Moisture of bulk material has a significant impact on energetic efficiency of dry grinding, resultant particle size distribution and particle shape, and conditions of powder transport. As a consequence, moisture needs to be measured or estimated (modelled) in many points. This research investigates mutual relations between material moisture and particle classification process in a grinding installation. The experimental setup involves an inertial-impingement classifier and cyclone being part of dry grinding circuit with electromagnetic mill and recycle of coarse particles. The tested granular material is copper ore of particle size 0-1.25 mm and relative moisture content 0.5-5%, fed to the installation at various rates. Higher moisture of input material is found to change the operation of the classifier. Computed correlation coefficients show increased content of fine particles in lower product of classification. Additionally, drying of lower and upper classification products with respect to moisture of input material is modelled. Straight line models with and without saturation are estimated with recursive least squares method accounting for measurement errors in both predictor and response variables. These simple models are intended for use in automatic control system of the grinding installation.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7833444 | PMC |
| http://dx.doi.org/10.3390/s21020667 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Research on the Wear Suppression of Diamond Grain Enabled by Hexagonal Boron Nitride in Grinding Cast Steel.
Molecules
December 2024
School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
Diamond grinding wheels have been widely used to remove the residual features of cast parts, such as parting lines and pouring risers. However, diamond grains are prone to chemical wear as a result of their strong interaction with ferrous metals. To mitigate this wear, this study proposes the use of a novel water-based hexagonal boron nitride (hBN) as a minimum quantity lubrication (MQL) during the grinding of cast steel and conducted the grinding experiment and molecular dynamics simulation.
View Article and Find Full Text PDFInvestigation the CMP process of 6 H-SiC in HO solution with ReaxFF molecular dynamics simulation.
Sci Rep
January 2025
College of Mechanical Engineering, Zhejiang University of Technology, No.18, Chaowang Road, Hangzhou, 310014, Zhejiang Province, China.
To observe the chemical mechanical polishing (CMP) process at the atomic scale, reactive force field molecular dynamics (ReaxFF-MD) was employed to simulate the polishing of 6 H-SiC under three conditions: dry, pure water, and HO solution. This study examined the reactants on the surface of 6 H-SiC during the reaction in the HO solution, along with the dissociation and adsorption processes of HO and water molecules. The mechanisms for atom removal during the CMP process were elucidated.
View Article and Find Full Text PDFSurface-Grinding-Induced Recrystallization and Metal Flow Causes Corrosion-Assisted Penetrating Attack of High-Mn-Low-CR Casting Steel in Humid Environments.
Materials (Basel)
December 2024
Department of Materials Science and Engineering, Sunchon National University, Suncheon 57922, Republic of Korea.
This study examined the surface-grinding-induced microstructural modifications and corrosion attacks in a penetrating form of a high-Mn-low-Cr casting steel slab under humid environments. Various experimental and analytical findings from field-emission scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy, and electrochemical analyses revealed that the abrasive grinding process led to the formation of a surface deformed region, comprising a recrystallized fine grain layer and multiple streamlines. Corrosion initially occurs preferentially along the boundary areas where Cr(Mn)C particles are precipitated.
View Article and Find Full Text PDFMicronized versus super-conditioned corn: Effects on starch digestion, performance, and blood metabolites of Holstein dairy calves.
J Dairy Sci
December 2024
Science and Technology Park, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran; Department of Animal Science, Agricultural and Natural Resources Research and Education Center of Razavi Khorasan, Mashhad 91735-488, Iran. Electronic address:
Micronization, a dry-heat process, generates infrared electromagnetic short waves that can affect starch granules and gelatinization. A new method of corn processing, super-conditioned corn, a moisture-heat process, has potential to increase starch digestion and performance in calves. Therefore, incorporating super-conditioned or micronized corn in starter feed may enhance growth performance by improving total-tract starch digestion.
View Article and Find Full Text PDFPreparation and characterization of the ground mixture of rebamipide commercial tablets and Hydroxypropyl Cellulose-SSL by ball-milling: Application to the dispersoid of mouthwash suspension.
Eur J Pharm Biopharm
January 2025
Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. Electronic address:
In the present study, to prepare dispersoids with high dispersion stability that can be used as mouthwash, ground mixtures of commercial rebamipide (RB) tablets and hydroxypropyl cellulose (HPC-SSL) samples were prepared by dry milling. The physicochemical properties of the ground mixture of HPC-SSL and the powder obtained from the preliminary ground RB tablets were then compared. The dispersoids' physicochemical properties, dispersion stability, retention, and diffusiveness to the mucosal surfaces were evaluated in vitro.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!