CN114522794A - Screening method for reducing content of crushed powder in plasma spheroidized powder - Google Patents
Screening method for reducing content of crushed powder in plasma spheroidized powder Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012216 screening Methods 0.000 title claims abstract description 19
- 239000011259 mixed solution Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 20
- 239000002244 precipitate Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 4
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 2
- 229920000193 polymethacrylate Polymers 0.000 claims 2
- 238000013019 agitation Methods 0.000 claims 1
- 238000000527 sonication Methods 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- DZGUJOWBVDZNNF-UHFFFAOYSA-N azanium;2-methylprop-2-enoate Chemical compound [NH4+].CC(=C)C([O-])=O DZGUJOWBVDZNNF-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/36—Devices therefor, other than using centrifugal force
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Abstract
Description
技术领域technical field
本发明涉及粉体筛分技术领域，尤其涉及一种降低等离子球化粉体中破碎粉体含量的筛分方法。The invention relates to the technical field of powder screening, in particular to a screening method for reducing the content of broken powder in plasma spheroidized powder.
背景技术Background technique
等离子体球化是制备组分均匀、球形度高、流动性好球形粉体的良好途径，其技术原理：利用热等离子的高温环境，载气将粉体送入高温等离子体中，粉体颗粒迅速吸热后表面(或整体)熔融，并在表面张力作用下缩聚成球形液滴，进入冷却室后骤冷凝固而将球形固定下来，从而获得球形粉体。但是得到的等离子球化粉体中存在破碎粉体，影响最终得到的粉体的使用性能。Plasma spheroidization is a good way to prepare spherical powder with uniform composition, high sphericity and good fluidity. After rapidly absorbing heat, the surface (or the whole) melts and polycondenses into spherical droplets under the action of surface tension. After entering the cooling chamber, it is quenched and solidified to fix the spherical shape, thereby obtaining spherical powder. However, there are broken powders in the obtained plasma spheroidized powder, which affects the performance of the finally obtained powder.
现有技术中通常采用过筛子的筛分方法，将破碎粉体予以剔除，然而粒径稍大于筛孔的非球形粉体，还是保留在了完整球形等离子球化粉体中，因此，对粒径较大的破碎粉体的去除效果不是很理想。In the prior art, the sieving method is usually adopted to remove the broken powder. However, the non-spherical powder with a particle size slightly larger than the sieve hole is still retained in the complete spherical plasma spheroidized powder. The removal effect of broken powder with larger diameter is not very ideal.
因此，亟需提供一种降低等离子球化粉体中破碎粉体含量的筛分方法。Therefore, there is an urgent need to provide a screening method for reducing the content of crushed powder in plasma spheroidized powder.
发明内容SUMMARY OF THE INVENTION
鉴于此，本发明的目的在于提供一种降低等离子球化粉体中破碎粉体含量的筛分方法，本发明提供的筛分方法，可以充分实现对等离子球化粉体中的破碎粉体的去除，从而得到完整球形等离子球化粉体。In view of this, the purpose of the present invention is to provide a screening method for reducing the content of broken powder in the plasma spheroidized powder. removed to obtain a complete spherical plasma spheroidized powder.
为了实现上述发明目的，本发明提供了以下技术方案：In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions:
本发明提供了一种降低等离子球化粉体中破碎粉体含量的筛分方法，包括以下步骤：The invention provides a screening method for reducing the content of broken powder in the plasma spheroidized powder, comprising the following steps:
(1)将待筛分等离子球化粉体、分散剂和水混合，得到混合溶液；(1) mixing plasma spheroidized powder to be screened, dispersant and water to obtain a mixed solution;
(2)将所述步骤(1)得到的混合溶液进行超声后分离，得到沉淀物；(2) ultrasonically separate the mixed solution obtained in the step (1) to obtain a precipitate;
(3)将所述步骤(2)得到的沉淀物重复步骤(1)和(2)的操作n次，得到完整球形等离子球化粉体；其中n≥0。(3) Repeating the operations of steps (1) and (2) for the precipitate obtained in the step (2) n times to obtain a complete spherical plasma spheroidized powder; wherein n≧0.
优选地，所述步骤(1)中的分散剂包括聚甲基丙烯酸铵、三聚磷酸钠、六偏磷酸钠和焦磷酸钠中的至少一种。Preferably, the dispersant in the step (1) includes at least one of polyammonium methacrylate, sodium tripolyphosphate, sodium hexametaphosphate and sodium pyrophosphate.
优选地，所述分散剂为聚甲基丙烯酸铵。Preferably, the dispersant is polyammonium methacrylate.
优选地，所述步骤(1)中的水和等离子球化粉体的体积比为(3～10)：1。Preferably, the volume ratio of water and plasma spheroidized powder in the step (1) is (3-10):1.
优选地，所述步骤(1)中的分散剂的体积占等离子球化粉体和水总体积的(1～3)％。Preferably, the volume of the dispersant in the step (1) accounts for (1-3)% of the total volume of the plasma spheroidized powder and water.
优选地，所述步骤(2)中的超声的温度为20～35℃。Preferably, the temperature of the ultrasound in the step (2) is 20-35°C.
优选地，所述步骤(2)中的超声的频率为(35～50)KHZ。Preferably, the frequency of the ultrasound in the step (2) is (35-50) KHZ.
优选地，所述步骤(2)中的超声的时间为5～20min。Preferably, the ultrasonic time in the step (2) is 5-20 min.
优选地，所述步骤(2)中的超声的同时，对所述混合溶液进行搅拌。Preferably, the mixed solution is stirred at the same time as the ultrasound in the step (2).
优选地，所述搅拌的时间和超声的时间相同。Preferably, the stirring time is the same as the ultrasonic time.
本发明提供了一种降低等离子球化粉体中破碎粉体含量的筛分方法，包括以下步骤：将待筛分等离子球化粉体、分散剂和水混合，得到混合溶液；然后将得到的混合溶液进行超声后分离，得到沉淀物；最后将得到的沉淀物重复上述操作n次，得到完整球形等离子球化粉体；其中n≥0。由于，破碎粉体的比表面积较大，容易在水中发生团聚，从而使破碎粉体的重量增加，导致其容易沉降到混合溶液底部；本发明通过在混合溶液中加入分散剂，提高破碎粉体在混合溶液中的分散性，从而避免漂浮在混合溶液中的破碎粉体发生团聚，进而避免其沉降到混合液底部，从而降低了等离子球化粉体中破碎粉体的含量。The invention provides a screening method for reducing the content of crushed powder in plasma spheroidized powder, comprising the following steps: mixing the plasma spheroidized powder to be sieved, a dispersant and water to obtain a mixed solution; The mixed solution is ultrasonically separated to obtain a precipitate; finally, the obtained precipitate is repeated n times to obtain a complete spherical plasma spheroidized powder; wherein n≥0. Because the specific surface area of the crushed powder is large, it is easy to agglomerate in water, so that the weight of the crushed powder increases, which causes it to easily settle to the bottom of the mixed solution. Dispersibility in the mixed solution, so as to avoid the agglomeration of the broken powder floating in the mixed solution, thereby preventing it from sinking to the bottom of the mixed solution, thereby reducing the content of the broken powder in the plasma spheroidized powder.
具体实施方式Detailed ways
本发明提供了一种降低等离子球化粉体中破碎粉体含量的筛分方法，包括以下步骤：The invention provides a screening method for reducing the content of broken powder in the plasma spheroidized powder, comprising the following steps:
(1)将待筛分等离子球化粉体、分散剂和水混合，得到混合溶液；(1) mixing plasma spheroidized powder to be screened, dispersant and water to obtain a mixed solution;
(2)将所述步骤(1)得到的混合溶液进行超声后分离，得到沉淀物；(2) ultrasonically separate the mixed solution obtained in the step (1) to obtain a precipitate;
(3)将所述步骤(2)得到的沉淀物重复步骤(1)和(2)的操作n次，得到完整球形等离子球化粉体；其中n≥0。(3) Repeating the operations of steps (1) and (2) for the precipitate obtained in the step (2) n times to obtain a complete spherical plasma spheroidized powder; wherein n≧0.
本发明将等离子球化粉体、分散剂和水混合，得到混合溶液。In the present invention, plasma spheroidized powder, dispersant and water are mixed to obtain a mixed solution.
在本发明中，所述待筛分等离子球化粉体优选为等离子球化完成后，收集到的球化后的粉体。在本发明中，所述待筛分等离子球化后的粉体中，除了完整球形粉体外，还存在破碎的粉体，其中破碎的粉体严重影响等离子球化粉体的后续使用，所以需要将其除去。In the present invention, the plasma spheroidized powder to be screened is preferably the spheroidized powder collected after the plasma spheroidization is completed. In the present invention, in the powder to be screened after plasma spheroidization, in addition to the complete spherical powder, there are also broken powder, wherein the broken powder seriously affects the subsequent use of the plasma spheroidized powder, so It needs to be removed.
在本发明中，所述分散剂优选包括聚甲基丙烯酸铵、三聚磷酸钠、六偏磷酸钠和焦磷酸钠中的至少一种，更优选为聚甲基丙烯酸铵。本发明通过在混合溶液中加入分散剂，提高破碎粉体在混合溶液中的分散性，从而避免漂浮在混合溶液中的破碎粉体发生团聚，进而避免其沉降到混合液底部，从而降低了等离子球化粉体中破碎粉体的含量，其中聚甲基丙烯酸铵不含磷，避免产生的废水中的磷对环境产生污染。In the present invention, the dispersing agent preferably includes at least one of polyammonium methacrylate, sodium tripolyphosphate, sodium hexametaphosphate and sodium pyrophosphate, more preferably polyammonium methacrylate. The present invention improves the dispersibility of the broken powder in the mixed solution by adding a dispersant to the mixed solution, thereby avoiding the agglomeration of the broken powder floating in the mixed solution, thereby preventing it from sinking to the bottom of the mixed solution, thereby reducing the plasma The content of the broken powder in the spheroidized powder, in which the polyammonium methacrylate does not contain phosphorus, so as to avoid the phosphorus in the generated waste water from polluting the environment.
在本发明中，所述水和等离子球化粉体的体积比优选为(3～10)：1，更优选为(5～7)：1。在本发明中，所述分散剂的体积优选占等离子球化粉体和水总体积的(1～3)％，更优选为(1.5～2.5)％。本发明将所述水和分散剂的用量控制在上述范围，可以实现对混合液中破碎粉体的充分分散，进而实现对等离子球化粉体中破碎粉体的悬浮，从而降低了等离子球化粉体中破碎粉体的含量。In the present invention, the volume ratio of the water and the plasma spheroidized powder is preferably (3-10):1, more preferably (5-7):1. In the present invention, the volume of the dispersant preferably accounts for (1-3)% of the total volume of the plasma spheroidized powder and water, more preferably (1.5-2.5)%. In the present invention, the dosage of the water and the dispersant is controlled within the above-mentioned range, which can realize the full dispersion of the crushed powder in the mixed solution, and then realize the suspension of the crushed powder in the plasma spheroidized powder, thereby reducing the plasma spheroidization. The content of broken powder in the powder.
得到混合溶液后，本发明优选将所述混合溶液进行超声，得到悬浮液，然后对所述悬浮液进行分离，得到沉淀物。After the mixed solution is obtained, in the present invention, the mixed solution is preferably sonicated to obtain a suspension, and then the suspension is separated to obtain a precipitate.
在本发明中，所述超声的温度优选为20～35℃，更优选为25℃；所述超声的频率优选为(35～50)KHZ，更优选为(30～40)KHZ；所述超声的时间优选为5～20min，更优选为10～15min。本发明将所述超声的参数限定在上述范围，有利于等离子球化粉体中破碎粉体和完整球形粉体的充分分离。In the present invention, the temperature of the ultrasonic is preferably 20-35°C, more preferably 25°C; the frequency of the ultrasonic is preferably (35-50) KHZ, more preferably (30-40) KHZ; the ultrasonic The time is preferably 5-20min, more preferably 10-15min. In the present invention, the parameters of the ultrasonic wave are limited to the above range, which is conducive to the sufficient separation of the broken powder and the complete spherical powder in the plasma spheroidized powder.
在本发明中，所述超声的同时，优选对所述混合的体系进行搅拌。在本发明中，所述搅拌的时间优选和超声的时间相同。本发明对所述搅拌的操作没有特殊规定，采用本领域技术人员熟知的搅拌方式，对溶液体系进行搅动即可。本发明通过超声同时配合对混合溶液进行搅拌，可以加快混合溶液中等离子球化粉体中破碎粉体和完整球形粉体的分离。In the present invention, the mixed system is preferably stirred at the same time of the ultrasonication. In the present invention, the stirring time is preferably the same as the ultrasonic time. The present invention has no special provisions on the stirring operation, and the solution system can be stirred by a stirring method well known to those skilled in the art. In the invention, the mixed solution is stirred at the same time by the ultrasonic wave, so that the separation of the broken powder and the complete spherical powder in the plasma spheroidized powder in the mixed solution can be accelerated.
本发明对所述分离的操作没有特殊规定，采用本领技术人员熟知的分离方式，将所述悬浮液中的悬浮物去除后，倒掉悬浮液中的水，得到沉淀即可。The present invention has no special provisions on the operation of the separation. The separation method well known to those skilled in the art is adopted. After removing the suspended matter in the suspension, the water in the suspension is poured out to obtain precipitation.
得到沉淀物后，本发明对所述沉淀物重复上述方案中所述混合溶液的制备和所述超声的操作n次后，得到完整球形等离子球化粉体的粗品，其中n≥0，优选n＝3。在本发明中，完成一次混合溶液的制备和所述超声的操作后，如果得到的沉淀物中还有破碎粉体，重复混合溶液的制备和所述超声的操作，直至沉淀物中不含有破碎粉体。After the precipitate is obtained, the present invention repeats the preparation of the mixed solution and the ultrasonic operation for the precipitate n times to obtain a crude product of the complete spherical plasma spheroidized powder, wherein n≥0, preferably n =3. In the present invention, after completing the preparation of the mixed solution and the ultrasonic operation, if there is still broken powder in the obtained precipitate, repeat the preparation of the mixed solution and the ultrasonic operation until the precipitate does not contain broken powder. powder.
得到完整球形等离子球化粉体的粗品后，本发明优选对所述粗品进行洗涤和干燥，得到完整球形等离子球化粉体。After obtaining the crude product of the complete spherical plasma spheroidized powder, the present invention preferably washes and dries the crude product to obtain the complete spherical plasma spheroidized powder.
本发明对所述洗涤的试剂没有特殊规定，采用本领域技术人员熟知的试剂将得到的完整球形等离子球化粉体上的分散剂去除即可。在本发明实施例中，所述洗涤的试剂优选为乙醇。本发明将价格相对较低的有机溶剂乙醇作为洗涤剂，不但可以将完整球形等离子球化粉体上的聚甲基丙烯酸铵去除，同时由于乙醇沸点相对较低，容易快速将得到的完整球形等离子球化粉体干燥完全。The present invention does not have special provisions on the washing reagent, and the dispersant on the obtained complete spherical plasma spheroidized powder can be removed by using reagents well known to those skilled in the art. In the embodiment of the present invention, the washing reagent is preferably ethanol. The invention uses the relatively low-priced organic solvent ethanol as the detergent, which can not only remove the polyammonium methacrylate on the spheroidized powder of the complete spherical plasma, but also can easily and quickly remove the obtained complete spherical plasma due to the relatively low boiling point of ethanol. The spheroidized powder is completely dry.
本发明对所述干燥的方式没有特殊规定，采用本领域技术人员熟知的干燥方式，将洗涤后的产物上的溶剂除去即可。The present invention does not specifically stipulate the drying method, and the solvent on the washed product can be removed by using a drying method well known to those skilled in the art.
本发明通过在混合溶液中加入分散剂，提高破碎粉体在混合溶液中的分散性，从而避免漂浮在混合溶液中的破碎粉体发生团聚，进而避免其沉降到混合液底部，从而降低了等离子球化粉体中破碎粉体的含量。The present invention improves the dispersibility of the broken powder in the mixed solution by adding a dispersant to the mixed solution, thereby avoiding the agglomeration of the broken powder floating in the mixed solution, thereby preventing it from sinking to the bottom of the mixed solution, thereby reducing the plasma The content of broken powder in spheroidized powder.
下面将结合本发明中的实施例，对本发明中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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。The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
实施例1Example 1
(1)取500g待筛分等离子球化完成后收集到的粉体加入1L烧杯中，向烧杯中加入粉体体积7倍的去离子水，再向烧杯中加入聚甲基丙烯酸铵，加入聚甲基丙烯酸铵的体积为水和等离子球化粉体体积之和的2％，得到混合溶液。(1) Take 500g of the powder collected after the sieving and plasma spheroidization is completed, add it to a 1L beaker, add deionized water that is 7 times the volume of the powder into the beaker, then add polyammonium methacrylate to the beaker, add polyamide The volume of ammonium methacrylate is 2% of the sum of the volume of water and plasma spheroidized powder to obtain a mixed solution.
(2)将所述步骤(1)得到的混合溶液放入超声波清洗机内，设置超声波清洗机中水温为25℃，超声频率为40KHZ，超声10min，与此同时，伴随着对混合溶液进行搅拌，得到悬浮液。(2) put the mixed solution obtained in the step (1) into the ultrasonic cleaning machine, set the water temperature in the ultrasonic cleaning machine to be 25 ° C, the ultrasonic frequency is 40KHZ, ultrasonic 10min, at the same time, accompanied by stirring the mixed solution , to obtain a suspension.
(3)利用水舀撇去所述步骤(2)得到的悬浮液中的悬浮物，倒去容器内的水，露出沉在容器底部的粉体；(3) utilize water scoop to skim off the suspended matter in the suspension that described step (2) obtains, pour out the water in the container, reveal the powder that sinks in the bottom of the container;
重复步骤(1)～(3)三次，利用无水乙醇清洗露出沉在容器底部的粉体，得到沉淀物。Repeat steps (1) to (3) three times, and use absolute ethanol to wash the exposed powder at the bottom of the container to obtain a precipitate.
(4)将所述步骤(3)得到的沉淀物用锡纸密封，放入80℃恒温烘箱内干燥24h，得到完整球形等离子球化粉体。(4) The precipitate obtained in the step (3) is sealed with tin foil, and dried in a constant temperature oven at 80° C. for 24 hours to obtain a complete spherical plasma spheroidized powder.
通过实施例1可以看出，在混合溶液中加入分散剂聚甲基丙烯酸铵，提高了破碎粉体的分散性，使其以悬浮物形式得到充分去除，最终得到了完整球形等离子球化粉体。It can be seen from Example 1 that adding the dispersant polyammonium methacrylate to the mixed solution improves the dispersibility of the crushed powder, so that it can be fully removed in the form of suspended solids, and finally a complete spherical plasma spheroidized powder is obtained. .
以上所述仅是本发明的优选实施方式，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，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115231615A (en) * | 2022-06-22 | 2022-10-25 | 季华实验室 | A kind of preparation method of nanostructured YSZ powder for additive manufacturing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838136A (en) * | 2010-05-14 | 2010-09-22 | 上海大豪纳米材料喷涂有限公司 | Preparation method of aluminium oxide and titanium dioxide compound ceramic powder |
| JP2011194344A (en) * | 2010-03-20 | 2011-10-06 | Fukumoto Giken:Kk | Method for separating and refining inorganic-type hollow fine-particle powder raw material, high-purity fine particle powder and separation refining apparatus |
| CN102489383A (en) * | 2011-12-02 | 2012-06-13 | 宝丰恒瑞新材料有限公司 | Dispersing agent used for silicon carbide micro powder water overflow grading and application method thereof |
| CN104087890A (en) * | 2014-07-18 | 2014-10-08 | 郑州高端装备与信息产业技术研究院有限公司 | Method for preparing ceramic coating lining of mud pump cylinder sleeve |
| CN204234313U (en) * | 2014-11-14 | 2015-04-01 | 北京科技大学 | A kind of disc type spherical powder screening plant |
| CN108993383A (en) * | 2018-07-16 | 2018-12-14 | 深圳市环球绿地新材料有限公司 | The preparation of spherical activated charcoal and screening technique |
| CN114555839A (en) * | 2019-10-18 | 2022-05-27 | 杰富意钢铁株式会社 | Method and apparatus for recovering manganese from waste dry battery |
-
2022
- 2022-03-29 CN CN202210317696.5A patent/CN114522794A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011194344A (en) * | 2010-03-20 | 2011-10-06 | Fukumoto Giken:Kk | Method for separating and refining inorganic-type hollow fine-particle powder raw material, high-purity fine particle powder and separation refining apparatus |
| CN101838136A (en) * | 2010-05-14 | 2010-09-22 | 上海大豪纳米材料喷涂有限公司 | Preparation method of aluminium oxide and titanium dioxide compound ceramic powder |
| CN102489383A (en) * | 2011-12-02 | 2012-06-13 | 宝丰恒瑞新材料有限公司 | Dispersing agent used for silicon carbide micro powder water overflow grading and application method thereof |
| CN104087890A (en) * | 2014-07-18 | 2014-10-08 | 郑州高端装备与信息产业技术研究院有限公司 | Method for preparing ceramic coating lining of mud pump cylinder sleeve |
| CN204234313U (en) * | 2014-11-14 | 2015-04-01 | 北京科技大学 | A kind of disc type spherical powder screening plant |
| CN108993383A (en) * | 2018-07-16 | 2018-12-14 | 深圳市环球绿地新材料有限公司 | The preparation of spherical activated charcoal and screening technique |
| CN114555839A (en) * | 2019-10-18 | 2022-05-27 | 杰富意钢铁株式会社 | Method and apparatus for recovering manganese from waste dry battery |
Non-Patent Citations (3)
| Title |
|---|
| 李合琴等: "《金属材料工程实验教程》", 31 July 2018, 合肥工业大学出版社 * |
| 杨俊杰: "制药工程原理与设备", 重庆大学出版社 * |
| 郑水林等: "《超细粉碎工程》", 30 September 2006, 中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231615A (en) * | 2022-06-22 | 2022-10-25 | 季华实验室 | A kind of preparation method of nanostructured YSZ powder for additive manufacturing |
| CN115231615B (en) * | 2022-06-22 | 2024-05-07 | 季华实验室 | A method for preparing nanostructured YSZ powder for additive manufacturing |
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