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Improved Smelting and Refining Processes for Production of Antimony …
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 eliminate the hazard of waste gases from antimony smelters a new hydrometallurgical process has also been developed that consists of alkali sulphide leaching ...
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FIRE REFINING OF ROUGH ANTIMONY FROM …
Keywords: rough antimony, fire refining, reagent mode, refining flux, refining from iron, lead, tin, and arsenic, metal grade For the most part, antimony is industrially obtained from sulfide ores [1–3]. One promising raw material for the efficient production of antimony is sodium antimonate, a product of alkaline refining of crude lead. Dur-
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CN104328289A
Belonging to the technical field of non-ferrous metal smelting, the invention relates to a method for removal of lead and arsenic in a crude antimony vacuum refining process. The method includes: first of all, adding a metal additive accounting for 1%-5% of the mass of crude antimony to obtain a mixed material, with the metal additive being metal manganese, metal aluminum or a mixture …
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Recovery of Pure Lead-Tin Alloy from Recycling …
Research has already been conducted on the use of aluminium to remove antimony and copper from lead from scrap lead–acid batteries in terms of lead pre-refining. To remove antimony, arsenic, and tin more thoroughly, an …
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Antimony Recovery from End-of-Life Products and Industrial Process …
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 is mainly derived from its use as flame …
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Lab Antimony Beneficiation: Key Processes and Equipment
The laboratory beneficiation process for antimony is a comprehensive and multi-step procedure requiring various specialized equipment. Each stage, crushing, grinding, gravity …
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OneMine | Minor Metals
There are found in nature upward of II2 minerals containing antimony, but only a few of them, listed in Table I, can be considered as antimony ore-forming minerals. Stibnite (Sb2S3), antimony sulphide or glance, is the principal ore of antimony. The oxide ores—cervantite, kermesite, valentinite, sernarmontite—occur sparingly in nature. Dry methods are generally adopted for …
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HOME | usantimony
USAC operates the only significant antimony smelter in the United States and it is in a "sold out" condition. The Company has proven experience in underground and open pit mining, flotation and gravimetric milling, crushing …
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Paulson-backed Perpetua strikes antimony pact to blunt …
John Paulson-backed Perpetua Resources has agreed to work with Sunshine Silver Mining & Refining Co. to find ways within the US to process antimony, one of the critical minerals under China's ...
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Melting of crude antimony in the low-tonnage production
During melting, sulfides react with iron, forming sulphurous iron and metallic antimony, droplets of which collect on the bottom of the furnace, and the empty rock is slagged.
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MIT's accidental smelting discovery unlocks the potential of antimony …
Electrolysis is also widely used in the production and refining of precious metals, for instance, electrolytic gold is produced using hydrochloric acid as an electrolyte, known as the Wohlwill process, which produces gold at 99.5% purity. Further electro-refining using the Miller chlorination process can improve gold's purity to 99.999%.
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Separation of Lead from Crude Antimony by
Explore millions of resources from scholarly journals, books, newspapers, videos and more, on the ProQuest Platform.
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Antimony Metallurgy
Antimony metallurgy is the technology that extracts antimony metal from antimony ores or produces antimony compounds. Antimony was discovered in the ancient time, and its name was derived from antimonite. In 1604, a process was invented to extract antimony and antimony sulfide as described by B. Valentine of Germany.
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Antimony Ore Crushing Raw Material to Refined Concentrate
The processing of antimony ore to produce a high-purity concentrate involves several critical stages, with crushing and refining being among the most vital. This article …
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Idaho Antimony Mine Soon Goes Live Amid Rising U.S.
Originally established as a gold mining operation in 1927, the Stibnite mine later discovered a large store of antimony, and was able to supply over 90% of the antimony - crucial to the production ...
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Separation of Lead from Crude Antimony by Pyro-Refining Process …
The main purpose of this study was to separate lead from crude antimony through an oxidation pyro-refining process and by using sodium metaphosphate as a lead elimination reagent. The process parameters that will affect the refining results were optimized experimentally under controlled conditions, such as the sodium metaphosphate charging dosage, the refining …
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Separation behavior of arsenic and lead from antimony …
During zone refining process, As concentration in the whole bar was considerably reduced from 456 ppm to below 150 ppm (and as low as 50 ppm at the end of the bar) after only one zone pass by adding 0.1 wt.% Al into the Sb, which is contributed to the floating of formed AlAs intermetallic. ... Method for removal of lead and arsenic in crude ...
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Separation of Lead from Crude Antimony by Pyro-Refining Process …
The main purpose of this study was to separate lead from crude antimony through an oxidation pyro-refining process and by using sodium metaphosphate as a lead elimination reagent.
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Antimony Recovery from End-of-Life Products and …
lighted antimony in its critical raw materials report, as the element with the largest expected supply–demand gap over the period 2015–2020. This has sparked efforts to find secondary sources of antimony either through the recycling of end-of-life products or by recovering antimony from industrial process residues. Valuable residues are ...
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Extraction of antimony from a hydrochloric acid side stream …
This work explores the feasibility of recovering antimony, present in a side stream of hydrochloric acid resulting from a copper electro-refining process, by hydrolysis with water. …
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American Resources begins antimony refining
"Based on our ongoing development work, we anticipate a very cost-effective refining process to produce ultra-pure commercial products." With the global antimony(III) oxide market …
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Production of high-grade antimony oxide from smelter slag …
It is possible to process complex antimony ores with this method. Based on the mineralogical composition of raw material, acid or alkaline leaching can be applied. ... Recovery of antimony trioxide flame retardants from lead refining residues by slag conditioning and fuming. Chem. Ing. Tech., 87 (2015), pp. 1569-1579. Crossref View in Scopus ...
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Development of a Two-Stage Hydrometallurgical Process for Gold–Antimony
Gold is considered a byproduct in the antimony refining process [3,4]. The presence of even small concentrations of antimony in gold-containing ores has a detrimental effect on the process of gold cyanidation. Antimonite undergoes oxidation, forming compounds such as antimonites ...
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Antimony Processing: Unlocking the Potential of a …
Refining techniques are employed to further purify and process antimony after it has been extracted from its ore. These techniques aim to remove impurities and obtain high-purity antimony products suitable for specific …
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METHODS FOR PROCESSING OF ANTIMONY …
Methods of reducing melting and sulfide-alkaline leaching of antimony sulfide concentrates to obtain metallic antimony and antimony trioxide are discussed, and methods of refining …
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Perpetua Resources, Sunshine Silver to explore …
Under the agreement, the companies will assess the technical potential for processing and refining antimony from Perpetua's Pentagon-backed Stibnite antimony and gold project at the Sunshine ...
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Oxygen-enriched molten pool antimony refining production process
The invention discloses an oxygen-enriched molten pool antimony refining production process, and belongs to the field of smelting of nonferrous metal. The process comprises the following steps: 1) batching: raw materials are uniformly mixed according to a mass ratio to obtain a mixture; 2) granulation: the uniformly mixed mixture is prepared as spherulites; 3) the prepared …
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Process of purifying metallic antimony
The herein disclosed process of purifying antimony by the action of chlorine provides a simple, economical method by which the impurities may readily be removed, leaving the antimony in a state of such high purity as to command the best market price. ... American Smelting Refining: Process for removing tellurium from antimony US4333762A (en ...
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Fire Refining of Rough Antimony from Impurities for
Results of an investigation aimed at optimizing the fire refining process for purification and extraction of antimony into a high-grade commercial metallic product are presented.
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US5451247A
A refining process described in DE 3,327,796 Cl uses oxygen-enriched air in the melting vessel. In the process described, the rate of refining is limited by the lead temperature of 650° C. in the vessel. ... For taking off the refining products tin, arsenic and antimony, the inert gas nozzle 2, 3 is withdrawn and the level of the molten lead ...
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US2713555A
a method of refining antimony for stibnite comprising, dissolving out the metal in said stibnite with sodium hydroxide solvent; filtering out undissolved ore and dross; laundering the filtered pregnant solution; and depositing out said antimony by continuously flowing said pregnant solution as an electrolyte in a continuous, circuitous path through a plurality of adjacent cells continuously ...
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Separating lead–antimony alloy by fractional crystallization …
The low-purity lead bullion contains only 75–80% by weight lead, leading to the poor efficiency of electrolytic refining. In this procedure, antimony is oxidized to Sb 2 O 3 and then reduced to Sb. The direct recovery ratio of lead and antimony is unsatisfactory due to the long process by conventional industrial pyrometallurgy process shown ...
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Lab Antimony Beneficiation: Key Processes and Equipment
6. Refining. The final stage of the process may involve further refining of the metallic antimony to achieve the desired purity levels. Equipment Used: Electrolytic Cell: This equipment is used for the electrolysis of antimony, allowing for the purification of the metallic product. During electrolysis, an electric current is passed through a ...
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CN113737020A
The invention relates to a method for deeply removing cadmium in a crude antimony refining process, belonging to the technical field of crude antimony refining. The method comprises the steps of crude antimony smelting, impurity removing agent preparation, primary slagging, secondary slagging, gas washing and deslagging, wherein an impurity removing agent is …
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