Abstract:
Described herein is a method of melting a bulk metallic glass (BMG) feedstock, comprising: heating at least a portion of the BMG feedstock to temperatures slightly below a solidus temperature of the BMG, wherein the portion remains a solid at the temperatures slightly below the solidus temperature and wherein a temperature distribution of the portion is essentially uniform; heating the portion of the BMG feedstock to temperatures above a liquidus point.
Abstract:
The present disclosure relates to a hopper and a reduction device using the same. The hopper and the reduction device can be used to refining a material using thermal reduction reaction. The reduction device has a body defining cavity and a hopper, wherein the hopper is slidably disposed in the cavity.
Abstract:
A reduction retort (11) for use in a vacuum smelting reduction furnace, including: a reducing portion (12) made of silicon carbide-based material; a condenser (13) disposed at one end of the reducing portion; an inlet closure (14) hermetically-connected to the condenser (13); and an outlet closure (15) disposed at the other end of the reducing portion (12), wherein the reduction retort (11) is disposed at an angle in the reduction furnace, with the end of the reduction retort (11) with the condenser (1 3) facing upward and the end of the reduction retort (11) with the outlet closure (15) facing downward. The reduction retort can save discharging time of spent residue, increase material load, enhance output, and improve heat utilization rate. The invention has a significantly prolonged service life in comparison to the conventional reduction retort made of nickel-chrome-steel alloy.
Abstract:
A 99.99% pure indium feed is charged into crucible 8 and heated to 1250° C. by upper heater 6 in a vacuum atmosphere at 1×10−4 Torr, whereupon indium evaporates, condenses on the inner surfaces of inner tube 3 and drips to be recovered into liquid reservoir 9 in the lower part of tubular member 11 whereas impurity elements having lower vapor pressure than indium stay within crucible 8. The recovered indium mass in liquid reservoir 9 is heated to 1100° C. by lower heater 7 and the resulting vapors of impurity elements having higher vapor pressure than indium pass through diffuser plates 12 in the upper part of tubular member 11 to be discharged from the system whereas the indium vapor recondenses upon contact with diffuser plates 12 and returns to liquid reservoir 9, yielding 99.9999% pure indium while preventing the loss of indium.
Abstract:
A purification apparatus including a vertical stack of a feed heating zone having a feed crucible 1, a condensation zone having a plurality of condensation vapor passage plates 5, a solidification zone having a solidification crucible 2 and an entrapment/solidification zone having a plurality of entrapment/solidification vapor passage plates 7.