CN101525758B - Method for preparing cobalt-substituted prealloying powder from regenerated metal - Google Patents

Method for preparing cobalt-substituted prealloying powder from regenerated metal Download PDF

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CN101525758B
CN101525758B CN2009100431355A CN200910043135A CN101525758B CN 101525758 B CN101525758 B CN 101525758B CN 2009100431355 A CN2009100431355 A CN 2009100431355A CN 200910043135 A CN200910043135 A CN 200910043135A CN 101525758 B CN101525758 B CN 101525758B
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cobalt
metal
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CN101525758A (en
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郑日升
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Hunan Fu Long new materials Limited by Share Ltd
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HUNAN FULONGJIANG SUPERHARD MATERIAL CO Ltd
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Abstract

The invention discloses a method for preparing cobalt-substituted prealloying powder from regenerated metal. The method comprises the process steps: compounding raw materials, electrolyzing at a room temperature, crushing, screening, detecting and packaging; using the regenerated metal, such as recycled synthetic diamond waste powder accelerant, and the like, as a main raw material; supplementinga suitable amount of metal cobalt and metal iron to an anode basket together; and rinsing, purifying in vacuum after the room-temperature electrolysis step in the process steps and reducing hydrogen at 400 DEG C to 650 DEG C. More than 10 percent of particles in a final product have a sponge appearance, and an electrolyte used in the room-temperature electrolysis step in the process steps can be recycled. The invention has the advantages: 1, the production cost is lower than that of a chemical coprecipitation method by more than 50 percent, and the product quality is stable; 2, the powder appearances comprises the sponge appearance so as to have a large specific surface area; 3, the powder can be applied to laser bonding; 4, the strength is high, and the anti-abrasion performance is good;and 5, the sintering temperature is low, and the range is wide. The method is suitable for being adopted by industrial and mining plants producing the cobalt-substituted prealloying powder.

Description

A kind of with the method for secondary metal preparation for the cobalt pre-alloyed powder
Technical field
The present invention relates to the preparation method of a kind of generation cobalt prealloy powder, particularly relate to a kind of with the method for secondary metal preparation for the cobalt pre-alloyed powder.
Background technology
Diamond tool industry was used more and more for cobalt dust over surplus past 10 year.At first, it is all fostered suspicion and careful attitude, but discovery now almost can be used everywhere.Use for cobalt dust usually based on iron, copper, but still contain cobalt usually, depend on different powder process producers, containing the cobalt amount may be about 30%.Chemical coprecipitation process is adopted in the manufacturing of these powder, comprises proposing oxide powder that from salts solution the powder composition that the component of this salts solution and subsequent production are come out is suitable.Then in stove dry be reduced into metal-powder.Each particulate component of powder that this production technique is produced is all identical with the component that salts solution makes, and finally obtains the uniform pre-alloyed powder of composition, rather than the powdered mixture of different components.The powder size that this method is produced is shaped as like the how empty coacervate of globular below ten microns, has good flowability, compactibility and good sintering character.Production process control is complicated, the cost height, and price is expensive.
Also can adopt atomization to prepare pre-alloyed powder, with the metallic substance of each element of powdered alloy,, adopt high-pressure atomization WATER AS FLOW MEDIUM or gas earlier through vacuum induction melting, by atomizing nozzle the molten metal flow atomizing is pulverized, pulverize drop and form powder through cooling curing.By adjusting nozzle geometrical dimension, and atomization condition, can make powder formation certain size and shape mainly is the globular powder.The pre-alloyed powder that atomization is produced, the alloying level height has excellent sintering character, and is strong to the diamond hold, cuts sharp.And production capacity is big, and production cost is low.But powder is spherical particle, and suppression performance is relatively poor.The control of granularity, impurity, oxygen level has certain randomness, and it is stable to be difficult to ensure the quality of products.
Present comminuting method and electrolytic process prepare pre-alloyed powder, all have limitation.What provide in the market mainly is the product and the domestic understable product of producing with atomization of quality of chemical coprecipitation method preparation of the costliness of import for the cobalt pre-alloyed powder.
Common its application limit is still arranged at present at most of for cobalt dust.For example: can not well weld usually, this means that these powder only are applied in the construction work to limitation usually.What remex company newly developed recently is MasterTec-1 and MasterTec-2 for the cobalt pre-alloyed powder.The both is based on the uniform alloyed metal powder of iron, nickel, cobalt, but only contains a spot of cobalt, has broken through this application limit.But their production cost height, the selling price height.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of low cost is provided, steady quality can improve Working environment, prevent " three wastes " generation with secondary metal preparation method for the cobalt pre-alloyed powder.
Purpose of the present invention is achieved by following technical proposals: comprise processing step feed proportioning, room temperature electrolysis, crush and screen and test package, described processing step feed proportioning is to be main raw material with the secondary metals such as diamond synthesis waste-powder catalyst that reclaim, replenish an amount of cobalt metal and iron, add together in the anode basket; After the electrolysis of described processing step room temperature, carry out rinsing, vacuum purification and carry out hydrogen reduction, carry out then that processing step crushes and screens and test package at 400-650 ℃; There is the particle more than 10% to have spongy pattern in the finished product.
The electrolytic solution that uses in the electrolysis of described processing step room temperature can be recycled.
Compared with prior art, the present invention has the following advantages: 1, production cost is lower more than 50% than chemical coprecipitation, constant product quality.2, powder morphology contains spongyly, and specific surface area is big.3, can be applied to laser welding.4, intensity height, abrasion resistance properties is good.5, the low and wide ranges of sintering temperature.The industrial and mining enterprises that method of the present invention is suitable for producing for the cobalt pre-alloyed powder adopt.
Embodiment
The invention will be further described below in conjunction with embodiment:
The present invention includes processing step feed proportioning, room temperature electrolysis, crush and screen and test package, described processing step feed proportioning is to be main raw material with the secondary metals such as diamond synthesis waste-powder catalyst that reclaim, replenish an amount of cobalt metal and iron, add together in the anode basket; After the electrolysis of described processing step room temperature, carry out rinsing, vacuum purification and carry out hydrogen reduction, carry out then that processing step crushes and screens and test package at 400-650 ℃; There is the particle more than 10% to have spongy pattern in the finished product.
The electrolytic solution that uses in the electrolysis of described processing step room temperature can be recycled.
Adopt the diamond synthesis exhausted iron nickel cobalt dust catalyst metal that reclaims to do raw material, can reduce manufacturing cost significantly.
Replenish part metals cobalt and iron,, be aided with the composition regulatory function of electrolytic solution, guarantee constant product quality to guarantee the in a basic balance of anode dissolution and cathodic deposition.
Utilize the high purification effect of electrochemical co-deposition and the regulating effect that bath composition is formed self thereof, and the high speed circular electrolyte, quality product and stability thereof effectively guaranteed.
Adopt room temperature electrolysis and vacuum purification technology, can improve Working environment, prevent the generation of " three wastes ".
Adopt the hydrogen reduction technology to guarantee that oxygen level is stable.
The preparation method of embodiment 1:FeNiCo pre-alloyed powder:
Fe with 1 ton of recovery 70Ni 21Co 2Add together in the anode basket after replenishing the cobalt of 45% iron and 2% in the O alloy, went out groove in ten days through electrolysis, carry out vacuum purification and 450 ℃ of hydrogen reductions after the rinsing three times, crushing and screening makes 1.2 tons of pre-alloyed powders.The prealloy composition that chemical analysis obtains is an iron 80.15%, nickel 14.98%, and cobalt 2.43%, oxygen 0.8%, other is the metal of trace.
The preparation method of embodiment 2:FeNiCo pre-alloyed powder:
Fe with 1 ton of recovery 78Ni 16Co 2Add together in the anode basket after replenishing 1% cobalt in the O alloy, went out groove in seven days through electrolysis, carry out vacuum purification and 450 ℃ of hydrogen reductions after the rinsing three times, crushing and screening makes 930 kilograms of products.The prealloy composition that chemical analysis obtains is an iron 80.20%, nickel 15.18%, and cobalt 2.63%, oxygen 0.78%, other is the metal of trace.

Claims (2)

1. one kind with the secondary metal preparation method for the cobalt pre-alloyed powder, comprise processing step: feed proportioning, room temperature electrolysis, crush and screen and test package, it is characterized in that: described processing step feed proportioning is to be main raw material with the diamond synthesis waste-powder catalyst regneration metal that reclaims, replenish an amount of cobalt metal and iron, add together in the anode basket; After the electrolysis of described processing step room temperature, carry out rinsing, vacuum purification and carry out hydrogen reduction, carry out then that processing step crushes and screens and test package at 400-650 ℃; There is the particle more than 10% to have spongy pattern in the finished product.
2. according to claim 1 a kind of with the method for secondary metal preparation for the cobalt pre-alloyed powder, it is characterized in that: the electrolytic solution that uses in the electrolysis of described processing step room temperature can be recycled.
CN2009100431355A 2009-04-17 2009-04-17 Method for preparing cobalt-substituted prealloying powder from regenerated metal Active CN101525758B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101898247B (en) 2010-07-19 2012-06-06 北京科技大学 Pollution-free recycling method of iron-based grinding waste material
CN103394360B (en) * 2013-08-06 2015-05-13 涂国坚 Preparation method of regenerative catalyst
CN104128893A (en) * 2014-07-31 2014-11-05 泉州众志金刚石工具有限公司 Diamond abrasive grinding block
CN104525936A (en) * 2014-12-22 2015-04-22 湖南富栊新材料有限公司 Method for preparing cobalt-substitute prealloy powder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1986116A (en) * 2005-12-19 2007-06-27 北京有色金属研究总院 RE-containing prealloy powder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1986116A (en) * 2005-12-19 2007-06-27 北京有色金属研究总院 RE-containing prealloy powder

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Weiss C，etal.MasterTec粉末——对代钴粉末市场的新促进.《金刚石与磨料磨具工程》.2009,(第2期),74-76. *
姜荣超等.预合金粉末的发展、性能测试与应用.《超硬材料工程》.2009,第21卷(第2期),1-7. *

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