CAJ | 학술논문

为提高煤泥絮凝沉降效果,改善加压过滤机来料特性,通过分析平朔二号井选煤厂入选原煤煤种及粒度组成,研究了不同药剂及药剂浓度、添加位置、添加量对浓缩机煤泥水沉降效果的影响.结果表明,二次添加药剂量0. 8 mL的煤泥水沉降效果基本类似于一次添加1. 0 mL的效果,二次添加药剂能使煤泥絮团再次发生作用,加速沉降,避免了澄清水二次污染,同时总药耗量减少. 絮凝剂与煤泥混合时间越短,煤泥水沉降效果越好,晃动10次的煤泥水沉降效果明显好于20次和40次,说明过度搅拌会导致煤泥已形成的絮团发生解离,造成煤泥水沉降速度降低. 保护箱和走桥分别给药效果明显,入选末煤时,采用多点加药方式,煤泥水絮凝沉降效果优于块煤入选,浓缩机澄清水浓度降低,系统煤泥循环量减少.
위제고매니서응침강효과,개선가압과려궤래료특성,통과분석평삭이호정선매엄입선원매매충급립도조성,연구료불동약제급약제농도、첨가위치、첨가량대농축궤매니수침강효과적영향.결과표명,이차첨가약제량0. 8 mL적매니수침강효과기본유사우일차첨가1. 0 mL적효과,이차첨가약제능사매니서단재차발생작용,가속침강,피면료징청수이차오염,동시총약모량감소. 서응제여매니혼합시간월단,매니수침강효과월호,황동10차적매니수침강효과명현호우20차화40차,설명과도교반회도치매니이형성적서단발생해리,조성매니수침강속도강저. 보호상화주교분별급약효과명현,입선말매시,채용다점가약방식,매니수서응침강효과우우괴매입선,농축궤징청수농도강저,계통매니순배량감소.
To increase flocculation efficiency of slime and improve supplied materials characteristics from pressured filter,based on the a-nalysis of raw coal types and size composition,the influence of reagent,reagent concentration,dosing position,dosage on slime water setting efficiency was investigated. Adding 0. 8 mL reagent at twice had similar effect of adding 1. 0 mL reagent at a time. The second dosage made the slime floc aggregate again,the bigger floc sank quickly. Secondary dosage avoided the pollution of clear water and reduced total rea-gent consumption. The shorter the mixing time between slime and flocculant,the better the setting effect. Over-mixing would decrease the setting velocity. The setting effect was better when the reagent was added separately at protection box and bridge. Adding reagent in multi-ple locations improved setting efficiency and decreased circulating content of slime.