CN112645730A - 一种净化水用多孔陶瓷及其制备方法和应用 - Google Patents

一种净化水用多孔陶瓷及其制备方法和应用 Download PDF

Info

Publication number
CN112645730A
CN112645730A CN202011577664.6A CN202011577664A CN112645730A CN 112645730 A CN112645730 A CN 112645730A CN 202011577664 A CN202011577664 A CN 202011577664A CN 112645730 A CN112645730 A CN 112645730A
Authority
CN
China
Prior art keywords
parts
porous ceramic
raw materials
ball milling
heating
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
Application number
CN202011577664.6A
Other languages
English (en)
Inventor
颜井意
杜建周
艾多梅
江春华
张继才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Meishibang Fine Ceramics Technology Co ltd
Original Assignee
Fujian Meishibang Fine Ceramics Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujian Meishibang Fine Ceramics Technology Co ltd filed Critical Fujian Meishibang Fine Ceramics Technology Co ltd
Priority to CN202011577664.6A priority Critical patent/CN112645730A/zh
Publication of CN112645730A publication Critical patent/CN112645730A/zh
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40Metallic constituents or additives not added as binding phase
    • C04B2235/402Aluminium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422Carbon
    • C04B2235/425Graphite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54Particle size related information
    • C04B2235/5418Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602Making the green bodies or pre-forms by moulding
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562Heating rate
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567Treatment time

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

本发明公开了一种净化水用多孔陶瓷及其制备方法和应用,属于多孔陶瓷材料领域。所述方法包括步骤如下:按重量份计,取多孔陶瓷原料:氮化硅60~80份、铝粉10~20份、氧化铝15~30份、硅藻土10~20份、石墨5~10份、粉煤灰3~8份、聚乙二醇4~8份、聚乙烯醇5~10份和海藻酸钙凝胶5~10份;将所述原料依次经过混合均匀,球磨,过筛,喷雾造粒,压制成坯和烧结成型步骤,得到所述多孔陶瓷。该多孔陶瓷制备简单,成本较低,显气孔率高,具有良好的吸附性和离子交换性,能够有效净化污水。

Description

一种净化水用多孔陶瓷及其制备方法和应用
技术领域
本发明属于多孔陶瓷材料领域,具体涉及一种净化水用多孔陶瓷及其制备方法和应用。
背景技术
随着工业的迅速发展,许多如印染废水、医药废水、固体废物、填埋场渗沥液等,具有排放量大、污染面广、难生物降解等特点,针对污水中的水溶性有机物,无法用混凝沉淀的方式去除,因此去除这类污水一般采取电解、芬顿氧化、生物发酵等方法,但成本高昂成为该类方法的应用瓶颈。
多孔陶瓷是一种新型的功能材料,结合了多孔材料的高比表面积和陶瓷材料的物理、化学稳定性,具有一定尺寸和数量的孔隙结构。由于多孔陶瓷特殊的结构,当滤液通过时,其中的悬浮物、胶体物和微生物等污染物质被阻截在过滤介质表面或内部,同时附着在污染物上的病毒液一并被截留。因此,利用多孔陶瓷进行污水净化处理成为一种效率高、成本低的重要选择。
发明内容
解决的技术问题:针对上述技术问题,本发明提供了一种净化水用多孔陶瓷及其制备方法和应用,该多孔陶瓷制备简单,成本较低,显气孔率高,具有良好的吸附性和离子交换性,能够有效净化污水。
技术方案:一种多孔陶瓷的制备方法,所述方法包括步骤如下:按重量份计,取多孔陶瓷原料:氮化硅60~80份、铝粉10~20份、氧化铝15~30份、硅藻土10~20份、石墨5~10份、粉煤灰3~8份、聚乙二醇4~8份、聚乙烯醇5~10份和海藻酸钙凝胶5~10份;将所述原料依次经过混合均匀,球磨,过筛,喷雾造粒,压制成坯和烧结成型步骤,得到所述多孔陶瓷。
优选的,所述混合均匀步骤包括将所述原料加入占原料总重55%~80%的去离子水中,经超声分散均匀,得到陶瓷预混料。
优选的,所述球磨步骤的球磨介质为无水乙醇,球磨时间为24~36h。
优选的,所述过筛步骤中过筛目数为150~200目。
优选的,所述喷雾造粒步骤的进口温度为250~300℃,出口温度为200~220℃。
优选的,所述压制成坯步骤为挤制成型、干压成型或流延成型。
优选的,所述烧结成型步骤为:在保护气氛下,以3~5℃/min的升温速率升温至300~600℃并保温0.5~1h,接着以2~3℃/min的升温速率升温至1500~1600℃并保温2~3h。
优选的,所述保护气氛为氮气气氛、氦气气氛或其混合气氛。
上述制备方法制得的多孔陶瓷。
上述多孔陶瓷在净化污水中的应用。
有益效果:本发明以氮化硅为基料制备多孔陶瓷,综合了氮化硅和多孔陶瓷的特点,兼具耐高温、抗氧化、耐磨损、耐腐蚀、体积密度小、比表面积大等优点,可以有效进行污水深度处理。铝粉具有较高的还原活性,适宜的铝粉的加入,能够有效增加多孔陶瓷的显气孔率,同时在保护气氛下,有助于氮化铝等增强相的生成,提高了多孔陶瓷的力学性能。硅藻土本身具有多孔结构,适量添加后可以提高气孔率。本发明选用的原料配置使得陶瓷在烧制过程中热量分布更为均匀,从而使得陶瓷上的孔隙分布更为均匀,保证了其过滤能力的稳定性。
本发明原料来源广泛,还利用了粉煤灰一类的工业废弃物,降低了成本;本发明的制备工艺简单,适合于大规模的工业化生产。
本发明制得的多孔陶瓷显气孔率高于55%,气孔分布均匀且呈三维连通状,对污水中的水溶性有机物、细菌等污染物具有良好的过滤拦截性能,能够在污水净化处理中有良好的应用。
具体实施方式
下面结合具体实施例对本发明作进一步描述。
实施例1
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅60份、铝粉15份、氧化铝15份、硅藻土20份、石墨5份、粉煤灰5份、聚乙二醇4份、聚乙烯醇10份和海藻酸钙凝胶5份。
将上述原料加入占原料总重55%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为36h;球磨后进行过筛,过筛目数为200目;再保持进口温度为250℃,出口温度为220℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经干压成型制成素坯,然后在氮气气氛下以3~5℃/min的升温速率升温至400℃并保温1h,接着以2~3℃/min的升温速率升温至1500℃并保温3h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为58%。
实施例2
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅80份、铝粉10份、氧化铝30份、硅藻土20份、石墨10份、粉煤灰8份、聚乙二醇8份、聚乙烯醇5份和海藻酸钙凝胶10份。
将上述原料加入占原料总重80%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为32h;球磨后进行过筛,过筛目数为200目;再保持进口温度为280℃,出口温度为200℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经挤制成型制成素坯,然后在氦气气氛下以3~5℃/min的升温速率升温至300℃并保温1h,接着以2~3℃/min的升温速率升温至1500℃并保温3h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为55%。
实施例3
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅70份、铝粉20份、氧化铝30份、硅藻土10份、石墨10份、粉煤灰3份、聚乙二醇4份、聚乙烯醇8份和海藻酸钙凝胶6份。
将上述原料加入占原料总重60%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为24h;球磨后进行过筛,过筛目数为150目;再保持进口温度为300℃,出口温度为220℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经挤制成型制成素坯,然后在氮气和氦气的混合气氛下以3~5℃/min的升温速率升温至500℃并保温0.5h,接着以2~3℃/min的升温速率升温至1600℃并保温2h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为60%。
实施例4
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅75份、铝粉10份、氧化铝15份、硅藻土20份、石墨5份、粉煤灰5份、聚乙二醇6份、聚乙烯醇8份和海藻酸钙凝胶5份。
将上述原料加入占原料总重65%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为28h;球磨后进行过筛,过筛目数为200目;再保持进口温度为250℃,出口温度为200℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经流延成型制成素坯,然后在氮气气氛下以3~5℃/min的升温速率升温至600℃并保温0.5h,接着以2~3℃/min的升温速率升温至1600℃并保温2h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为56%。
实施例5
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅60份、铝粉10份、氧化铝15份、硅藻土10份、石墨10份、粉煤灰8份、聚乙二醇8份、聚乙烯醇5份和海藻酸钙凝胶6份。
将上述原料加入占原料总重55%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为30h;球磨后进行过筛,过筛目数为150目;再保持进口温度为280℃,出口温度为220℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经干压成型制成素坯,然后在氮气气氛下以3~5℃/min的升温速率升温至400℃并保温1h,接着以2~3℃/min的升温速率升温至1600℃并保温2h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为61%。
实施例6
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅80份、铝粉15份、氧化铝20份、硅藻土15份、石墨8份、粉煤灰7份、聚乙二醇5份、聚乙烯醇7份和海藻酸钙凝胶8份。
将上述原料加入占原料总重70%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为28h;球磨后进行过筛,过筛目数为200目;再保持进口温度为260℃,出口温度为200℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经挤制成型制成素坯,然后在氮气气氛下以3~5℃/min的升温速率升温至400℃并保温1h,接着以2~3℃/min的升温速率升温至1550℃并保温2.5h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为62%。
实施例7
一种多孔陶瓷的制备方法,所述方法包括步骤如下:
按重量份计,取多孔陶瓷原料:氮化硅70份、铝粉15份、氧化铝25份、硅藻土15份、石墨10份、粉煤灰8份、聚乙二醇8份、聚乙烯醇10份和海藻酸钙凝胶6份。
将上述原料加入占原料总重65%的去离子水中,经超声分散均匀,得到陶瓷预混料。
将上述预混料以无水乙醇为介质进行球磨,球磨时间为28h;球磨后进行过筛,过筛目数为150目;再保持进口温度为260℃,出口温度为220℃进行喷雾造粒,得到陶瓷粉料。
将上述粉料经挤制成型制成素坯,然后在氮气气氛下以3~5℃/min的升温速率升温至400℃并保温0.5h,接着以2~3℃/min的升温速率升温至1550℃并保温2.5h,最终得到所述多孔陶瓷。
测得该多孔陶瓷的显气孔率为66%。
将上述实施例进行污水处理试验,结果如下:
实施例 COD BOD SS 氨氮 色度
污水 578 422 198 212 85
1 36 15 11 13 32
2 28 14 14 10 28
3 25 12 12 7 26
4 22 12 10 8 26
5 23 11 9 4 25
6 22 10 7 3 20
7 20 10 5 2 20
应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。

Claims (10)

1.一种多孔陶瓷的制备方法,其特征在于,所述方法包括步骤如下:按重量份计,取多孔陶瓷原料:氮化硅60~80份、铝粉10~20份、氧化铝15~30份、硅藻土10~20份、石墨5~10份、粉煤灰3~8份、聚乙二醇4~8份、聚乙烯醇5~10份和海藻酸钙凝胶5~10份;将所述原料依次经过混合均匀,球磨,过筛,喷雾造粒,压制成坯和烧结成型步骤,得到所述多孔陶瓷。
2.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述混合均匀步骤包括将所述原料加入占原料总重55%~80%的去离子水中,经超声分散均匀,得到陶瓷预混料。
3.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述球磨步骤的球磨介质为无水乙醇,球磨时间为24~36 h。
4.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述过筛步骤中过筛目数为150~200 目。
5.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述喷雾造粒步骤的进口温度为250~300 ℃,出口温度为200~220℃。
6.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述压制成坯步骤为挤制成型、干压成型或流延成型。
7.根据权利要求1所述的一种多孔陶瓷的制备方法,其特征在于,所述烧结成型步骤为:在保护气氛下,以3~5 ℃/min的升温速率升温至300~600℃并保温0.5~1h,接着以2~3℃/min的升温速率升温至1500~1600 ℃并保温2~3 h。
8.根据权利要求7所述的一种多孔陶瓷的制备方法,其特征在于,所述保护气氛为氮气气氛、氦气气氛或其混合气氛。
9.权利要求1~8任意一项所述制备方法制得的多孔陶瓷。
10.权利要求9所述的一种多孔陶瓷在净化污水中的应用。
CN202011577664.6A 2020-12-28 2020-12-28 一种净化水用多孔陶瓷及其制备方法和应用 Pending CN112645730A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011577664.6A CN112645730A (zh) 2020-12-28 2020-12-28 一种净化水用多孔陶瓷及其制备方法和应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011577664.6A CN112645730A (zh) 2020-12-28 2020-12-28 一种净化水用多孔陶瓷及其制备方法和应用

Publications (1)

Publication Number Publication Date
CN112645730A true CN112645730A (zh) 2021-04-13

Family

ID=75363377

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011577664.6A Pending CN112645730A (zh) 2020-12-28 2020-12-28 一种净化水用多孔陶瓷及其制备方法和应用

Country Status (1)

Country Link
CN (1) CN112645730A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116120088A (zh) * 2022-12-30 2023-05-16 湖南石友水暖洁具有限公司 一种多孔氧化铝陶瓷的制备方法
CN116120088B (zh) * 2022-12-30 2024-05-28 湖南石友水暖洁具有限公司 一种多孔氧化铝陶瓷的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT85504A (fr) * 1986-08-07 1987-09-01 Desmarquest Ceramiques Tech Procede de fabrication de moules en nitrure de silicium poreux pour coulee sous pression
CN105967725A (zh) * 2016-05-06 2016-09-28 陈昌 一种泡沫型多孔陶瓷材料及其制备方法
CN107324833A (zh) * 2016-04-28 2017-11-07 中国科学院上海硅酸盐研究所 一种多孔氮化硅陶瓷材料的制备方法
CN107963907A (zh) * 2017-11-21 2018-04-27 浙江师范大学 一种污水处理用烧结多孔陶瓷片及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT85504A (fr) * 1986-08-07 1987-09-01 Desmarquest Ceramiques Tech Procede de fabrication de moules en nitrure de silicium poreux pour coulee sous pression
CN107324833A (zh) * 2016-04-28 2017-11-07 中国科学院上海硅酸盐研究所 一种多孔氮化硅陶瓷材料的制备方法
CN105967725A (zh) * 2016-05-06 2016-09-28 陈昌 一种泡沫型多孔陶瓷材料及其制备方法
CN107963907A (zh) * 2017-11-21 2018-04-27 浙江师范大学 一种污水处理用烧结多孔陶瓷片及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116120088A (zh) * 2022-12-30 2023-05-16 湖南石友水暖洁具有限公司 一种多孔氧化铝陶瓷的制备方法
CN116120088B (zh) * 2022-12-30 2024-05-28 湖南石友水暖洁具有限公司 一种多孔氧化铝陶瓷的制备方法

Similar Documents

Publication Publication Date Title
CN112608130B (zh) 一种新型轻质高孔隙率陶瓷滤料及其制备方法
CN112316913A (zh) 一种以赤泥废渣为原料的水处理吸附剂及其制备方法
CN103496946A (zh) 一种从水中滤除铬的陶粒滤料及其制备方法
CN109678249A (zh) 一种生态浮岛除磷复合基质及其制备方法
CN113929220A (zh) 基于限域增氧技术的介孔量子光催化材料协同生物菌的复合材料制备方法
CN111410547A (zh) 一种固废基陶瓷催化膜及其制备方法和应用
CN106064962A (zh) 利用污泥和粉煤灰制备催化粒子电极的方法及应用
CN108440013A (zh) 一种曝气生物滤池用陶粒滤料及其制备方法
CN113044963A (zh) 一种活性生物滤料及其制备方法和应用
CN106631113A (zh) 一种轻质多孔生物陶粒及其制备方法和应用
CN114315293B (zh) 一种脱氮除磷免烧陶粒及其制备方法和应用
CN103693758B (zh) 一种处理亚甲基蓝染料废水的方法
CN112316743B (zh) 一种低成本低密度催化功能性陶瓷膜的制备方法
CN112645730A (zh) 一种净化水用多孔陶瓷及其制备方法和应用
CN113663724B (zh) 一种铂基水处理单原子催化剂及其制备方法
CN110734114A (zh) 电催化氧化填料及其制备方法、三维电催化氧化装置
KR101492833B1 (ko) 하수 슬러지를 이용한 오폐수 정화용 담체 및 이의 제조방법
CN112718001B (zh) 纳米纤维素基气凝胶复合光催化剂及其应用
CN113318601B (zh) 一种具有抑菌功能陶瓷膜的制备方法
CN211198891U (zh) 甲基嘧啶磷废水的连续化预处理系统
CN109912295B (zh) 硅酸盐基生物滤料及其制备方法与应用
CN110624496B (zh) 一种用于有机废水净化的多孔氮化硼基复合材料的制备方法
CN113105033A (zh) 一种生物磁化的水产养殖滤材专用材料的制备方法
CN107602092B (zh) 一种多孔纳米陶瓷材料的制备方法
CN110681215B (zh) 一种具有水质净化功能的光催化复合过滤片及其制备方法

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: 20210413

RJ01 Rejection of invention patent application after publication