Author: H. B. Peterson
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
Four samples of potassium bicarbonate base fire extinguishing powders, 'Purple-K-Powder, ' which had been ground to different degrees of fineness were analyzed for particle size characteristics by several different methods. These were the Blaine Fineness test, the Roller Particle Analyzer, the Coulter Counter, surface area by nitrogen adsorption, and mercury porosity. Comparisons were made of the results of the procedures. Highest values for specific surface were obtained by the nitrogen adsorption method followed by the Blaine, the Coulter, and then the Roller Methods, in that order. No conclusions were made as to which method gave the most accurate result for particle size, but it was found that the mean diameter was a better basis for comparing results than was the median diameter. Although the relationships of specific surface values among methods were non-linear over wide ranges, face values among methods were nonlinear over wide ranges, calibration curves were made to facilitate conversion. It was also concluded that specific surface values, as obtained by permeability with the Blaine method, were adequate for describing the desired size of particles for fire extinguishing purposes. (Author).
The Measurement of Particle Size of Fire Fighting Dry Chemicals
Author: H. B. Peterson
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
Four samples of potassium bicarbonate base fire extinguishing powders, 'Purple-K-Powder, ' which had been ground to different degrees of fineness were analyzed for particle size characteristics by several different methods. These were the Blaine Fineness test, the Roller Particle Analyzer, the Coulter Counter, surface area by nitrogen adsorption, and mercury porosity. Comparisons were made of the results of the procedures. Highest values for specific surface were obtained by the nitrogen adsorption method followed by the Blaine, the Coulter, and then the Roller Methods, in that order. No conclusions were made as to which method gave the most accurate result for particle size, but it was found that the mean diameter was a better basis for comparing results than was the median diameter. Although the relationships of specific surface values among methods were non-linear over wide ranges, face values among methods were nonlinear over wide ranges, calibration curves were made to facilitate conversion. It was also concluded that specific surface values, as obtained by permeability with the Blaine method, were adequate for describing the desired size of particles for fire extinguishing purposes. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
Four samples of potassium bicarbonate base fire extinguishing powders, 'Purple-K-Powder, ' which had been ground to different degrees of fineness were analyzed for particle size characteristics by several different methods. These were the Blaine Fineness test, the Roller Particle Analyzer, the Coulter Counter, surface area by nitrogen adsorption, and mercury porosity. Comparisons were made of the results of the procedures. Highest values for specific surface were obtained by the nitrogen adsorption method followed by the Blaine, the Coulter, and then the Roller Methods, in that order. No conclusions were made as to which method gave the most accurate result for particle size, but it was found that the mean diameter was a better basis for comparing results than was the median diameter. Although the relationships of specific surface values among methods were non-linear over wide ranges, face values among methods were nonlinear over wide ranges, calibration curves were made to facilitate conversion. It was also concluded that specific surface values, as obtained by permeability with the Blaine method, were adequate for describing the desired size of particles for fire extinguishing purposes. (Author).
Report of NRL Progress
Author: Naval Research Laboratory (U.S.)
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 314
Book Description
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 314
Book Description
Catalog of Books and Reports in the Bureau of Mines Technical Library, Pittsburgh, Pa
Author: United States. Bureau of Mines. Technical Library, Pittsburgh
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 778
Book Description
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 778
Book Description
The Electrical Sensing Zone Method of Particle Size Measurement
Author: Terence Allen
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 132
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 132
Book Description
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
Book Description
Dimensions
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 488
Book Description
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 488
Book Description
NRL Report
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 710
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 710
Book Description
Government-wide Index to Federal Research & Development Reports
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 980
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 980
Book Description
U.S. Government Research and Development Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 616
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 616
Book Description
Technical Information Indexes
Author: United States. Naval Air Systems Command
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 156
Book Description
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 156
Book Description