The Chemical Engineer: A Monthly Journal of Practical, Applied and Analytical Chemistry, Band 11905 |
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added American ammonia ammonium amount analysis analytical anode apparatus asbestos asphalt cement assignor beaker bismuth bitumen blocks boiler boiling bottle burette calcium calcium chloride carbon cent chamber Chem CHEMICAL ENGINEER chemistry chemists chloride coal color combustion compounds containing copper creosote oil crucible cubic centimetres determination dilute dissolved distilled water electrolytic evaporated ferrous ferrous sulphate filter filtrate flask furnace gases glass gram heat hood hydrochloric acid hydrogen ignited inches industrial iron laboratory lime liquid manganese manufacturers material matter metal method minutes mixture moisture molybdic N₂O nitrate nitric acid obtained operation oxide oxygen paper pass permanganate phosphorus pipe platinum Portland Cement potassium potassium permanganate practical precipitate present pump quantity salt sample sewage soda sodium soluble solution standard steam steel stopper sulphate sulphide sulphuric acid technical chemist temperature tion washed weighed zinc zinc chloride
Beliebte Passagen
Seite 168 - A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours.
Seite 165 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment, and in a suitable weather-tight building which will protect the cement from dampness.
Seite 167 - These pats are observed at intervals for at least 28 days, and, to satisfactorily pass the tests, should remain firm and hard and show no signs of distortion, checking, cracking or disintegrating.
Seite 167 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.
Seite 167 - It shall develop initial set in not less than thirty minutes, but must develop hard set in not less than one hour, nor more than ten hours.
Seite 166 - This term shall be applied to the finely pulverized product resulting from the calcination of an argillaceous limestone at a temperature only sufficient to drive off the carbonic acid gas.
Seite 105 - Next add 50 cc. of the soda solution, or biifficient to make the reaction strongly alkaline, pouring it down the side of the flask so that it does not mix at once with the acid solution. Connect the flask with the condenser, mix the contents by shaking, and distill until all ammonia has passed over into the standard acid.
Seite 130 - In applying for this examination the exact "title as given at the head of this announcement should be used in the application. As examination papers are shipped direct from the Commission to the places of examination, it is necessary that applications be received in ample time to arrange for the examination desired at the place indicated by the applicant. The Commission will therefore arrange to examine any applicant whose application is received in time to permit the shipment of the necessary papers.
Seite 168 - Another pat is kept in water maintained as near 70° F. as practicable, and observed at intervals for at least 28 days.
Seite 167 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent. has been made subsequent to calcination.