. Ontario Sessional Papers, 1897-98, and found to be , , and percent, respectively. In attempting to getsample B into solution by fusion with acidsodium sulphate a small quantity remainedinsoluble even after three fusions. Only asmall portion of this was silica, as wasshown by evaporating with hydrofluoric andsulphuric acids. The remainder yieldedreadily to acid potassium sulphate, and wasshown to consist of the cerite earths. In the library at our command I have beenunable to find a chemical method for thePreparing Commercial analysis of corundumfor treat-^^ ^o*^^ • -^^
. Ontario Sessional Papers, 1897-98, and found to be , , and percent, respectively. In attempting to getsample B into solution by fusion with acidsodium sulphate a small quantity remainedinsoluble even after three fusions. Only asmall portion of this was silica, as wasshown by evaporating with hydrofluoric andsulphuric acids. The remainder yieldedreadily to acid potassium sulphate, and wasshown to consist of the cerite earths. In the library at our command I have beenunable to find a chemical method for thePreparing Commercial analysis of corundumfor treat-^^ ^o*^^ • -^^ attempt has been madement. ^q work out a method based on the fact that corundum, especially after ignition,is nearly insoluble in hydrofluoric acid, whilethe rock matter, unless it contains such con-stituents as barium sulphate, is completelysoluble. In preparing the samples for treat- 238 L Plate i. CRUSHING Curves of Corundum Rock, Hastings Ont. Solid line Crushed in Blake Crusher, i Dashed line .. ., Rolls, J „ and dotted I me fe. Plate II. Crushing Curve, Corundum Rock (Hastings Co., with Sp. C. Curve, and Distribution Curves of Corundumand Magnetite. Solid line Coran6uvn Rock. oborr lieavy das^. Specific Gravities. Dashed iioe Corund(jm. Dasbed-doifed liDe Magnetite.
Size: 2903px × 861px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorontariolegislativeass, bookcentury1900, bookdecade1900
