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Tratamento de Minérios

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210 Britagem e Moagem CETEM<br />

Tabela 23 – Tipos <strong>de</strong> moinhos <strong>de</strong> barras industriais.<br />

Diâmetro Comprimento Velocida<strong>de</strong> Peso da Carga <strong>de</strong><br />

Barras (t)<br />

Potencial do Moinho<br />

(HP)<br />

m ft m ft L/D RPM %Vc % da Carga em Volume % da Carga em Volume<br />

35 40 45 35 40 45<br />

0,91 3,0 1,22 4 1,40 36,1 74,5 1,0 1,13 1,27 7 8 8<br />

1,22 4,0 1,83 6 1,57 30,6 74,7 2,25 2,58 2,9 23 25 26<br />

1,52 5,0 2,44 8 1,67 25,7 71,2 6,91 7,95 8,89 57 61 64<br />

1,83 6,0 3,05 10 1,73 23,1 70,7 13,1 15,0 16,8 114 122 128<br />

2,13 7,0 3,35 11 1,62 21,0 69,9 20,0 22,8 25,6 181 194 204<br />

2,44 8,0 3,66 12 1,53 19,4 69,3 29,0 33,2 37,4 275 295 310<br />

2,59 8,5 3,66 12 1,44 18,7 69,0 33,0 37,7 42,5 318 341 359<br />

2,74 9,0 3,66 12 1,38 17,9 67,5 36,0 41,1 45,5 344 369 388<br />

2,89 9,5 3,96 13 1,41 17,4 67,6 42,7 48,8 54,9 416 446 470<br />

3,05 10,0 4,27 14 1,44 16,8 67,0 51,5 59,0 63,8 507 544 572<br />

3,20 10,5 4,57 15 1,47 16,2 66,4 61,4 70,1 78,9 609 653 687<br />

3,35 11,0 4,88 16 1,50 15,9 66,08 72,5 82,8 93,5 735 788 829<br />

3,51 11,5 4,88 16 1,43 15,5 66,6 79,7 90,7 103 819 878 924<br />

3,66 12,0 4,88 16 1,37 15,1 66,4 82,7 99,8 112 906 972 1023<br />

3,81 12,5 5,49 18 1,48 14,7 66,0 104 119 134 1093 1173 1234<br />

3,96 13,0 5,79 19 1,50 14,3 65,6 120 137 154 1264 1356 1426<br />

4,12 13,5 5,79 19 1,44 14,0 65,5 130 148 166 1385 1486 1562<br />

4,27 14,0 6,10 20 1,46 13,6 64,9 147 169 190 1580 1695 1783<br />

4,42 14,5 6,10 20 1,41 13,3 64,6 159 181 204 1715 1840 1935<br />

4,57 15,0 6,10 20 1,36 13,0 64,3 171 194 219 1853 1988 2091<br />

BIBLIOGRAFIA<br />

1) GAUDIN, A.M. Principles of Minerals Dressing p. 70-123, N.Y. Mc Graw-Hill Book<br />

Company, 1945.<br />

2) TAGGART, A. Elements of Ore Dressing. p. 388-433. N.Y.J. Wiley and Sons Inc., 1951.<br />

3) TAGGART, A. (ed). Handbook of Mineral Dressing. Sec. 6,6. N.Y.J. Wiley and Sons Inc.,<br />

1945.<br />

4) ARBITER, N. (ed). Milling methods in the Americas. New York: Gordon and Breach,<br />

1964.<br />

5) PRYOR, E. J. Mineral Processing, Ch. 5. London Applied Publishers Ltda, 1965.<br />

6) BLAZY, P. La valorisation <strong>de</strong>s minerais. pg. 21-58, Presses Universitaries <strong>de</strong> France,<br />

1970.<br />

7) CONCHA, F. Fundamentos <strong>de</strong> las Operaciones Mecanicas. Cap. 3. Universidad <strong>de</strong><br />

Concepción, 1971.<br />

8) MULAR, A.; BULL, W. R. Mineral process, their analysis optimization and control.<br />

Ch. 4. Queen's University, Ontario, Canada, 1971.<br />

9) BOND, F.C. "Crushing and Grinding Calculations Reprints from Britsh Chemical<br />

Engineering" Allis Chalmers Publication, 1971.

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