CN104291833A - 一种用煤气烧结永磁铁氧体磁体的方法 - Google Patents

一种用煤气烧结永磁铁氧体磁体的方法 Download PDF

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CN104291833A
CN104291833A CN201410477362.XA CN201410477362A CN104291833A CN 104291833 A CN104291833 A CN 104291833A CN 201410477362 A CN201410477362 A CN 201410477362A CN 104291833 A CN104291833 A CN 104291833A
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coal gas
temperature
gradually
warming
ferrite magnet
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CN104291833B (zh
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卢杨成
赵国法
卢文华
卢晓梅
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ZHEJIANG KAIVEN MAGNET CO Ltd
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    • 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
    • C04B35/64—Burning or sintering processes
    • 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
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C04B2235/3274—Ferrites
    • 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
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
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Abstract

本发明提供了一种用煤气烧结永磁铁氧体磁体的方法，在隧道窑中设置若干条孔道，孔道内设置轨道，轨道上设置推板，待烧结产品装载于推板上，在轨道上推进，采用低硫煤在煤气炉中燃烧，产生煤气，将煤气通入隧道窑，在孔道外的窑腔内燃烧，通过辐射热烧结产品。本发明能耗低，产量高，污染少，产品质量好。

Description

一种用煤气烧结永磁铁氧体磁体的方法
技术领域
本发明属于永磁铁氧体领域，具体是一种用煤气烧结永磁铁氧体磁体的方法。      
背景技术
目前烧结永磁铁氧体磁体都是采用电窑或者燃煤直接烧结，电窑烧结耗电高，成本太高，燃煤直接烧结得到的产品磁性能不够好，而且烟尘大，污染严重。
 
发明内容
为了解决上述技术问题，本发明提供了一种用煤气烧结永磁铁氧体磁体的方法。
一种用煤气烧结永磁铁氧体磁体的方法，其特征在于在隧道窑中设置若干条孔道，孔道内设置轨道，轨道上设置推板，待烧结产品装载于推板上，在轨道上推进，采用低硫煤在煤气炉中燃烧，产生煤气，将煤气通入隧道窑，在孔道外的窑腔内燃烧，通过辐射热烧结产品。
所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于所述孔道有8条，孔道长度为30m。
所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于所述推板在轨道上的推进速度为0.5—0.75m/min。
所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于窑腔内的温度可调，窑腔内沿着孔道长度方向的不同位置的温度不同，其中1—5m，温度从室温逐渐升温至250℃；5—10m，温度从250℃逐渐升温至600℃；10—13m，温度从600℃逐渐升温至950℃；13—19m，温度从950℃逐渐升温至1250℃；19—23m，温度从1250℃逐渐降温至800℃；23—27m，温度从800℃逐渐降温至300℃；27—30m，温度从300℃逐渐降温至室温。
本发明的一种用煤气烧结永磁铁氧体磁体的方法，能耗低，产量高，污染少，产品质量好。
 
具体实施方式
在隧道窑中设置8条长度为30m的孔道，孔道内设置轨道，轨道上设置推板，待烧结产品装载于推板上，在轨道上推进，推板在轨道上的推进速度为0.5—0.75m/min，采用低硫煤在煤气炉中燃烧，产生煤气，将煤气通入隧道窑，在孔道外的窑腔内燃烧，通过辐射热烧结产品。窑腔内的温度沿着孔道长度方向的不同位置的温度不同，其中1—5m，温度从室温逐渐升温至250℃；5—10m，温度从250℃逐渐升温至600℃；10—13m，温度从600℃逐渐升温至950℃；13—19m，温度从950℃逐渐升温至1250℃；19—23m，温度从1250℃逐渐降温至800℃；23—27m，温度从800℃逐渐降温至300℃；27—30m，温度从300℃逐渐降温至室温。
经过测算，采用本发明的方法烧结，比常规电窑烧结降低成本50%，并且产品的磁性能比燃煤直接烧结提高了20%。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均包含在本发明的保护范围之内。

Claims (4)

1.一种用煤气烧结永磁铁氧体磁体的方法，其特征在于在隧道窑中设置若干条孔道，孔道内设置轨道，轨道上设置推板，待烧结产品装载于推板上，在轨道上推进，采用低硫煤在煤气炉中燃烧，产生煤气，将煤气通入隧道窑，在孔道外的窑腔内燃烧，通过辐射热烧结产品。
2.如权利要求1所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于所述孔道有8条，孔道长度为30m。
3.如权利要求2所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于所述推板在轨道上的推进速度为0.5—0.75m/min。
4.如权利要求3所述的一种用煤气烧结永磁铁氧体磁体的方法，其特征在于窑腔内的温度可调，窑腔内沿着孔道长度方向的不同位置的温度不同，其中1—5m，温度从室温逐渐升温至250℃；5—10m，温度从250℃逐渐升温至600℃；10—13m，温度从600℃逐渐升温至950℃；13—19m，温度从950℃逐渐升温至1250℃；19—23m，温度从1250℃逐渐降温至800℃；23—27m，温度从800℃逐渐降温至300℃；27—30m，温度从300℃逐渐降温至室温。
CN201410477362.XA 2014-09-18 2014-09-18 一种用煤气烧结永磁铁氧体磁体的方法 Active CN104291833B (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109836176A (zh) * 2018-12-25 2019-06-04 安徽中马磁能科技股份有限公司 一种永磁铁氧体磁瓦的除锈工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101560108A (zh) * 2009-05-18 2009-10-21 浙江凯文磁钢有限公司 煤窑烧结高性能永磁铁氧体材料的方法
CN102815933A (zh) * 2012-09-10 2012-12-12 浙江省东阳市中航磁性有限公司 一种永磁钡铁氧体材料及其制备方法
CN103292595A (zh) * 2013-06-13 2013-09-11 浙江凯文磁钢有限公司 一种烧结高性能永磁铁氧体产品的装置和方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101560108A (zh) * 2009-05-18 2009-10-21 浙江凯文磁钢有限公司 煤窑烧结高性能永磁铁氧体材料的方法
CN102815933A (zh) * 2012-09-10 2012-12-12 浙江省东阳市中航磁性有限公司 一种永磁钡铁氧体材料及其制备方法
CN103292595A (zh) * 2013-06-13 2013-09-11 浙江凯文磁钢有限公司 一种烧结高性能永磁铁氧体产品的装置和方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109836176A (zh) * 2018-12-25 2019-06-04 安徽中马磁能科技股份有限公司 一种永磁铁氧体磁瓦的除锈工艺
CN109836176B (zh) * 2018-12-25 2021-11-09 安徽中马磁能科技股份有限公司 一种永磁铁氧体磁瓦的除锈工艺

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