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| RODRIGUES,DIULIA C.Q.; SOARES JUNIOR,ATÍLIO P.; COSTA JUNIOR,ESLY F.; COSTA,ANDRÉA O.S.. |
| ABSTRACT Cement is one of the most used building materials in the world. The process of cement production involves numerous and complex reactions that occur under different temperatures. Thus, there is great interest in the optimization of cement manufacturing. Clinker production is one of the main steps of cement production and it occurs inside the kiln. In this paper, the dry process of clinker production is analysed in a rotary kiln that operates in counter flow. The main phenomena involved in clinker production is as follows: free residual water evaporation of raw material, decomposition of magnesium carbonate, decarbonation, formation of C3A and C4AF, formation of dicalcium silicate, and formation of tricalcium silicate. The main objective of this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clinker; Dynamic analysis; Mathematical modelling; Rotary kiln. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603123 |
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| Hsu, Jane Lu; Su, Jyh-Luen. |
| Fruit production and consumption have increased considerably in the past few decades in Taiwan. Market prices of fruits fluctuate in response to seasonality, changes in production costs, imports and exports, and demand. Some factors are more influential to fruit price changes. This research utilizes the Vector Autoregressive Model to analyze effects of exogenous shocks to market prices of fruits. Dynamic models were developed for bananas, grapes, guavas, papayas, pineapples, and watermelons. For the market of bananas, prices of pesticides have delayed positive effects; an increase of watermelon prices raises the prices of bananas; prices of banana exports explain some variations of domestic banana prices. For the market of grapes, income, interest rates,... |
| Tipo: Presentation |
Palavras-chave: Dynamic analysis; Fruit market; Crop Production/Industries; Marketing. |
| Ano: 2000 |
URL: http://purl.umn.edu/123664 |
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