n. 去灰；脫灰作用
v. 除灰（deash的現在分詞）
The FTIR spectrum shows the ZJ coal's structure changes before and after deashing and swelling;
FTIR光譜表征了ZJ煤去灰前後和溶脹處理效果的結構變化；
Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used.
經采用低頻聲波清灰裝置，減少了檢修和維護的費用。
The results showed that HF acid has remarkable deashing capacity for coal and graphite with high Si and low Ca content.
結果表明，HF酸對高矽低鈣含量的煤和石墨有顯著的脫灰效果；
A new method of deashing was provided to solve the difficulty of flotation deashing by some special kind of reagent changing the surface nature of Zhungeer coal.
主要針對準格爾煤浮選降灰的難度，提出某種藥劑改變準格爾煤表面性質，從而降低灰分的方法。
As a new development of mild coal cleaning, the desulfurization and deashing of coal by electrochemical oxidation of coal water slurry has received an increasing great interest abroad.
作為一種煤的溫和化化學淨化，煤的電化學法脫灰脫硫近期在國外引起廣泛關注。
Deashing（脫灰）是指通過物理或化學方法去除物質中灰分或無機礦物質殘留的過程，常見于工業生産和環境工程領域。灰分通常指物質高溫燃燒後殘留的非揮發性成分，例如金屬氧化物、鹽類等。在生物質能源領域，deashing可提升燃料熱值并減少設備腐蝕；在廢水處理中，該技術用于分離重金屬離子及懸浮顆粒。
具體應用場景包括：
該術語的物理原理可表示為灰分去除率公式： $$ eta = frac{C_i - C_f}{C_i} times 100% $$ 其中$C_i$和$C_f$分别代表處理前後的灰分濃度。
“Deashing”是一個工業或化學領域的技術術語，其含義和應用可歸納如下：
如果需要更深入的化學流程或聲波技術原理，可參考相關工業文獻或專業詞典。
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