The article presents the results of research of dryung asbestos ores in a suspended layer. Equations are obtained that reflect the effect of the initial moisture content of the ore on the Nusselt criterion. The obtained dependencies can be used for calculating tube-dryers for asbestos ores in a suspended layer.
Keywords: drying, tube-dryer, asbestos ore, suspended layer, moisture content, speed of the material, mass transfer coefficient, Reynolds criterion, Nusselt criterion, criterion equations
The article presents the results of research of hydrodynamics of flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the speed and concentration of lime carbonate along the length of the tube-dryer at different air velocities and feed concentrations are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of research of hydrodynamics of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.
Keywords: conversion lime carbonate, drying, tube-dryer
The article presents the results of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the influence of initial air temperature at moisture content in a tube-dryer, the influence of air temperature on heat rate are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.
Keywords: conversion lime carbonate, drying, tube-dryer
In article findings of investigation of process of drying of conversion lime carbonate in an air-operated tube-dryer are resulted. For the first time dependences of moisture content in a tube-dryer from reference temperature of air or gases and from length of a tube-dryer are received. Results of researches can be used for designing of tubes-dryers for large-tonnage productions of conversion lime carbonate.
Keywords: conversion lime carbonate, drying, tube-dryer
In article results of experiences on studying of aerodynamics of a polydisperse suspension of conversion lime carbonate are resulted. The equations for calculation of speeds and concentration of lime carbonate on length of a tube-dryer are received. The obtained data can be used at designing of industrial dryers.
Keywords: Conversion lime carbonate, drying, tube-dryer, aerodynamics.