Metallurgical AnalysisMcGraw-Hill Book Company, Incorporated, 1924 - 472 sider |
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Metallurgical Analysis Nathaniel Wright Lord,Dana James Demorest Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
absorbed acetate acid solution added alkaline aluminium ammonia ammonium analysis antimony apparatus arsenic asbestos assay beaker bismuth bottle bulb burette c.c. of HCl c.c. of HNO3 c.c. of strong c.c. of water calcium calorimeter cent Chem chloride chromium coal coke color combustion containing cool copper crucible cubic centimeters cupel determination dilute dissolved drop end point evaporate to dryness excess ferric ferrous sulfate filter and wash filter paper filtrate flask fumes furnace fusion glass gram heat to boiling hot water hydrochloric acid hydrogen sulfide hydroxide ignite iodine iron lead liquid manganese mercury metal method minutes MnO2 NaOH naphthalene NH4OH nickel nitric acid obtained oxide oxygen permanganate phosphorus pipette platinum potassium present reagent removed residue rubber salts sample silica silver SiO2 slag small amount sodium carbonate soluble standard steel stirring stopper sulfuric acid temperature tion titanium titration tube vanadium volume weigh zinc
Populære avsnitt
Side xii - The total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the gases in the mixture.
Side 184 - Without interrupting the current, siphon off the acid solution, at the same time filling the beakers with distilled water. Remove the cathodes quickly and rinse them in distilled water and two successive baths of alcohol. An experienced operator can quickly remove a cathode and immerse it in water without loss. Throw off the excess alcohol by a quick motion of the hand and ignite the remainder by bringing the cathode quickly to the flame of an alcohol lamp; then keep the cathode moving continually...
Side 280 - C. require larger proportions of air to gas; however, a strongly reducing atmosphere is not so essential at the higher temperatures, as refractory ashes, owing to their low iron-oxide content, are only slightly affected by oxidizing or reducing atmospheres. After a test has been completed, turn the supply of gas and air off gradually to avoid cracking the muffle crucible. The softening temperature is...
Side 279 - While such a flame is maintained above the furnace, gradually increase the temperature by a suitable adjustment of gas and air to 800° C., then reduce the rate of heat increase to not less than 5° C. and not more than 10° C. per minute. Maintain this rate until the end of the test. It is also important that the 6-in.
Side 279 - Fig. 2, place the loosely fitting cover g on the crucible, and ignite the gas. It is necessary to let the gas burn about 10 minutes to heat the furnace parts before the large cover plate of the furnace is replaced; otherwise the flame is apt to blow out. During this time increase the flow of gas and air sufficiently to cause the combustion to take place just above the tuyeres and yet maintain a yellowish flame at least 6 in.
Side 278 - ... the bottom of the crucible, and a thermocouple hole 1 in. in diameter, 90 deg. to the right of the observation hole. The bottom of this hole should be in the same horizontal plane as the bottom of the observation hole.
Side 264 - After the more rapid discharge of volatile matter has subsided, as shown by the disappearance of the luminous flame, tap the cover lightly to more perfectly seal the crucible and thus guard against the admission of air.
Side 264 - C. ± 20° C. in the crucible, as shown by a thermocouple kept in the furnace. If the determination of volatile matter is not an essential feature of the specifications under which the coal or coke is bought, a Meker burner may be used. Method For Coal and Coke, Usual Method : Weigh 1 g.
Side 261 - ... into the rear wall of the drying chamber and the outer end is connected to a flask containing concentrated sulphuric acid. During a determination air under pressure is bubbled through this sulphuric acid, passes through the block-tin coil into the drying chamber and escapes through a small orifice in the door of the oven. The air is passed through at such a rate that a volume equal to the capacity of the oven passes through every six or eight minutes. Most of the moisture...
Side 423 - Water naturally containing bicarbonate and carbonate in excess of calcium and magnesium requires a larger amount of acid to neutralize the sample after it has been treated than is required to neutralize the volume of soda reagent originally added.