نتایج جستجو برای: ball mill

تعداد نتایج: 39497  

2017
Joel M. Andersen James Mack

Mechanochemistry continues to reveal new possibilities in chemistry including the opportunity for “greening” reactions. Nevertheless, a clear understanding of the energetic transformations within mechanochemical systems remains elusive. We employed a uniquely modified ball mill and strategically chosen Diels–Alder reactions to evaluate the role of several ball-milling variables. This revealed t...

Natural Akermanite (NAM) has been successfully prepared by a modified sol-gel method. Optimization in calcination temperature and mechanical ball milling resulted in a pure and nano-sized powder which characterized by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared Spectroscopy (FT–IR). Calcium nitrate, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده معدن 1392

مدل سازی ریاضی مدارهای فرآوری جهت طراحی، تحلیل و بهینه سازی آن ها گسترش پیدا کرده است. در این تحقیق یک نرم افزار (grindsim) بر پایه نرم افزار صفحه گسترده microsoft excel© جهت شبیه سازی خردایش و طبقه بندی در مدارهای آسیاهای گلوله ای نوشته شد. در این نرم افزار با مشخص بودن مشخصات خوراک، آسیا و هیدروسیکلون و شرایط عملیاتی می توان در مدار باز و مدار بسته دبی و دانه بندی جریان های مختلف را شبیه سازی...

Journal: :journal of agricultural science and technology 2012
s. yeganehzad m. mazaheri tehrani m. mohebbi m. b. habibi najafi z. baratian

rheological properties of chocolate are important in manufacturing process for obtaining high-quality products with well-defined texture and are directly influenced by composition and their refining time. soy protein benefits from nutritional and functional properties to be used in different foods. effects of different replacement levels of skim milk powder by soy flour, (from 0 to 100%) and ba...

2017
Nicolas Pétry Hafid Benakki Eric Clot Pascal Retailleau Farhate Guenoun Fatima Asserar Chakib Sekkat Thomas-Xavier Métro Jean Martinez Frédéric Lamaty

Ball milling was exploited to prepare a substituted proline building block by mechanochemical nucleophilic substitution. Subsequently, the mechanocoupling of hindered proline amino acid derivatives was developed to provide proline-proline dipeptides under solvent-free conditions. A deprotection-cyclization sequence yielded the corresponding diketopiperazines that were obtained with a high stere...

2017
Anamarija Briš Mateja Đud Davor Margetić

The mechanochemical N-alkylation of imide derivatives was studied. Reactions under solvent-free conditions in a ball mill gave good yields and could be put in place of the classical solution conditions. The method is general and can be applied to various imides and alkyl halides. Phthalimides prepared under ball milling conditions were used in a mechanochemical Gabriel synthesis of amines by th...

2017
Zhongqi He Huai N. Cheng Thomas Klasson O. Modesto Olanya Joseph Uknalis

Water washing of cottonseed meal is more cost-efficient and environmentally friendly than protein isolation by means of alkaline extraction and acidic precipitation. Thus, water-washed cottonseed meal (WCSM) is more promising as biobased wood adhesives. In this work, we examined the effects of the particle size on the morphology and adhesive performance of WCSM. Pilot-scale produced and dried W...

Journal: :Micro & Nano Letters 2023

Silica-aluminium composite powders are important precursors for the preparation of sealant coatings by supersonic flame spraying. Micron-scale silica-aluminium can be prepared using a planetary ball mill, but powder agglomeration often leads to failure. Using relevant modelling software build 3D mill jar, which based on discrete element method, Hertz–Mindlin contact model and after specifying s...

2012
Rajesh Purohit R. S. Rana C. S. Verma

Metal matrix composites are the class of composite materials finding vast applications in automotive, aircraft, defense, sports and appliance industries. A horizontal ball mill has been fabricated for milling of aluminum and SiC particles. The change in powder particle morphology during mechanical alloying of Aluminum and SiC powders using horizontal ball mill was studied. Al-SiCp composites wi...

2015
Tianyou Chai Lianfei Zhai Heng Yue

Using a ball mill coal-pulverizing system as a motivating/application example, a class of complex industrial processes is investigated in this paper, which has strong couplings among loops, high nonlinearities and time-varying dynamics under different operation conditions. Focusing on such processes, an intelligent decoupling controlmethod is developed, where the effects of nonlinearities are d...

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