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首页> 外文会议>16th Annual technical conference and exposition of the American Filtration and Separations Society >New Decanter Centrifuge Technology for Improved Separation and High Throughput
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New Decanter Centrifuge Technology for Improved Separation and High Throughput

机译：新型Decanter离心机技术可改善分离度和高通量

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摘要

An innovative SuperC? technology* has been developed to improve clarification andrnseparation of decanter typed centrifuge, which includes solid-bowl and screen-bowl centrifuges.rnFor separation and clarification the new technology has demonstrated to increase substantially thernsolids recovery, or reduce solids in effluent, at given operating centrifugal gravity level, pool setting,rndifferential speed, and feed rate. The new technology is especially advantageous for “difficult-to-separate”rnapplications such as for feed slurry with (a) fine particles less than 10 microns, (b) small density differencernbetween suspending solids and liquid phase as found in organic and biological solids suspended in aqueousrnphase, or ? suspension with high viscosity. For the same solids recovery (or centrate solids), the SuperC?rntechnology can increase throughput to the decanter typed machine provided the latter is not mechanicallyrnlimited by the motor- and conveyor-drive capacity. When coagulant and/or flocculant are used less dosagernis consumed as the technology provides superior separation compared with conventional decanter.rnThe technology is also attractive for screen-bowl centrifuge when employed in separating highraternmineral slurries in which higher concentration of unsettled solids in the effluent is the limiting factorrndue to low speed/centrifugal gravity G and a short cylindrical clarifier providing minimal residence time forrnthe feed.rnThe new technology can be applied to wet classification of slurry with micron-sized feed resultingrnin much finer particles in the product effluent at the same size recovery or yield. The latter findsrnapplications in classification of kaolin, calcium carbonate, silica, mica, and other fine-particle slurries.rnThe SuperC? technology can be used alone, or in partnership with the patented XL·PLUS? feedrnacceleration system wherein feed is instantly accelerated to speed when it is introduced to the separationrnpool of the centrifuge. Both technologies, when combined, can further improve separation and increasernthroughput to the centrifuge. Some examples are used to illustrate both separation and classification of fineparticlernslurry.rnThe SuperCTM and XL·PLUS? technologies can be used to retrofit almost all existing installedrndecanter typed centrifuges, or implemented in new centrifuges, to improve throughput and separation. Itrnhas no effect on cake dryness except when finer particles get settled in the cake and the additional moisturernwith which they carry cannot be removed in the conical beach of solid-bowl decanter, or in the screen deckrnof screen-bowl centrifuge.
机译：创新的SuperC？已经开发了一项技术*以改善倾析式离心机（包括固体碗离心机和筛碗式离心机）的澄清度和分离度。对于分离和澄清度，新技术已证明在给定的工作离心力下可以显着提高固体回收率或减少废水中的固体含量重力水平，池设置，差速和进给速度。这项新技术特别适用于“难于分离”的应用，例如具有（a）小于10微米的细颗粒，（b）悬浮固体和液相之间的密度差很小的饲料浆，如在悬浮的有机和生物固体中发现的那样在水相中，或高粘度悬浮液。对于相同的固体回收率（或离心固体含量），SuperCorn技术可以提高to析机类型的机器的产量，前提是machine析机类型的机械不受电动机和输送机驱动能力的限制。当使用混凝剂和/或絮凝剂时，与传统的de析器相比，该技术可提供更好的分离效果，因此消耗的剂量更少。该技术在筛分碗式离心机中也很有吸引力，因为它用于分离高级矿物浆液，其中废水中未沉降固体的浓度较高。由于低速/离心重力G和较短的圆柱澄清池提供了最小的停留时间，因此限制了该因素。该新技术可用于对具有微米级进料的浆液进行湿法分级，从而在相同尺寸回收率的情况下在产品流出物中产生更细的颗粒或产量。后者在高岭土，碳酸钙，二氧化硅，云母和其他细颗粒浆料的分类中有应用。技术可以单独使用，还是与获得专利的XL·PLUS合作使用？进料加速系统，其中当进料被引入离心机的分离池时，其立即加速到一定速度。结合使用这两种技术，可以进一步改善分离效果并提高离心机的通量。举例说明了微粒浆的分离和分类。SuperCTM和XL·PLUS？这些技术可用于改造几乎所有已安装的卧螺离心机，或在新的离心机中实施，以提高通量和分离度。它对滤饼的干燥没有影响，除非细颗粒沉淀在滤饼中，并且它们携带的额外水分无法在固体碗式de水器的锥形杯中或在筛板式筛碗离心机中除去。

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