【摘 要】
：
One of the main origins of fugitive dust emission arises from bulk handling in quarries or mines, in particular, from bulk materials falling from a hopper or a
【机 构】
：
Peter Werner Grundnig,Shandong University of Science and Technology
论文部分内容阅读
One of the main origins of fugitive dust emission arises from bulk handling in quarries or mines, in particular, from bulk materials falling from a hopper or a conveyor belt. Water-spraying systems, using two-phase nozzles,are one of the methods to suppress such dust emission. In this work we tried to develop a mathematical model to correlate air humidity, water flux through the nozzle and the dust (in particular PM10) emission, in order to improve the application and efficiency of these systems. Sand from the Yellow River in China was dropped from a conveyor belt into a dust chamber at 1 kg·min-1, wherefrom the emitted dust was sucked off and quantified via a cascade impactor. A two-phase nozzle was installed in the dust chamber with a water flux through the nozzle of 1.2 to 3 L·h-1, whereas the relative air humidity changed between 55 and 73%. Dust emission was found to be linearly dependent on relative air humidity. Furthermore model equations were developed to describe the dependence of PM10 emission on water flux and relative air humidity.
其他文献
A series of ethyl 5-hydroxyindole-3-carboxylates 6a-10r was designed and synthesized. The structures of all the compounds were confirmed by IR, 1H NMR, and MS a
New saponin 26-O-tert-butyldimethylsiliyl protodiosgenyl β-D-glucopyranoside 1 was synthesized and its cytotoxicity activity in vitro was evaluated by MTT. It
基于密度泛函理论,在B3LYP/6-31G*水平下分别计算了潜在高能量密度化合物(HEDC)多硝基六氮杂金刚烷(PNHAAs)的结构,包括总能量、几何结构、氧平衡、偶极矩等.通过研究PNHAAs
In order to increase the cell penetration and decrease the cytotoxicity of the synthetic molecule, we designed and synthesized a DNA-binding ligand, which was a
This paper is concerned with a class of semilinear hyperbolic systems in odd space dimensions. Our main aim is to prove the existence of a small amplitude solut
ZnO(002) films with different thicknesses, grown on Al2O3 (006) substrates by metal-organic chemical vapor deposition( MOCVD), were etched by Ar ion beams. The
The properties of the porous granules produced by agglomeration of catalytically grown carbon nanofibers were investigated in this work. The single pellet crush
A photoionization cross section calculation of Mn+ is performed in the formalism of many-body perturbation theory for photon energies ranging from 48 eV to 56 e