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grinding method

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Journal Article
Published: 01 April 1959
American Mineralogist (1959) 44 (3-4): 423-428.
... of the method is that information on the symmetry of hardness vectors is quickly obtained from the measurements. It occurred to the writers that the peripheral grinding method might be used to verify experimentally the hypothesis that grinding hardness is a non-centrosymmetric property of crystals. Quartz...
Journal Article
Journal: Economic Geology
Published: 01 March 1949
Economic Geology (1949) 44 (2): 119-127.
... mixtures of oils are given. Grinding and polishing can be done with specimen held in the hand. A supplementary device holding a mounted specimen mechanically permits high pressure for polishing and greatly reduces polishing time for hard materials. The grinding methods are effective in making thin sections...
Journal Article
Published: 01 January 1959
Micropaleontology (1959) 5 (1): 76.
Journal Article
Published: 01 April 1958
Micropaleontology (1958) 4 (2): 209-210.
Journal Article
Published: 01 August 2009
Clays and Clay Minerals (2009) 57 (4): 486-493.
...-triethylenetetramine (Cu-trien) CEC method and the influence of mechanical and chemical pretreatment, with the ammonium acetate method serving as a reference. The Cu-trien method makes rapid and direct CEC measurements possible. Three different kinds of mill were used to grind a vermiculite sample from Russia...
Journal Article
Published: 01 February 1953
American Mineralogist (1953) 38 (1-2): 108-117.
...Reynolds M. Denning Abstract In order to measure the relative variation of grinding hardness in single diamond crystals, two mechanisms have been constructed. One, which might be called a hardness comparator, permits the simultaneous cutting of two crystals. One crystal is oriented...
Journal Article
Published: 01 September 1941
American Mineralogist (1941) 26 (9): 568-570.
... of failure: (1) insufficient observation of the progress of the grinding, and (2) curvature of the glass grinding plates. Although the remedial methods given here may be in use, the writer is not aware of mention of them in the literature. Copyright © 1941 by the Mineralogical Society of America 1941...
Journal Article
Published: 01 August 2015
Clays and Clay Minerals (2015) 63 (4): 311-327.
... al. , 2009 ). Various grinding methods are commonly employed to reduce the crystal size of phyllosilicates. The structure, properties, and behavior of phyllosilicates as a function of grinding have been studied in order to find new technological approaches for phyllosilicate processing ( e.g...
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Journal Article
Journal: Clay Minerals
Published: 01 April 2000
Clay Minerals (2000) 35 (2): 423-432.
... the BWA method are very consistent with visual evaluation of the XRD basal reflections. Crystallite thicknesses decrease with grinding time and inversely with sample mass (Figs. 1b , 2 ). The original mean crystallite thickness of the Vígl’ašská Huta sample is ~20 nm. The mean thickness of the largest...
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Journal Article
Journal: Clay Minerals
Published: 01 March 2016
Clay Minerals (2016) 51 (1): 69-80.
... analyser. The samples were preheated at 100°C under vacuum for 2 h and were subjected to analysis at 77 K. The specific surface areas of the samples were calculated using the multi-point Brunauer-Emmet-Teller (BET) method. The X-ray diffraction (XRD) patterns showed that the amorphization...
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Journal Article
Journal: Clay Minerals
Published: 01 March 2001
Clay Minerals (2001) 36 (1): 105-114.
... be improved by decrease in particle size. This is usually done by grinding. For kaolinite, the more effective method proved to be dry rather than wet grinding and oscillatory rather than ball milling ( Suraj et al. , 1997 ). Grinding of kaolinite and pyrophyllite results in folding, gliding of layers...
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Journal Article
Journal: Clay Minerals
Published: 01 June 2004
Clay Minerals (2004) 39 (2): 163-175.
...G. E. CHRISTIDIS; P. MAKRI; V. PERDIKATSIS Abstract The influence of grinding on colour and particle-size properties of talc and smectite from a white bentonite were studied and compared with a fine-grained calcite from a chalk. Grinding decreased the grain size of all three minerals...
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Journal Article
Published: 01 November 2002
American Mineralogist (2002) 87 (11-12): 1626-1630.
...-defect material in the coarsest size fractions whereas others contain the lowest-defect kaolinite in the finest fractions. In an attempt to clarify possible mechanisms for producing such kaolinite samples, we have used powder X-ray diffraction to study the effects of mechanical grinding on the nature...
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Journal Article
Published: 01 June 1980
Journal of Sedimentary Research (1980) 50 (2): 621-622.
...A. Socci Abstract A method of dry and semi-dry thin-sectioning of mudstones, siltstones, and some friable sandstones, which have a tendency to disaggregate in water, is presented as an alternative to impregnating such samples, particularly if equipment and materials are scarce. Samples are first...
Journal Article
Published: 01 April 2010
Clays and Clay Minerals (2010) 58 (2): 143-153.
... stresses imposed by the grinding tool. Understanding the effects of a grinding process is, therefore, important in order to characterize the ground solids, from the point of view of their surface-interaction potential. Analytical methods based on the adsorption phenomenon are particularly well suited...
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Journal Article
Published: 01 June 2008
Clays and Clay Minerals (2008) 56 (3): 380-388.
... and leaching of vermiculite are difficult to determine. The most suitable method is Mössbauer spectroscopy. Grinding produces surface modifications of clays. Even grinding for short times induces a considerable particle-size reduction in vermiculite. Increasing grinding time leads to severe structure...
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Journal Article
Journal: Clay Minerals
Published: 01 June 2014
Clay Minerals (2014) 49 (3): 457-471.
... achieved by the mechanochemical method (¼ h of co-grinding with 1:2 SGMR at 300 rpm), followed by 16 h ageing at 57% relative humidity. grinding intercalation kaolinite halloysite mechanochemical homogenization potassium acetate Kaolinite and halloysite, members of the kaolin group, are 1:1...
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Journal Article
Published: 01 February 1959
American Mineralogist (1959) 44 (1-2): 189-193.
...M. A. Short; E. G. Steward Abstract It is well known that the effect of mechanical work, such as grinding or the application of pressure, is progressively to convert zinc sulphide of initially hexagonal structure towards the cubic structure. In the course of an investigation (1) into the effect...
Journal Article
Published: 01 March 1973
Journal of Sedimentary Research (1973) 43 (1): 298-301.
...Gail M. Ashley Abstract A modification of Altemuller's method of impregnation of soils with a polyester resin (Vestopal H) was developed to facilitate the thin-sectioning of fine-grained sediments. The laboratory apparatus is of simple design and economical to construct and operate. The resulting...
Journal Article
Published: 01 September 1967
Journal of Sedimentary Research (1967) 37 (3): 970-971.
...Walter B. Charm Abstract Freeze drying fine sediments provides an effective method of transforming the wet sediment into a dry powder. This method eliminates the processes of grinding, boiling, and treating oven dried sediments with chemicals in order that they may be dispersed into a powdered form...