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活性炭強(qiáng)度的檢測方法
瀏覽次數(shù):38發(fā)布日期:2025-09-02

煤炭活性炭強(qiáng)度的檢測方法

活性炭強(qiáng)度的測試主要依據(jù)國家標(biāo)準(zhǔn),采用耐磨強(qiáng)度測定法(轉(zhuǎn)鼓法),具體流程如下:

?一、標(biāo)準(zhǔn)測試流程?

  1. ?試樣制備?

    • 取約200g活性炭試樣,置于105℃電熱干燥箱中烘干2小時(shí),冷卻備用?1。

    • 用量筒取50mL過篩試樣,稱重記錄初始質(zhì)量(m0m0?。

  2. ?轉(zhuǎn)鼓摩擦測試?

    • 將試樣放入帶有5個(gè)鋼球(直徑14.3mm)的滾筒中,固定滾筒蓋?

    • 將滾筒置于強(qiáng)度測定儀轉(zhuǎn)軸,以規(guī)定轉(zhuǎn)速運(yùn)轉(zhuǎn)5分鐘?

 

  1. ?篩分與稱量?

    • 取出試樣,轉(zhuǎn)移至標(biāo)準(zhǔn)篩網(wǎng)(如1mm篩)中,用振篩機(jī)篩分5分鐘?。

    • 收集篩上完整顆粒(未破碎部分)并稱重(m1m1?。

  2. ?強(qiáng)度計(jì)算?

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耐磨強(qiáng)度 (%) = (m_1 / m_0) × 100 

    • 強(qiáng)度值≥95%為高強(qiáng)活性炭(水處理推薦標(biāo)準(zhǔn))?。



二、國際方法對(duì)比?

  • ?中國/東歐標(biāo)準(zhǔn)?:采用鋼球滾筒碰撞法(如上述流程)?

  • ?美國標(biāo)準(zhǔn)(ASTM)?:使用橢圓形球盤替代滾筒,鋼球與球盤摩擦碰撞試樣,篩分后計(jì)算碎屑比例?。



?三、國標(biāo)體系依據(jù)?

活性炭強(qiáng)度測試遵循國家標(biāo)準(zhǔn):

  • ?煤質(zhì)活性炭?:依據(jù) ?GB/T 7702-2023?(替代1997/2008版)?。

  • ?木質(zhì)活性炭?:依據(jù) ?GB/T 12496-2015?(替代1999版)?。



關(guān)鍵注意事項(xiàng)

  1. 鋼球數(shù)量(5個(gè))、直徑(14.3mm)及轉(zhuǎn)速需嚴(yán)格符合國標(biāo)?。

  2. 篩網(wǎng)目數(shù)根據(jù)活性炭用途選擇(如氣相吸附常用1mm篩)?。

  3. 強(qiáng)度結(jié)果受黏結(jié)劑類型影響(如羧甲基淀粉黏結(jié)劑強(qiáng)度更高)?。

通過上述標(biāo)準(zhǔn)化流程,可確?;钚蕴吭谶^濾、吸附等場景的機(jī)械耐久性。

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