Chloridizing roasting
WebThe chlorination process, introduced in Europe in 1843, roasted ore with chlorides, followed by a hot brine leach and subsequent precipitation of the silver on copper. In 1887 it was discovered that gold and silver can be recovered by sodium cyanide, and this process displaced the dangerous chlorination process. WebRoasting of Chalcocite (Cu 2 S) to obtain Copper Oxide (Cu 2 O). 2Cu 2 S + 3O 2 → 2Cu 2 O + 2SO 2. Conversion of metal compounds to chlorides through Chloridizing Roasting. 2NaCl + MS + 2O 2 → Na 2 SO 4 + MCl, 4NaCl + 2MO + S 2 + 3O 2 → 2Na 2 SO 4 + 2MCl 2. Controlled roasting of a non-magnetic ore like haematite to convert it into ...
Chloridizing roasting
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WebYAN Y F. Thermodynamic analysis of roasting process of gold concentrate containing arsenic, antimony and iron sulfide[J]. Gold, 1986, 7(3): 27-32. of China[J]. Geology of Chemical Minerals, 2024, 40(1): ... DING J, YE S F. Research on gold recovery from residue of roasting-cyaniding process by chloridizing roast[J]. WebA variety of chloridizing agents were admixed with EAF dust to promote the selective removal of lead and cadmium by the formation of volatile metal chlorides. The results of the experimentation firmly establish that selective chloridizing roasting is a technically feasible means of eliminating lead and cadmium from EAF dust.
WebThe chloridizing of stibnite with calcium chloride was studied as an alternative to volatilize antimony from impure copper concentrates because the vapor pressure of antimony chloride is higher than the vapor pressures of antimony oxide or sulfide at low temperatures. ... the chloridizing roasting of Sb2S3 using CaCl2–O2 was investigated to ... WebFeb 8, 2024 · Chloridizing roasting of bismuthinite (Bi 2 S 3) with NaCl–O 2 has been studied to remove the impurity Bi by volatilization from copper concentrates that contain bismuthinite. The study was conducted using mixtures of Bi 2 S 3 and NaCl in a horizontal furnace and TGA apparatus.
WebThis paper describes a chloridizing roasting process applied to two types of nickel and copper-bearing sulfide concentrates. One was copper rich and the other nickel rich. The … WebThe optimum conditions for chloridizing roasting from the high copper pyrite cinder were identified as a dosage of CaCl2addition of 4.8 wt%, a roasting time of 19.28 min and a roasting temperature of 1151.51 °C; under such conditions, a copper volatile ratio of 97.82% was achieved.
WebDec 15, 2024 · The chloridizing agents used for chloride roasting include gaseous Cl 2 and HCl, and solid MgCl 2 •6H 2 O, NaCl, AlCl 3 •6H 2 O, and NH 4 Cl. However, there are few investigations about the chlorination–volatilization of cobalt at present.
The following describe different forms of roasting: Oxidizing roasting, the most commonly practiced roasting process, involves heating the ore in excess of air or oxygen, to burn out or replace the impurity element, generally sulfur, partly or completely by oxygen. For sulfide roasting, the general reaction can be given by: greenlite thermostat reviewWebThe chlorination process, introduced in Europe in 1843, roasted ore with chlorides, followed by a hot brine leach and subsequent precipitation of the silver on copper. In … greenlite wireless credit card readerWebApr 1, 2024 · Chlorination roasting technology is a smelting process that uses the principle of chlorination metallurgy to recover valuable metals from solid waste. It has the … green lithium refininggreen lithium stockWebDec 15, 2024 · In regards to cobalt recovery, many works have concentrated on chloride roasting as the pretreatment to convert cobalt compounds into soluble chloride, followed … flying guppie picsWebChlorinators are used for roasting oxides to chlorides. They are tall, circular steel shells lined with refractory brick to prevent chlorine attack on the steel. The top of each chlorinator has a sealed hopper for periodic feed … flying guns world war iiWebApr 1, 2024 · Chlorination roasting technology is a method to realize heavy metal recovery and environmental protection at the same time, and it has many … flying gurnard australia