that of Embodiment 1. In the primary electrolysis process, the voltage is 3V, the current density is lOOA/m 2 , and the positive electrical impurity metal such as lead is 2.27 kg. The deep electrolysis voltage was 5 V, the current density was 1800 A/m 2 , and the dry zinc powder was 11.08 kg. The zinc powder was all passed through a 325 mesh sieve. The total zinc content is 99.22%, and the metal zinc content is 97.96%, reaching the primary metal zinc powder standard.
以上用实施例描述了本发明，但实施例不构成对本发明的任何限 制。在本发明权利要求范围内的任何变化或改动，均属于本发明的保 护范围。  The invention has been described above by way of examples, but the examples are not intended to limit the invention. Any changes or modifications within the scope of the claims of the invention are within the scope of the invention.

Claims

权利要求书 Claim
1. 一种从含锌粉料中回收并制取超细锌粉的方法， 包括如下步骤- 1. A method for recovering and preparing ultrafine zinc powder from a zinc-containing powder, comprising the following steps -
( 1 )将含锌粉料加到碱溶液中， 在 20°C~6(TC温度搅拌下使锌浸入 到溶液中， 固液分离； (1) adding the zinc-containing powder to the alkali solution, immersing the zinc into the solution at 20 ° C~6 (TC temperature stirring, solid-liquid separation;
(2 ) 在低电压、 低电流密度条件下初级电解所得溶液， 溶液中较锌 更正电性的杂质金属被还原并回收；  (2) The solution obtained by primary electrolysis under low voltage and low current density conditions, the impurity metal in the solution being more positively charged than zinc is reduced and recovered;
(3 )提高电压及电流密度深度电解经初级电解后的溶液， 在阴极上 沉积获得锌粉， 碱溶液循环作为浸取原料；  (3) increasing the voltage and current density, electrolyzing the solution after primary electrolysis, depositing zinc powder on the cathode, and circulating the alkali solution as a leaching material;
(4)锌粉用易挥发液体脱水再干燥得到纯净干燥的不同粒径级别的 超细锌粉， 易挥发液体回收循环使用；  (4) The zinc powder is dehydrated and then dried with a volatile liquid to obtain pure and dry ultra-fine zinc powder of different particle size grades, and the volatile liquid is recycled and recycled;
( 5 )深度浸出不被碱浸出的金属等渣料， 回收金属作冶炼原料， 同 时获得含锌较低的浸出液供循环作为浸取原料。  (5) Deeply leaching a slag of metal such as metal which is not leached by alkali, recovering the metal as a raw material for smelting, and simultaneously obtaining a leaching liquid having a lower zinc content for recycling as a raw material for leaching.
2. 根据权利要求 1所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于:用浓度大于或等于 50g/L的强碱溶液作为浸取原料。 The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 1, wherein a strong alkali solution having a concentration of 50 g/L or more is used as a raw material for leaching.
3.根据权利要求 2所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 用浓度大于或等于 50g/L的氢氧化钠溶液作为浸 取原料。 The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 2, wherein a sodium hydroxide solution having a concentration of 50 g/L or more is used as an leaching material.
4.根据权利要求 1所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 用浓度大于或等于 10%以上的氨水作为浸取原料。 The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 1, characterized in that ammonia water having a concentration of greater than or equal to 10% or more is used as a raw material for leaching.
5. 根据权利要求 1所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 所述固液分离为在浸取后混合液中加入絮凝剂沉降 再过滤。 5. The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 1, wherein the solid-liquid separation is carried out by adding a flocculant to the mixed liquid after leaching and then filtering.
6.根据权利要求 2所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 所述絮凝剂为聚丙烯酰胺絮凝剂或无机絮凝剂。The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 2, wherein the flocculating agent is a polyacrylamide flocculant or an inorganic flocculant.
7.根据权利要求 1所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 初级电解电压为 2〜3V， 电流密度为 10~100A/m2。 The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 1, wherein the primary electrolytic voltage is 2 to 3 V and the current density is 10 to 100 A/m 2 .
8.根据权利要求 1所述的从含锌粉料中回收并制取超细锌粉的方法， 其特征在于： 深度电解电压为 3〜5V， 电流密度为 200~1800A/m2。 The method for recovering and preparing ultrafine zinc powder from a zinc-containing powder according to claim 1, wherein the deep electrolytic voltage is 3 to 5 V and the current density is 200 to 1800 A/m 2 .
PCT/CN2007/002230 2007-05-29 2007-07-23 A method for recovery and production of ultrafine zinc powder WO2008144967A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101698952B (en) * 2009-10-30 2012-02-15 施熊飞 Process for preparing zinc powder by wet method
CN102234821A (en) * 2010-04-26 2011-11-09 于军 Method for recovering and preparing superfine lead powder, zinc powder and pure lead ingots and zinc ingots from lead- and zinc-containing materials
CN102776532B (en) * 2012-07-18 2015-02-18 同济大学 Method for preparing ultrafine zinc powder by adding aluminum-containing compound alkaline liquor through electrolysis
CN104593602A (en) * 2014-12-31 2015-05-06 上海第二工业大学 Method for extracting metallic lead from alkaline leaching solution of waste lead-containing glass
CN107858703A (en) * 2017-11-01 2018-03-30 四环锌锗科技股份有限公司 A kind of electrolysis additive formula and application method for improving solution of zinc sulfate electrolytic zinc quality and production environment
CN109763141B (en) * 2019-01-31 2021-02-05 白银原点科技有限公司 Multi-metal leaching and recycling process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329121B2 (en) * 1973-11-15 1978-08-18
CN1141956A (en) * 1996-05-10 1997-02-05 北京有色冶金设计研究总院 Method for production of zinc from material containing zinc
CN1341760A (en) * 2001-08-06 2002-03-27 邵家跃 Wet zinc smelting process
CN1817518A (en) * 2006-03-10 2006-08-16 同济大学 Production of metal zinc powder from zinc dust and zinc dross
CN101012514A (en) * 2006-12-30 2007-08-08 同济大学 Method for producing metallic lead and zinc by using lead-zinc containing waste slag or lead-zinc monoxide mine
EP1939138A1 (en) * 2006-12-08 2008-07-02 Shell Internationale Researchmaatschappij B.V. A process of increasing the hydrogen/carbon monoxide molar ratio in a synthesis gas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329121B2 (en) * 1973-11-15 1978-08-18
CN1141956A (en) * 1996-05-10 1997-02-05 北京有色冶金设计研究总院 Method for production of zinc from material containing zinc
CN1341760A (en) * 2001-08-06 2002-03-27 邵家跃 Wet zinc smelting process
CN1817518A (en) * 2006-03-10 2006-08-16 同济大学 Production of metal zinc powder from zinc dust and zinc dross
EP1939138A1 (en) * 2006-12-08 2008-07-02 Shell Internationale Researchmaatschappij B.V. A process of increasing the hydrogen/carbon monoxide molar ratio in a synthesis gas
CN101012514A (en) * 2006-12-30 2007-08-08 同济大学 Method for producing metallic lead and zinc by using lead-zinc containing waste slag or lead-zinc monoxide mine

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