摘要:
Die feuchten Erze (1) werden direkten Kontakt mit heißem, trokenem Endgas (3) aus einer Schwefelsäurekontaktanlage (13) getrocknet (2), die getrockneten Erze (8) werden abgeröstet und verhüttet (9), die S0 2 -haltigen Röstgase (12) werden in der Kontaktanlage (13) zu Schwefelsäure verarbeitet und die Endgase (15) der Kontaktanlage (13) werden mit überschüssiger Wärme aus der Kontaktanlage (13) aufgeheizt.
摘要:
The invention relates to a method for producing copper metal from copper concentrates without generating waste, which comprises: (a) oxidizing copper concentrate; (b) cleaning and cooling the gases; (c) feeding to a reduction reactor; (d) cleaning the gases; (e) discharging hot powders and calcines into water; (f) performing magnetic separation; (g) thickening and filtering the magnetic fraction; (h) floating silica and inert materials; (i) thickening and filtering the silica and inert materials; (j) thickening and filtering the final concentrate containing the copper metal and noble metals; (k) smelting the final concentrate of copper and noble metals; and (I) recirculating ground smelt slag to a roasting reactor.
摘要:
The present invention describes a process for treating a leaching residue generated in a leaching of a sulfur-containing metal concentrate. Therein, the leaching residueisfed into a reactor, wherein a fluidizing gas is injected into the reactor to form a fluidizedbed containing at least a portion of the leaching residue. So, the leaching residueis heated in the presence of inert particles to a temperature between 600 and 900 °C in an oxidizing atmosphere to produce calcined particles and SO2. At least 60 wt-% of the inert particles are removed from the fluidized bed while at least 60 wt-%of the calcined particles are removed together with a gas stream containing off-gases and the fluidizing gas.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen von Schwefeldioxid durch Röstung von Flotationskies in Wirbelschichtreaktoren, wobei der Flotationskies in Gegenwart von Eisen(III)-sulfat geröstet wird.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Schwefeldioxid durch Rösten von Schwefelkies in Wirbelbettreaktoren, Kühlung und gegebenenfalls Trocknung der Reaktionsgase, wobei der Schwefelkies in Form einer Suspension bestehend aus Flotationskies und Schwefelsäure in den Wirkbelreaktor eingebracht wird.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Schwefeldioxid durch thermische Spaltung von Metallsulfaten und gleichzeitige Röstung von sutfidi- schen Erzen in geeigneten Reaktoren, wobei die Metallsulfate gemeinsam mit den Metallsulfiden granuliert und anschließend in Form von Granalien in die Rektoren eingetragen werden.
摘要:
The present invention relates to an apparatus for removing volatile impurities such as mercury and selenium from a weak acid solution resulting from scrubbing gases created in the production of sulfuric acid by roasting of sulfide concentrates. The apparatus comprises a calcine filtering unit for removing calcine from the weak acid solution, a sodium sulfide mixing unit for precipitating mercury from the weak acid solution, a sodium dithionite mixing unit for precipitating selenium from the weak acid solution, and a mercury-selenium filtering unit for filtering the precipitated mercury and selenium from the weak acid solution. The present invention further relates to a treatment plant utilizing such an apparatus, a process for removing volatile impurities from a weak acid solution, and a selenium cake obtained by utilizing the present invention.
摘要:
The present invention relates to an apparatus for removing volatile impurities such as mercury and selenium from a weak acid solution resulting from scrubbing gases created in the production of sulfuric acid by roasting of sulfide concentrates. The apparatus comprises a calcine filtering unit for removing calcine from the weak acid solution, a sodium sulfide mixing unit for precipitating mercury from the weak acid solution, a sodium dithionite mixing unit for precipitating selenium from the weak acid solution, and a mercury-selenium filtering unit for filtering the precipitated mercury and selenium from the weak acid solution. The present invention further relates to a treatment plant utilizing such an apparatus, a process for removing volatile impurities from a weak acid solution, and a selenium cake obtained by utilizing the present invention.