antimony refining technique
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antimony refining technique

Improved Smelting and Refining Processes for Production of ...

The reverberatory furnace for reduction of antimony oxide was also enlarged: refining at lower temperatures and continuous mechanical casting into ingots gave a high-grade regulus. To enlarge the range of antimony products successful testwork was carried out on a technique characterized by fuel-free, self-oxidation volatilization capable of ...

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Antimony and Antimony Compounds - Grund - - Major ...

Jul 15, 2006  Refining and fine purification techniques are used for production of pure antimony metal. There is growing demand for extremely pure antimony. Antimony oxide is being used as flame retardant in increasing quantities. Antimony is a component of many lead and tin alloys, which are important materials for making bearings and solders.

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ASTM B237 - 20 Standard Specification for Refined Antimony

This specification covers refined antimony in ingot, pig, or cake form. Refined antimony shall be supplied in commercial standard forms in Grade A and Grade B. The grades of refined antimony shall be produced by any smelting and refining process from ore or recycled materials to meet the chemical requirements of this specification.

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Antimony Smelting - 911metallurgist

Mar 19, 2017  The history of the antimony industry of China dates back to 1897 when the Tai Shing Co. was formed, under contract with the Hunan Bureau of Mines, for the smelting of the ore to crude; and in 1908 the Wah Chang Mining Smelting Co. was formed for the smelting and refining of the ore and crude to regulus.

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MIT’s accidental smelting discovery unlocks the potential ...

Nov 28, 2016  Electrolytic refining. Electrolysis, or electrolytic refining, is a technique that is already in use for the extraction and purification of metals, and it is a much more cost-effective and efficient technique than traditional heat-based smelting methods. ... Antimony, together with others such as cobalt, gallium, germanium, zirconium, rhenium ...

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CN104651627A - Method for separating antimony from tin ...

The invention relates to a method for separating antimony from tin-antimony alloy by vacuum distillation, belonging to the technical field of nonferrous metal vacuum metallurgy. The method comprises the following steps: melting the tin-antimony alloy to obtain a tin-antimony alloy liquid; continuously and uniformly sending the tin-antimony alloy liquid into a continuous vacuum furnace in a ...

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Separation behavior of arsenic and lead from antimony ...

Antimony Arsenic a b s t r a c t When classifying impurities in commercial pure antimony (Sb, 99.8%), arsenic (As) and lead (Pb) should be brought to the forefront consideration. Due to the known difficulty of As removal through zone refining, it is meaningful to investigate its separation tendency

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Separation behavior of arsenic and lead from antimony ...

May 01, 2020  Separation behavior of arsenic and lead from antimony during vacuum distillation and zone refining ... selective crystallization via zone refining is reported to be an effective technique to produce high purity metals by keeping the impurities in the ... Zn was highly accumulated at the end of the bar. But the refining efficiency of As is still ...

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Antimony - Wikipedia

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3).Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. Metallic antimony was also known, but it was

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Antimony and Antimony Compounds - Grund - - Major ...

Jul 15, 2006  Refining and fine purification techniques are used for production of pure antimony metal. There is growing demand for extremely pure antimony. Antimony oxide is being used as flame retardant in increasing quantities. Antimony is a

Read More
ASTM B237 - 20 Standard Specification for Refined Antimony

This specification covers refined antimony in ingot, pig, or cake form. Refined antimony shall be supplied in commercial standard forms in Grade A and Grade B. The grades of refined antimony shall be produced by any smelting and refining process from ore or recycled materials to meet the chemical requirements of this specification.

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Antimony Recovery from End-of-Life Products and Industrial ...

Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony

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Antimony - Wikipedia

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3).Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. Metallic antimony

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CN104651627A - Method for separating antimony from tin ...

The invention relates to a method for separating antimony from tin-antimony alloy by vacuum distillation, belonging to the technical field of nonferrous metal vacuum metallurgy. The method comprises the following steps: melting the tin-antimony alloy to obtain a tin-antimony alloy liquid; continuously and uniformly sending the tin-antimony alloy liquid into a continuous vacuum furnace in a ...

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Emission Estimation Technique Manual

• Antimony Refining • Molybdenum Metal Powder Manufacture • Bismuth Smelting/Refining • Tantalum Metal Powder Manufacture • Magnesium Smelting In addition gold refining and nickel smelting have been previously covered by the NPI in the Emission Estimation Technique Manual for Gold Ore Processing and the Emission Estimation

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A Brief History of Antimony in China Amspec

Refining techniques have progressed to the point where 99.999% or more purity antimony is now feasible. In addition, a great deal of work was done to improve the blast furnace volatilization process which has produced better metallurgical results.

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US5849061A - Process for refining high-impurity copper to ...

A process for refining high-impurity blister copper to anode quality copper is disclosed. In an oxidation step of a blister copper refining stage, soda ash fluxing removes antimony and arsenic while also removing sulfur and iron. In a deoxidation step of the blister copper refining stage, sulfur hexafluoride is injected at a controlled oxygen concentration to remove bismuth while reducing the ...

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A pyrometallurgical alternative: The refining electrolysis ...

In refining electrolysis in hexafluorosilic acid with current densities of 100 A/m 2, it is possible to separate bismuth and antimony from prerefined lead bullion. Pure lead with less than 50 ppm bismuth and less than 100 ppm antimony was deposited at the cathode. The current efficiency was 99%, and the specific energy consumption was 30–40 ...

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Copper Refining Electrolyte and Slime Processing ...

Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and Bi) and some transition metals (Mt) co-dissolved ...

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Electrorefining - an overview ScienceDirect Topics

The refining of platinum is technically more challenging than gold or silver due to the lack of easily ... up to a combined total of 20–30 g/L arsenic, antimony, bismuth, and nickel gradually accumulate in the electrolyte as a result of the dissolution of these ... a kind of partial reprocessing technique was ...

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Antimony Amspec

Refining techniques have progressed to the point where 99.999% or more purity antimony is now feasible. In addition, a great deal of work was done to improve the blast furnace volatilization process which has produced better metallurgical results.

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Metallurgy - Refining Britannica

Metallurgy - Metallurgy - Refining: Refining is the final procedure for removing (and often recovering as by-products) the last small amounts of impurities left after the major extraction steps have been completed. It leaves the major metallic element in a practically pure state for commercial application. The procedure is accomplished in three ways: refining

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A New Pyrometallurgical Process for Producing Antimony ...

They proposed a pyrometallurgical process based on reduction smelting, alkaline refining, and oxidation to extract antimony from antimony dust and produce Sb 2 O 3 with a purity above 99.8 % [76 ...

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Extraction of Antimony

The refined metal is then ladled out and cast as " star antimony," the surface of the cakes showing a well-defined crystal structure. A method has also been suggested for refining electrolytically using an electrolyte containing antimony trifluoride with about 100 grams of free sulphuric acid and 20 grams of free hydrofluoric acid per litre.

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Antimony and Antimony Compounds - Grund - - Major ...

Jul 15, 2006  Refining and fine purification techniques are used for production of pure antimony metal. There is growing demand for extremely pure antimony. Antimony oxide is being used as flame retardant in increasing quantities. Antimony is a

Read More
A New Pyrometallurgical Process for Producing Antimony ...

They proposed a pyrometallurgical process based on reduction smelting, alkaline refining, and oxidation to extract antimony from antimony dust and produce Sb 2 O 3 with a purity above 99.8 % [76 ...

Read More
CN104651627A - Method for separating antimony from tin ...

The invention relates to a method for separating antimony from tin-antimony alloy by vacuum distillation, belonging to the technical field of nonferrous metal vacuum metallurgy. The method comprises the following steps: melting the tin-antimony alloy to obtain a tin-antimony alloy liquid; continuously and uniformly sending the tin-antimony alloy liquid into a continuous vacuum furnace in a ...

Read More
Emission Estimation Technique Manual

• Antimony Refining • Molybdenum Metal Powder Manufacture • Bismuth Smelting/Refining • Tantalum Metal Powder Manufacture • Magnesium Smelting In addition gold refining and nickel smelting have been previously covered by the NPI in the Emission Estimation Technique Manual for Gold Ore Processing and the Emission Estimation

Read More
A Brief History of Antimony in China Amspec

Refining techniques have progressed to the point where 99.999% or more purity antimony is now feasible. In addition, a great deal of work was done to improve the blast furnace volatilization process which has produced better metallurgical results.

Read More
A pyrometallurgical alternative: The refining electrolysis ...

In refining electrolysis in hexafluorosilic acid with current densities of 100 A/m 2, it is possible to separate bismuth and antimony from prerefined lead bullion. Pure lead with less than 50 ppm bismuth and less than 100 ppm antimony was deposited at the cathode. The current efficiency was 99%, and the specific energy consumption was 30–40 ...

Read More
Electrorefining - an overview ScienceDirect Topics

The refining of platinum is technically more challenging than gold or silver due to the lack of easily ... up to a combined total of 20–30 g/L arsenic, antimony, bismuth, and nickel gradually accumulate in the electrolyte as a result of the dissolution of these ... a kind of partial reprocessing technique was ...

Read More
Copper Refining Electrolyte and Slime Processing ...

Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and Bi) and some transition metals (Mt) co-dissolved ...

Read More
Metallurgy - Refining Britannica

Metallurgy - Metallurgy - Refining: Refining is the final procedure for removing (and often recovering as by-products) the last small amounts of impurities left after the major extraction steps have been completed. It leaves the major metallic element in a practically pure state for commercial application. The procedure is accomplished in three ways: refining

Read More
Purification or refining of the Metal Chemistry, Class ...

May 15, 2020  Purification or refining of Metals. The metal obtained by any of the above methods is usually impure and is known as crude metal. Therefore, the crude metal is to be purified. The impurities may be in the form of. 1) unreduced oxides of

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Ancient Metallurgy - University of California, San Diego

The introduction of antimony in addition to the tin and copper produces a harder bronze, better able to hold a cutting edge and less likely to be bent in use. Arsenical Bronze . Like antimony, arsenic added to the tin and copper (up to as much as 3% of the whole)

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Antimony Sb - PubChem

Antimony is a silvery-white metal that is found in the earth's crust. Antimony ores are mined and then mixed with other metals to form antimony alloys or combined with oxygen to form antimony oxide. Little antimony is currently mined in the United States. It is brought into this country from other countries for processing. However, there are companies in the United States that produce antimony ...

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Antimony- Drinking Water Contaminants, Facts/Removal Methods

From 1987 to 1993, according to the Toxics Release Inventory antimony and antimony compound releases to land and water totaled over 12 million lbs. These releases were primarily from copper and lead smelting and refining industries.

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