… crushed ore, after concentration by flotation, is generally roasted or sintered, and is then reduced by smelting. During the roasting or sintering process, the sulphide is largely …
… and smoke. Insulators are often given bell, accordion, petticoat, grooved, cylinder or other shapes. Certain types … insulators include cap or hood type insulators, double petticoat insulators; chain link insulators; linked rod …
… of electrolytes for electrolytic capacitors and in the coating of paper. (3) Precipitated calcium borates . … (8) Other borates . Cadmium borate is used as a coating for fluorescent tubes. Cobalt borate is used as a …
… destroys morbid growths). With alkali sulphides, it forms thioarsenites of heading 28.42 . (c) Diarsenic … Used as a pigment. With alkali sulphides, it also forms thioarsenates of heading 28.42 . The heading …
… (e.g., by pressing on a corresponding button). Simple cupboards or containers with a coin‑operated lock, such as … by the heading : (a) Coin‑operated locks (e.g., for cupboards or public lavatories) ( heading 83.01 ). (b) …
