CN107377867B - A kind of steel moulder's paint and preparation method thereof - Google Patents
A kind of steel moulder's paint and preparation method thereof Download PDFInfo
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- CN107377867B CN107377867B CN201710723807.1A CN201710723807A CN107377867B CN 107377867 B CN107377867 B CN 107377867B CN 201710723807 A CN201710723807 A CN 201710723807A CN 107377867 B CN107377867 B CN 107377867B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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Abstract
A kind of steel moulder's paint, its raw material composition includes refractory aggregate, suspension stabilizer, solvent, binder, refractory aggregate includes recycling zirconium powder, the preparation method of the coating is with zircite product processing waste material, the waste material generated in powder enterprise production process processed, condemned MAT'L or zirconium column abrasive material after zirconium oxide product use are raw material, first carry out washing or shaking table removal of impurities, it dries again and ball milling is to obtain recycling zirconium powder, then refractory aggregate is prepared as raw material to recycle zirconium powder, the pretreatment of suspension stabilizer is carried out again, configure resin liquid and PVB liquid, each raw material is finally mixed into properties of product qualification.The coating not only can satisfy the requirement of heavy section steel castings, complex thin-walled member, high-melting-point steel-casting, but also cost is extremely low.
Description
Technical field
The present invention relates to zirconium oxide regenerating technique for waste material fields, and in particular to a kind of steel moulder's paint and preparation method thereof is fitted
For heavy section steel castings, thin-wall complicated part and high-melting-point steel-casting.
Background technique
Steel moulder's paint is generally coated to steel casting surface, for preventing the surface defects such as scab, improves the surface product of casting
Matter.Its raw material is generally made of fire resistant infilling, suspension stabilizer, decentralized medium (solvent), binder etc., wherein fire resisting is filled out
Material is also known as refractory aggregate, is the chief component of steel moulder's paint, the fine or not using effect shadow to cast paint of quality
It rings very big.Common refractory aggregate mainly has graphite powder, Cab-O-sil, zirconium English powder, schmigel and high-alumina fly, wherein zirconium English powder
Refractoriness is higher, has preferable stability at elevated temperature, manufacture craft is also relatively good, therefore steel moulder's paint mainly uses zirconium
English powder is as refractory aggregate.But the higher cost of zirconium English powder especially import zirconium English powder, the cost for resulting in steel moulder's paint are also tieed up
It holds in higher level.
With the development of national economy, zirconium oxide demand is increasing.Zirconium silicate manufacture Zirconium powder during with
And many waste materials can be generated in zirconium product process, zirconia content is greater than 80% in original powder, and iron is less than 0.05%, oxidation
Yttrium is much to be drunk in 5% and burns decrement 1% or so, but contains a large amount of ammonium chlorides in original powder waste material, due to using metal in product waste material
Tool sharpening, and impurity is high in cesspool and pipeline, amount containing zirconium is 80%~90%, and iron content is 0.15%~1.5%, oxygen
Change yttrium 5% or so, impurity content 1%~5%, such waste material is unable to satisfy: 1, manufacturing zirconia block, due to impurity height, fire resisting
Degree reduces；2, fused alumina zirconia abrading-ball is manufactured, due to yttria levels height, hardness is difficult to meet quality requirement；3, domestic ceramics, due to
Iron content is high, so that ceramic surface point, pin hole are more.Acid adding is mainly passed through for the recovery processing of zirconium oxide waste material at present, is added
The modes such as alkali or high-temperature roasting recycle it is therein containing zirconium and containing yttrium compound, as application publication number be CN102531588A,
The Chinese patent of CN105036739A, not only yield is low for above-mentioned recovery process, but also cost recovery is high.
Summary of the invention
The purpose of the present invention is overcoming the problems, such as that steel moulder's paint cost of the existing technology and zirconium powder cost recovery are high, mention
For a kind of using the recycling zirconium powder of low cost as steel moulder's paint of raw material and preparation method thereof.
In order to achieve the above object, the present invention provides following technical schemes:
A kind of steel moulder's paint, raw material composition include refractory aggregate, suspension stabilizer, solvent, binder；
The refractory aggregate includes recycling zirconium powder, and the recycling zirconium powder is made using following recovery process:
Washing first is carried out to zirconium oxide waste material or shaking table cleans, obtains slurry, then slurry drying is prefabricated to obtain
Then pre-mixture ball milling is obtained recycling zirconium powder by mixture, wherein the zirconium oxide waste material is A class, B class, C class or D
Class waste material, the A class waste material are the zirconium oxide waste material that zircite product processing generates, and the B class waste material is that zircite product is former
The zirconium oxide waste material generated in the production process of material, the C class waste material be the use of zirconium oxide product after scrap zirconium oxide material
Material, the D class waste material are zirconium column abrasive material.
The raw material of the siccative of the A class waste material forms and weight percent content are as follows: and zirconium oxide 88~93, yttrium oxide 2~
10, iron oxide is below 0.1 lower than 0.2, meal with wine scaling loss amount 1~2, other impurities；
The raw material of the siccative of the B class waste material forms and weight percent content are as follows: and zirconium oxide 80~94, yttrium oxide 2~
5, ammonium chloride 5~15, iron oxide are below 0.1 lower than 0.02, other impurities；
The raw material of the C class waste material forms and weight percent content are as follows: zirconium oxide 80~94, yttrium oxide 2~5, chlorination
Ammonium 5~15, iron oxide are below 0.1 lower than 0.02, other impurities；
The raw material of the D class waste material forms and weight percent content are as follows: zirconium oxide 30~70, aluminium oxide 30~70, oxygen
Change yttrium 0.1~2, other impurities are below 0.2.
The refractory aggregate further includes silicon powder, and in the refractory aggregate zirconium oxide weight percent content be 40~
67。
The suspension stabilizer is lithium bentonite or organobentonite, and the solvent is pure water, alcohols solvent or oil
Agent, the binder are at least one of clay, silica solution, phosphate, calcium stearate, alcohol-sol-resin.
A kind of preparation method of steel moulder's paint, successively the following steps are included:
One, preparation recycling zirconium powder: first carrying out washing to zirconium oxide waste material or shaking table clean, obtain slurry, then by the slurry
Then pre-mixture ball milling is obtained recycling zirconium powder to obtain pre-mixture by material drying；
Two, it prepares refractory aggregate: preparing refractory aggregate by raw material of the recycling zirconium powder；
Three, it the pretreatment of suspension stabilizer: is sealed after suspension stabilizer, solvent are rolled in the mixing of required ratio；
Four, resin liquid and PVB liquid are prepared: alcohol-sol-resin being dissolved in alcohols solvent and obtains resin liquid, and PVB is dissolved
PVB liquid is obtained in alcohols solvent；
Five, refractory aggregate and alcohols solvent mixed grind are first obtained into paste mixture, add solvent, binder, resin liquid,
PVB liquid and other additives mix to properties of product qualification.
The refractory aggregate further includes silicon powder, and in the refractory aggregate zirconium oxide weight percent content be 40~
67；
In step 1, the drying temperature is 500~600 DEG C, and drying time is greater than 1h；
In step 2, the recycling zirconium powder and silicon powder are mixed in required ratio and obtain refractory aggregate.
The zirconium oxide waste material is B class or C class waste material；
In step 1, also need to perform the following operation before the drying:
The slurry and aluminum hydroxide solution hybrid reaction are first obtained into Solid-liquid mixture, then water is carried out to Solid-liquid mixture
It washes.
The zirconium oxide waste material is C class or D class waste material；
In step 1, first zirconium oxide waste material is crushed before carrying out the washing or shaking table removal of impurities.
In step 1,
The granularity of the recycling zirconium powder is not less than 300 mesh, and the specification of the silicon powder is 200~400 mesh；
The ball milling uses aluminium oxide or zirconium oxide balls, and liner plate uses silica.
The suspension stabilizer is lithium bentonite or organobentonite, and the solvent is pure water, alcohols solvent or oil
Agent, the binder are at least one of clay, silica solution, phosphate, calcium stearate, alcohol-sol-resin.
Compared with prior art, the invention has the benefit that
1, refractory aggregate includes recycling zirconium powder in a kind of steel moulder's paint of the present invention, and recycles zirconium powder and processed by zircite product
Condemned MAT'L or zirconium column abrasive material after the waste material that generates in waste material, powder enterprise production process processed, zirconium oxide product use pass through
Simultaneously ball milling is made for drying after washing or shaking table removal of impurities, can replace import zirconium English powder raw material, the steel moulder's paint being prepared completely
With high refractoriness (being greater than 1800 degree), good crust stripping performance, no scab, burning into sand, gas beautiful using rear casting of appearance of cast
Hole can satisfy the requirement of heavy section steel castings, complex thin-walled member, high-melting-point steel-casting；On the other hand, the recycling work of zirconium powder
Skill is not necessarily to handle by multi-step chemical, and not only preparation is simple, but also high income, at low cost, thus can significantly drop
The cost of low steel moulder's paint.Therefore, the present invention not only can satisfy heavy section steel castings, complex thin-walled member, high-melting-point steel-casting
Requirement, and it is low in cost.
2, drying temperature is set as 500~600 DEG C by step 1 in a kind of preparation method of steel moulder's paint of the present invention, and is dried
The dry time is greater than 1h, the design can not only be effectively removed while realizing drying density it is close with zirconium oxide, using washing
Or the impurity that shaking table can not remove, to improve the quality of recycling zirconium powder, and can be played when zirconium oxide waste material is B class waste material
Remove the effect of ammonium chloride.Therefore, the present invention can play removing ammonium chloride and other impurities by controlling drying temperature simultaneously
Effect.
Specific embodiment
The invention will be further described With reference to embodiment.
A kind of steel moulder's paint, raw material composition include refractory aggregate, suspension stabilizer, solvent, binder；
The refractory aggregate includes recycling zirconium powder, and the recycling zirconium powder is made using following recovery process:
Washing first is carried out to zirconium oxide waste material or shaking table cleans, obtains slurry, then slurry drying is prefabricated to obtain
Then pre-mixture ball milling is obtained recycling zirconium powder by mixture, wherein the zirconium oxide waste material is A class, B class, C class or D
Class waste material, the A class waste material are the zirconium oxide waste material that zircite product processing generates, and the B class waste material is that zircite product is former
The zirconium oxide waste material generated in the production process of material, the C class waste material be the use of zirconium oxide product after scrap zirconium oxide material
Material, the D class waste material are zirconium column abrasive material.
The raw material of the siccative of the A class waste material forms and weight percent content are as follows: and zirconium oxide 88~93, yttrium oxide 2~
10, iron oxide is below 0.1 lower than 0.2, meal with wine scaling loss amount 1~2, other impurities；
The raw material of the siccative of the B class waste material forms and weight percent content are as follows: and zirconium oxide 80~94, yttrium oxide 2~
5, ammonium chloride 5~15, iron oxide are below 0.1 lower than 0.02, other impurities；
The raw material of the C class waste material forms and weight percent content are as follows: zirconium oxide 80~94, yttrium oxide 2~5, chlorination
Ammonium 5~15, iron oxide are below 0.1 lower than 0.02, other impurities；
The raw material of the D class waste material forms and weight percent content are as follows: zirconium oxide 30~70, aluminium oxide 30~70, oxygen
Change yttrium 0.1~2, other impurities are below 0.2.
The refractory aggregate further includes silicon powder, and in the refractory aggregate zirconium oxide weight percent content be 40~
67。
The suspension stabilizer is lithium bentonite or organobentonite, and the solvent is pure water, alcohols solvent or oil
Agent, the binder are at least one of clay, silica solution, phosphate, calcium stearate, alcohol-sol-resin.
A kind of preparation method of steel moulder's paint, successively the following steps are included:
One, preparation recycling zirconium powder: first carrying out washing to zirconium oxide waste material or shaking table clean, obtain slurry, then by the slurry
Then pre-mixture ball milling is obtained recycling zirconium powder to obtain pre-mixture by material drying；
Two, it prepares refractory aggregate: preparing refractory aggregate by raw material of the recycling zirconium powder；
Three, it the pretreatment of suspension stabilizer: is sealed after suspension stabilizer, solvent are rolled in the mixing of required ratio；
Four, resin liquid and PVB liquid are prepared: alcohol-sol-resin being dissolved in alcohols solvent and obtains resin liquid, and PVB is dissolved
PVB liquid is obtained in alcohols solvent；
Five, refractory aggregate and alcohols solvent mixed grind are first obtained into paste mixture, add solvent, binder, resin liquid,
PVB liquid and other additives mix to properties of product qualification.
The refractory aggregate further includes silicon powder, and in the refractory aggregate zirconium oxide weight percent content be 40~
67；
In step 1, the drying temperature is 500~600 DEG C, and drying time is greater than 1h；
In step 2, the recycling zirconium powder and silicon powder are mixed in required ratio and obtain refractory aggregate.
The zirconium oxide waste material is B class or C class waste material；
In step 1, also need to perform the following operation before the drying:
The slurry and aluminum hydroxide solution hybrid reaction are first obtained into Solid-liquid mixture, then water is carried out to Solid-liquid mixture
It washes.
The zirconium oxide waste material is C class or D class waste material；
In step 1, first zirconium oxide waste material is crushed before carrying out the washing or shaking table removal of impurities.
In step 1,
The granularity of the recycling zirconium powder is not less than 300 mesh, and the specification of the silicon powder is 200~400 mesh；
The ball milling uses aluminium oxide or zirconium oxide balls, and liner plate uses silica.
The suspension stabilizer is lithium bentonite or organobentonite, and the solvent is pure water, alcohols solvent or oil
Agent, the binder are at least one of clay, silica solution, phosphate, calcium stearate, alcohol-sol-resin.
The principle of the present invention is described as follows:
Due to containing yttrium oxide in zirconium oxide waste material, and yttrium oxide meets very much in high temperature (1500 degree or more) thermal stability
The requirement of cast paint refractory aggregate, and it is more more stable than under silica flour, white fused alumina, zirconium silicate high temperature, it is high that production is more suitable in principle
Steel moulder's paint is held, performance satisfaction even can surmount zirconium silicate, and (zirconium silicate can resolve into zirconium oxide and oxidation at 1600 degree or so
Silicon) coating.Therefore, the present invention provides a kind of high-end castings that the cost manufactured using recycling zirconium oxide waste disposal is extremely low
Steel coating, it can not only substitute zircon flour coating, but also can be used as unstressed sprayed coating.
Zirconium oxide waste material mainly includes following four classes selected by the present invention:
A class: such waste material is mainly logical by zirconia ceramics cutter, artificial tooth, optical fiber plug-in unit, ceramic porcelain dish and ceramic tube etc.
Cross polishing, grinding mode generates, shape be mostly powder (mostly yttria-stabilized zirconia or stable calcium oxide oxidation
Zirconium), partial size is mostly in 20~300 mesh.For the dust for inhibiting polishing to generate when processing, water is mostly used to wash away, by workshop gutter
Flow into recycling sedimentation basin, therefore substantially pulpous state wet feed when recycling.Recovery process such recycling zirconium obtained through the invention
The weight percent content of each component in powder are as follows: zirconium oxide 88~93, yttrium oxide 2~10, iron oxide 0.1~0.15, other are miscellaneous
Matter is below 0.1.
B class: the waste material generated during zirconium oxide is processed by zirconium chloride, recycling state is pulpous state, and mesh number is mostly 60
~300 mesh, for manufacturing zircite product raw material.Each component in recovery process such recycling zirconium powder obtained through the invention
Weight percent content are as follows: zirconium oxide 90~93, yttrium oxide 2~6, iron oxide lower than 0.02, silica 0.1~0.2, oxidation
Aluminium and other impurities are below 0.1.
C class: predominantly steel-making blast furnace zirconia brick, the zirconium oxide mouth of a river, high-temperature heating zirconia ceramics pipe, vehicle row
The products such as industry sensor, communications industry optical fiber plug-in unit, polishing material zirconium oxide bead are using rear abrasion or reach using the longevity
The material scrapped after life, recycling state are big particle or half broken state.
D class: fused alumina zirconia abrading-ball class is mainly used for electronic product polishing, important meals components are thrown using arc melting
Light etc..Obtained such of recovery process recycles the weight percent content of each component in zirconium powder through the invention are as follows: zirconium oxide 30
~70, yttrium oxide 2~5, aluminium oxide 30~70, iron oxide are below 0.05 lower than 0.1, other impurities.Due to such waste material system
The amount containing zirconium of the recycling zirconium powder obtained is lower, may not reach requirement content, at this time can be by itself and A class, B class or C class waste material time
Obtained recycling zirconium powder mixing is received, zirconium content is made to reach requirement.
Using the recycling alternative import zirconium English powder raw material of zirconium powder made from technique of the present invention, but its cost is less than import
The half of zirconium English powder raw material, has embodied apparent cost advantage.
Step 1:
For C class waste material, since its shape is solid-state, bulk is more, so ball milling again after can only being crushed.To prevent from increasing
Iron can be used aluminium oxide abrading-ball (more excellent using zirconia ball), and use silica ball liner plate.The raw material of the powder obtained after ball milling
Composition and weight percent content are as follows: zirconium oxide 88~93, yttrium oxide 2~6, iron oxide lower than 0.2, aluminium oxide 0.1~0.5,
Silica 0.1~0.2, other impurities are below 0.1, wherein aluminium oxide, silica are to generate in mechanical milling process.
For D class waste material, hardness is high and size is big, is directly handled with crusher and is crushed highly difficult, air-flow can be used at this time
It recycles or melts down again by cyclone separator after grinding, raw material being made to collide with each other into fine powder in pressure-air and be heated to 1000 degree
It is placed in crusher and is crushed again after the above softening.
Step 2:
In B class waste material contain a large amount of ammonium chloride, since its color is identical as zirconium oxide, can not room temperature physical removal, because
This present invention uses following two method:
(1) 500 DEG C or more heat preservation 1h or more；
(2) aluminum hydroxide solution reaction is first added, which can heat the discharge to promote ammonia, and then washing goes to dechlorinate
Change aluminium.
Embodiment 1:
A kind of steel moulder's paint, raw material composition include refractory aggregate, suspension stabilizer, solvent, binder, wherein described
Refractory aggregate is mixed by recycling zirconium powder with silicon powder, and the weight percent content of zirconium oxide is in the refractory aggregate
66.8, the suspension stabilizer is lithium bentonite, and the solvent is ethyl alcohol, and the binder is silica solution, phosphate, tristearin
Sour calcium.
It is specific the preparation method is as follows:
One, zirconium oxide waste material contained after washing removes the impurity such as the residual hair of brush for removing fuzzy fibre, gloves line, wheel grinding particle
Slurry of the water rate 50% or more, wherein the zirconium oxide waste material is the zirconium oxide waste material that zircite product processing generates, and is done
The raw material of material forms and weight percent content are as follows: zirconium oxide 90, iron oxide 0.15, drinks scaling loss amount 2, other impurities at yttrium oxide 7
It is below 0.1；
Two, the slurry is first dried to water content and obtains pre-mixture less than 0.5%, then by pre-mixture mistake
300 mesh ultrasonic activations sieve, screenings directly recycle, and oversize mixes after being milled to 300 mesh with the screenings directly recycled
It mixes to recycling zirconium powder, then by recycling zirconium powder with silicon powder to obtain refractory aggregate, wherein the drying temperature is 600 DEG C, is dried
The dry time is 2h, and the ball milling uses aluminium oxide abrading-ball, and uses silica ball liner plate；
Three, suspension stabilizer, silica solution, ethyl alcohol are mixed by the weight ratio of 11:9:30 and is sealed 24 hours after rolling, and will
Alcohol-sol-resin, which is dissolved in ethyl alcohol, obtains resin liquid, and PVB is dissolved in ethyl alcohol and obtains PVB liquid；
Four, refractory aggregate and ethyl alcohol mixed grind are first obtained into paste mixture, adds powder phosphate, calcium stearate, titanium
White powder, 6# solvent naphtha, n-butanol, isopropanol, resin liquid, PVB liquid, ethyl alcohol, after stirring 20min under the revolving speed of 300 turns/min
It is stirred one hour under the revolving speed of 500 turns/min, sampling Detection coating Baume degrees, suspension, gas permeability, solid content are (it is required that wave
U.S. degree is greater than 100,2 hours suspensions and is greater than 99, and gas forming amount 20 is applied on sand lump hereinafter, solid content is greater than 70, and test burn
Brush can light after 3 minutes and completely burned), glue grinds 3min barrelling after product is qualified, wherein the powder phosphoric acid
Salt, calcium stearate, titanium dioxide, 6# solvent naphtha, n-butanol, isopropanol, resin liquid, PVB liquid, ethyl alcohol weight ratio be 7:1:
3:18:1:5:40:15:30。
Embodiment 2:
Difference from example 1 is that:
The weight percent content of zirconium oxide is 67 in the refractory aggregate；
In step 1, the zirconium oxide waste material is useless for the zirconium oxide generated in the production process of zircite product raw material
Material, siccative raw material composition and weight percent content are as follows: zirconium oxide 91, yttrium oxide 5, ammonium chloride 3, iron oxide 0.01, its
He is below 0.1 at the content of impurity；
In step 2, the slurry and aluminum hydroxide solution hybrid reaction are first obtained into Solid-liquid mixture, then mixed to solid-liquid
It closes material to be washed, then be baked to water content less than 0.5%, the drying temperature is 200 DEG C, drying time 3h；
Embodiment 3:
Difference from example 1 is that:
The weight percent content of zirconium oxide is 65 in the refractory aggregate；
In step 1, the zirconium oxide waste material is useless for the zirconium oxide generated in the production process of zircite product raw material
Material, siccative raw material composition and weight percent content are as follows: zirconium oxide 80, yttrium oxide 6, ammonium chloride 12, iron oxide 0.015,
Other impurities are below 0.1.
Embodiment 4:
Difference from example 1 is that:
The weight percent content of zirconium oxide is 66 in the refractory aggregate；
It is first broken to zirconium oxide waste material to carry out shaking table removal of impurities again, wherein the zirconium oxide waste material is zirconium oxide in step 1
Zirconia material, raw material composition and weight percent content are scrapped after product use are as follows: zirconium oxide 85, yttrium oxide 4, chlorination
Ammonium 8, iron oxide 0.015, other impurities are below 0.1；
In step 2, the drying temperature is 500 DEG C, drying time 4h.
Embodiment 5:
Difference from example 1 is that:
The weight percent content of zirconium oxide is 40 in the refractory aggregate；
In step 1, first zirconium oxide waste material is melted down to be placed in crusher after being heated to 1000 degree or more softenings again and is broken
It is broken, then carry out shaking table removal of impurities, wherein the zirconium oxide waste material is zirconium column abrasive material, raw material composition and weight percent content
Are as follows: zirconium oxide 59, aluminium oxide 38, yttrium oxide 1, other impurities are below 0.2；
In step 2, the recycling zirconium powder is mixed in proportion with silicon powder and obtains refractory aggregate.
Embodiment 6:
Difference from example 1 is that:
In step 2, the recycling zirconium powder and silicon powder are first mixed to get mixing, it is mixed that 85 grades of alumines are then added
It closes to obtain refractory aggregate, wherein the weight ratio of the mixing and 85 grades of alumines is 7:3.
Embodiment 7:
Difference from example 1 is that:
The suspension stabilizer is organobentonite, and the binder is clay；
In step 3, suspension stabilizer, silica solution are mixed with water and rolled 3 hours.
Using the main performance index for the steel moulder's paint that 1 the method for the embodiment of the present invention is prepared are as follows: 1, density: big
In 1.5g/cm3；2, refractoriness: 1800 DEG C；3, gas forming amount is less than 20；4, it is big to be greater than 98,24 hours suspensions for 2 hours suspensions
In 95；5, solid content is greater than 70；6, Baume degrees is greater than 100, can substitute the high-end steel moulder's paint of zirconium English powder completely.
In addition, on the basis of the formula of the embodiment of the present invention can according to require recycling zirconium powder and silicon powder mixture in plus
Enter other cheap aggregates (such as embodiment 6) such as 85 grades of alumines, it is lower in cost while can satisfy general steel-casting
Requirement.Coating layer thickness 0.25mm, casting sintering fissility is good, and artificial sand removal workload is minimum.
Meanwhile coating of the present invention can also be unstressed sprayed coating (such as embodiment 7), replace lithium base with organobentonite
Bentonite causes organoclay with pure water and makes suspending agent, and casting sand is quartz sand, and binder uses clay.Coating layer thickness
0.2mm, coating non-scale after spraying do not crack, and place 24 hours in air, and surface alcohol will volatilize and spontaneously dry,
Without drying of lighting a fire.Alumine can be adulterated depending on castings desire, in refractory aggregate and even recycles mullite material, and cost is lower.
The compound zirconium oxide powder that technique described in selection embodiment 1 obtains is according to GB/T21114-2007, GB/T4984-
2007 (25 DEG C, 60%RH) detect its chemical component, as a result such as table 1:
1 compound zirconium oxide powder chemical composition analysis data of table
Claims (3)
1. a kind of steel moulder's paint, the raw material composition of the coating includes refractory aggregate, suspension stabilizer, solvent, binder, spy
Sign is:
The refractory aggregate includes recycling zirconium powder, and the recycling zirconium powder is made using following recovery process:
Washing first is carried out to zirconium oxide waste material or shaking table cleans, obtains slurry, then the slurry is dried to obtain prefabricated mixing
Then pre-mixture ball milling is obtained recycling zirconium powder by object, wherein the zirconium oxide waste material is that A class, B class, C class or D class are useless
Material, the A class waste material are the zirconium oxide waste material that zircite product processing generates, and the raw material composition and weight percent of siccative contain
Amount are as follows: zirconium oxide 88~93, yttrium oxide 2~10, iron oxide are below 0.1 lower than 0.2, meal with wine scaling loss amount 1~2, other impurities；Institute
State the zirconium oxide waste material that generates in the production process that B class waste material is zircite product raw material, the raw material composition of siccative and again
Measure degree are as follows: zirconium oxide 80~91, yttrium oxide 2~5, ammonium chloride 5~15, iron oxide are equal lower than 0.02, other impurities
Lower than 0.1；The C class waste material is the zirconia material of scrapping after the use of zirconium oxide product, raw material composition and weight percent
Content are as follows: zirconium oxide 80~85, yttrium oxide 2~5, ammonium chloride 5~15, iron oxide are below 0.1 lower than 0.02, other impurities；
The D class waste material is zirconium column abrasive material, raw material composition and weight percent content are as follows: zirconium oxide 59, aluminium oxide 38, yttrium oxide
1, other impurities are below 0.2.
2. a kind of steel moulder's paint according to claim 1, it is characterised in that: the refractory aggregate further includes silicon powder, and
The weight percent content of zirconium oxide is 40~67 in the refractory aggregate.
3. a kind of steel moulder's paint according to claim 1, it is characterised in that:
The suspension stabilizer is lithium bentonite or organobentonite, and the solvent is pure water, alcohols solvent or finish, institute
Stating binder is at least one of clay, silica solution, rosin.
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| Publication number | Priority date | Publication date | Assignee | Title |
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