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Date submitted2015-10-27
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Date accepted2015-12-14
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Date published2016-08-22
Studying the dependence of quality of coal fine briquettes on technological parameters of their production
- Authors:
- T. N. Aleksandrova
- A. V. Rasskazova
The study characterizes the role of coal in the fuel and energy balance of the Far East Region and points out the issue of losses of coal fines in the processes of coal mining, transportation and processing. To solve the problem of losses of coal fines, the mined coal is sorted into different size classes and fuel briquettes are produced from coal fines. Physical foundations are presented in short of briquetting solid combustible mineral resources. The dependences and variations of briquette compression strength limit are studied vs. charge humidity and briquetting pressure. Optimal parameters are retrieved for briquetting coal fines. The principal technological scheme is given of the process of briquette production. The developed technological solutions include sorting regular coal and briquetting coal fines, as well as the involvement of technogenic carbon-containing wastes from the hydrolysis production lines, plus residuals from oil refining.
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Date submitted2014-12-25
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Date accepted2015-02-07
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Date published2015-12-25
Nondestructive control of elasticity modulus anisotropy of composite materials in the products
- Authors:
- A. I. Potapov
The technique of nondestructive control of anisotropy of composite materials in a product us-ing a pulse ultrasonic method is considered in the article. Calculated dependence to determine the degree of filler orientation in a polymeric composite material with varying filler laying is shown. The following filler laying is considered: chaotic, longitudinally cross, unidirectional. In addition, experimental results of anisotropy control of the elastic modulus in glass-reinforced plastics with different degrees of anisotropy using the pulsed ultrasonic method are given in the article.