feeding to the flash smelting furnace. This energy is saved in the furnace operations and also results in smaller off-gas streams. The concentrate is then fed into a flash smelting furnace (FSF), where it is smelted and oxidized to produce high-grade matte, slag, and sulphur dioxide (SO2)-containing off-gas.
The dominant method for copper production, flash smelting, has been extensively investigated, but the settler part of the furnace containing molten high temperature melts termed slag and matte ...
English: Nickel or copper flash smelting furnace from Inco. Français : Four de fusion flash, pour le nickel ou le cuivre, d'Inco. Date: 7 October 2015: Source: Own work: Author: Borvan53: This file is translated using SVG
70 years of flash smelting - shaping the industry. This year marks the 70th anniversary of flash smelting. The technology was operated for the first time on an industrial scale on April 20th, 1949 at the Harjavalta copper smelter in Finland. The go-ahead for construction of the pilot plant at Harjavalta was given in 1946 and the first ...
: Copper flash smelting is a relatively new process which has been in operation since the 70's and is a pyrometallurgical process used in conjunction with copper sulphide concentrates. The main key facilitators produced by the process include controlled oxidation of Fe and S, a large evolution of heat and the effective melting of solids.
Figure 6-2.—Early Smelting Technology Charcoal ore flux m The Egyptian copper smelting furnace was filled with a mixture of copper ore, charcoal and iron ore to act as a flux. It was blown for several hours by foot or hand bellows. By the end of the smelt the copper …
The flash smelting process has been used in copper industry for a number of years and has replaced some conventional copper smelting processes in Chile. The high copper content in the slag in this process, require a further cleaning in an electric furnace. Also, the converter
Copper Smelting Flash Furnace Refractory. Flash smelting is one of the most advanced copper ore smelting technique. During flash smelting, dry sulfurized fine ore powder, flux, oxygen or oxygen rich air or preheated air are injected into high temperature reaction tower hearth, the ore powder quickly realizes desulfurization, smelting, slag forming and so on.
Outokumpu flash smelting is a closed process which can achieve up to 99% capture of the sulphur-rich gases from the smelting furnace for the production of sulphuric acid. The technology was first introduced at Outokumpu's Harjavalta smelter in Finland in the late 1940's.
The smelting furnaces used in the process are comprised of single burners or burner field systems for auxiliary firing operated with air, oxygen-enriched air or oxygen as an oxidising agent. In the oxyfuel process, the combustion processes are carried out by means of an oxygen burner (oxyfuel burner) which is operated with pure oxygen or oxygen ...
the flash furnace process, and as a consequence of which, the flash furnaces were further introduced into such smelters as Kosaka, Saganoseki, Toyo and Tamano. Today, the flash furnace produces about seventy percent of copper in Japan. Worldwide, twenty three copper smelting flash furnaces are in operation at twenty two smelters. 3.
Abstract. In March 2012 a combined BHP Billiton and Hatch team embarked on a program to improve the concentrate burner efficiency of BHP Billiton's Olympic Dam copper flash smelting furnace. A multi-faceted approach including an analysis of the furnace using operational knowledge and first principles engineering led to the design and supply ...
02 Flash smelting furnace The copper concentrates are fed through the flash smelting furnace with oxygen-enriched air. In the furnace, the concentrates are instantly oxidized, after which they melt and separate by their own reaction heat into copper matte with a grade of 65% and slag consisting of iron oxide, silica, and other compounds.
Copper smelting with the Outokumpu flash smelting process generates significant amounts of SO 2-rich off-gas and flue dust. From the smelting unit, gases with a dust load are directed into a heat recovery boiler (also known as a waste heat boiler). In the radiation section temperature decreases, sulphates become thermodynamically stable,
Recovery of Iron and Copper from Copper Smelting Furnace Slags by Carbon Injection. Jack I. Paige — 1982 in Carbon . Author : Jack I. Paige File Size : 76.12 Format : PDF, ePub, Mobi Download : 729 Read : 1200 .
The products of flash furnaces are matte of 45 to 65 percent copper, molten slag containing iron oxides plus gangue and flux oxides, and offgas. The slag typically contains as much as two percent copper. This slag can be recycled to the flash furnace, or its copper content can be recovered in a slag cleaning furnace, often electric. The flash ...
smelting performance, a series of simulation study of the copper flash smelting process has been undertaken. Table 5 shows the partial operation parameter of the flash smelting furnace and simulation results.In table 4, the operation parameter 1 is the real condition used in the Jinlong flash smelting furnace before production enhance.
1 Flash Smelting 1.1 Products 1.2 Raw Materials 1.3 Chemical Reactions 1.4 Impurity Behavior 1.5 Industrial Flash Furnaces and Their Operation 1.6 Recent Trends in Flash Smelting 1.7 The Competitive Position of Flash Smelting 1.8 Summary Suggested Reading References Problems 2 Outokumpu Flash Smelting 2.1 The Outokumpu Furnace 2.2 Peripheral ...
flash smelting. n. (Metallurgy) a smelting process for sulphur-containing ores in which the dried and powdered ore, mixed with oxygen, is ignited on discharge from a nozzle, melts, and drops to the bottom of a settling chamber. Sulphur is released mainly in its solid form, thus reducing atmospheric pollution.
AN INTRODUCTION TO OUTOTEC FLASH SMELTING With flexibility, low energy consumption, high sulfur capture, and excellent economy of scale, Outotec Flash Smelting technology is the world's leading method for copper and nickel smelting. More than half of the world's primary copper and nickel is produced using Outotec's proprietary process.
ABSTRACT. In March 2012 a combined BHP Billiton and Hatch team embarked on a program to improve the. concentrate burner efficiency of BHP Billiton's Olympic Dam copper flash smelting furnace. A ...
Minerals Engineering, Vol. 2, No. 4, pp. 489-500, 1989 0892-6875/89 $3.00 + 00 Printed in Great Britain 1989 Pergamon Press plc ENERGY BALANCE AND OPERATION EQUATIONS OF A COPPER FLASH SMELTING FURNACE BASED ON THE SUPERPOSITION PRINCIPLE T. KOSKINENs and H. TORVELA~ Harjavalta Works of Outokumpu Oy, Harjavalta, Finland …
The original flash smelting furnace maximum design capacity was 150 tonnes per hour of total charge (not including recycled dust) based on an average concentrate grade of 26.8%. The Smelter now operates routinely at 240 tonnes per hour of feed with periods in excess of this tonnage.
flash smelting (Ahokainen et al 2006), model development (or improvement) is not the focus of the work reported here. It is instead the practical application of a CFD model to a real operating furnace that is of primary interest. A reasonably comprehensive CFD model of a copper flash smelting furnace has been developed based on commercial
enthalpy entering the flash furnace in the preheated air. . ..... 103 7.9 Effect of smelting mode on flash furnace off—gas mass. ..... 104 7.10 Effect of matte grade on mass of dust recycled to the flash furnace. ..... 105 8.1 Energy and cost equations and inequalities. 118 9.1 Conceptual presentation of the
The advantages of flash smelting over roasting/electric furnace melting are that flash smelting: (1) requires much less energy than electric smelting and (2) avoids the electric furnace's emission of weak SO 2 gas [ 31 ]. It is also a high production rate process, perfectly matched to the 50–100-μm particles in froth flotation concentrates.
A method for operating a waste heat boiler in a flash-smelting furnace of copper flash-smelting works, wherein nitrogen gas and air are blown into the waste heat boiler in the flash-smelting furnace, the temperature at the outlet of a waste heat boiler radiation section of the flash-smelting furnace is controlled to be not more than 600° C ...
A copper flash smelting process in which part of a sulfidic copper feed is roasted in the presence of a calcareous SO 2 scavenger to produce a calcine containing calcium sulfate and an oxidic copper product, the calcine is mixed with additional feed and the mixture is flash smelted to provide a metallic product and a calcareous slag.
Flash Smelting Process. Process Flow Description: Concentrates and other copper bearing material are blended and conveyed from two separate areas of the plant to three 464 ton capacity wet charge bins located above the rotary dryer. Flash furnace silica flux is conveyed to a 250 ton capacity fine flux bin located adjacent to the wet charge bins.
Flash furnace smelting combines the operations of roasting and smelting to produce a high-grade copper matte from concentrates and flux. In flash smelting, dried ore concentrates and finely ground fluxes are injected together with oxygen and preheated air (or a mixture of both), into a furnace maintained at approximately 1000°C (1830°F).