Highantimony lead bullion containing about 25 by weight antimony was used in the experiments which was selfprepared for simplicity and convenience When pure lead was smelted in melting furnace a small amount of leadantimony alloy Sbcontent 20 was put into the molten lead to increase the antimony content to about 25 wt... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
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In accordance with the field visit of working site and technical guidance, Fote Machinery introduced 3 stages crushing process for our customer.
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Related Equipments: two PE600×900 jaw crushers, two impact crushers, two cone crushers, two sand makers and three circular vibrating screens.
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The 200t/h granite crushing plant in Russia uses HPT220 hydraulic cone crusher as the core crushing equipment
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This micronized line for quicklime is in Teheran, Iran. The whole line includes pe250x400 jaw crusher, electromagnetic vibrating feeder, HGM175 grinding mill, hoist, electric control cabinet, packaging machine, pulse duster, etc., with the features of hig
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Manganese Ore Crushing Project in South Africa is composed of coarse mobile crushing station including GZD1300×4900 vibrating feeder and PEW860 euro jaw crusher, medium and fine mobile crushing and screening station including HP300 cone crusher and 3YK186
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River Gravel Mobile Crushing production line in Kenya is composed of FTM938E69 mobile coarse crushing station, FTM935F1214L（4YK1860） medium and fine mobile crushing and screening station.
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Lead processing Lead processing Refining To remove and recover remaining impurities from lead bullion either pyrometallurgical or electrolytic refining is used the choice between the two methods is dictated by the amount of bismuth that must be eliminated from the bullion and by the availability and cost of energy The Parkes zincdesilvering process is the most widely used
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The temperature of reverberatory blowing and antimony white’s reduction smelting is about 950 °C and 1100 °C respectively which means high energy consumption The lowpurity lead bullion contains only 75–80 by weight lead leading to the poor efficiency of electrolytic refining
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Jan 10 1984 · An improved process for refining lead bullion containing antimony in an amount in excess of about 05 by weight comprising the following steps a heating said lead bullion to a temperature of approximately 25° F 14° C above its melting temperature to form a molten bullion and discontinuing said heat source
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Refining dross is the result of lead refining process where impurities like copper tellurium arsenicantimonytin silver zinc and bismuth in sequence from lead bullion There are many types and composition of each type of dross varies and is subjected to specific refining
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Lead processing Lead processing The metal and its alloys Refined lead usually has a purity of 99 to 9999 percent but lead of 99999 percent purity known as “five nines” is becoming more common commercially At these levels the grades of lead differ mostly by their bismuth content With modern smelting and refining techniques it is possible to reach these high levels of purity
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– High temperatures 1260°C – Reducing agents – Exclusion of oxygen Process Overview cont REFINING KETTLES EMISSIONS LEAD SOFT SPECIALTY LEAD ANTIMONIAL LEAD ALLOYS REFINING REAGENTS SLAG DROSS OXIDE PAINT PURCHASED Antimony Lead Selenium Cadmium Osmium Arsenic Mercury 1613 1210 1054 904 849 721 660 627 318 214 41 32 14 CrO
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other metal sulfides which rises to the top and speiss high in arsenic and antimony content are both typically forwarded to copper smelters The third and final phase in the processing of lead ore to metallurgical lead the refining of the bullion in cast iron kettles occurs in 5 steps 1 removal of antimony tin and arsenic 2 removal
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Finally all traces of antimony and zinc are removed by mixing sodium hydroxide into molten lead at 760 K its melting point is 600 K The resulting sodium zincate and antimonate form a skin on the surface of the molten lead which is skimmed off The refined lead is of 9999 purity
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• Highpurity antimony is produced by electrolytic refining of SY0 antimony in potassiumalkaline solutions subsequent flushing smelting and zone refining of the received cathode metal It is used in semiconductor industry as specialpurpose solder alloys
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