A kind of equipment of diamond synthesis catalytic alloy powder
Technical field
The utility model relates to Diamond Synthesizing Technology field more particularly to a kind of diamond synthesis catalytic alloy powders
Equipment.
Background technique
Allotrope of the diamond as carbon is nature since it has three-dimensional positive tetrahedron crystal structure
Naturally occurring most hard substance in boundary.The purposes of diamond is very extensive, such as: cutting tool, geology in industry bore
Head and oil bit diamond, wire drawing die diamond, abrasive material diamond, trimmer diamond, glass cutter diamond,
Penetrator diamond, craftwork diamond etc..It is quiet by special high temperature and pressure early in nineteen fifty-five General Electric
Denso is standby, first industrial diamond small crystals in the world is obtained, to open the gate of diamond.By
The development of decades, currently on the market industrialized diamond be by catalyst powder alloy by graphite at high temperature under high pressure into
Row synthesis.And the catalyst alloy material of the diamond synthesis in high volume used is mostly iron(-)base powder catalyst.It is iron-based
The manufacture of catalyst alloy powder is at present mainly based on atomization (water atomization or aerosolization).Under normal circumstances, through high-pressure water mist
The effective component about 99.5~99.7% for the catalytic alloy powder that metaplasia produces, i.e. oxygen content are mostly in 3000~5000ppm, and aerosol
The effective component about 99.95~99.97% for the catalytic alloy powder that metaplasia produces, i.e., oxygen content is mostly in 300~500ppm.But from
For processing cost angle, the catalyst alloy powder of same composition proportion, the production and processing of water atomization takes the 25 of only aerosolization
~30%.Therefore, in wear-resisting superhard material field, the synthesis of the biggish diamond of general industry grade dosage is mostly used greatly
Effective component is relatively low but the water mist of more cost advantage flower catalyst alloy powder.The quality and catalyst alloy of artificially synthesizing diamond
The oxygen content of powder has substantial connection.It is better in lower, synthesized Diamond Quality by Control for Oxygen Content to generally require.In order to
Production cost is taken into account, needs to further decrease the oxygen content in water atomization catalyst powder alloy powder, improves catalyst alloy powder
Effective component.
Utility model content
In order to solve the above-mentioned technical problem, the utility model proposes a kind of dresses of diamond synthesis catalytic alloy powder
It is standby, can be by the Control for Oxygen Content of catalyst alloy powder in 1000-2000ppm, catalyst alloy powder effective component is up to 99.80
~99.90%.
In a first aspect, the utility model provides a kind of equipment of diamond synthesis catalytic alloy powder, including successively connect
Metal Melting room, tundish, water-gas combined atomization spray disk, isolating valve, spray chamber, slush pump, centrifuge and the drying machine connect, institute
Setting smelting furnace in Metal Melting room is stated, further includes water-gas combined spray disk in the Metal Melting room, the water-gas combined spray disk
It is arranged between smelting furnace lower part, the Metal Melting room and spray chamber and is connected by isolating valve, the spray chamber side wall setting
It is vented charge valve, filter screen is set in the spray chamber, slush pump is arranged in the spray chamber bottom, and the slush pump is sequentially connected
Centrifuge and drying machine.
Preferred: the Metal Melting room is equipped with feed inlet and air inlet.
Preferred: the smelting furnace is induction melting furnace.
Preferred: the spray chamber bottom is funnel-form.
Preferred: the lower part of spray chamber is arranged in the filter screen.
Preferred: the drying machine is vacuum drier.
Second aspect, the utility model, which provides, a kind of prepares diamond catalytic alloy powder using any of the above-described equipment
Technique, comprising the following steps:
(1) by catalyst alloy raw material in Metal Melting room into melting;
(2) pass through atomization indoor exhaust charge valve to be discharged and be filled with protection gas atomization room air;
(3) isolating valve of connection working chamber and spray chamber is opened;
(4) alloy raw material after melting is poured into tundish;
(5) water-gas combined atomization is carried out to the alloy raw material after melting by water-gas combined atomization spray disk;
(6) slurry is pumped into centrifuge by slush pump;
(7) preliminary hydro-extraction is carried out by centrifuge;
(8) dewatered water-containing materials are delivered in drying machine and are dried.
It is preferred: the pressure control of the water-gas combined atomization spray disk in 2.0~3.5MPa, hydraulic pressure control 50~
100MPa。
Preferred: the control of the drying temperature of the drying machine is at 90~110 DEG C, vacuum degree control 1Pa or less.
The third aspect, the utility model provide a kind of diamond, are closed by the diamond that any of the above-described technique is prepared
Golden catalytic powder is prepared.
The beneficial effects of the utility model are:
The equipment and technique of the claimed diamond synthesis catalytic alloy powder of the utility model embodiment, substantially subtract
The probability that few catalyst alloy is contacted with oxygen in process of production, effectively reduces the oxygen content of final catalytic powder product, improves
The effective component of diamond synthesis catalytic powder.Producing in batches through applicant proves, increases in comprehensive average production cost
In the case where 15%, in 1000~2000ppm, (such as Fig. 1 uses this reality to the Control for Oxygen Content of produced catalytic alloy powder
The FeNi30 catalyst powder being prepared with novel equipment and technique, oxygen content 1210ppm use the equipment of the utility model
The FeNi29Co1 catalyst powder being prepared with technique, oxygen content 1330ppm use the equipment and technique system of the utility model
Standby obtained FeNi24Co1 catalyst powder, oxygen content 1420ppm).It is synthesized using the catalytic alloy powder of the utility model production
Diamond particles under equal conditions compared with by other water atomization catalytic alloy powder synthesize in color it is more uniform, yellow is spent thoroughly
More preferably, Ti and TTi index is higher.
The equipment of the claimed diamond synthesis catalytic alloy powder of the utility model embodiment, spray chamber bottom is set
It is calculated as funnel-form, and slush pump is arranged in spray chamber funnel bottom end, the benefit of the design is: 1) being conducive to the heavy of powder slurries
Product;2) slurry concentrates on bottom, and slush pump can all take slurry away, remains substantially without slurry.
The equipment of the claimed diamond synthesis catalytic alloy powder of the utility model embodiment melts in the equipment
Isolating valve is designed between refining room and spray chamber, the independence of melting and atomization process may be implemented, improves continuous production operability.
The technique of the claimed diamond synthesis catalytic alloy powder of this utility model embodiment, drying temperature control
System is at 90~110 DEG C, and vacuum degree control 1Pa is hereinafter, effectively prevent to prevent the oxidation of water-containing materials in the drying process.
The equipment of the claimed diamond synthesis catalytic alloy powder of the utility model embodiment, it is described water-gas combined
The outside of spray chamber, the lower part of tundish, the convenient operation replaced or adjusted to nozzle is arranged in atomization spray disk.
The equipment of the claimed diamond synthesis catalytic alloy powder of the utility model embodiment, water-gas combined atomization
Gas circuit is increased on spray disk, which protects metal liquid stream not oxidized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the equipment of the diamond synthesis catalytic alloy powder of the embodiment of the present application;
Wherein: 1, Metal Melting room, 2, tundish, 3, water-gas combined atomization spray disk, 4, isolating valve, 5, spray chamber, 6, mud
Stock pump, 7, centrifuge, 8, drying machine, 9, smelting furnace, 10, exhaust charge valve, 11, filter screen.
Specific embodiment
In order to be better understood by the technical solution of the utility model, the utility model is made furtherly with reference to the accompanying drawing
It is bright.
Embodiment one
As shown in Figure 1, a kind of equipment of diamond synthesis catalytic alloy powder is claimed in the present embodiment, including successively
Disk 3, isolating valve 4, spray chamber 5, slush pump 6,7 and of centrifuge are sprayed in the Metal Melting room 1 of connection, tundish 2, water-gas combined atomization
Drying machine 8, it further includes water-gas combined spray disk 3, institute in the Metal Melting room 1 that the Metal Melting room 1 is interior, which to be arranged smelting furnace 9,
The water-gas combined setting of spray disk 3 is stated to connect between 9 lower part of smelting furnace, the Metal Melting room 9 and spray chamber 5 by isolating valve 4,
5 side wall of the spray chamber setting exhaust charge valve 10, the spray chamber 5 is interior to be arranged filter screen 11, and 5 bottom of spray chamber is set
Slush pump 6 is set, the slush pump 6 is sequentially connected centrifuge 7 and drying machine 8.
Traditional water atomization production catalyst alloy powder generally uses open type melting, then is let slip a remark by tundish and enter mist
Change room, is then atomized with high-pressure water impact aluminium alloy stream, the powder through being atomized falls into the water cooling, is finally separating drying
Obtain catalyst alloy powder.Oxygen content in the catalyst alloy powder of traditional water atomization technique production, is mainly derived from following several
A aspect: 1) oxygen when alloy opens wide melting in air;2) high-temperature metal liquid stream possible oxidation in water when being atomized;3) mist
Change the oxygen in room air to the oxidation through hydraulic atomized alloy powder before falling into pond;4) it separates in drying process
The oxidation of generation.The utility model is directed to above-mentioned process characteristic, and the applicant of the utility model is directed to above-mentioned process characteristic, by mesh
The progress of preceding powder by atomization system process equipment is combined with the water atomization knowhow of many years, and in water atomization, the production cost increases
Gas shield melting+water-gas combined is devised in the case where few is atomized the Fe base catalyst alloy powder for preparing high effective component
That is, equipment and technique, the catalyst alloy powder effective component produced using the technique of the equipment will up to 99.80~99.90%
Control for Oxygen Content is in 1000-2000ppm.
Preferred: the Metal Melting room 1 is equipped with feed inlet and air inlet.
Preferred: the smelting furnace 9 is induction melting furnace.
Preferred: the drying machine 8 is vacuum drier.
Embodiment two
The technical characteristic that the present embodiment is the same as example 1 is not repeating, and the present embodiment is different from the technology of embodiment one
Feature is as follows: 5 bottom of spray chamber is funnel-form.Funnel-form is conducive to the deposition of powder slurries, and slurry concentrates on bottom, mud
Stock pump can all take slurry away, remain substantially without slurry.
Preferred: the lower part of spray chamber 5 is arranged in the filter screen 11.
Embodiment three
The technique that any of the above-described equipment prepares diamond catalytic alloy powder, including following step is claimed in the present embodiment
It is rapid:
(1) by catalyst alloy raw material in Metal Melting room 1 into melting;
(2) air in spray chamber 5 is discharged and is filled with protection gas by exhaust charge valve 10 in spray chamber 5;
(3) isolating valve 4 of connection Metal Melting room 1 and spray chamber 5 is opened;
(4) alloy raw material after melting is poured into tundish 2;
(5) water-gas combined atomization is carried out to the alloy raw material after melting by water-gas combined atomization spray disk 3;
(6) slurry is pumped into centrifuge by slush pump 6;
(7) preliminary hydro-extraction is carried out by centrifuge;
(8) dewatered water-containing materials are delivered in drying machine 8 and are dried.
Example IV
The present embodiment technical characteristic identical with above-described embodiment three is not repeating, and the present embodiment is different from embodiment three
Technical characteristic is as follows: the pressure control of the water-gas combined atomization spray disk 3 in 2.0~3.5MPa, hydraulic pressure control 50~
100MPa.Prevent catalytic powder granularity meticulous.
Embodiment five
The present embodiment technical characteristic identical with above-described embodiment three or example IV is not repeating, and the present embodiment is different from
The technical characteristic of above-described embodiment is as follows: the control of the drying temperature of the drying machine 8 at 90~110 DEG C, vacuum degree control 1Pa with
Under.It effectively prevent the oxidation of water-containing materials in the drying process under this condition.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that utility model range involved in the application, however it is not limited to made of the specific combination of above-mentioned technical characteristic
Technical solution, at the same should also cover do not depart from the utility model design in the case where, by above-mentioned technical characteristic or its be equal
Feature carries out any combination and other technical solutions for being formed.Such as features described above and (but being not limited to) disclosed herein have
The technical solution for thering is the technical characteristic of similar functions to be replaced mutually and being formed.