«rotary drum»

Material Flow in Rotary Drums

The experimental investigation of material flow in rotary drums is studied. An equipment in the size of pilot-scale was used to collect experimental data for investigation of validity of the conventional steady-state model of material flow in rotary drums. Also, the transient dat

Analysis of Heat Penetration into the Solid Bed of Rotary Drums

The heat penetration into the solid bed of rotary drums was experimentally investigated. An indirect heated rotary drum with a diameter of D=600 mm and a length L=450 mm has been used for this purpose. Temperature profiles of the gas, the drum wall and the solid bed were measured

Organic Matter Transformation during Rotary Drum Composting

Organic matter transformation using chemical and spectroscopic methods was studied for composting of four carbon/nitrogen (C/N) ratio waste combinations (C/N 16, C/N 22, C/N 30 and C/N 38) of grass cuttings, mix vegetable waste, cattle manure, food waste and sawdust. Temperature,

Gasification of Municipal Wastewater Primary Sieved Solids in a Rotary Drum Reactor

Municipal sludge contains significant amounts of energy, which can be exploited by the use of anaerobic digestion, combustion or gasification. However, the relatively high moisture content of dewatered biosolids (usually over 80%) and long field experience makes anaerobic digesti

Residual Municipal Solid Wastes Within A Rotary Drum Reactor: Impact Of Retention Time

In the favourable current context for the development of biological treatment of Residual Municipal Solid Wastes (RMSW), the Rotary Drum Reactor (RDR) is a pre-treatment tool increasingly used in construction or rehabilitation facilities. RDR allows a better preparation of waste

Feasibility of Composting Combinations of Sewage Sludge, Cattle Manure, and Sawdust in a Rotary Drum Reactor

The aim of this paper was to study the effect of five different waste combinations (C/N 15, C/N 20, C/N 25, C/N 30, and control) of sewage sludge coupled with sawdust and cattle manure in a pilot scale rotary drum reactor, during 20 days of the composting process. Our results sho

Sealing of Rotary Drums for Operation Under Pressurized Conditions

Numerical Study on a Novel Type of High Gravity Rotary Gas-Liquid Separator

In textile printing and dyeing industry, a novel type of separator called high gravity rotary gas-liquid separator (HGRGS) is designed, which includes a rotary drum with multi-layer fins and an impeller. First, the structure and separation principle of HGRGS are introduced in thi

Uji Kinerja Mesin Penyangrai Biji Kopi Tipe Rotary Drum dengan Penambahan Isolator

Abstrak. Seiring perkembangan teknologi, mesin penyangraian akan terus berkembang sehingga menghasilkan produk biji kopi yang berkualitas. Kopi bubuk adalah telah disangrai, digiling atau ditumbuk hingga menyerupai serbuk halus. Proses bertujuan pembentukan rasa dan aroma pada ko

Modelling the final discharge angle in flighted rotary drums

Abstract Rotary drums equipped with longitudinal flights are mainly used to dry granular solids and handle high throughputs. The design of the is a crucial task because they decisively influence distribution particles over dryer cross section. In previous work, authors derived ma