Manual of CyanidationMcGraw-Hill, 1920 - 277 σελίδες |
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Σελίδα 1
... removed out of the sphere of action . The potassium sulphide , however , happens to be very sensitive to oxidation so that a change rapidly takes place , probably in two directions , ( 1 ) K , S + KCN +0+ H2O = KCNS + 2KOH K , S + KCN ...
... removed out of the sphere of action . The potassium sulphide , however , happens to be very sensitive to oxidation so that a change rapidly takes place , probably in two directions , ( 1 ) K , S + KCN +0+ H2O = KCNS + 2KOH K , S + KCN ...
Σελίδα 2
... removed out of the sphere of action either by oxida- tion or precipitation as an insoluble sulphide the equilibrium is 2 MANUAL OF CYANIDATION Action of Cyanide on Gold and Silver 123 Reaction of Cyanide with Silver Sulphide.
... removed out of the sphere of action either by oxida- tion or precipitation as an insoluble sulphide the equilibrium is 2 MANUAL OF CYANIDATION Action of Cyanide on Gold and Silver 123 Reaction of Cyanide with Silver Sulphide.
Σελίδα 14
... removal of the sulphur as lead sulphide , but Caldecott1 has found that PbS is acted on by cyanide with formation of KCNS , which probably accounts for the fact that the amount of KCNS usually present in a work- ing solution does not ...
... removal of the sulphur as lead sulphide , but Caldecott1 has found that PbS is acted on by cyanide with formation of KCNS , which probably accounts for the fact that the amount of KCNS usually present in a work- ing solution does not ...
Σελίδα 30
... removed by shaking up some of the solution with a little aluminium dust and filtering , as the black precipitate of silver will mask the white sulphide of zinc . To determine the amount of zinc , the method recommended by Gerard ...
... removed by shaking up some of the solution with a little aluminium dust and filtering , as the black precipitate of silver will mask the white sulphide of zinc . To determine the amount of zinc , the method recommended by Gerard ...
Σελίδα 31
... removed . The reagents needed are aluminium dust , commercially known as aluminium bronze powder , crystals of neutral potassium or sodium oxalate , sodium sulphide solution , a decinormal solution of iodine and a decinormal solution of ...
... removed . The reagents needed are aluminium dust , commercially known as aluminium bronze powder , crystals of neutral potassium or sodium oxalate , sodium sulphide solution , a decinormal solution of iodine and a decinormal solution of ...
Άλλες εκδόσεις - Προβολή όλων
MANUAL OF CYANIDATION E. M. (Edward Montague) 1871? Hamilton Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acid added agitation alkali aluminium amount antimony assay value Borax bottle bottom boxes BrCN brittle bullion cake carbonate caustic soda cent charcoal charge clean compartments concentrate containing copper cubic cupel cyanide consumption cyanide process cyanide solution cyanide strength decantation decinormal dilution discharge dissolved distilled water Dorr dry slime extraction ferrocyanide filter flask flux free cyanide gold and silver grams grinding inches iodine launder leaching lime litharge litre loss manganese melting mesh method mill moisture necessary Nipissing nitric acid obtained oxide oxygen Pachuca pass percolation pipe plant potassium pounds precious metal precipitation present pulp pump quantity removed residue sample sand screen sieve silver nitrate slag slime soda ash sodium carbonate sodium sulphide solu soluble specific gravity standard stock solution sufficient sulphate sulphide TABLE tank Thickener tion titration tonnage tons treated treatment usually wash weight writer zinc zinc dust сс сс сс
Δημοφιλή αποσπάσματα
Σελίδα 243 - Cl Cr Co Cb Cu Dy Er Eu F Gd Ga Ge Au Hf He Ho H In I Ir Fe Kr La Pb Li Lu Mg Mn Hg...
Σελίδα 244 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
Σελίδα 245 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 246 - MEASURES OF WEIGHT 10 milligrams (mg.) = 1 centigram eg. 10 centigrams =1 decigram dg. 10 decigrams =1 gram g. 10 grams =1 decagram Dg. 10 decagrams =1 hectogram Hg. 10 hectograms = 1 kilogram Kg.
Σελίδα 243 - Radium Rhodium Rubidium Ruthenium Samarium Scandium Selenium Silicon Silver Sodium Strontium Sulphur Tantalum Tellurium Terbium Thallium Thorium Thulium. . . Tin Titanium Tungsten Uranium Vanadium Xenon Ytterbium Yttrium Zinc Zirconium Symbol. Mo Nd Ne Ni Nt N Os O Pd p...
Σελίδα 245 - Troy Weight. 24 grains (gr.) - 1 pennyweight (dwt.) 20 pennyweights — 1 ounce (oz.) 12 ounces — 1 pound (1b.).
Σελίδα 245 - Dry Measure. — 2 pints = 1 quart; 8 quarts = 1 peck; 4 pecks = 1 bushel.
Σελίδα 238 - Administration of the antidote. If the patient is conscious, make him swallow the mixture at once, and lie down for a few minutes. If the patient is not conscious, place him on his back and pour the mixture down his throat in small quantities, if necessary pinching his nose in order to make him swallow.
Σελίδα 244 - ... sq. yds. = 1 sq. rod. 40 sq. rods — 1 sq. rood. 4 sq. roods = 1 acre. 640 acres = 1 sq. mile.
Σελίδα 238 - ... know how to use it should occasion at any time arise. The apparatus should never be allowed to be removed from its place, but always kept complete and ready for an emergency. It is advisable to keep it in duplicate, in prominently marked positions in the works.