Submitted by Milena Rubi (milenarubi@ufscar.br) on 2016-10-25T23:33:10Z No. of bitstreams: 1 BARROS_Joao_2014.pdf: 6489061 bytes, checksum: 0cb2ffbbdb2ad52ec3e54efd745b9ac1 (MD5) / Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2016-10-25T23:34:13Z (GMT) No. of bitstreams: 1 BARROS_Joao_2014.pdf: 6489061 bytes, checksum: 0cb2ffbbdb2ad52ec3e54efd745b9ac1 (MD5) / Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2016-10-25T23:34:24Z (GMT) No. of bitstreams: 1 BARROS_Joao_2014.pdf: 6489061 bytes, checksum: 0cb2ffbbdb2ad52ec3e54efd745b9ac1 (MD5) / Made available in DSpace on 2016-10-25T23:34:35Z (GMT). No. of bitstreams: 1 BARROS_Joao_2014.pdf: 6489061 bytes, checksum: 0cb2ffbbdb2ad52ec3e54efd745b9ac1 (MD5) Previous issue date: 2014-05-25 / Não recebi financiamento / Brazil produces about 37 million cubic meters of charcoal per year whit an increasing due to the gradual coal replacement, once the coal mined in Brazil does not have adequate levels of carbon for some purposes, such as power generation. However, the large amount of coal found in all terrestrial crust propitiates an extremely low cost this product. Regarding to it, whit the intent to add value to the coal and provide an adequate destination to by-product (fine) of the charcoal, it was made briquettes of coal blends. For briquettes production it was used coal and charcoal fines, corn starch and boiling water at different proportions, summing up 25 treatments. Ten samples were made for each treatment, summing 250 specimens, wich were analyzed by the moisture content, proximate analysis, density, mechanical strength and thermal analysis. The treatments without the addition of binder were discarded because briquettes could not be formed from them. Other treatments had good features, reaching satisfactory results expect in relation to the formation briquettes (average mechanical strength of 0,2 MPa), presenting good mechanical strength for commercial application. According to the increased proportion of charcoal in the blend, the produced briquette achieved better results, mainly to thermal properties due to higher fixed carbon content (compared to coal) and reduced ash content, an appropriate behavior for various industrial and even residential applications. It was concluded that the use of by-products from vegetable and coal briquettes was technically feasible, providing advantageous physical characteristics for storage and transportation. / O Brasil produz aproximadamente 37 milhões de metros cúbicos de carvão vegetal por ano, e o crescimento tende a aumentar devido à gradativa substituição do uso de carvão mineral, uma vez que o carvão mineral extraído no Brasil não possui níveis de carbono adequados para diversas finalidades, como por exemplo, a geração de energia. Porém, a grande quantidade de carvão mineral encontrada em praticamente toda a crosta terrestre faz com que esse produto tenha um custo extremamente baixo. Diante disto, objetivou-se agregar valor ao carvão mineral e proporcionar uma destinação adequada ao subproduto (finos) do carvão vegetal, com a produção de briquetes de blendas de carvão. Para a produção dos briquetes foram utilizados os finos de carvão mineral e carvão vegetal, além do amido de milho e água fervente em diferentes proporções, totalizando 25 tratamentos. Para cada tratamento foram confeccionadas dez amostras, totalizando 250 corpos de prova. Foram realizadas as análises de umidade, análise imediata, densidades, resistências mecânicas e análise térmica. Os tratamentos sem a adição de aglutinante foram descartados, pois não houve a formação dos briquetes. Os demais tratamentos obtiveram boas características, atingindo resultado considerado satisfatório esperado em relação à formação dos briquetes (resistência mecânica média de 0,2 MPa). De acordo com o aumento da proporção de carvão vegetal na blenda, o briquete atingiu melhores resultados, principalmente em relação ás propriedades térmicas, devido ao maior teor de carbono fixo (em relação ao carvão mineral) e diminuição de teores de cinzas, comportamento adequado para diversas aplicações industriais e até residenciais. Concluiu-se que a utilização dos subprodutos de carvões vegetal e mineral na forma de briquetes foi tecnicamente viável, com características físicas vantajosas para o armazenamento e transporte.

This dissertation deals with design of briquetting press of metal splinters. Dissertation reacts to non-complexity of solutions of present products. Goal is to raise the attractivity of the machine and related increase in awareness of this machine with ecological and economic benefits. Dissertation emphasizes preservation of functionality, consideration of ergonomics and safety of the machine.

This project is devided to three parts - theoretical overview of cutting farm components, design of cutting farm for specified production cell and the design of chip conveyor for specified cuting machine. Theoretical overview introduces common commercial used components of cutting farm, their properties and using possibilities in particular regarding their applicability at cutting farm design and chip conveyor design. In the second part there is proposal of design of cutting farm for production cell consist of six identical multi-function machinig centers. For produced amount of chips there is proposal of their processing from the begining at cuting proccess up to their leavig production hall as a briquetts in a containers. At last part of this project there is complete design proposal of chip conveyor for mentioned multi-function maching center. Design is built from a basic line diagram up to design of particular components including calculations and analysis.

This thesis is concerned with cutting farm machine and it consists of three parts. Theoretical part describes mechanism of chip formation, shape of the chips, temperature of the chips, technological variables describing chips, chip conveyor, chip crusher, briquetting press and coolant filter. In the next part there is proposal of design of cutting farm machine for production cell consists of six machining center. At last part there is design proposal and calculation of chip conveyor.