Manual of CyanidationMcGraw-Hill, 1920 - 277 σελίδες |
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Σελίδα viii
... loss of the active reagent KCN . The alkali most commonly used is lime , both because of its cheapness , and also because some lime is needed in any case to coagulate and settle the separated slime prepara- tory to the slime treatment ...
... loss of the active reagent KCN . The alkali most commonly used is lime , both because of its cheapness , and also because some lime is needed in any case to coagulate and settle the separated slime prepara- tory to the slime treatment ...
Σελίδα ix
... Loss . 9 Use of Lead Salts . 14 Premature Precipitation . 14 Relative Dissolving Efficiency of Sodium and Potassium Cyanide . 15 CHAPTER II TESTING AND ANALYSIS OF SOLUTIONS General Remarks . . 19 Free Cyanide Determination . 20 Total ...
... Loss . 9 Use of Lead Salts . 14 Premature Precipitation . 14 Relative Dissolving Efficiency of Sodium and Potassium Cyanide . 15 CHAPTER II TESTING AND ANALYSIS OF SOLUTIONS General Remarks . . 19 Free Cyanide Determination . 20 Total ...
Σελίδα 9
... loss of cyanide without any corre- sponding gain in extraction of the precious metals . The mechan- ical loss in residues will obviously be greater with strong solutions than with weak , so that from every point of view it is important ...
... loss of cyanide without any corre- sponding gain in extraction of the precious metals . The mechan- ical loss in residues will obviously be greater with strong solutions than with weak , so that from every point of view it is important ...
Σελίδα 10
... loss of cyanide from this cause may be considerable . 2. Loss in Zinc Precipitation . - In precipitating the silver from the silver - potassium - cyanide combination by means of zinc , not only is the combined cyanide not liberated ...
... loss of cyanide from this cause may be considerable . 2. Loss in Zinc Precipitation . - In precipitating the silver from the silver - potassium - cyanide combination by means of zinc , not only is the combined cyanide not liberated ...
Σελίδα 11
... loss of cyanide in the form of HCN demonstrated by covering the tops of the tanks , drawing the gas off by suction , and passing it into a solution of caustic soda , thus recovering a large proportion of the cyanide lost in treat- ment ...
... loss of cyanide in the form of HCN demonstrated by covering the tops of the tanks , drawing the gas off by suction , and passing it into a solution of caustic soda , thus recovering a large proportion of the cyanide lost in treat- ment ...
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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.