The invention provides a furnace-roof feeding device of an antimony smelting and volatilizing smelting blast furnace, comprising a material storage pot, wherein the material storage pot is arranged on a water tank at a furnace roof of the blast furnace; the cross section of the material storage pot is oblong-shaped; the upper end of the material …Web
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The invention relates to a melting method of the antimony blast furnace adopting oxygen-rich air. The melting method is characterized in that the oxygen produced by an air separation oxygen manufacture equipment or a liquid oxygen vaporizing device is transmitted into an air pipe at the front end or the back end of a blast fan through a …Web
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25% antimony are volatilized to antimony trioxide, 25-40% antim ony ores are smelted in a blast furnace, and 45-60% antimony ores are treated by liquation or iron precipitation. A description ofWeb
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Blast furnace smelting: Intermediate grades of oxide or sulfide or mixed ores, liquation residues, mattes, rich slags, and briquetted fines or flue dusts are processed in water-jacketed blast furnaces at 1300–1400 °C. Theoretically, this process is illustrated in Eqs. (7), (8). In general, the same blast-furnace practice used for lead is ...Web
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The thick refining of antimony at present the most common employing be blast furnace, coking coal and antimony ore add burner hearth from furnace roof, at low column, the thin bed of material, high coke yield, realize the voloxidation of stibnite concentrate in the blast furnace in hot-top, the slag making of high price …Web
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A blast of air oxidizes any remaining antimony or arsenic, both of which harden lead (hence the term softening furnace), and these are skimmed off to be recovered later. After softening, the lead goes to desilvering kettles, where small quantities (less than 1 percent by weight) of zinc are added.Web
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The phase transformation mechanism of antimony sulfide in the oxygen-enriched smelting system was investigated. The standard Gibbs free energy change (ΔG^θ) of reactions in the smelting system at 100 ~ 1400°C were calculated, indicating that the reaction between Sb_2S_3 and oxygen was liable to occur first, and that the high-valent …Web
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In the case of slags produced from blast-furnace practice, smelting similar materials, I have never found more than 0.015 per cent, of arsenic, and only traces of antimony. It is, therefore, probable that the elimination of these elements in blast-furnace practice is almost entirely due to volatilization.Web
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Antimony–gold concentrate is a refractory gold ore, and the direct cyanide leaching efficiency is very low [].For antimony–gold concentrate with high antimony content (Sb > 30%), the volatilization melting of blast furnace and reduction melting of reverberation furnace is generally adopted at present, and the gold is finally enriched in noble …Web
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Solidification and stabilization of harmful elements in antimony tailings and synergistic utilization of multiple solid wastes. Author links open overlay panel Fenghui Wu a b ... Researchers have mainly used blast furnace slag [[7], [8], [9]], biochar [10], alkali-activated clay [11], fly ash silica modification [12], sodium hydroxide inspired ...Web
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Reverberatory smelting furnaces are used to produce a semi soft lead product that typically contains 3 to 4 percent antimony. Blast furnaces produce hard or antimonial lead containing about 10 percent antimony. Rotary kiln furnaces are occasionally used for smelting in the United States but can produce lead products similar to those produced in ...Web
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During the electric furnace melting process, crude antimony can be produced by reduction smelting. And then crude antimony can be further processed to produce Au-Sb alloys . The Melting products are crude antimony, antimony matte and slag. The crude antimony contains 92.1–97.4% Sb, 0.2–3.0% Fe, 0.04% Au.Web
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The typical blast furnace gas composition in volume is N 2 = 55.19%, CO = 20.78%, CO 2 = 21.27% and H 2 = 2.76% ( Hou et al., 2011 ). The water content is removed by demisters following the cleaning process. This gas is used for the furnace mills, in gas engines and for electricity and steam generation. Often, in the steel industry, blast ...Web
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A technique based on the use of a Cu-Zn concentrate for the improved removal of arsenic and antimony during the treatment of recycled lead-containing …Web
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Using of copper-zinc concentrates in the blast furnace process for recycling lead-containing materials achieves: (1) high copper extraction to matte; (2) high lead …Web
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The sulfide antimony ore is first volatilized and oxidized into antimony trioxide (Sb 2 O 3) in a blast furnace, and then Sb 2 O 3 is reduced to antimony metal in a …Web
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The conversion of this data to the amount of dissolution per unit mass at the various solid-liquid ratios (Figure 4 and Table 1) indicated that, during the static immersion, the release of antimony from the blast furnace slag increases gradually with the decrease of the ratio of solid to liquid.The maximum amount of antimony released at the end of …Web
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The current paper reviews the conventional pyrometallurgical processes and technologies that have been practiced for the treatment of antimony concentrates. The …Web
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gical smelting antimony are few7. The principle of the antimony oxygen-enriched smelting process is similar to that of the blast furnace, which is based on antimony sulfide being easily oxidized to Sb 2O 3 and volatilized into the gas phase.8–10 The oxygen-enriched smelting process solved the problem of SO 2 pollution in the traditional ...Web
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The invention provides a method for extracting antimony metal. The extraction method comprises the step of carrying out reduction smelting on the antimony oxide dust to obtain antimony metal, wherein the reduction smelting step is carried out in an electrothermal reduction device. The traditional reverberatory furnace reduction is replaced by an …Web
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the invention provides a method for recovering antimony from blast furnace slag, which comprises the steps of carrying out secondary oxidation recovery on waste slag, enabling the waste slag flowing out of a blast furnace to flow into a heat preservation device, introducing oxygen, carrying out secondary oxygen ash, and recovering volatile …Web
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The invention discloses a non-fore-bed blast furnace for smelting single antimony ore, which belongs to the technical field of smelting and comprises a furnace bottom 11, a furnace body 14, a furnace top 15 and a hearth 12. The furnace bottom 11, the hearth 12, the furnace body 14 and the furnace top 15 are sequentially stacked from bottom to top.Web
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The blast furnace is generally used for mixed sulfide and oxide ores, and for oxidized ores containing up to about 40% antimony; direct reduction is used for rich oxide ores. Some antimony ores are treated by leaching and electrowinning to recover the antimony .Web
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The utility model provides an antimony smelting blast furnace skip pit dust arrester installation, including setting up on skip pit inner wall, and be close to skip pit open-ended negative pressure mouth, the skip track about one side of skip pit is for supplying the skip, and one side is laid feed belt conveyor, and the opposite side is artifical charge door, the …Web
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The gooseneck structure of Antimony Making Blast Furnace that adopts technique scheme, original size remains unchanged, and increases gooseneck angle to 47 ° to 49 °, has reduced gooseneck bridging, has significantly reduced cleaning gooseneck labour intensity; Addition gooseneck slant range to being more than or equal to 1.5 …Web
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Activators Antimony Blast furnace slag Blended cements Brown discoloration Calcium sulphate Cement additives Cement color Cement microscopy Chemical analysis Chromates Clinker mineralogy Clinkerization Concrete Controlled release Cost reduction Cr(VI) analysis Diffusion Dosing point Drymix mortars Early strengths Encapsulation Ettringite Fly ash …Web
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The direct recovery of antimony in the blast furnace, gold smelting furnace, cupellation furnace and reverberatory furnace was 95.44%, 84.95%, 85.11% and …Web
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The commercial route for the extraction of antimony from its sulfide mineral stibnite at Xikuangshan is a pyrochemical process (1423 K to 1623 K [1150 °C to 1350 °C]), which involves roasting the concentrate in a blast furnace, volatilizing the resultant antimony trioxide, and reducing the trioxide with carbon to a metallic antimony in ...Web
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In 2018, China produced 12.11 billion tons of tailings, accounting for 35.11% of the total production of bulk industrial solid waste. The tailings after mineral processing are usually discarded as solid waste in tailings ponds without any treatment, carrying potential heavy metal pollution risks [].Antimony is a toxic metalloid in the group VA of the fifth …Web
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The Xikuangshan Flash-Antimony Industry Company currently performs melting by blast furnaces and refining using reverberatory furnaces. More specifically, …Web
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In general the lowest grades of sulfide ores containing 5–25% antimony are volatilized to antimony trioxide: 25–40% antimony ores are smelted in a blast furnace: …Web
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The industrial importance of antimony is mainly derived from its use as flame retardant in plastics, coatings, and electronics, but also as decolourizing agent in glass, …Web
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Blast furnace is still the predominant technology used to produce primary lead metal. Sinter, coke and CaO are fed to the lead blast furnace; the coke reacts with oxygen at high temperatures and produces a reducing atmosphere inside the furnace, giving CO as main reducing gas. ... Antimony contained in the sinter enhances the formation of the ...Web
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The direct recovery of antimony in the blast furnace, gold smelting furnace, cupellation furnace and reverberatory furnace was 95.44%, 84.95%, 85.11% and 91.22%, respectively. The circular substance flow generated by the cupellation furnace accounted for 72.6% of the total circulation flow. One tonne of antimony accompanied 0.016 tonnes of ...Web
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De Re Metallica of G. Agricola describes the blast furnace used for tin smelting in the sixteenth century. In the eighteenth century, reverberating furnace was used for tin smelting in Cornwall. ... Aluminum reacts with arsenic and antimony to generate high melting point compounds whose density is less than that of tin. Then temperature is ...Web
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The direct recovery of antimony in the blast furnace, gold smelting furnace, cupellation furnace and reverberatory furnace was 95.44%, 84.95%, 85.11% and 91.22%, respectively. The circular substance flow generated by the cupellation furnace accounted for 72.6% of the total circulation flow. One tonne of antimony accompanied …Web
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Currently, more than 95% of antimony is produced through pyrometallurgical process in China. Stibnite and antimony-gold ore are often smelted in blast furnace, where most of antimony is volatilized …Web
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This process is usually carried out in a reverberatory furnace with capacities exceeding 50 000 tpa. In the second reduction stage, the antimony slag is reduced to produce high antimonial lead bullion and a silicate slag. Blast, rotary, or electric arc furnaces are used for the second smelt stage.Web
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