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Abstrakty
Due to its low surface energy, easy dispersion, high homogeneity and whiteness, coated (modified) calcite has increasingly been used in many industries, particularly in the plastics. The demand for this product will most likely increase in the years to come. Surface modification of calcite with a fatty acid would lead to a great expansion of industrial applications. The color values of coated calcite products are the first quality parameter. Therefore, it is very important to monitor the variations in the color characteristics of the coated calcite products. It is well known that statistical process control (SPC) techniques have been widely used in the many industries. In the present study, the surface of micronized calcite was coated with stearic acid by a pin mill. X-R control graphics and process capability index were applied for monitoring variations in quality control based on color parameters (L*, a* and b*) for the pin mill plant. In addition, active ratio, particle size distribution, whiteness parameters, BET, FTIR, TGA-DTA and SEM were then determined on a coated calcite sample. The results show that the pin mill plant seems under control and the coating technology is very effective in modifying the surface of micronized calcite products.
Rocznik
Tom
Strony
803--820
Opis fizyczny
Bibliogr. 28 poz., rys., tab.
Twórcy
autor
- Bayburt University, Materials Science and Nanotechnology Engineering Department, Turkey
autor
- Mikrokal Calcite Company, Turkey
autor
- Mikrokal Calcite Company, Turkey
autor
- Bayburt University, Materials Science and Nanotechnology Engineering Department, Turkey
autor
- Mikrokal Calcite Company, Turkey
Bibliografia
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- CIFRULAK S.D., 1970, High-pressure Mid-infrared Studies of Calcium Carbonate, Amer. Mineral. 55, 815-824.
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- CHEN M.S., WU M.H., LIN C.M., 2014, Application of Indices Cp and Cpk to Improve Quality Control Capability in Clinical Biochemistry Laboratories, Chin. J. Physio. 57, 63-68.
- DENIZ V., UMUCU Y., 2010, Particle Size Control with Control Charts in a Vertical Roller Mill, XIIth International Mineral Processing Symposium, 109-116.
- DING H., LU S.C., DENG Y.X., DU C.X., 2007, Mechano-Activated Surface Modification of Calcium Carbonate in Wet Stirred Mill and Its Properties, Trans. Nonferrous Met. Soc. China 17, 1100-1104.
- DUDEK-BURLIKOWSKA M., 2005, Quality Estimation of Process with Usage Control Charts Type X-R and Quality Capability of Process Cp, Cpk, J. Mater. Process. Technol. 162, 736-743.
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- GOMARI K.A.R., HAMOUDA A.A., DENOYEL R., 2006, Influence of Sulfate Ions on the Interaction Between Fatty Acids and Calcite Surface, Colloids Surf. A: Physicochem. Eng. Aspects 287, 29-35.
- HOWARD D., 2003, The Basics of statistical Process Control & Process Behavior Charting, First Edition, Management-Newstyle. Chislehurst, Kent.
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- JOINER A., HOPKINSON I., DENG Y., WESTLAN S., 2008, Review of Tooth Colour and Whiteness, J. Dentistry 36, 2-7.
- MURRAY H., 2002, Industrial Clays Case Study. Report of the Mining, Minerals and Sustainable Development Project, International Institute for Environment and Development and World Business Council for Sustainable Development, 64.
- PARKASH V., KUMAR D., RAJORIA R., 2013, Statistical Process Control, Int. J. Res. Eng. Tech., 2, 70-72.
- OSMAN M.A., SUTER U.W., 2003, Surface Treatment of Calcite with Fatty Acids: Structure and Properties of Organic Monolayer, Chem. Mater. 14, 4408-4415.
- SEKULIC Z., MIHAJLOVIC S., DAKOVIC A., KRAGOVIC M., STANIC T., 2009, Modification of Calcite with Stearic Acid Using the Solution Method, 7th Industrial Minerals Symposium 328 and Exhibition, Izmir, 218-224.
- SHARAFUDEEN R., 2012, The Manufacturing Process Parameters Affecting Color and Brightness of TiO2 Pigment, Int. J. Ind. Chem. 3, 1-7.
- SHARMA G.V.S.S., RAO P.S., 2013, Process Capability Improvement of an Engine Connecting Rod Machining Process, J. Ind. Eng. Int. 9, 2-9.
- SHENG Y., ZHOU B., WANG C., ZHAO X., DENG Y., WANG Z., 2006, In Situ Preparation of Hydrophobic CaCO3 in the Presence of Sodium Oleate, Appl. Surf. Sci. 253, 1983-1987.
- STRAUCH D., BELGER P., HOFER H., MERZ M., 1998, Pltiss-Staufer AG, U.S. Patent 4,767, 464.
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- WERNER R., 2000, Effect of Extenders with Narrow and Broad Particle Size Distribution on the Properties of Coating, Technol. Form, 72, 90-93.
- WOODALL W.H., 2000, Controversies and Contradictions in Statistical Process Control,. J. Qual. Technol. 32, 341-350.
- WU W., LU S.C., 2003, Mechano-chemical Surface Modification of Calcium Carbonate Particles by Polymer Grafting, Powder Technol. 137, 41-48.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3a928d93-dada-4cda-b2f8-a9788d091fa0