CN106587967A - 一种堇青石粉的合成工艺 - Google Patents

一种堇青石粉的合成工艺 Download PDF

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CN106587967A
CN106587967A CN201611201519.1A CN201611201519A CN106587967A CN 106587967 A CN106587967 A CN 106587967A CN 201611201519 A CN201611201519 A CN 201611201519A CN 106587967 A CN106587967 A CN 106587967A
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water
equal
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talcum powder
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聂喜庆
张之洪
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Shunde District Of Foshan City Kambara Energy-Saving Materials Co Ltd
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Shunde District Of Foshan City Kambara Energy-Saving Materials Co Ltd
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    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Inorganic Chemistry (AREA)
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  • Compositions Of Oxide Ceramics (AREA)

Abstract

本发明公开了一种堇青石粉的合成工艺，包括以下步骤：首先准备滑石粉和水洗高岭土；接着，将滑石粉和水洗高岭土按照3:7的比例进行混合，并进行水球磨，将两种原料磨碎充分混合；再接着，将混合后的原料放入注浆池进行沉淀，沉淀后将原料抽取到压滤机内进行除水并压成饼状；之后，将饼状材料放入真空练泥机内进行真空练泥形成砖状；然后，将砖状材料放入窑炉进行烧制、烘干，烧制温度为1380℃‑1410℃；最后，通过破碎机将烧制后的砖料碾压破碎形成粉状或颗粒状。本发明采用两种天然材料滑石粉和水洗高岭土制作堇青石粉，无需添加额外的氧化铝原料，因此本发明的生产成本低于传统方式的生产成本。

Description

一种堇青石粉的合成工艺
技术领域
本发明涉及一种陶瓷材料制备领域，具体涉及一种堇青石粉的合成工艺。
背景技术
堇青石（2MgO-2Al2O3-5SiO2）是优良的高温抗热震材料，被广泛用作陶瓷窑棚板、匣钵、电子封装材料、催化剂载体、泡沫陶瓷、生物陶瓷和高温热辐射材料等。由于其较低的热胀系数、较强的抗压能力和良好的耐火性能，故在耐火行业被广泛应用。天然的堇青 石矿储量很少，品位较低，常用的堇青石材料是人工合成的。
目前国内常用的堇青石材料生产工艺是以滑石、粘土等天然原料为主要反应物，加入适量的氧化铝或氧化镁化学原料，混合均匀，经 1390-1400℃烧结，制备了堇青石陶瓷，该方法的优点是反应原料部分采用天然原料，原料来源较广泛；缺点是产品纯度不高，需要在反应原料中引入部分高纯度的MgO、Al2O3和SiO2等化工原料，成本有待进一步降低。
发明内容
为了克服现有技术的不足，本发明提供一种以纯天然材料作为反应物，无需添加化学原料、生产成本低的堇青石粉合成工艺。
本发明解决其技术问题所采用的技术方案是：
一种堇青石粉的合成工艺，包括以下步骤：首先准备滑石粉和水洗高岭土，所述滑石粉内的氧化镁含量大于等于34%，二氧化硅含量大于等于35%，氧化铝含量大于等于17%，其余为杂质；所述水洗高岭土为水洗去除砂质和杂质的高岭土，水洗高岭土的氧化铝含量大于等于38%，二氧化硅含量大于等于62%，其余为杂质；
接着，将滑石粉和水洗高岭土按照3:7的比例进行混合，并进行水球磨，将两种原料磨碎充分混合；
再接着，将混合后的原料放入注浆池进行沉淀，沉淀后将原料抽取到压滤机内进行除水并压成饼状；
之后，将饼状材料放入真空练泥机内进行真空练泥形成砖状；
然后，将砖状材料放入窑炉进行烧制、烘干，烧制温度为1380℃-1410℃；
最后，通过破碎机将烧制后的砖料碾压破碎形成粉状或颗粒状。
本发明的有益效果是：本发明采用两种天然材料滑石粉和水洗高岭土制作堇青石粉，无需添加额外的氧化铝原料，水洗高岭土在市面上直接有销售，销售价格远远低于氧化铝原料的价格，因此本发明的生产成本低于传统方式的生产成本；进一步，采用水洗高岭土原料在烧制时，烧制温度低于传统方式的烧制温度（传统烧制温度为1420℃），降低了能源的消耗，更加环保节能；更近一步，烧制后的堇青石粉的膨胀系数为1.4-1.5，远远低于传统堇青石粉的膨胀系数（传统的膨胀系数为1.6-1.8），制作出来的原料更加稳定。
具体实施方式
本实施例所提供的一种堇青石粉的合成工艺，包括以下步骤：首先准备滑石粉和水洗高岭土，所述滑石粉内的氧化镁含量大于等于34%，二氧化硅含量大于等于35%，氧化铝含量大于等于17%，其余为杂质；所述水洗高岭土为水洗去除砂质和杂质的高岭土，水洗高岭土的氧化铝含量大于等于38%，二氧化硅含量大于等于62%，其余为杂质；
接着，将滑石粉和水洗高岭土按照重量份3:7的比例进行混合，并进行水球磨，将两种原料磨碎充分混合；
再接着，将混合后的原料放入注浆池进行沉淀，沉淀的时间大于等于2小时，沉淀后将原料抽取到压滤机内进行除水并压成饼状；
之后，将饼状材料放入真空练泥机内进行真空练泥形成砖状；
然后，将砖状材料放入窑炉进行烧制、烘干，烧制温度为1380℃-1410℃，时间为8小时以上，其最优的烧制温度为1380℃和1400℃，能耗低，低温烧制的膨胀系数小；
最后，通过破碎机将烧制后的砖料碾压破碎形成粉状或颗粒状。
以上所述仅为本发明的优先实施方式，只要以基本相同手段实现本发明目的的技术方案都属于本发明的保护范围之内。

Claims (1)

1.一种堇青石粉的合成工艺，其特征在于包括以下步骤：首先准备滑石粉和水洗高岭土，所述滑石粉内的氧化镁含量大于等于34%，二氧化硅含量大于等于35%，氧化铝含量大于等于17%，其余为杂质；所述水洗高岭土为水洗去除砂质和杂质的高岭土，水洗高岭土的氧化铝含量大于等于38%，二氧化硅含量大于等于62%，其余为杂质；
接着，将滑石粉和水洗高岭土按照3:7的比例进行混合，并进行水球磨，将两种原料磨碎充分混合；
再接着，将混合后的原料放入注浆池进行沉淀，沉淀后将原料抽取到压滤机内进行除水并压成饼状；
之后，将饼状材料放入真空练泥机内进行真空练泥形成砖状；
然后，将砖状材料放入窑炉进行烧制、烘干，烧制温度为1380℃-1410℃；
最后，通过破碎机将烧制后的砖料碾压破碎形成粉状或颗粒状。
CN201611201519.1A 2016-12-23 2016-12-23 一种堇青石粉的合成工艺 Pending CN106587967A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627021A (zh) * 2019-01-25 2019-04-16 山东铭特陶瓷材料有限公司 堇青石坩埚的制备方法
CN116283213A (zh) * 2022-12-14 2023-06-23 中国科学院合肥物质科学研究院 一种堇青石及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1609034A (zh) * 2004-10-29 2005-04-27 福州大学 用铝型材厂工业污泥合成高纯度堇青石材料的方法

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CN1609034A (zh) * 2004-10-29 2005-04-27 福州大学 用铝型材厂工业污泥合成高纯度堇青石材料的方法

Non-Patent Citations (3)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627021A (zh) * 2019-01-25 2019-04-16 山东铭特陶瓷材料有限公司 堇青石坩埚的制备方法
CN116283213A (zh) * 2022-12-14 2023-06-23 中国科学院合肥物质科学研究院 一种堇青石及其制备方法
CN116283213B (zh) * 2022-12-14 2024-02-20 中国科学院合肥物质科学研究院 一种堇青石及其制备方法

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