| 释义 |
nodulize, v. Metallurgy.|ˈnɒdjʊlaɪz|
[f. nodule + -ize.]
trans. To convert (esp. finely-divided iron ore) into nodules. So ˈnodulized ppl. a., ˈnodulizing vbl. n.
1905U.S. Patent 794,673 1/1 A new and useful Improvement in Methods or Processes of Purifying and Nodulizing Metalliferous Materials. 1905Iron Age LXXVI. 590/1 The National Metallurgic Company has erected what it terms an ore purifying and nodulizing plant. 1906Jrnl. Iron & Steel Inst. LXXI. 359 One rotary kiln..has produced an average of 75 to 90 tons of nodulised desulphurised pyrites cinder per day of twenty-four hours. 1921W. Gowland Metallurgy of Non-Ferrous Metals (ed. 3) 139, 62 per cent. of the concentrate is nodulized, 14 per cent. sintered, and 24 per cent. reduced direct. 1968E. N. Simons Outl. Metallurgy i. 3 Nodulizing..passes the ore too fine for use through a rotary kiln, in which it is heated with a relative movement between an internal rotary drum and an outer shell. Nodulizing has some advantages over sintering. Ibid. iii. 34 The graphite is present as tiny round balls, i.e. it is nodulized.
Hence noduliˈzation, the process of nodulizing.
1915Chem. Abstr. IX. 590 Nodulizing iron ores..by subjection first to a reducing flame at a temp. only slightly below that required for nodulization and then to an oxidizing flame which suddenly raises the temp. of the material above the nodulizing point. 1921W. Gowland Metallurgy of Non-Ferrous Metals (ed. 3) 138 In the process of nodulization the proportion of sulphur has been reduced from 28 to 18 per cent. 1968E. N. Simons Outl. Metallurgy iii. 34 Nodulization or spheroidization renders the iron stronger and more ductile. |
