Recovery,molybdenum,Molybdenum business, insurance Recovery of molybdenum

As we all know to live in this world we have to perform some activity by which we can earn money. There are many activities by which we can earn money and meet the standards to live in this society. And from one of them is franchise.  Franc Small offices have unique needs, and thatincludes document shredding. Designed with the smaller business inmind, the Dahle 20314 is a cross-cut shredder that offers Level 3security and brings you into compliance with federal regulations. The

Molybdenum-containing waste materials are mainly themixed waste molybdenum compounds, molybdenum powder, molybdenum sheet,molybdenum alloys, molybdenum-containing waste catalyst and so on. Recycledmolybdenum in total production molybdenum accounts for a large proportion. Accordingto metal powdersupplier, since molybdenum waste has awide variety, recycled in different ways, often dominated by fire method, wetmethod is complementary. Common methods of regeneration molybdenum havesublimation method, zinc melting method, oxidizing roasting - acid leaching,sodium carbonate roasting - leaching and alkaline leaching. These methods onlyapply to recycle certain waste molybdenum - containing miscellaneous materials.Specific hybrid materials molybdenum - containing waste should be according totheir specific ingredients and plant specific conditions select or developapplicable regenerative recovery methods. Sublimationmethod is based on molybdenum metal at a certain temperature, can be oxidizedinto molybdenum trioxide and sublimation trap recycling methods (see molybdenumcompound preparation), the recovery rate was up to 98%. Sublimation process wasconducted in sublimation furnace, bag filter, exhaust fan and other componentsequipments, can be heated by electricity, gas, waste oil, coke and other heatsource. Since molybdenum oxide is an exothermic reaction, once it reaches theintense sublimation temperature 923 ~ 1073K, molybdenum trioxide sublimationcan be automatically proceeding. Sublimation obtained molybdenum trioxide byconventional return. This method suitable for the regeneration recycling ofwaste molybdenum powder, molybdenum ingot, molybdenumsheet, molybdenum wire, also applies to molybdenum rhenium alloys, high-speedsteel grinding waste recycling. Zincmelting method is suitable for the regeneration of cemented carbide and superalloy scrap recycling. Scrap cemented carbide and carbon and zinc mixed andheated to 1123 ~ 1273K, generating molten cobalt, nickel and zinc alloys.Release alloy and distilled zinc, and dissolved the distillation residue inmineral acid to recycle nickel and cobalt. The output of smelting zinc alloy byheating distillation zinc, and then calcined to volatilize molybdenum, withammonia leaching tungsten in roasting residue. Cobalt, molybdenum, tungstenrecoveries were 97%, 96.2%, 98.4%. Oxidizingroasting - acid leaching method suitable for molybdenum-containing wastecatalyst (typically containing MoO38% ~ 10%) recycled. Molybdenum-containingwaste catalyst at 773 ~ 823K temperature calcine to remove carbon, hydrocarbonsand sulfur, calcined product through pulverized in 473K temperature sulfuricacid solution leaching, filtered to make the potassium alum precipitate andcobalt-nickel-aluminum-vanadium-molybdenum leaching liquid separation. Thefiltrate add NaOH to make nickel and cobalt separated in hydroxideprecipitated, after the liquid-solid separated, recover nickel, cobalt from thesolid product. Molybdenum and vanadium in the form of Na2MoO4 and Na2VO3 remainin solution, then adding ammonium salt to make the vanadium in (NH4) 2VO3precipitated, after separated, then by known conventional methods recoveredvanadium and molybdenum. Cobalt and molybdenum recoveries were 97% and 95%. Sodiumcarbonate roasting- leaching method is suitable for molybdenum-containingcatalyst waste regeneration recycling. Molybdenum-containing spent catalystadds sodium carbonate and coke, roasting in 1073K temperature, generate sodiummolybdate, sodium vanadate, cobalt and nickel oxide. Due to spent catalystcontains 5% to 10% sulfur, and about 20% carbon, calcination by sulfur andcarbon combustion can be self-heating. Calcination can be conducted in a rotarykiln or vertical furnace. Crushed the calcined product to a grain -0.075mm, then use 333K water leachingtwice, sodium molybdate and sodium vanadate into solution, the leaching rate ofmolybdenum and vanadium is 97% to 98%, cobalt, nickel is few leaching and leftin the leaching residue. Alkalileaching method is suitable for molybdenum-containing nickel waste catalystregeneration recycling. Molybdenum-containing nickel waste catalyst bycrushing, alkali, high temperature melting, generates sodium molybdate andnickel oxide, sodium aluminate, and then pressurizing the flooding. In theleaching process, molybdenum and aluminum respectively in the form of sodiummolybdate and sodium aluminate into the solution, while nickel in the form of nickeloxide left in the alkaline leaching residue. With sulfuric acid leaching nickelfrom alkaline leaching slag, after purification, preparing nickel sulfate. Theleaching rates of molybdenum, aluminum, nickel were 96.9%, 86.7% and 90.1%. ArticleSource:http://www.mhcmp.com