WO2020029492A1 - Method for preparing metal powder by atomization - Google Patents

Method for preparing metal powder by atomization Download PDF

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WO2020029492A1
WO2020029492A1 PCT/CN2018/120004 CN2018120004W WO2020029492A1 WO 2020029492 A1 WO2020029492 A1 WO 2020029492A1 CN 2018120004 W CN2018120004 W CN 2018120004W WO 2020029492 A1 WO2020029492 A1 WO 2020029492A1
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Prior art keywords
liquid
metal powder
atomization
atomized
water
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PCT/CN2018/120004
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French (fr)
Chinese (zh)
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李晓雨
庞靖
高旭升
江志滨
纪杰
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青岛云路先进材料技术股份有限公司
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Publication of WO2020029492A1 publication Critical patent/WO2020029492A1/en

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    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid

Definitions

  • the invention relates to the field of atomizing and preparing metal powder, and in particular, to a method for atomizing and preparing metal powder.
  • the conventional gas atomization scheme is to use liquid gas such as liquid nitrogen, liquid argon, etc., vaporize it after heating, and use high temperature and high pressure gas to spray the liquid metal to atomize the metal into particles.
  • liquid gas such as liquid nitrogen, liquid argon, etc.
  • the gas atomization usually uses inert gas or high-pressure air.
  • the disadvantage is that the gas inert gas is pressurized to the liquid state, and the cost is increased, and the transportation is dangerous.
  • the object of the present invention is to provide a method for preparing metal powder by atomization, which solves the problem of high cost of preparing metal powder by atomization.
  • the present invention provides a method for preparing metal powder by atomization, including:
  • nebulizer Preliminarily heating and vaporizing the liquid nebulizer to obtain a gaseous nebulizer, wherein the nebulizer is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C;
  • the gaseous atomized substance is passed into an atomizing spray plate, and the metal liquid is gas atomized to obtain metal powder.
  • the aerosol is a substance having a boiling point in a range of 50 ° C to 200 ° C.
  • the atomized substance is ethanol or the atomized substance is a mixture of ethanol and water.
  • mist is water
  • liquid nebulizer Before the liquid nebulizer is heated and vaporized in advance, it also includes:
  • the raw water is purified by distillation, deoxidation, sterilization, and deionization to obtain purified liquid water.
  • the raw water is any one of tap water, sea water or distilled water.
  • passing the gaseous atomized substance into the atomizing spray disc, and performing gas atomizing on the metal liquid includes:
  • the metal liquid is atomized by the vaporized atomizer.
  • the method further includes:
  • the metal powder is subjected to a reduction reaction.
  • the method further includes:
  • the gaseous aerosol discharged from the atomizing disc is recovered.
  • the invention provides a method for preparing metal powder by atomization.
  • a substance that is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C is used as an atomization substance. Then, under normal temperature and pressure conditions, the atomization substance appears as Liquid state.
  • the present invention does not need to liquefy the mist from the gaseous state, thereby reducing the cost of obtaining a liquid mist; in addition, the mist at normal temperature and pressure It is liquid, so high-pressure transportation is not required during transportation, which reduces the transportation cost and the danger of transportation of the mist.
  • the method for preparing metal powder by atomization provided by the present invention can greatly reduce the material cost of the atomizer, thereby reducing the preparation cost of the metal powder.
  • FIG. 1 is a schematic flowchart of a method for preparing metal powder by atomization according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a partial structure of an atomizing tower according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a method for preparing metal powder by atomization according to an embodiment of the present invention.
  • the method may include:
  • Step S1 preliminarily heating and vaporizing the liquid nebulizer to obtain a gaseous nebulizer.
  • the mist in this embodiment refers to a substance that is liquid at normal temperature and pressure. Specifically, it may be a substance which is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C.
  • Step S2 the gaseous atomized substance is passed into an atomizing spray plate, and the metal liquid is gas-atomized to obtain a metal powder.
  • the gaseous atomized substance passes into the atomizing spray disc, the gaseous state of the atomized substance should be maintained; in addition, when the atomized substance atomizes the metal liquid
  • the atomizer sprays the metal liquid under a high pressure state, which is similar to the conventional atomization to prepare metal powder, which is not described in detail in the present invention.
  • FIG. 2 is a schematic diagram of a partial structure of an atomizing spray disc according to an embodiment of the present invention.
  • the metal liquid 2 flows downward from above the atomizing spray plate 1; meanwhile, the atomizing gas is injected into the metal liquid 2 through the air jet channel 3 on both sides where the metal liquid 2 flows down, and the metal liquid 2 is generated. The impact produces powdery metal.
  • a substance that is liquid at normal temperature and pressure is directly used as the aerosol, which is easier to obtain than a substance that is gaseous at normal temperature and pressure, and there is no need to liquefy the substance, which reduces the purchase cost of the mist and the transportation process There is also no need for high pressure and low temperature transportation.
  • the atomization used in the present invention can greatly reduce the acquisition cost of the atomization, and further reduce the cost of atomizing the metal powder.
  • the aerosol can be water, ethanol, or a mixture of water and ethanol, and the like.
  • a substance whose boiling point is not particularly high may be used as the atomized substance.
  • its boiling point should not be too low, otherwise it will be easier to volatilize.
  • it may further include:
  • the aerosol is a substance having a boiling point in the range of 50 ° C to 200 ° C.
  • the present invention does not exclude aerosols with a higher boiling point.
  • the use of an aerosol with a boiling point of 50 ° C to 200 ° C is a more preferred embodiment, which can reduce the vaporization of aerosolized liquid aerosols. cost.
  • the aerosol can be water.
  • the water used as the atomizer in this embodiment may be seawater, tap water, distilled water, or the like, which is easily available.
  • the method may further include:
  • the raw water is purified by distillation, deoxidation, sterilization, and deionization to obtain purified liquid water.
  • the liquid water is used as a nebulizer, and the metal powder is prepared by the user by atomization after gasification, which can effectively prevent the particles from being oxidized by oxygen and other impurities in the water.
  • the obtained metal powder may further include:
  • the metal powder is subjected to a reduction reaction.
  • the metal powder may be mixed with a reducing gas, a reduction reaction may occur under certain reaction conditions, and a more pure metal powder may be finally obtained.
  • it may further include:
  • the metal liquid is atomized by the vaporized atomizer.
  • metal atomization is required in a high temperature and high pressure environment.
  • the atomization can be performed at a pressure higher than 1.1 MPa and at a temperature higher than the boiling point of the atomizer.
  • a pressure of not less than 1.1 MPa may be used, but for substances such as ethanol, a pressure of 0.6 MPa or 0.7 MPa may also be used.
  • it may further include:
  • the gaseous atomized substance discharged from the atomizing spray disc is recovered.
  • mist is liquid at normal temperature and pressure
  • the temperature and pressure are reduced, and the mist can be liquefied into a liquid. It is easier to recycle than gaseous materials, which further saves costs.

Abstract

Disclosed is a method for preparing metal powder by atomization, Include: pressurizing and gasifying a liquid-state atomized substance in advance to obtain a gas-state atomized substance, wherein the atomized substance is in a liquid state at 10-30 ℃ under a standard atmospheric pressure; introducing the gas-state atomized substance into an atomization spray tray to perform gasification and atomization on a metal liquid to obtain metal powder. According to the present invention, it is unnecessary to perform liquidation on the atomized substance from the gas state, thereby reducing the cost of obtaining the liquid-state atomized substance; and furthermore, the atomized substance is in a liquid state at normal temperature under normal pressure, high-pressure transformation is not required in a transformation process, thereby reducing the transportation cost and the transportation danger of the atomized substance. According to the method for preparing metal powder by atomization, the material cost of the atomized substance is reduced to a great extent and the preparation cost of the metal powder is reduced.

Description

一种雾化制备金属粉末的方法Method for preparing metal powder by atomization
本申请要求于2018年8月10日提交中国专利局、申请号为201810909559.4、发明名称为“一种雾化制备金属粉末的方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 10, 2018, with application number 201810909559.4, and the invention name is "A Method for Atomizing Preparation of Metal Powder", the entire contents of which are incorporated herein by reference. Applying.
技术领域Technical field
本发明涉及雾化制备金属粉末领域，特别是涉及一种雾化制备金属粉末的方法。The invention relates to the field of atomizing and preparing metal powder, and in particular, to a method for atomizing and preparing metal powder.
背景技术Background technique
19世纪20年代，人们利用空气雾化制取有色金属粉末；20世纪50-60年代，气雾化工艺开始大规模用于生产金属及合金粉末；20世纪70年代末80年代初，随着计算机技术和现代控制技术的发展气雾化进入蓬勃发展的时期。In the 1820s, people used air atomization to prepare non-ferrous metal powders; in the 1950s and 1960s, the gas atomization process began to be used on a large scale to produce metal and alloy powders; in the late 1970s and early 1980s, with the computer The development of technology and modern control technology aerosolization has entered a period of vigorous development.
目前常规的气雾化方案，是采用液态气体如液氮、液氩等，经过加温后气化，利用高温高压气体对准喷向液态金属，使金属雾化成颗粒。At present, the conventional gas atomization scheme is to use liquid gas such as liquid nitrogen, liquid argon, etc., vaporize it after heating, and use high temperature and high pressure gas to spray the liquid metal to atomize the metal into particles.
现在气雾化都是多采用惰性气体，或高压空气等，缺点是从气态惰性气体到液态再进行加压，增加成本，且运输危险。At present, the gas atomization usually uses inert gas or high-pressure air. The disadvantage is that the gas inert gas is pressurized to the liquid state, and the cost is increased, and the transportation is dangerous.
发明内容Summary of the invention
本发明的目的是提供一种雾化制备金属粉末的方法，解决了雾化制备金属粉末的成本高的问题。The object of the present invention is to provide a method for preparing metal powder by atomization, which solves the problem of high cost of preparing metal powder by atomization.
为解决上述技术问题，本发明提供一种雾化制备金属粉末的方法，包括：To solve the above technical problems, the present invention provides a method for preparing metal powder by atomization, including:
预先将液态的雾化物加压加温气化，获得气态雾化物，其中，所述雾化物在10℃～30℃一个标准大气压下为液态；Preliminarily heating and vaporizing the liquid nebulizer to obtain a gaseous nebulizer, wherein the nebulizer is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C;
将气态的所述雾化物通入雾化喷盘中，对金属液体进行气体雾化，获得金属粉末。The gaseous atomized substance is passed into an atomizing spray plate, and the metal liquid is gas atomized to obtain metal powder.
其中，所述雾化物为沸点在50℃～200℃范围内的物质。The aerosol is a substance having a boiling point in a range of 50 ° C to 200 ° C.
其中，所述雾化物为乙醇或所述雾化物为乙醇和水的混合物。Wherein, the atomized substance is ethanol or the atomized substance is a mixture of ethanol and water.
其中，所述雾化物为水；Wherein, the mist is water;
在预先将液态的雾化物加压加温气化之前，还包括：Before the liquid nebulizer is heated and vaporized in advance, it also includes:
将原料水进行蒸馏除氧、杀菌、去离子的净化处理，获得净化后的液态的水。The raw water is purified by distillation, deoxidation, sterilization, and deionization to obtain purified liquid water.
其中，所述原料水为自来水、海水或蒸馏水中的任意一种水。Wherein, the raw water is any one of tap water, sea water or distilled water.
其中，所述将气态的所述雾化物通入雾化喷盘中，对金属液体进行气体雾化包括：Wherein, passing the gaseous atomized substance into the atomizing spray disc, and performing gas atomizing on the metal liquid includes:
在不小于1.1MPa的压力且不低于所述雾化物沸点的温度下，通过气化的所述雾化物对所述金属液体进行雾化。At a pressure of not less than 1.1 MPa and at a temperature of not less than the boiling point of the atomizer, the metal liquid is atomized by the vaporized atomizer.
其中，在所述对金属液体进行气体雾化，获得金属粉末之后，还包括：Wherein, after the gas atomizing the metal liquid to obtain the metal powder, the method further includes:
对所述金属粉末进行还原反应的处理。The metal powder is subjected to a reduction reaction.
其中，在所述对金属液体进行气体雾化，获得金属粉末之后，还包括：Wherein, after the gas atomizing the metal liquid to obtain the metal powder, the method further includes:
将从雾化喷盘中排出的气态的雾化物进行回收。The gaseous aerosol discharged from the atomizing disc is recovered.
本发明所提供的一种雾化制备金属粉末的方法，以在10℃～30℃一个标准大气压下为液态的物质作为雾化物，那么在常温常压的状态下，雾化物所呈现出来的是液体状态。相对于常温常压下为气态的惰性气体、氮气等而言，本发明中无需将雾化物由气态进行液化处理，进而降低了获得液态雾化物的成本；另外，雾化物常温常压下，即为液态，那么在运输过程中也无需采用高压运输，降低了雾化物的运输成本和运输的危险性。The invention provides a method for preparing metal powder by atomization. A substance that is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C is used as an atomization substance. Then, under normal temperature and pressure conditions, the atomization substance appears as Liquid state. Compared with inert gas, nitrogen, etc., which are gaseous at normal temperature and pressure, the present invention does not need to liquefy the mist from the gaseous state, thereby reducing the cost of obtaining a liquid mist; in addition, the mist at normal temperature and pressure It is liquid, so high-pressure transportation is not required during transportation, which reduces the transportation cost and the danger of transportation of the mist.
综上所述，本发明所提供的雾化制备金属粉末的方法，能够在很大程度上降低雾化物的材料成本，进而降低了金属粉末的制备成本。In summary, the method for preparing metal powder by atomization provided by the present invention can greatly reduce the material cost of the atomizer, thereby reducing the preparation cost of the metal powder.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附 图。In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.
图1为本发明实施例所提供的雾化制备金属粉末的方法流程示意图；FIG. 1 is a schematic flowchart of a method for preparing metal powder by atomization according to an embodiment of the present invention; FIG.
图2为本发明实施例提供的一种雾化塔的局部结构示意图。FIG. 2 is a schematic diagram of a partial structure of an atomizing tower according to an embodiment of the present invention.
具体实施方式detailed description
为了使本技术领域的人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。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。基于本发明中的实施例，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，都属于本发明保护的范围。In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
如图1所示，图1为本发明实施例所提供的雾化制备金属粉末的方法流程示意图，该方法可以包括：As shown in FIG. 1, FIG. 1 is a schematic flowchart of a method for preparing metal powder by atomization according to an embodiment of the present invention. The method may include:
步骤S1：预先将液态的雾化物加压加温气化，获得气态雾化物。Step S1: preliminarily heating and vaporizing the liquid nebulizer to obtain a gaseous nebulizer.
本实施例中的雾化物是指在常温常压下为液态的物质。具体地，可以是在10℃～30℃一个标准大气压下为液态的物质。The mist in this embodiment refers to a substance that is liquid at normal temperature and pressure. Specifically, it may be a substance which is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C.
步骤S2：将气态的雾化物通入雾化喷盘中，对金属液体进行气体雾化，获得金属粉末。Step S2: the gaseous atomized substance is passed into an atomizing spray plate, and the metal liquid is gas-atomized to obtain a metal powder.
需要说明的是，因为需要采用气体对金属液体进行雾化，所以在气态的雾化物通入雾化喷盘中时，应保持雾化物的气体状态；另外，雾化物对金属液体进行雾化时，是雾化物是在高压的状态下对金属液体进行喷射的，和常规的雾化制备金属粉末类似，对此本发明中不一一赘述。It should be noted that, because it is necessary to use a gas to atomize a metal liquid, when the gaseous atomized substance passes into the atomizing spray disc, the gaseous state of the atomized substance should be maintained; in addition, when the atomized substance atomizes the metal liquid The atomizer sprays the metal liquid under a high pressure state, which is similar to the conventional atomization to prepare metal powder, which is not described in detail in the present invention.
如图2所示，图2为本发明实施例提供的一种雾化喷盘的局部结构示意图。在进行金属雾化制粉时，金属液体2从雾化喷盘1上方向下流动；与此同时，在金属液体2流下的两侧通过喷气通道3喷入雾化气体，对金属液体2产生冲击，进而生成粉末状的金属。As shown in FIG. 2, FIG. 2 is a schematic diagram of a partial structure of an atomizing spray disc according to an embodiment of the present invention. During metal atomizing and powdering, the metal liquid 2 flows downward from above the atomizing spray plate 1; meanwhile, the atomizing gas is injected into the metal liquid 2 through the air jet channel 3 on both sides where the metal liquid 2 flows down, and the metal liquid 2 is generated. The impact produces powdery metal.
目前通常所使用的雾化气体大部分是氮气或其他惰性气体。但是这种气体在工业运输中往往需要先降温压缩成液态后，在低温高压下运输。首先将常温常压下成气态的液氮或液态的惰性气体液化，其成本就相对较高， 而且要保持液氮在运输过程中保持液化状态，运输成本也很高，最终导致雾化物的购买成本增高，进而导致了雾化制备金属粉末的成本增高。Most of the atomizing gases currently used are nitrogen or other inert gases. However, this gas often needs to be cooled and compressed into a liquid in industrial transportation, and then transported under low temperature and high pressure. First, liquefaction of liquid nitrogen or liquid inert gas that is gaseous at normal temperature and pressure is relatively expensive, and it is necessary to keep the liquid nitrogen in the liquefied state during transportation, and the transportation cost is also high, which ultimately leads to the purchase of atomized compounds. The increase in cost leads to an increase in the cost of atomizing the metal powder.
本发明中直接采用常温常压下即呈现液态的物质作为雾化物，相对于常温常压下呈现气态的物质更容易获得，且无需将物质进行液化，降低了雾化物的购买成本，且运输过程中也无需采用高压低温运输。In the present invention, a substance that is liquid at normal temperature and pressure is directly used as the aerosol, which is easier to obtain than a substance that is gaseous at normal temperature and pressure, and there is no need to liquefy the substance, which reduces the purchase cost of the mist and the transportation process There is also no need for high pressure and low temperature transportation.
由此可知，本发明中所采用的雾化物，能够在很大程度上降低了雾化物的获得成本，进而降低了雾化制备金属粉末的成本。Therefore, it can be known that the atomization used in the present invention can greatly reduce the acquisition cost of the atomization, and further reduce the cost of atomizing the metal powder.
可选地，在本发明的具体实施例中，该雾化物可以为水、乙醇或水和乙醇的混合物等等。Optionally, in a specific embodiment of the present invention, the aerosol can be water, ethanol, or a mixture of water and ethanol, and the like.
考虑到，在雾化制备金属粉末时，最终需要将雾化物气化。因此，为了降低将液态的雾化物气化为气态的雾化物的成本，可以采用沸点相对不是特别高的物质作为雾化物。当然，可以理解的是，其沸点也不应该太低，否则也比较容易挥发掉。It is considered that when preparing metal powder by atomization, it is necessary to finally vaporize the atomizer. Therefore, in order to reduce the cost of vaporizing a liquid atomized substance into a gaseous atomized substance, a substance whose boiling point is not particularly high may be used as the atomized substance. Of course, it can be understood that its boiling point should not be too low, otherwise it will be easier to volatilize.
因此，在本发明的另一具体实施例中，可以进一步的包括：Therefore, in another specific embodiment of the present invention, it may further include:
雾化物为沸点在50℃～200℃范围内的物质。The aerosol is a substance having a boiling point in the range of 50 ° C to 200 ° C.
当然，本发明中并不排除沸点更高的雾化物，本实施例中采用沸点为50℃～200℃的雾化物，是一种更为优选的实施例，能够降低气化液态的雾化物的成本。Of course, the present invention does not exclude aerosols with a higher boiling point. In this embodiment, the use of an aerosol with a boiling point of 50 ° C to 200 ° C is a more preferred embodiment, which can reduce the vaporization of aerosolized liquid aerosols. cost.
在本发明的另一具体实施例中，该雾化物可以是水。In another specific embodiment of the present invention, the aerosol can be water.
需要说明的是，相对于其他物质而言，水的价格相对而言更低。能够在很大程度上降低雾化物的成本。It should be noted that the price of water is relatively lower than other substances. Can greatly reduce the cost of atomization.
进一步地，本实施例中用作雾化物的水可以是海水、自来水或蒸馏水等等易于获得的水。Further, the water used as the atomizer in this embodiment may be seawater, tap water, distilled water, or the like, which is easily available.
可选地，为了避免水中含有杂质，在将水气化之前，还可以包括：Optionally, in order to avoid impurities in the water, before the water is gasified, the method may further include:
将原料水进行蒸馏除氧、杀菌、去离子的净化处理，获得净化后的液态的水。以该液态的水作为雾化物，气化后用户雾化制备金属粉末，能够有效防止水中的杂质粒子、氧气等对金属产生氧化作用。The raw water is purified by distillation, deoxidation, sterilization, and deionization to obtain purified liquid water. The liquid water is used as a nebulizer, and the metal powder is prepared by the user by atomization after gasification, which can effectively prevent the particles from being oxidized by oxygen and other impurities in the water.
进一步地，为了避免所获得的金属粉末在制备过程中不可避免的存在部分被氧化的情况，在获得金属粉末之后，还可以进一步地包括：Further, in order to avoid the situation where the obtained metal powder is partially oxidized during the preparation process, after the metal powder is obtained, it may further include:
对金属粉末进行还原反应的处理。具体地，也可以将金属粉末和具有还原性的气体混合，在一定的反应条件下发生还原反应，最终获得更为纯净的金属粉末。The metal powder is subjected to a reduction reaction. Specifically, the metal powder may be mixed with a reducing gas, a reduction reaction may occur under certain reaction conditions, and a more pure metal powder may be finally obtained.
基于上述任意实施例，在本发明的另一具体实施例中，可以进一步地包括：Based on any of the foregoing embodiments, in another specific embodiment of the present invention, it may further include:
在不小于1.1MPa的压力且不低于雾化物沸点温度下，通过气化的雾化物对金属液体进行雾化。At a pressure of not less than 1.1 MPa and not lower than the boiling point temperature of the atomizer, the metal liquid is atomized by the vaporized atomizer.
具体地，在气态雾化物对金属液体进行气化时，要保证雾化物不会液化。因此需要再高温高压的环境中进行金属雾化。具体地，可以采用高于1.1MPa的压力，高于雾化物沸点的温度下进行雾化。Specifically, when the metal liquid is gasified by the gaseous atomizer, it is necessary to ensure that the atomizer does not liquefy. Therefore, metal atomization is required in a high temperature and high pressure environment. Specifically, the atomization can be performed at a pressure higher than 1.1 MPa and at a temperature higher than the boiling point of the atomizer.
需要说明的是，对于雾化物是水的实施例中可以采用不小于1.1MPa的压力，但是对于乙醇等物质而言也可以采用0.6MPa或0.7MPa的压力。It should be noted that, in the embodiment where the mist is water, a pressure of not less than 1.1 MPa may be used, but for substances such as ethanol, a pressure of 0.6 MPa or 0.7 MPa may also be used.
可选地，在本发明的另一具体实施例中，可以进一步地包括：Optionally, in another specific embodiment of the present invention, it may further include:
在对金属液体进行高压气体雾化，获得金属粉末之后，将从雾化喷盘中排出的气态的雾化物进行回收。After the metal liquid is atomized with a high pressure gas to obtain a metal powder, the gaseous atomized substance discharged from the atomizing spray disc is recovered.
因为雾化物常温常压下为液态，当气态的雾化物从高温高压的雾化塔中排出时，温度和压强均下降，雾化物即可液化为液态。相对于气态物质而言更容易回收利用，从而进一步节省成本。Because the mist is liquid at normal temperature and pressure, when the gaseous mist is discharged from the high temperature and high pressure atomizing tower, the temperature and pressure are reduced, and the mist can be liquefied into a liquid. It is easier to recycle than gaseous materials, which further saves costs.
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同或相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on differences from other embodiments, and the same or similar parts between the various embodiments may refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part may refer to the description of the method.
以上对本发明所提供的雾化制备金属粉末的方法进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保 护范围内。The method for preparing metal powder by atomization provided by the present invention has been described in detail above. Specific examples are used herein to explain the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. It should be noted that, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (8)

  1. 一种雾化制备金属粉末的方法，其特征在于，包括：A method for preparing metal powder by atomization, comprising:
    预先将液态的雾化物加压加温气化，获得气态雾化物，其中，所述雾化物在10℃～30℃一个标准大气压下为液态；Preliminarily heating and vaporizing the liquid nebulizer to obtain a gaseous nebulizer, wherein the nebulizer is liquid at a standard atmospheric pressure of 10 ° C to 30 ° C;
    将气态的所述雾化物通入雾化喷盘中，对金属液体进行气体雾化，获得金属粉末。The gaseous atomized substance is passed into an atomizing spray plate, and the metal liquid is gas atomized to obtain metal powder.
  2. 根据权利要求1所述的方法，其特征在于，所述雾化物为沸点在50℃～200℃范围内的物质。The method according to claim 1, wherein the aerosol is a substance having a boiling point in a range of 50 ° C to 200 ° C.
  3. 根据权利要求2所述的方法，其特征在于，所述雾化物为乙醇或所述雾化物为乙醇和水的混合物。The method according to claim 2, wherein the aerosol is ethanol or the aerosol is a mixture of ethanol and water.
  4. 根据权利要求2所述的方法，其特征在于，所述雾化物为水；The method according to claim 2, wherein the atomized substance is water;
    在预先将液态的雾化物加压加温气化之前，还包括：Before the liquid nebulizer is heated and vaporized in advance, it also includes:
    将原料水进行蒸馏除氧、杀菌、去离子的净化处理，获得净化后的液态的水。The raw water is purified by distillation, deoxidation, sterilization, and deionization to obtain purified liquid water.
  5. 根据权利要求3所述的方法，其特征在于，所述原料水为自来水、海水或蒸馏水中的任意一种水。The method according to claim 3, wherein the raw water is any one of tap water, sea water, or distilled water.
  6. 根据权利要求3所述的方法，其特征在于，所述将气态的所述雾化物通入雾化喷盘中，对金属液体进行气体雾化包括：The method according to claim 3, wherein the passing the gaseous atomized matter into an atomizing spray disc and performing gas atomization on a metal liquid comprises:
    在不小于1.1MPa的压力且不小于雾化物沸点的温度下，通过气化的所述雾化物对所述金属液体进行雾化。At a pressure of not less than 1.1 MPa and a temperature of not less than the boiling point of the aerosol, the metal liquid is atomized by the vaporized aerosol.
  7. 根据权利要求3至5任一项所述的方法，其特征在于，在所述对金属液体进行气体雾化，获得金属粉末之后，还包括：The method according to any one of claims 3 to 5, after the gas atomizing the metal liquid to obtain a metal powder, further comprising:
    对所述金属粉末进行还原反应的处理。The metal powder is subjected to a reduction reaction.
  8. 根据权利要求1至6任一项所述的方法，其特征在于，在所述对金属液体进行气体雾化，获得金属粉末之后，还包括：The method according to any one of claims 1 to 6, characterized in that after the gas atomizing the metal liquid to obtain a metal powder, further comprising:
    将从雾化喷盘中排出的气态的雾化物进行回收。The gaseous aerosol discharged from the atomizing disc is recovered.
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