. Journal . of monazite into the UnitedStates during lOOS. The quantity and value of theimports of thorium nitrate during the last six years aregiven in the following table :— Year. Quantity. Value. 1903 . 64,52058,65552,37840,00051,44105,289 $232,165 1904 ... 1905 ...1006 ... 1907 ... 1908 .. 249,904269,604139,929152,600173,239 Tho exports of monazite in 1008 were very small, and consisted of a small shipment by one company to (Jcrmany. Iatknts. Nitric acid; Proceae of obtaining from gas mixtures containing oxides of nitrogen. L. (Uascr, Berlin,Germany, Assignor to (ieneral Electric Co., NewY
. Journal . of monazite into the UnitedStates during lOOS. The quantity and value of theimports of thorium nitrate during the last six years aregiven in the following table :— Year. Quantity. Value. 1903 . 64,52058,65552,37840,00051,44105,289 $232,165 1904 ... 1905 ...1006 ... 1907 ... 1908 .. 249,904269,604139,929152,600173,239 Tho exports of monazite in 1008 were very small, and consisted of a small shipment by one company to (Jcrmany. Iatknts. Nitric acid; Proceae of obtaining from gas mixtures containing oxides of nitrogen. L. (Uascr, Berlin,Germany, Assignor to (ieneral Electric Co., NewYork. Pat. 021,075, May IS, 1000. A MIXTURE of nitric oxide and air is passed over a weakbasic oxide, and the ])roduct is subsequently decomposedby heating under reduced pressure, the liberated gas beingabsorbed by water, so as to give commercial nitric acid. —F. SoDN. Xilrosul/iliuric iitids and diliitL nitric arid ; Apfiaratiis for prc/Hiring . 1*. Uideau. Ft. Iat. 31>(>,290, Jan. 21, NiTKic acid fumes are generated in the cast iron retort(A) and into a battery of coniniunicaling ironabsorption vessels (b). Below the al)sorlKrs a collectingvessel communicates with the cast iron (C)by way of the tube (f). The siphon ((!), (ixcnl to tho firstabsorber, also communicates with the re-xervoir (C)and maintains the li<|Uor inside the battery at a constantlevel. The rutiurvoir (C) eommunieates by miH of asiphon with the acid elevator (U), which conveys the lii|uor i to the cast iron reservoir (C*), whence it passes once !into the absorption vessels. The fan (E). preferably of tcentrifugal type, sucks the fumes through the al>sorbei|and conveys the waste gases up a chimney. To sfatho ap])aratUB, sulphuric acid is introduced into (Cltho tap (r) of the acid elevator is opened, and the fan 1set in rotation. For the preparation of dilute nitacid, the apparatus is constructed of stoneware inplace of cast iron.—0. R. Xitrates ; Process for t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
