The effect of grinding media on the breakage rate in a planetary ball mill

1991 ◽  
Vol 2 (2) ◽  
pp. 91-101 ◽  
Author(s):  
Qian-Qiu Zhao ◽  
Genji Jimbo
Keyword(s):  
Ball Mill ◽  
Planetary Ball Mill ◽  
Grinding Media ◽  
Breakage Rate

Fast, solvent-free and highly enantioselective fluorination of β-keto esters catalyzed by chiral copper complexes in a ball mill

2017 ◽  
Vol 19 (7) ◽  
pp. 1674-1677 ◽  
Author(s):  
Yifeng Wang ◽  
Haojiang Wang ◽  
Yidong Jiang ◽  
Cheng Zhang ◽  
Juanjuan Shao ◽  
...  
Keyword(s):  
Ball Mill ◽  
Copper Complexes ◽  
Solvent Free ◽  
Planetary Ball Mill ◽  
Keto Esters ◽  
Solvent Free Conditions

A fast and highly enantioselective fluorination of β-keto esters catalyzed by diphenylamine linked bis(oxazoline)-Cu(OTf)2 complexes under solvent-free conditions has been developed using a planetary ball mill.

Analysis of the breakage rate function for selected process parameters in quartzite milling

2012 ◽  
Vol 33 (1) ◽  
pp. 117-129 ◽  
Author(s):  
Tomasz Olejnik
Keyword(s):  
Process Parameters ◽  
Rate Function ◽  
Variable Number ◽  
Specific Rate ◽  
Gardner Equation ◽  
Contact Points ◽  
Batch System ◽  
Grinding Media ◽  
Breakage Rate ◽  
The Impact

Analysis of the breakage rate function for selected process parameters in quartzite milling The paper presents the results of studies on quartzite milling in a ball mill. The milling was conducted in a batch system, for diversified compositions of balls. The milling product was subjected to granulometrical, morphological and strength analyses. On the basis of the developed Reid's theory and using the Austin-Gardner equation, a form of the function circumscribing the specific rate of comminution of selected size fractions was determined. The values of the breakage rate function bi, j for the mill's apparatus conditions were determined. The impact was investigated for a variable number of grinding media contact points on the values of specific rate S and the values of the breakage rate function bi, j. Furthermore, the values of coefficients occurring in the equations circumscribing the specific rate of milling S and breakage parameter bi, j were determined.

scholarly journals Production of Ultrafine Particles by Continuous Planetary Ball Mill.

1991 ◽  
Vol 38 (2) ◽  
pp. 66-69
Author(s):  
Kantaro KANEKO ◽  
Mutsuhiro KAWASHIMA
Keyword(s):  
Ball Mill ◽  
Ultrafine Particles ◽  
Planetary Ball Mill

scholarly journals Analysis of early-stage sintering mechanisms of mechanically activated BaTiO3

2006 ◽  
Vol 38 (3) ◽  
pp. 239-244 ◽  
Author(s):  
M.V. Nikolic ◽  
V.P. Pavlovic ◽  
V.B. Pavlovic ◽  
M.M. Ristic
Keyword(s):  
Barium Titanate ◽  
Temperature Interval ◽  
Ball Mill ◽  
Early Stage ◽  
Planetary Ball Mill ◽  
Heating Rates ◽  
Barium Titanate Powder ◽  
Powder Samples ◽  
Sintering Mechanisms

Barium-titanate powder was mechanically activated in a planetary-ball mill for 60 and 120 minutes. Non-isothermal sintering of non-activated and activated powder samples was investigated using a dilatometer in the temperature interval from room to 1380oC with three different heating rates (10, 20 and 30oC/min). Early-stage sintering mechanisms for all three types of samples were analyzed, showing significant differences between the non-activated and mechanically activated samples.

Antistatic Composite Coаtings on the Basis of Powder Paints

2014 ◽  
Vol 1040 ◽  
pp. 3-7
Author(s):  
Sergey Panin ◽  
Sergey Y. Yazykov ◽  
Boris Ovechkin
Keyword(s):  
Magnesium Alloy ◽  
Functional Properties ◽  
Powder Mixture ◽  
Ball Mill ◽  
Outer Space ◽  
Planetary Ball Mill ◽  
Static Electricity ◽  
Protective Function ◽  
Electrostatic Deposition ◽  
Space Conditions

For operating under outer space conditions besides providing originally specified protective function, coating should often ensure accomplishment of functional properties, for instance conductivity of electric current. The solution of this problem can be reached by adding powder fillers with specified functional properties into powder paint. The paper deals with development of technique for formation of protective conducting coatings by filling powder paints and treatment in planetary ball mill. For protection of magnesium alloy shells the technique is offered which combines formation of the oxidized sublayer, introduction of electroconductive filler, treatment of the powder mixture in the planetary ball mill and electrostatic deposition of sifted mixture of definite dispersion. This allows sinking of static electricity from cabinets of the equipment for the space-crafts applications in conditions of the outer space.

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