BulletinU.S. Government Printing Office, 1919 |
Dentro del libro
Resultados 6-10 de 100
Página 59
... pass 80 mesh . The full - line curves in figure 3 give the recoveries with the acetic acid solvents , and the dotted lines , those for sul- phuric acid and acid brine solvents , respectively . It can be seen that much more zinc is ...
... pass 80 mesh . The full - line curves in figure 3 give the recoveries with the acetic acid solvents , and the dotted lines , those for sul- phuric acid and acid brine solvents , respectively . It can be seen that much more zinc is ...
Página 61
... the roasting of sphalerite . The material ground to pass a 100 - ROASTING ZINC SULPHIDE ORES . 61 Effects of fineness of grinding Curves showing effects of size of ore on speed of roasting, Bullion Coalition No 5 sample.
... the roasting of sphalerite . The material ground to pass a 100 - ROASTING ZINC SULPHIDE ORES . 61 Effects of fineness of grinding Curves showing effects of size of ore on speed of roasting, Bullion Coalition No 5 sample.
Página 62
sphalerite . The material ground to pass a 100 - mesh screen showed the gradual formation of ferrite during the last eight hours of the roast . This seems reasonable , as the ore is more finely ground and there is a better chance for ...
sphalerite . The material ground to pass a 100 - mesh screen showed the gradual formation of ferrite during the last eight hours of the roast . This seems reasonable , as the ore is more finely ground and there is a better chance for ...
Página 64
... pass a 60 - mesh sieve , in order that all lumps might be broken . Five leaches were made on the calcines of each roast , as follows : ( 1 ) Using the theoretical amount of sulphuric acid needed to dissolve the zinc and agitating the ...
... pass a 60 - mesh sieve , in order that all lumps might be broken . Five leaches were made on the calcines of each roast , as follows : ( 1 ) Using the theoretical amount of sulphuric acid needed to dissolve the zinc and agitating the ...
Página 72
... pass about 60 mesh , practically all of the zinc can be roasted to a form soluble in sulphuric acid in two to five hours at 750 ° C. , the time of roasting depending on the depth of ore bed used . Where zinc and iron are intimately ...
... pass about 60 mesh , practically all of the zinc can be roasted to a form soluble in sulphuric acid in two to five hours at 750 ° C. , the time of roasting depending on the depth of ore bed used . Where zinc and iron are intimately ...
Otras ediciones - Ver todas
Términos y frases comunes
Act entitled action AMENDATORY ACT amended amount appointed approved April 18 brass Bureau of Mines cage Carterville cause cent zinc certificate charge chloride Coal & Coke coal mines compensation Consolidated Coal copper court Curtiss Statutes damages dangerous condition dollars Donk Bros duty electric furnace electrodes Eminent domain employee enacted escapement shaft examination explosive failure February 13 feet filed fire force July furnish heat hereby Illinois Industrial Board ingot injury inspection iron June June 16 June 21 Kellyville Coal kilowatt-hours La Salle County Laws leaching lead lease liable manager melting miner Mining Board Mining operations owner pipe pounds poured power consumption props purpose recovered recovery Revised Statutes roasting rocking roof safety saline solution spelter Spring Valley Coal Starr & Curtiss sulphate sulphuric acid tank temperature tests therein thereof tion weight zinc chloride Zinc concentrate zinc oxide zinc sulphide
Pasajes populares
Página 401 - Where the injury for which compensation is payable under this Act was caused under circumstances creating a legal liability in some person other than the employer...
Página 396 - ... in the case of partial incapacity the weekly payment shall in no case exceed the difference between the amount of the average weekly earnings of the workman before the accident and the average weekly amount which he is earning or is able to earn in some suitable employment or business after the accident...
Página 400 - No proceedings for compensation under this Act shall be maintained unless notice of the accident has been given to the employer as soon as practicable after the happening thereof...
Página 452 - Loss of both hands, or both arms, or both feet, or both legs, or both eyes, or of any two thereof shall, in the absence of conclusive proof to the contrary, constitute permanent total disability. In all other cases permanent total disability shall be determined in accordance with the facts.
Página 209 - For any injury to person or property, occasioned by any willful violations of this act or willful failure to comply with any of its provisions, a right of action shall accrue to the party injured for any direct damages sustained thereby...
Página 407 - Provided, however, That in no case shall the amount received for more than one finger exceed the amount provided in this schedule for the loss of a hand.
Página 144 - Illinois, before any justice of the peace of such county, and such fine, when collected, shall be paid into the county treasury for the use of the county in which any such accident may have occurred.
Página 352 - I do solemnly swear (or affirm, as the case may be) that I will support the Constitution of the United States, and the Constitution of the State of Illinois, and that I will faithfully discharge the duties of the office of according to the best of my ability.
Página 402 - ... persons herein required to do them, or any violation of any of the provisions or requirements hereof, or any attempt to obstruct or interfere with any inspector in the discharge of the duties herein imposed upon him, or any refusal to comply with the...
Página 385 - ... all laws and parts of laws inconsistent with this act are hereby repealed...