CN1872767A - 一种粉煤灰脱色方法 - Google Patents

一种粉煤灰脱色方法 Download PDF

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Publication number
CN1872767A
CN1872767A CNA2006100468981A CN200610046898A CN1872767A CN 1872767 A CN1872767 A CN 1872767A CN A2006100468981 A CNA2006100468981 A CN A2006100468981A CN 200610046898 A CN200610046898 A CN 200610046898A CN 1872767 A CN1872767 A CN 1872767A
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China
Prior art keywords
water
flyash
boiling
fly ashes
fly ash
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于晓东
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Shenyang Jianzhu University
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Shenyang Jianzhu University
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Priority to CNA2006100468981A priority Critical patent/CN1872767A/zh
Publication of CN1872767A publication Critical patent/CN1872767A/zh
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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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

一种粉煤灰脱色方法，涉及一种建筑材料的加工方法，其制作过程为：先将含碳量在0.1％～1％的一级粉煤灰完全浸泡在水中，将水加热到沸腾；再将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触5～15分钟。其中CO2为工业级CO2。本发明以CO2为主要原料，其生产工艺简单，无需高温等特殊条件即可使粉煤灰脱色并增加粉煤灰的白度。

Description

一种粉煤灰脱色方法
技术领域
本发明涉及一种建筑材料的加工方法，特别是涉及一种粉煤灰的脱色方法。
背景技术
粉煤灰是一种积蓄量和年产量都非常大的工业灰渣，它的堆放严重占用耕地和污染环境。同时它具有较小细度、粒径均匀并具有火山灰活性。从以上物理性能看它是一种很好的建筑涂料的填料。但它的颜色为灰色，白度很低，不适合作为建筑涂料的填料。
发明内容
本发明的目的在于克服粉煤灰白度低的缺点，通过试验改进，提供一种以CO2为主要原料，使粉煤灰脱色并增加粉煤灰的白度的方法。
本发明的目的是通过以下技术方案实现的：
一种粉煤灰脱色方法，其制作过程为：先将含碳量在0.1％～1％的粉煤灰完全浸泡在水中，将水加热到沸腾；再将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触5～15分钟。
如上所述的CO2为工业级CO2。
本发明的优点与效果是：
本发明以CO2为主要原料，其生产工艺简单，无需高温等特殊条件即可实施。
具体实施方式
实施例1
将含碳量在1％的一级粉煤灰完全浸泡在水中，将水加热到沸腾。将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触5分钟，粉煤灰的白度可提高到70。
实施例2
将含碳量在0.1％的一级粉煤灰完全浸泡在水中，将水加热到沸腾。将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触5分钟，粉煤灰的白度可提高到79。
实施例3
将含碳量在0.1％的一级粉煤灰完全浸泡在水中，将水加热到沸腾将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触15分钟，粉煤灰的白度可提高到81。

Claims (2)

1.一种粉煤灰脱色方法，其特征在于其制作过程为：先将含碳量在0.1％～1％的粉煤灰完全浸泡在水中，将水加热到沸腾；再将CO2气体加热到200℃，通入浸泡有粉煤灰的沸水中，使水中的粉煤灰与CO2充分接触5～15分钟。
2.根据权利要求1所述的一种粉煤灰脱色方法，其特征在于所述的CO2为工业级CO2。
CNA2006100468981A 2006-06-15 2006-06-15 一种粉煤灰脱色方法 Pending CN1872767A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2006100468981A CN1872767A (zh) 2006-06-15 2006-06-15 一种粉煤灰脱色方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006100468981A CN1872767A (zh) 2006-06-15 2006-06-15 一种粉煤灰脱色方法

Publications (1)

Publication Number Publication Date
CN1872767A true CN1872767A (zh) 2006-12-06

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Family Applications (1)

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CNA2006100468981A Pending CN1872767A (zh) 2006-06-15 2006-06-15 一种粉煤灰脱色方法

Country Status (1)

Country Link
CN (1) CN1872767A (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105419406A (zh) * 2015-12-19 2016-03-23 华南理工大学 一种提高粉煤灰白度的改性方法
CN113880472A (zh) * 2021-11-08 2022-01-04 白吉元 一种高性能新型白水泥的制备方法
CN114031969A (zh) * 2021-11-08 2022-02-11 白吉元 一种以粉煤灰为原材料生产腻子粉的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105419406A (zh) * 2015-12-19 2016-03-23 华南理工大学 一种提高粉煤灰白度的改性方法
CN113880472A (zh) * 2021-11-08 2022-01-04 白吉元 一种高性能新型白水泥的制备方法
CN114031969A (zh) * 2021-11-08 2022-02-11 白吉元 一种以粉煤灰为原材料生产腻子粉的方法

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