antimony fine machineantimony refining process

The process for treating antimonial lead which comprises softening the lead, reducing and smelting the antimony slag therefrom to metal, removing tin and arsenic from said metal, concentrating same into a high antimony product and euitectic metal, treating the high antimony product in a fuming furnace thereby yielding antimony oxide, an .

In blast furnace, the iron oxide is reduced by:

Iron oxide is reduced to iron by C O. In a blast furnace, a substance called coke (mainly C) reacts with oxygen, O2. ., to form carbon monoxide, C O. The carbon monoxide (a strong reducing agent) then reacts with iron oxide (in the form of hematite or magnetite) to form pig iron (mainly Fe) and carbon dioxide. Option B is correct.

US2330307A - Process of smelting antimony ore - Google Patents

US2330307A US434775A US43477542A US2330307A US 2330307 A US2330307 A US 2330307A US 434775 A US434775 A US 434775A US 43477542 A US43477542 A US 43477542A US 2330307 A US2330307 A US 2330307A Authority US United States Prior art keywords crucible trioxide antimony slag carbon Prior art date Legal status (The legal status is an assumption and is not a …

General principles of extraction of metals

reactive) metals such as metallic lead, antimony, copper and mercury etc… have low reactivity: therefore, their sulphide ores on roasting produce the metals directly through auto-reduction ... used up to furnace temperature at 2000 ... can reduce the metal oxide …

Antimony Trioxide (Properties, Uses) - Assignment Point

Antimony(III) oxide was formed at four sites in the EU27 as of 2010. It can be produced in one of two ways: by re-volatilizing crude antimony(III) oxide or by oxidizing antimony metal. Antimony trioxide is a white powder with a density of 5.67 grams per cubic centimeter. When hot, it turns yellow and then returns to white when cooled.

Lead and tin removal from antimony metal by refining ...

consumed for antimony trioxide required for the further production of flame retardants. For high products of antimony trioxide, the only suitable metal is that of Sb99.65 grade or Sb99.85 grade as the impurities in it do not exceed 0.35-0.15%. Table 1 shows the chemical compositions of antimony grades by one of the world's leading producers.

Lead and Zinc Smelting - IFC

furnace for reducing, where the carbon also acts as a fuel and smelts the lead-containing materi-als. The molten lead flows to the bottom of the furnace, where four layers form: "speiss" (the lightest material, basically arsenic and antimony), "matte" (copper sulfide and other metal sulfides), blast furnace slag (primarily silicates ...

U. S. Antimony Announces Continued Progress on the Los ...

Sep 09, 2019· The Madero smelter is now utilizing LRF furnaces with good lining that require less fuel, coal, electricity, maintenance and manpower. Recoveries are better and faster. Rather than shipping a 70-75% crude oxide to Montana from Madero, we are now shipping a 95% metal product. This saves on freight and approximately $300.00 per ton for slag disposal.

Glass Manufacturing - IFC

glass, lead oxide, potash, zinc oxide, and other metal oxides are added. Refining agents include arsenic trioxide, antimony oxide, nitrates, and sulfates. Metal oxides and sulfides are used as coloring or decoloring agents. The most common furnace used for manufac-turing …

metal distillation, vacuum distillation, nonferrous ...

Changsha Powben Advanced Manufacturing Co., Ltd is a is a high-tech enterprise dedicated to the R&D of metal distillation technology and high-end equipment manufacturing for 18 years. With our own independent intellectual property rights and strong technical strength, it undertakes the process design, equipment manufacturing, installation and commissioning guide of various metal smelting ...

Lead smelting - Wikipedia

Smelting uses suitable reducing substances that will combine with those oxidizing elements to free the metal. Reduction is the final, high-temperature step in smelting. It is here that the oxide becomes the elemental metal. A reducing environment (often provided by carbon monoxide in an air-starved furnace) pulls the final oxygen atoms from the ...

ANTIMONY OXIDE LISTING BACKGROUND - US EPA

In this process, antimony metal (sources include ingots, ore, and sodium antimonate) is melted in a furnace. The molten metal is burned producing an antimony oxide vapor. The vapors are quenched with air and then cooled in hairpin coolers. Antimony oxide sublimes directly from …

Antimony Trioxide | Applications and Specifications

Antimony oxide can be prepared by two processes, the direct and the indirect process. Indirect process. In this process, antimony metal or ores is melted in a furnace to give ATO vapors. The vapors are quenched with air and cooled to convert the vapor to white powder. These powders are further filtered to give antimony trioxide powder. Direct ...

Extraction of Iron | Metallurgy | Blast Furnace and Reactions

The purpose of a Blast Furnace is to reduce the concentrated ore chemically to its liquid metal state. A blast furnace is a gigantic, steel stack lined with refractory brick where the concentrated iron ore, coke, and limestone are dumped from the top, and a blast of hot air is blown into the bottom.

U.S. GeoloGICAl SURvey CIRCUlAR 1196–Q

furnace; and ores that have 5 to 60 percent antimony content are melted and solidified under a reducing atmosphere to form needle or liquated antimony. The blast furnace also is used for mixed sulfide and oxide ores and for oxidized ores that contain up to about 40 percent antimony, direct reduction with iron

Reducing Metal-Oxides in Brazing - Vacaero

Jul 29, 2018· Reducing Metal-Oxides in Brazing. July 29, 2018 by Dan Kay. Let me make two important statements right at the start: 1. Surface-oxidation of metals will prevent effective brazing. 2. Brazing filler metals (BFMs) do not like to bond to or flow over, oils, dirt, greases, or oxides on metal surfaces. Thus, if any of the surface contaminants just ...

Antimony trioxide - Wikipedia

Antimony(III) oxide is the inorganic compound with the formula Sb 2 O 3.It is the most important commercial compound of antimony.It is found in nature as the minerals valentinite and senarmontite. Like most polymeric oxides, Sb 2 O 3 dissolves in aqueous solutions with hydrolysis.A mixed arsenic-antimony oxide occurs in the nature as the very rare mineral stibioclaudetite.

Recovery of Antimony: A Laboratory Study on the Thermal ...

10%· Jan 11, 2018· Industrially, reduction of antimony oxide to metallic antimony is achieved by heating and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition of an alkaline flux but it cannot be eliminated [ 20 ] and volatilized antimony oxide is recovered in flues, condensing pipes, bag houses ...

US5013532A - Method for recycling electric arc furnace ...

This invention relates to the metallurgy of iron and particularly to the separation and recovery of metals from electric arc furnace (EAF) dusts. While the invention discloses a process for the separation and recovery applicable to zinc, lead, cadmium and antimony contained in such EAF dusts, the invention is particularly applicable to the separation and recovery of zinc.

Efficient Bath-Smelting Reduction of Antimony Oxide in FeO ...

Jan 02, 2019· However, both the traditional processes and the intensified smelting approaches use a reverberatory furnace to reduce Sb 2 O 3 in molten sodium oxide medium, which leads to high antimony content in the alkaline slag (> 15%) and a low direct recovery rate of antimony (< 70%), rendering these processes inefficient.8 Meanwhile, arsenic and lead ...

Recovery of Antimony: A Laboratory Study on the Thermal ...

metal, and low-grade ores are commonly produced by pyrometallurgical methods [20]. Industrially, reduction of antimony oxide to metallic antimony is achieved by heat-ing and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition of an alkaline flux but it cannot be eliminated [20] and

The metallurgy of antimony - ScienceDirect

Jul 17, 2012· Oxide reduction: The oxides of antimony are reduced to metal with charcoal in reverberatory furnaces at about 1200 °C. This is illustrated in Eqs., . An alkaline flux consisting of soda, potash and sodium sulfate, is commonly used to minimize volatilization and dissolve residual sulfides and gangue. Part of the slag is frequently reused.

Air, Energy & Mining Division

The primary operation at the facility is the production of antimony oxide. Six propane-fired fuming furnaces are used to oxidize antimony metal (containing 99.8% antimony) to antimony trioxide. Each furnace is equipped with a baghouse, which collects the antimony trioxide. There is also one furnace, which is used to reduce antimony oxide back ...

Environmental Guidelines for Glass Manufacturing

glass, lead oxide (up to 32 wt. %), potash, zinc oxide, and other metal oxides are added. Refining agents include arsenic trioxide, antimony oxide, nitrates, and sulfates. Metal oxides and sulfides are used as (de-) coloring agents. The most common furnace used …

Antimony Oxide Listing Background Document for the ...

In this process, antimony metal (sources include ingots, ore, and sodium antimonate) is melted in a furnace. The molten metal is burned producing an antimony oxide vapor. The vapors are quenched with air and then cooled in hairpin coolers. Antimony oxide sublimes directly from a

12.11 Secondary Lead Processing

furnaces are used to process high-lead-content scrap. The partially purified lead is periodically tapped from these furnaces for further processing in smelting furnaces or pot furnaces. 12.11.2.2 Smelting - Smelting produces lead by melting and separating the lead from metal and nonmetallic contaminants and by reducing oxides to elemental lead.

Antimony Compounds - US EPA

Antimony is a silvery-white metal that is found in the earth's crust. Antimony ores are mined and then either changed to antimony metal or combined with oxygen to form antimony oxide. (1) Antimony trioxide is a white powder that is very slightly soluble in water. (1) Antimony metal is a very brittle, moderately hard metal. (1)

Lead - Essential Chemical Industry

The molten lead is tapped off from the base of the furnace and either cast into, typically, 4 tonne ingots or put into a 'holding kettle' which keeps the metal molten for the refining process. The product contains about 99.5% lead, the remaining 0.5% being mostly antimony and silver with smaller amounts of other metals, including gold.

Ironmaking 101 – From Ore to Iron with Blast Furnaces ...

Oct 10, 2017· The carbon in the coke reacts with the oxygen to produce a reducing gas, carbon monoxide (CO) according to the following reaction: 2 C (s) + O 2 (g) → 2 CO + Heat. In the upper region of the blast furnace where temperature range from 600 to 700 C. the iron ore or iron oxide is reacts with the gaseous CO reductant to produce iron: Fe 2 O 3 (s ...

Antimony Smelting - Mineral Processing & Metallurgy

Mar 18, 2016· Hence the percentage loss in antimony is: 100 x (0.25 x 4480) – (1224 x 0.805)/ (0.25 x 4480) = about 12 per cent. Each furnace requires two workmen per shift of 12 hours. (b) Reduction of the Trioxide to Regulus.—The reduction furnace can smelt two charges per …

Apparatus for refining lead - Paul Bergsoe & Son A/S

The action of the limited quantity of reducing agent is to cause a preferential reduction of lead oxide from the lead oxide-antimony oxide slag before the slag leaves the furnace, thus reducing still further the quantity of slag required to be retreated and at the same time enhancing its antimony content.

(PDF) Effect of antimony (III) oxide on reduction of ...

antimony or arsenic oxide in a glass that already contains a coloring polyvalent ion m ay change the resulting color of such a glass. These oxides have reducing power that follows the order:

Antimony Trioxide - an overview | ScienceDirect Topics

Twenty gram of base glass was prepared by melting the raw materials potassium metaborate, KBO 2 ·xH 2 O (15.7% H 2 O) and antimony (III) oxide, Sb 2 O 3 in a raising hearth electric furnace in a high purity silica crucible at 900 °C in air.