灰熔點的特征
發布時間：2022-10-11 點(dian)擊次數：327次灰分熔(rong)點是固體燃料中(zhong)的灰分，達到一定溫度(du)以后，發(fa)生變形(xing)，軟化(hua)和(he)熔(rong)融時的溫度(du)，它(ta)與原料中(zhong)灰分組成有關(guan)，灰分中(zhong)三氧(yang)化(hua)二鋁、二氧(yang)化(hua)硅含量高，灰熔(rong)點高。
三氧化(hua)(hua)(hua)(hua)二鐵(tie)、氧化(hua)(hua)(hua)(hua)鈣、氧化(hua)(hua)(hua)(hua)鎂(mei)、氧化(hua)(hua)(hua)(hua)鈉和氧化(hua)(hua)(hua)(hua)鉀含(han)量越高，灰熔(rong)(rong)點(dian)(dian)越低(di)。灰分(fen)(fen)屬于無機混(hun)合物，其成(cheng)分(fen)(fen)影響(xiang)它的(de)熔(rong)(rong)點(dian)(dian)。接近熔(rong)(rong)點(dian)(dian)時開始變形、軟(ruan)化(hua)(hua)(hua)(hua)；達到熔(rong)(rong)點(dian)(dian)后開始熔(rong)(rong)化(hua)(hua)(hua)(hua)，灰分(fen)(fen)呈(cheng)熔(rong)(rong)融狀態，作液體狀態流動。
四個特征：
1變(bian)形(xing)溫(wen)度-灰(hui)錐尖端或棱開始變(bian)圓或彎曲的(de)時候的(de)溫(wen)度；
2軟化溫度-灰錐(zhui)(zhui)彎曲至錐(zhui)(zhui)類處(chu)級托板或灰錐(zhui)(zhui)變(bian)成球星時的溫度；
3半球溫(wen)度-灰錐形變(bian)成半球時(shi)，即告約等(deng)于底長的一半時(shi)的溫(wen)度；
4流動(dong)溫度(du)-灰(hui)錐融(rong)化展開成高度(du)在1.5mm以下薄層是的溫度(du)。
