The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 149
... material that results from roasting , known as calcine , is a fine mixture of the sulfides and oxides of iron and copper , gangue material , and nonvolatile impurities . The total sulfur content has been reduced to that desired for the ...
... material that results from roasting , known as calcine , is a fine mixture of the sulfides and oxides of iron and copper , gangue material , and nonvolatile impurities . The total sulfur content has been reduced to that desired for the ...
Page 334
... material located between the atoms of the material . In addition to the above atomic or " point " defects , crys- tals may have more extensive " line " defects , in which the disorder or dislocation extends along a line or plane of ...
... material located between the atoms of the material . In addition to the above atomic or " point " defects , crys- tals may have more extensive " line " defects , in which the disorder or dislocation extends along a line or plane of ...
Page 445
... material in proximity to coarser material is avoided . Bands of intermediately graded material must be inserted to prevent the finely graded material from leaching through the coarse zones . Filter zones are graded so each band is four ...
... material in proximity to coarser material is avoided . Bands of intermediately graded material must be inserted to prevent the finely graded material from leaching through the coarse zones . Filter zones are graded so each band is four ...
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