粮食与油脂
糧食與油脂
양식여유지
CEREALS & OILS
2014年
3期
50-53
,共4页
郑彦芳%魏安池%赵凯艳%宋海东
鄭彥芳%魏安池%趙凱豔%宋海東
정언방%위안지%조개염%송해동
脱色废白土%焙烧-酸化法%再生%脱色率
脫色廢白土%焙燒-痠化法%再生%脫色率
탈색폐백토%배소-산화법%재생%탈색솔
spent bleaching clay%calcine-acidification%regeneration%bleaching efficiency
采用焙烧-酸化法对废白土进行再生，对焙烧温度以及酸化的工艺条件进行了探索。结果表明：废白土再生的最佳焙烧温度为500℃，响应面优化确定了酸化的工艺条件：硫酸体积分数为6.70%，酸化温度为55℃，液固比为3.2∶1，酸化时间为60 min，且在该条件下所得再生白土的脱色率为94.82%。
採用焙燒-痠化法對廢白土進行再生，對焙燒溫度以及痠化的工藝條件進行瞭探索。結果錶明：廢白土再生的最佳焙燒溫度為500℃，響應麵優化確定瞭痠化的工藝條件：硫痠體積分數為6.70%，痠化溫度為55℃，液固比為3.2∶1，痠化時間為60 min，且在該條件下所得再生白土的脫色率為94.82%。
채용배소-산화법대폐백토진행재생，대배소온도이급산화적공예조건진행료탐색。결과표명：폐백토재생적최가배소온도위500℃，향응면우화학정료산화적공예조건：류산체적분수위6.70%，산화온도위55℃，액고비위3.2∶1，산화시간위60 min，차재해조건하소득재생백토적탈색솔위94.82%。
Experiments were performed on the regeneration of spent bleaching clay using the method of calcine-acidification. The calcination temperature and acid activation conditions were investigated. Results showed that the optimum calcination temperature was 500 ℃. The response surface methodology determined the optimum conditions were as follows:sulfuric acid volume fraction 6.70%;acidification temperature 55 ℃;liquid-solid ratio 3.2∶1;acidification time 60min. Under these conditions,the bleaching efficiency of the regenerated clay was 94.82%.
