叶佳辉 宋鹏飞 周佳乐 琚童心 刘储蓄 王超

摘要：本著节能、降耗、提效的目的，本研究提出了一种深锥导流式多级沉降无耙浓缩装置，主要包括混合入料装置、精煤富集回收装置，多级导流沉降装置，浓缩池等，本装置的设计实现了传统多段浓缩池在结构上的合二为一，大大减少了传统多段浓缩池的占地面积。本装置实际工作过程中煤泥水经过混合入料装置，通过引射作用吸入絮凝剂，实现药剂添加。混合物料从中心槽体的上方向中心槽体的中部流动，然后通过分散导流板向四周扩散，煤泥聚团沉降后到达沉淀层，上清层中反应后的残余矿化气泡和细煤泥从中心槽体的内侧壁向上运动到精煤富集回收装置中，精煤富集回收装置从外向内依次设置有边缘进料区、灭泡区，物料的残余矿化气泡经过灭泡区进行锤击灭泡，精煤得到有效回收，尾煤泥进入到多级导流沉降装置，经过多级干扰沉降后，细煤泥得到充分沉降，达标后的溢流水经浓缩池边上的溢流槽流出，进入系统循环。本装置实现了残余精煤的回收，增加了经济效益，同时通过多级干扰沉降实现细泥的充分沉降分离，极大改善循环水造成的洗选工艺恶化现象，达到了节能减排及提效的目的，具有较大的推广和应用价值。

关键词：导流式 多级沉降 无耙浓缩 锤击灭泡 精煤回收

Abstract：In order to save energy， reduce consumption and improve efficiency， a deep cone diversion multistage sedimentation rake free concentration device is proposed in this study， which mainly includes mixing feeding device， clean coal enrichment and recovery device， multistage diversion sedimentation device， concentration tank， etc. the design of this device realizes the structural integration of the traditional multistage concentration tank and greatly reduces the floor area of the traditional multistage concentration tank. In the actual working process of the device， the coal slurry water passes through the mixing feeding device and inhales the flocculant through the injection action to realize the addition of reagent. The mixed material flows from the upper part of the central tank to the middle part of the central tank， and then diffuses around through the dispersion deflector. The coal slime agglomerates and settles and reaches the sedimentation layer. The residual mineralized bubbles and fine coal slime after reaction in the supernatant move upward from the inner wall of the central tank to the clean coal enrichment and recovery unit. The clean coal enrichment and recovery unit is successively provided with edge feed areas from the outside to the inside In the defoaming area， the residual mineralized bubbles of the material are hammered and defoaming through the defoaming area， the clean coal is effectively recovered， the tail slime enters the multi-stage diversion sedimentation device， the fine slime is fully settled after multi-stage interference sedimentation， and the overflow water after reaching the standard flows out through the overflow tank beside the concentration tank and enters the system circulation. The device realizes the recovery of residual clean coal and increases economic benefits. At the same time， it realizes the full settlement and separation of fine mud through multi-stage interference settlement， greatly improves the deterioration of washing process caused by circulating water， achieves the purpose of energy conservation， emission reduction and efficiency improvement， and has great popularization and application value.

Keywords： diversion type， multistage sedimentation， rake free concentration， hammer defoaming， clean coal recovery

前言

目前，我国在煤泥水处理领域存在很多环节需要优化及改进，如一些洗煤……