Cryogenic Grinding of Spices Is a Novel Approach Whereas Ambient Grinding Needs Improvement
نویسنده
چکیده
Study on ambient and cryogenic grinding was performed to test the novelty of cryogenic grinding and pin point the drawbacks of ambient grinding. Comparative study had shown that ambient grinding need more power (8.92%) and specific energy (14.5%) than cryogenic grinding. Particle size analysis had shown that cryogenic grinding produced coarser particles. Comparative study of energy law constant shows that ambient is more power consumptive. The higher amount of volatile oil (2.15 ml/100 g) content was found in cryogenic grinding and also powder of freshness and lower whiteness (40%) and higher yellowness (14%) indices found for cryogenic grinding.
منابع مشابه
Characterization, Analysis and Comparison of Activated Carbons Issued from the Cryogenic and Ambient Grinding of Used Tyres
Activated carbons were obtained from the cryogenic grinding of used tyres using the liquid nitrogen as agent of freezing and compared to those obtained by the ambient grinding,. These products were prepared using the chemical activated method. It consists of impregnation of the powder obtained from the cryogrinded and ambient grinded used tyres by phosphoric acid, followed by a carbonization at...
متن کاملSurface hardness improvement in high efficiency deep grinding process by optimization of operating parameters
The grinding is one of the most important methods that directly affects tolerances in dimensions, quality and finished surface of products. One of the major problems in the material removal processes specially grinding is the heat generation during the process and the residual tensile stress in the surfaces of product. Therefore, optimization of High Efficiency Deep Grinding (HEDG) process is t...
متن کاملGrinding: An Insight into The New Era
As we enter a new millennium, society is faced with fresh challenges in every conceivable area. Through the speciality of forensic odontology, dentistry plays a small but significant role in identification of individuals. Cryogenic Grinding is the act of cooling or chilling a material and then reducing it to a small particle size. DNA is extracted from human teeth with the help of cryogenic gri...
متن کاملA developed approach based on grinding time to determine ore comminution properties
In this paper, iron ore sample from the Chadormalu was investigated to determine some comminution properties. Chadormalu deposit is one of the largest iron ore mine in Iran, which is located in Yazd province. The representative ore sample contained 57%Fe, 0.9%P and 0.17%S. The sample was crushed; afterward, it was ground in various grinding times according to the Bond Ball mill approach to spec...
متن کاملEfficacy of fuzzy MADM approach in Six Sigma analysis phase in automotive sector
Six Sigma is a strategy for achieving process improvement and operational excellence within an organization. Decisions on critical parameter selection in analysis phase are always very crucial; it plays a primary role in successful execution of Six Sigma project and for productivity improvement in manufacturing environment and involves the imprecise, vague and uncertain information. Using a cas...
متن کامل