CN108484137A - A kind of preparation method of the high-purity corundum material of high abrasion resistance - Google Patents
A kind of preparation method of the high-purity corundum material of high abrasion resistance Download PDFInfo
- Publication number
- CN108484137A CN108484137A CN201810485456.XA CN201810485456A CN108484137A CN 108484137 A CN108484137 A CN 108484137A CN 201810485456 A CN201810485456 A CN 201810485456A CN 108484137 A CN108484137 A CN 108484137A
- Authority
- CN
- China
- Prior art keywords
- powder
- fine powder
- metallic aluminium
- purity corundum
- abrasion resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
The invention discloses a kind of high-purity corundum material preparation methods of high abrasion resistance.This material is added interim combination agent, is mixed through edge runner using alumina particle, aluminum oxide fine powder, metallic aluminium powder as starting material, machine is pressed or vibration extrusion forming, green body after drying, is burnt under high temperature kiln internal oxidition atmosphere, and maximum sintering temperature is 1600 DEG C 1800 DEG C.When molding, using the plasticity of metallic aluminium powder, fine and close green body can be made with lower briquetting pressure.When firing, the liquid phase that metallic aluminium powder generates accelerates material transport and green body is shunk and the high activity of metallic aluminium powder oxidation product, can be preferably sintered not introducing other impurities.This material matrix, matrix and diamond retention are very strong, by wear-resisting Experimental comparison, are promoted than conventional high-purity corundum material wear ability notable.
Description
Technical field
The invention belongs to fire resisting material fields, and in particular to a kind of preparation side of the high-purity corundum material of high abrasion resistance
Method.
Background technology
During zinc oxygen leaching, zinc concentrate is the progress acidleach in an autoclave, and control temperature range is 145
DEG C~150 DEG C, oxygen-enriched atmosphere stagnation pressure reaches 1100KPa；Zinc concentrate is leached the ferric iron generated in reaction and aoxidizes to generate
The sulfate and elementary sulfur of zinc；Ferric ion is reduced in the reaction, but again by the oxygen re-oxidation in autoclave, from
And can go to leach more zinc concentrates, the iron of Excessive lysis can be sunk in the form of hydroxide or jarosite simultaneously
It forms sediment；Inner lining material of the corundum brick as grinder；Top position is contacted without acid solution inside grinder, but there are abrasive media punchings
Brush, position on the lower contact acid solution, and the main component of acid solution is sulfuric acid 200g/L, are secondly hydrochloric acid 1g/L and hydrofluoric acid 60mg/
L；Abrasive media is the strontium stabilizing zirconia pearl of diameter about 1.5mm；Grinder inner vanes rotating speed is 200r/min.
The service condition of liner corundum brick is at present：Liner corundum brick will be needed after using about 3 months because of abrasion
It replaces, upper and lower part abrasion condition is consistent；The liner used when equipment is introduced earliest is stainless steel, and service condition is bad,
The brick containing chrome brick and silicon carbide-containing that early period carries out, all because using effect is not satisfactory under strongly acidic conditions.
The damage form of refractory material in use mainly has chemical erosion, corrode peeling and erosion etc.；As resistance to
The erosion of main one of the damage mode of fiery material is complicated, has both included chemical wear, also includes the machine of gas, liquid, solid
Tool is washed away and is denuded, as high-speed flow carries solid dust particle returning to upper blast furnace, air port and cycle fluidized-bed combustion boiler
The impact wear etc. of glassware, mixing indoor wall etc. refractory material.Materials microstructure structure is to influence refractory product wearability
This quality factor.In general, the hardness of raw material is bigger, and the bond strength of aggregate and matrix is higher, and wearability is better.Due to fire resisting
Material is heterogeneous body, and matrix position is the weak link of material, and erosive wear is also therefore the base since matrix position
Matter and the bond strength of particle influence bigger to the wearability of material.
In order to study the material for adapting to highly acid, high abrasion, the impurity content for reducing corundum brick, the burning of such material are needed
Knot property will substantially reduce.If nano powder is added, since hardly possible is disperseed, sintering effect is simultaneously bad；For high under strongly acidic conditions
Not related patents and the research of wear-resistant material.
Invention content
In order to meet the working condition of highly acid, high abrasion, the object of the present invention is to provide a kind of height of high abrasion resistance
The preparation method of pure corundum material.
The present invention is to complete above-mentioned purpose to adopt the following technical scheme that：
A kind of preparation method of the high-purity corundum material of high abrasion resistance, the raw material composition and mass percent of high-purity corundum material
For：
Aluminium oxide aggregate 45-70%；
Aluminum oxide fine powder 20-50%；
Metallic aluminium powder 0.1-10%；
The aluminium oxide aggregate is one or more, the granularity 3-0.088mm of sintered alumina, fused alumina；It is described
Aluminum oxide fine powder be sintered alumina fine powder, fused alumina fine powder it is one or more, powder particle size be≤0.088mm；
It is that PVA solution or water is added as starting material by the aluminium oxide aggregate, aluminum oxide fine powder, metallic aluminium powder of aforementioned proportion
Property resin or calcium lignosulfonate solution as bonding agent, mixed through edge runner, machine pressure or vibration extrusion forming, green body is through drying
Afterwards, it is burnt under high temperature kiln oxidizing atmosphere, maximum sintering temperature is 1600 DEG C -1800 DEG C.
The raw material is the high pure raw material of magazine quality ＜ 0.5%, firing resulting materials Al2O3＞ 99.5%.
A kind of preparation method of the high-purity corundum material of high abrasion resistance proposed by the present invention, compared with prior art, this
Sintering aid of the invention without adding low melting point, in the case where firing temperature does not increase or decrease, the wearability of product is significantly
It is promoted；When molding, using the plasticity of metallic aluminium powder, fine and close green body can be made with lower briquetting pressure；When firing, gold
Belong to the liquid phase that aluminium powder generates and accelerate material transport and green body contraction, the high activity of oxidation product makes material sintering be easier to burn
Knot, and avoid using nano alumina powder or other low melting point sintering aids；This material has high resistance under strongly acidic conditions
The advantages of mill, substantially increases the service life of zinc oxygen leaching autoclave inner lining material, and is suitable for other high abrasion environment.
Description of the drawings
Fig. 1 is three kinds of different High purity corundum brick Contrast of Wear Resistance figures；
Fig. 2 is three kinds of different High purity corundum brick Contrast of Wear Resistance datagrams.
Specific implementation mode
In order to absolutely prove the features of the present invention, now present invention citing is illustrated, but the specific embodiment party of the present invention
Formula is not limited to following instance, can carry out project setting appropriate according to actual conditions within the allowable range：
The present invention will be described in conjunction with specific embodiments：
Embodiment one：
The raw material of the high-purity corundum material of high abrasion resistance forms and mass percent is：Sintered alumina aggregate 60% is sintered oxygen
Change aluminium fine powder 35%, metallic aluminium powder 5%；Particle part first is added in 6% water-base resin, is uniformly mixed with edge runner, then will use
Edge runner is added in the fine fraction that V-type batch mixer mixes, and stirring 5 ~ discharge after ten minutes is press-formed, 110 DEG C using vibration
It is dry；By 1720 DEG C of heat preservation 8h firings, close product body is 3.30g/cm3, the porosity 14.1%, cold crushing strength exists
180MPa；With reference to GB/T18301《Refractory material room temperature abrasion test method》, using the compressed air of 448kPa by 1000g
± 5g standard silicon carbide silica sands（36#）It is 2.74cm to carry out injection wear test wear volume to corundum brick in 450s ± 15s3,
It is as shown in Fig. 1 that wearability improves contrast effect.
Embodiment two：
The raw material of the high-purity corundum material of high abrasion resistance forms and mass percent is：Fused alumina aggregate 30% is sintered oxygen
Change aluminium aggregate 30%, sintered alumina fine powder 30%, metallic aluminium powder 10%.Particle part first is added in 7% PVA solution, uses rolling
Machine is uniformly mixed, then will use the fine fraction that V-type batch mixer mixes that edge runner is added, and stirring 5 ~ discharge after ten minutes makes
It is press-formed with vibration, 110 DEG C of dryings.By 1650 DEG C of heat preservation 8h firings, close product body is 3.07g/cm3, the porosity is
18.0%, cold crushing strength is in 206MPa.With reference to GB/T18301《Refractory material room temperature abrasion test method》, use
The compressed air of 448kPa is by 1000g ± 5g standard silicon carbide silica sands（36#）Injection abrasion is carried out to corundum brick in 450s ± 15s
Experiment wear volume is 2.35cm3。
Embodiment three：
The raw material of the high-purity corundum material of high abrasion resistance forms and mass percent is：Sintered alumina aggregate 60% is sintered oxygen
Change aluminium fine powder 39%, metallic aluminium powder 1%.Particle part first is added in 7% calcium lignosulfonate solution, is uniformly mixed with edge runner,
The fine fraction that V-type batch mixer mixes will be used to be added edge runner again, stirring 5 ~ discharge after ten minutes, using vibration pressurization at
Type, 110 DEG C of dryings.By 1700 DEG C of heat preservation 10h firings, close product body is 3.25g/cm3, the porosity 15.3%, room temperature pressure resistance
Intensity is in 150MPa.With reference to GB/T18301《Refractory material room temperature abrasion test method》, will using the compressed air of 448kPa
1000g ± 5g standard silicon carbide silica sands（36#）Carrying out injection wear test wear volume to corundum brick in 450s ± 15s is
3.04cm3。
Example IV：
The raw material of the high-purity corundum material of high abrasion resistance forms and mass percent is：Sintered alumina aggregate 45% is sintered oxygen
Change aluminium fine powder 30%, fused alumina fine powder 20%, metallic aluminium powder 5%.Particle part first is added in 3% water-base resin, uses rolling
Machine is uniformly mixed, then will use the fine fraction that V-type batch mixer mixes that edge runner is added, and stirring 5 ~ discharge after ten minutes makes
With mechanical pressing, 110 DEG C of dryings.By 1680 DEG C of heat preservation 8h firings, close product body is 3.28g/cm3, the porosity 15.1%,
Cold crushing strength is in 165MPa.With reference to GB/T18301《Refractory material room temperature abrasion test method》, using the pressure of 448kPa
Contracting air is by 1000g ± 5g standard silicon carbide silica sands（36#）Injection wear test is carried out to corundum brick in 450s ± 15s and wears body
Product is 2.53cm3。
Embodiment five：
The raw material of the high-purity corundum material of high abrasion resistance forms and mass percent is：Sintered alumina aggregate 60%, electric smelting oxygen
Change aluminium fine powder 32%, metallic aluminium powder 8%.Particle part first is added in 3% PVA solution, is uniformly mixed with edge runner, then V will be used
Edge runner is added in the fine fraction that type batch mixer mixes, and stirring 5 ~ discharge after ten minutes uses mechanical pressing, 110 DEG C of dryings.
By 1740 DEG C of heat preservation 8h firings, close product body is 3.12g/cm3, the porosity 16.3%, cold crushing strength is in 253MPa.
With reference to GB/T18301《Refractory material room temperature abrasion test method》, using the compressed air of 448kPa by 1000g ± 5g standards
Silicon carbide sand（36#）It is 2.12cm to carry out injection wear test wear volume to corundum brick in 450s ± 15s3。
With reference to GB/T18301《Refractory material room temperature abrasion test method》, using the compressed air of 448kPa by 1000g
± 5g standard silicon carbide silica sands（36#）Injection wear test is carried out to 3 kinds of corundum bricks in 450s ± 15s, as shown in Figure 1, gained
Wear volume is shown in Fig. 2.
It is more high-purity than conventional using fine and close High purity corundum brick high abrasion resistance of the present invention by the comparison of wearability
Corundum brick wearability improves 3 ~ 4 times.
The high-purity corundum material of high abrasion resistance prepared using the present invention under strong acid as the inner lining material of grinder,
Service life reaches 1 year or more, and is still being continuing with.
Claims (2)
1. a kind of preparation method of the high-purity corundum material of high abrasion resistance, it is characterised in that：The raw material group of high-purity corundum material
At and mass percent be：
Aluminium oxide aggregate 45-70%；
Aluminum oxide fine powder 20-50%；
Metallic aluminium powder 0.1-10%；
The aluminium oxide aggregate is one or more, the granularity 3-0.088mm of sintered alumina, fused alumina；It is described
Aluminum oxide fine powder be sintered alumina fine powder, fused alumina fine powder it is one or more, powder particle size be≤0.088mm；
It is that PVA solution or water is added as starting material by the aluminium oxide aggregate, aluminum oxide fine powder, metallic aluminium powder of aforementioned proportion
Property resin or calcium lignosulfonate solution as bonding agent, mixed through edge runner, machine pressure or vibration extrusion forming, green body is through drying
Afterwards, it is burnt under high temperature kiln oxidizing atmosphere, maximum sintering temperature is 1600 DEG C -1800 DEG C.
2. a kind of preparation method of the high-purity corundum material of high abrasion resistance as described in claim 1, it is characterised in that：It is described
Raw material be magazine quality ＜ 0.5% high pure raw material, firing resulting materials Al2O3＞ 99.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485456.XA CN108484137A (en) | 2018-05-21 | 2018-05-21 | A kind of preparation method of the high-purity corundum material of high abrasion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485456.XA CN108484137A (en) | 2018-05-21 | 2018-05-21 | A kind of preparation method of the high-purity corundum material of high abrasion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108484137A true CN108484137A (en) | 2018-09-04 |
Family
ID=63353300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485456.XA Pending CN108484137A (en) | 2018-05-21 | 2018-05-21 | A kind of preparation method of the high-purity corundum material of high abrasion resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108484137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892488A (en) * | 2018-09-11 | 2018-11-27 | 长兴鑫鼎耐火材料厂(普通合伙） | A kind of toughening refractory material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341572A (en) * | 2000-09-06 | 2002-03-27 | 冶金工业部洛阳耐火材料研究院 | High-purity diamond spar product |
| JP2002179456A (en) * | 2000-12-14 | 2002-06-26 | Matsushita Electric Ind Co Ltd | Burning process of ferrite core and burning tool |
| CN103880441A (en) * | 2014-02-19 | 2014-06-25 | 江苏晶鑫高温材料有限公司 | Microporous lightweight corundum refractory aggregate and preparation method thereof |
| CN105399432A (en) * | 2015-11-23 | 2016-03-16 | 宜兴瑞泰耐火材料有限公司 | High-strength, high-purity and low-silicon corundum brick for petrochemical industry, and preparation method for corundum brick |
| CN105601259A (en) * | 2015-12-29 | 2016-05-25 | 通达耐火技术股份有限公司 | Method using high bauxite crushed aggregates to produce and prepare sintered alumina |
-
2018
- 2018-05-21 CN CN201810485456.XA patent/CN108484137A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341572A (en) * | 2000-09-06 | 2002-03-27 | 冶金工业部洛阳耐火材料研究院 | High-purity diamond spar product |
| JP2002179456A (en) * | 2000-12-14 | 2002-06-26 | Matsushita Electric Ind Co Ltd | Burning process of ferrite core and burning tool |
| CN103880441A (en) * | 2014-02-19 | 2014-06-25 | 江苏晶鑫高温材料有限公司 | Microporous lightweight corundum refractory aggregate and preparation method thereof |
| CN105399432A (en) * | 2015-11-23 | 2016-03-16 | 宜兴瑞泰耐火材料有限公司 | High-strength, high-purity and low-silicon corundum brick for petrochemical industry, and preparation method for corundum brick |
| CN105601259A (en) * | 2015-12-29 | 2016-05-25 | 通达耐火技术股份有限公司 | Method using high bauxite crushed aggregates to produce and prepare sintered alumina |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892488A (en) * | 2018-09-11 | 2018-11-27 | 长兴鑫鼎耐火材料厂(普通合伙） | A kind of toughening refractory material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103382116B (en) | Zirconium-containing high-strength wear-resistant castable | |
| CN106938922B (en) | Silicon corundum abrasive brick | |
| CN107108369A (en) | Refractory product and its application | |
| CN108083765B (en) | Low-heat-conduction anti-stripping brick and preparation method thereof | |
| US7232780B2 (en) | Yttria containing high-density chrome based refractory composites | |
| CN101921128A (en) | Pouring material for lime rotary kiln | |
| CN108751957A (en) | A kind of carbon-free high-purity magnalium pressed machine brick of refined steel ladles and preparation method thereof | |
| CN108395218A (en) | A kind of low carbon magnesia carbon brick and preparation method thereof prepared using modified magnesia | |
| CN108546093B (en) | Alumina short fiber reinforced magnesium oxide base crucible and preparation method thereof | |
| CN106747510A (en) | One kind is without silicon powder iron runner castable and preparation method thereof | |
| CN110483023B (en) | Microporous corundum brick and preparation method thereof | |
| CN109851333B (en) | Nano sol combined wear-resisting plate for blast furnace main iron runner and preparation method and application thereof | |
| CN110606733A (en) | Modified magnesia carbon brick and preparation method thereof | |
| CN112225541B (en) | Electric furnace gunning material and gunning furnace protection method | |
| CN108484137A (en) | A kind of preparation method of the high-purity corundum material of high abrasion resistance | |
| JP4094353B2 (en) | Rare earth metal-containing amorphous refractory and construction body and kiln furnace lined with these | |
| CN107382345B (en) | Preparation method of micro-nano spinel toughened MgO-MA aggregate | |
| CN107043265A (en) | A kind of metallurgical, coloured smelting furnace is not with burning magnesite-chrome brick and preparation method thereof | |
| CN103896606A (en) | Fire-resistant material for blast furnace ceramic cup | |
| CN112897994A (en) | Preparation method of corundum spinel complex phase material | |
| CN110627484A (en) | Refractory brick and preparation method thereof | |
| CN108439959B (en) | Zirconium dioxide short fiber and magnesium oxysulfate whisker composite reinforced magnesium oxide-based crucible and preparation method thereof | |
| CN101602603B (en) | Molten iron erosion-resisting blast furnace carbon brick and preparation method thereof | |
| RU2563469C1 (en) | Fireproof structural ceramic material | |
| CN106365659A (en) | Corundum abrasion-resistant and corrosion-resistant castable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180904 |
|
| RJ01 | Rejection of invention patent application after publication |