一区二区三区亚洲视频,亚洲国产精品久久婷婷,一本久道久久综合中文字幕,一区二区三区在线看,羞羞动漫免费看网站,真实国产乱人伦在线视频播放

煤炭化驗設備-揮發坩堝蓋上的灰白色物質是?

2017-03-08  來自: 鶴壁市華維科力煤質儀器有限公司 瀏覽次數:2085

坩堝蓋上的灰白色物質是因煤樣氧化而生成的,它會使揮發分測定偏高。這種氧化現象主要是由于坩堝蓋子不嚴,空氣浸入坩堝內而引起的。對于煙煤,特別是高揮發分煤并不嚴重,因為大量揮發分往外逸出會阻止空氣侵人,但對于焦炭和無煙煤等低揮發岃物質,氧化作用可能嚴重一些,此時可以在煤樣中加入幾滴揮發性液體(如苯等,,加熱時揮發性液體揮發并往坩堝外逸出從而阻止空氣侵入。


產品展示

相關資訊 更多>>

鶴壁市華維科力煤質儀器有限公司

電 話:0392-2666217 手 機:13849235666

郵 編:458030

地 址:河南省鶴壁市山城區奔流街西段20號

CopyRight ? 版權所有: 鶴壁市華維科力煤質儀器有限公司 網站地圖 XML 備案號:豫ICP備09000731號

本站關鍵字: 煤炭化驗設備,煤炭分析儀,量熱儀量熱儀 量熱儀,微機量熱儀 測硫儀,微機全自動測硫儀 微機全自動工業分析儀


華維科力煤質儀器

豫公網安備 41060302000014號

在線客服
主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |