The problem discussed in this antimony process study is limited to a concentrator capable of beneficiating 150 tons per day of antimony ore.The antimony in this study occurs as the mineral stibnite (Sb2S3) in association with small amounts of pyrite, arsenopyrite, galena and lead sulfantimonides. The gangue is composed largely of quartz but contains, in addition, a small amount of talc.
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The Toowong Process has a wide range of applications for arsenic, antimony, mercury or tin bearing concentrates. It has been developed for projects requiring removal of deleterious elements, and for projects where those elements are the target metals of value (e.g. antimony projects). The process can be investigated for treating entire concentrates or for treating a high arsenic flotation product.
A hydro-/electrometallurgical process flowsheet for recovering antimony from copper concentrates was developed. • Excessive sodium sulphide concentration facilitates antimony leaching but it is detrimental to the electrolytic process. • Increase in sodium hydroxide promotes antimony electrowinning. • Antimony content of the copper concentrate was reduced from 1.7% to less than 0.1%
A hydrometallurgical process for the removal of arsenic and antimony from a so-called “dirty” copper concentrate (101) is described. The process comprises the following steps: Step 1: repulping (100) the “dirty” copper concentrate with an alkaline lixiviant (102, 103), and subjecting the “dirty” copper concentrate to an alkaline leaching process (“the Leach”) in a Leach reactor
A hydro-/electrometallurgical process flowsheet for recovering antimony from copper concentrates was developed. It is clearly shown from Fig. 3 that leaching of antimony from the concentrate is strongly influenced by temperature. A slower increase in the leaching degree is noticeable after 1 h. This is probably due to the leaching of the fine mineral particles before the coarse ones since
antimony concentrate, leaching process, alkaline leaching, kinetics . 1. Introduction . Gold containing antimony ore is a type of refractory gold in which gold is intimately associated with stibnite (Guo et al., 2017). When the traditional cyanidation method is used for gold extraction,
Process Residues: A Critical Review grade of antimony in the concentrate, different pyromet-allurgical methods can be used to extract antimony . For low-grade ores (5–25 % Sb), oxide volatilization is used. The ores are roasted at 1000 C, and the volatile Sb 2O 3 is recovered. Intermediate grade ores (25–40 % Sb), and Sb- rich residues, slags, mattes, and ﬂue dusts are smelted in
Namn: Samuel Ayowole Awe Ämne: Processmetallurgi/Process Metallurgy Avhandling: Antimony Recovery from Complex Copper Concentrates through Hydro- and Electrometallurgical Processes Opponent: Professor Olof Forsén, Department of Materials Science and Engineering, Aalto University School of stone Technology, Finland Ordförande: Professor Åke Sandström, Institutionen för
The antimony concentrate is often added to sulfide concentrates as it is not separately processed in view of its small amount. Nevertheless, for countries having no antimony deposits, the development of a technology for . ournal of stone Technology and Metallurgy, 53, 5, 201 1002 its separate processing is a topical task. The research in this area is focused at a smelting reduction process
Antimony is a stone 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
A process for the recovery of antimony values from a material containing the same is described wherein the material is subjected to a controlled roasting step, the resulting calcine leached with an alkaline solution to extract antimony values and the antimony-pregnant solution acidified to precipitate antimony values. The roasting step is carried out in a reducing environment thus assuring
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 retardant in plastics, coatings, and
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