CN106588041A - Wet-method production process for composite alumina - Google Patents
Wet-method production process for composite alumina Download PDFInfo
- Publication number
- CN106588041A CN106588041A CN201610999186.5A CN201610999186A CN106588041A CN 106588041 A CN106588041 A CN 106588041A CN 201610999186 A CN201610999186 A CN 201610999186A CN 106588041 A CN106588041 A CN 106588041A
- Authority
- CN
- China
- Prior art keywords
- alumina
- mud
- wet process
- process technique
- alumine
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6264—Mixing media, e.g. organic solvents
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Treatment Of Sludge (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a wet-method production process for composite alumina, wherein high-aluminum alumina and a magnesium material are used as main raw materials. The wet-method production process particularly includes the following steps: 1) crushing the high-aluminum alumina into granules and mixing the high-aluminum alumina, the magnesium material, a binder and water, and grinding the mixture to form slurry A; 2) dehydration: performing press filtering dehydration to the slurry A in a press filter to prepare a mud cake B; 3) vacuum pugging: performing vacuum pugging to the mud cake B in a vacuum mud extruder, and performing extrusion and cutting to form mud bars C; 4) drying: drying the mud bars C in a drying apparatus to prepare a mud material D; and 5) calcination: burning the mud material D in a kiln to produce the composite alumina. In the composite alumina, corundum phase, spinel phase and the like are main crystalline phases, so that the composite alumina has excellent thermal shock resistance, slag resistance and the like.
Description
Technical field
The invention belongs to technical field of refractory materials, and in particular to a kind of wet process technique of compound Alumina.
Background technology
Bauxite chamotte has higher refractoriness and load softening point, but its thermal shock resistance is poor, antiacid alkali erosiveness
Difference.Therefore, it is contemplated that improving the thermal shock resistance and resistance to slag of common Alumina.The present invention is with alumine and magnesian
Used as main material, using bonding agent as auxiliary using a kind of brand-new compound Alumina of wet processing synthesis, which not only has common
The advantages of high intensity of Alumina, big density, high refractoriness, also with good thermal shock resistance, resistance to slag etc., be one kind with firm
Beautiful phase, wants the brand-new composite of crystalline phase based on spinelle is equal.
The content of the invention
Present invention aim to overcome that prior art defect, there is provided a kind of wet process technique of compound Alumina, adopting should
Technique productions obtain compound Alumina with corundum phase, want crystalline phase based on spinelle is equal, with good thermal shock resistance, resistance to slag
Deng.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of wet process technique of compound Alumina, which is specifically included following using alumine and magnesian as main material
Step：
1）Dispensing, grinding：Alumine is broken into into the granule less than 5mm, then by alumine, magnesian, bonding agent
Mix with water, grinding obtains slurry a（Averagely per 10 hours blowings once）；
2）Dehydration：By slurry a in pressure filter filter-press dehydration, obtain mud cake b；
3）Vacuum pugging：Vacuum pugging is carried out to mud cake b using de-airing extruder, mud section c is formed Jing after extruding, cutting；
4）Drying：Mud section c is sent in drying unit and is dried, obtain pug d；
5）Calcining：Pug d is sent in kiln and is fired, obtain compound Alumina.
Specifically, step 1）In, by percentage to the quality, alumine is 90-95%, magnesium for alumine and magnesian
Material is 5-10%；The magnesian can be magnesite clinker, caustic-calcined magnesite or magnesite etc..
Step 1）In, described bonding agent includes Guangxi white clay and lignosulfonates, wherein, the addition of Guangxi white clay
Based on raw materials quality 0.5-1%, the 0.1-0.3% of raw materials quality based on lignosulfonates addition.Step 1）In, water adds
Dosage is 0.8-1.0 times of main material quality；In the slurry a that grinding is obtained, 500 mesh screen residue of granularity of granule is less than 1%.
Specifically, step 2）In, during filter-press dehydration, pressure cannot be greater than 2.5MPa, and gained mud cake b moisture is less than 22%.Can
The pressure of pressure filter, general filter pressing 8-10 minutes are adjusted according to mud cake moisture requirement.
Further, step 3）In, de-airing extruder vacuum is not less than 0.085MPa.
Preferably, step 4）In, the pug d residual moistures for obtaining are dried less than 1%, preferred pug d residual moistures are
0.5%。
Step 4）In, drying temperature is 250-280 DEG C, and drying time is 60-90 minutes.
Specifically, step 5）In, calcination condition is：Calcining heat 1600-1650 DEG C, temperature retention time 15-30 minute, always forges
Burning time 10-15 hours.Step 5）In, the kiln is rotary kiln.
Compared to the prior art, the present invention has advantages below using the compound Alumina of wet processing production：
1：It is stable through the product quality of wet method homogenizing synthesis technique production, physical and chemical index fluctuation<0.5%, solve cast alumin(i)um vitriol
Native quality fluctuation is big, grade is low, utilization rate is low, be unable to reasonable development the problems such as use.
2：Used using the various bonding agent compatibilities such as lignosulfonates, Guangxi white clay, solve wet moulding material into
Type rate is low, the low problem of low medium temperature intensity so as to which in wet production, after molding, mud section, in transport, is not crushed in calcination process, no
Play powder.And the bonding agent for being added does not bring any impurity into, compound Alumina applied at elevated temperature is had no adverse effect, it is ensured that compound
Alumina product quality.
3 adopt wet processing, add certain water to carry out wet mixing alumine and magnesian, as hydrone is grinding
Narrow area is diffused to along material capillary wall or micro-crack in mill, the pressure of about 0.1mpa is produced to four walls of crackle, is made
Easily splitting is opened to obtain material, it can in addition contain promote various raw material mix homogeneously.
4 adopt vacuum deairing machine molding, and the volume of air being combined in Alumina pug can be made to be reduced to by original 7-10%
0.5-1%, composition are more uniform, and plasticity and density are increased, it is ensured that the body after blank strength and calcining after molding
Product density.
5 are produced by the compound Alumina smoke dust of wet method homogenizing process synthesis, and labor intensity is low, with good energy-conserving and environment-protective
Feature.
Specific embodiment
With reference to embodiments technical scheme is further discussed in detail, but protection scope of the present invention
It is not limited thereto.
Embodiment 1
A kind of wet process technique of compound Alumina, which is made with alumine rawore that alumina content is 75% and caustic-calcined magnesite
For main material, following steps are specifically included：
1）Dispensing, grinding：Alumine is broken into into the granule less than 5mm, then by alumine, magnesian, bonding agent
With 0.9 times of the water mixing of main material quality, grind and obtain slurry a, 500 mesh screen residue of granularity of granule is less than 1% in slurry a；High alumina
By percentage to the quality, alumine is 95% for Alumina and caustic-calcined magnesite, and caustic-calcined magnesite is 5%；The bonding agent includes Guangxi White
Mud and lignosulfonates, wherein, the 0.5% of raw materials quality based on the addition of Guangxi white clay, lignosulfonates addition is
The 0.3% of main material quality；
2）Dehydration：By slurry a in pressure filter filter-press dehydration（Pressure 2.5MPa）, obtain mud cake b, mud cake b moisture 20%；
3）Vacuum pugging：Vacuum pugging is carried out to mud cake b using de-airing extruder（Vacuum 0.085MPa）, through extruding, cutting
Diameter 20mm, mud section c of length 50mm are formed after cutting；
4）Drying：Mud section c being sent in dehydrator and 60min being dried in 280 DEG C, obtain pug d, pug d residual moistures are 0.5%；
5）Calcining：Pug d is sent in rotary kiln and is calcined（1620 DEG C of calcining heat, temperature retention time 20 minutes, total calcination time 12
Hour）, obtain compound Alumina.
In the compound Alumina of production gained, Jing XRD detection corundum phases and Spinel reach 90%.Produced using this technique
Compound Alumina in production application, its resistance to slag, thermal shock resistance are substantially better than common Alumina.
Embodiment 2
A kind of wet process technique of compound Alumina, which is made with alumine rawore that alumina content is 75% and caustic-calcined magnesite
For main material, following steps are specifically included：
1）Dispensing, grinding：Alumine is broken into into the granule less than 5mm, then by alumine, magnesian, bonding agent
With 1.0 times of the water mixing of main material quality, grind and obtain slurry a, 500 mesh screen residue of granularity of granule is less than 1% in slurry a；High alumina
By percentage to the quality, alumine is 92% for Alumina and caustic-calcined magnesite, and caustic-calcined magnesite is 8%；The bonding agent includes Guangxi White
Mud and lignosulfonates, wherein, the 0.8% of raw materials quality based on the addition of Guangxi white clay, lignosulfonates addition is
The 0.2% of main material quality；
2）Dehydration：By slurry a in pressure filter filter-press dehydration（Pressure 2.5MPa）, obtain mud cake b, mud cake b moisture 20%；
3）Vacuum pugging：Vacuum pugging is carried out to mud cake b using de-airing extruder（Vacuum 0.085MPa）, through extruding, cutting
Diameter 20mm, mud section c of length 50mm are formed after cutting；
4）Drying：Mud section c being sent in dehydrator and 70min being dried in 270 DEG C, obtain pug d, pug d residual moistures are 0.5%；
5）Calcining：Pug d is sent in rotary kiln and is calcined（1600 DEG C of calcining heat, temperature retention time 30 minutes, total calcination time 15
Hour）, obtain compound Alumina.
In the compound Alumina of production gained, Jing XRD detection corundum phases and Spinel reach 91%.
Embodiment 3
A kind of wet process technique of compound Alumina, which is made with alumine rawore that alumina content is 75% and caustic-calcined magnesite
For main material, following steps are specifically included：
1）Dispensing, grinding：Alumine is broken into into the granule less than 5mm, then by alumine, magnesian, bonding agent
With 0.8 times of the water mixing of main material quality, grind and obtain slurry a, 500 mesh screen residue of granularity of granule is less than 1% in slurry a；High alumina
By percentage to the quality, alumine is 90% for Alumina and caustic-calcined magnesite, and caustic-calcined magnesite is 10%；The bonding agent includes Guangxi White
Mud and lignosulfonates, wherein, the 1% of raw materials quality based on the addition of Guangxi white clay, based on lignosulfonates addition
The 0.1% of raw materials quality；
2）Dehydration：By slurry a in pressure filter filter-press dehydration（Pressure 2.5MPa）, obtain mud cake b, mud cake b moisture 20%；
3）Vacuum pugging：Vacuum pugging is carried out to mud cake b using de-airing extruder（Vacuum 0.085MPa）, through extruding, cutting
Diameter 20mm, mud section c of length 50mm are formed after cutting；
4）Drying：Mud section c being sent in dehydrator and 90min being dried in 250 DEG C, obtain pug d, pug d residual moistures are 0.5%；
5）Calcining：Pug d is sent in rotary kiln and is calcined（1650 DEG C of calcining heat, temperature retention time 15 minutes, total calcination time 10
Hour）, obtain compound Alumina.
In the compound Alumina of production gained, Jing XRD detection corundum phases and Spinel reach 91%.
Claims (9)
1. a kind of wet process technique of compound Alumina, it is characterised in that using alumine and magnesian as main material, tool
Body is comprised the following steps：
1）Dispensing, grinding：Alumine is broken into into granule, then alumine, magnesian, bonding agent and water is mixed,
Grinding obtains slurry a；
2）Dehydration：By slurry a in pressure filter filter-press dehydration, obtain mud cake b；
3）Vacuum pugging：Vacuum pugging is carried out to mud cake b using de-airing extruder, mud section c is formed Jing after extruding, cutting；
4）Drying：Mud section c is sent in drying unit and is dried, obtain pug d；
5）Calcining：Pug d is sent in kiln and is fired, obtain compound Alumina.
2. the wet process technique of Alumina is combined according to claim 1, it is characterised in that step 1）In, alumine and
By percentage to the quality, alumine is 90-95% to magnesian, and magnesian is 5-10%；The magnesian is sintering magnesium
Sand, caustic-calcined magnesite or magnesite.
3. the wet process technique of Alumina is combined according to claim 1, it is characterised in that：Step 1）In, described combination
Agent includes Guangxi white clay and lignosulfonates, wherein, the 0.5-1% of raw materials quality, lignin based on the addition of Guangxi white clay
The 0.1-0.3% of raw materials quality based on sulfonate addition；The addition of water is 0.8-1.0 times of main material quality；In slurry a
500 mesh screen residue of granularity of granule is less than 1%.
4. the wet process technique of Alumina is combined according to claim 1, it is characterised in that：Step 2）In, during filter-press dehydration
Pressure cannot be greater than 2.5MPa, and gained mud cake b moisture is less than 22%.
5. the wet process technique of Alumina is combined according to claim 1, it is characterised in that：Step 3）In, de-airing extruder
Vacuum is not less than 0.085MPa.
6. the wet process technique of Alumina is combined according to claim 1, it is characterised in that：Step 4）In, what drying was obtained
Pug d residual moistures are less than 1%.
7. the wet process technique of Alumina is combined according to claim 6, it is characterised in that：Step 4）In, drying temperature is
250-280 DEG C, drying time is 60-90 minutes.
8. the wet process technique of Alumina is combined according to claim 5, it is characterised in that：Step 5）In, calcination condition is：
Calcining heat 1600-1650 DEG C, temperature retention time 15-30 minute, total calcination time 10-15 hours.
9. the wet process technique of Alumina is combined according to claim 8, it is characterised in that：Step 5）In, the kiln is
Rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999186.5A CN106588041A (en) | 2016-11-14 | 2016-11-14 | Wet-method production process for composite alumina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999186.5A CN106588041A (en) | 2016-11-14 | 2016-11-14 | Wet-method production process for composite alumina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106588041A true CN106588041A (en) | 2017-04-26 |
Family
ID=58590096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610999186.5A Pending CN106588041A (en) | 2016-11-14 | 2016-11-14 | Wet-method production process for composite alumina |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106588041A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986620A (en) * | 2017-05-12 | 2017-07-28 | 介休市创新实业有限公司 | Sodium metasilicate kiln specific complex castable |
| CN110561591A (en) * | 2019-09-22 | 2019-12-13 | 安徽华梦检测科技有限公司 | resource detection treatment method for soil solid waste |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664144A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet production process of sintered alumina |
| CN103664206A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet process production technology for sintering cordierite |
| CN103664207A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet sintering production method for alumina-based magnesium aluminate spinel |
| CN104446390A (en) * | 2014-11-26 | 2015-03-25 | 江苏晶鑫新材料股份有限公司 | Preparation method for magnetism-containing modified corundum composite material |
-
2016
- 2016-11-14 CN CN201610999186.5A patent/CN106588041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664144A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet production process of sintered alumina |
| CN103664206A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet process production technology for sintering cordierite |
| CN103664207A (en) * | 2013-11-26 | 2014-03-26 | 河南容安热工新材料有限公司 | Wet sintering production method for alumina-based magnesium aluminate spinel |
| CN104446390A (en) * | 2014-11-26 | 2015-03-25 | 江苏晶鑫新材料股份有限公司 | Preparation method for magnetism-containing modified corundum composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986620A (en) * | 2017-05-12 | 2017-07-28 | 介休市创新实业有限公司 | Sodium metasilicate kiln specific complex castable |
| CN110561591A (en) * | 2019-09-22 | 2019-12-13 | 安徽华梦检测科技有限公司 | resource detection treatment method for soil solid waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105980330B (en) | Stoneware refractory product and preparation method thereof and application | |
| CN109320222B (en) | Preparation method of cordierite-mullite ceramic sagger | |
| CN106278321B (en) | A kind of high tenacity refractory material and its preparation process | |
| CN104003755B (en) | A kind of technique of utilizing polishing slag preparation to breathe brick | |
| CN103664206B (en) | Wet process production technology for sintering cordierite | |
| CN106365651B (en) | The preparation method of spherical aggregate enhancing refractory material | |
| CN103232253B (en) | Method for producing homogenous refractory raw material by utilizing medium or low grade bauxite ore | |
| JP5776749B2 (en) | Cement-based solidified concrete sludge heat-dried powder and method for producing the same | |
| CN103664207A (en) | Wet sintering production method for alumina-based magnesium aluminate spinel | |
| CN103553658A (en) | Impermeable brick for aluminum reduction cell and preparation method thereof | |
| CN102850066A (en) | Anti-skinning and wear-resistant brick used for cement rotary kiln and preparation method for brick | |
| CN107935608A (en) | The method that zircon brick is prepared using compact zircon aggregate | |
| CN106588041A (en) | Wet-method production process for composite alumina | |
| CN104150916A (en) | Insulating brick used at bottom of roasting furnace and preparation method of insulating brick | |
| CN103664144A (en) | Wet production process of sintered alumina | |
| US2311228A (en) | Bauxite ceramic and method of | |
| CN105601259A (en) | Method using high bauxite crushed aggregates to produce and prepare sintered alumina | |
| CN107353032A (en) | A kind of exterior insulation and preparation method using industrial inorganic hazardous waste and fire clay mine tailing as raw material | |
| US3642505A (en) | Manufacture of mullite refractory grain and product | |
| CN103664208A (en) | Wet process sintering production method for hercynite | |
| CN106946585B (en) | Method for preparing low-heat-conductivity magnesia-alumina spinel refractory brick by utilizing artificially synthesized microporous spinel | |
| CN101948320A (en) | Process for producing bauxite homogenized materials in rotary kiln | |
| CN110776308B (en) | High-temperature porcelain and preparation method thereof | |
| CN104496432A (en) | Preparation method of modified sintered corundum | |
| US20050116395A1 (en) | Method for aluminum residue ash recycling utilization |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |