scholarly journals Extraction of Non-ferrous Metals from Underspoil Waters

2020 ◽  
Author(s):  
S.A. Vzorodov ◽  
A.M. Klyushnikov
Keyword(s):  
Copper Extraction ◽  
Processing Plant ◽  
Zinc Extraction ◽  
Ferrous Metals ◽  
Process Flowsheet ◽  
Aluminum Iron ◽  
Copper Zinc ◽  
Zinc Processing ◽  
Two Stages ◽  
Iron Manganese

he focus of the study was the acidic underspoil waters of Safyanovskaya copper JSC containing 0.17 g/l of copper and 1.8 g/l of zinc (pH 2.8–2.9). The purpose of the work was research and development of water purification technology from impurities (copper, zinc, aluminum, iron, manganese), suggesting the possibility of copper and zinc extraction in the form of commercial products. The process of copper extraction by cementation with metallic iron was studied. It was shown that this method could allow to extract 94–95 % copper into a concentrate. The zinc extraction from solution after copper removal was studied by precipitation with NaHS, Na2CO3, NaOH and CaO. For economic reasons it is recommended to make zinc precipitation in two stages with CaO in order to produce cake containing 15–21 % Zn with extraction 80–87 %. This cake can be utilized at zinc processing plant. A process flowsheet for acidic underspoil waters, including copper cementation and the precipitation of zinc cake, has been developed. According to this scheme, mother liquor from zinc precipitation should be treated with lime until pH reaches 10–10.5, followed by pulp settling. As a result, purified water of the following composition is obtained, mg/l: zinc – 0.05, copper – 0.01, aluminum – 0.02, iron – 0.02, manganese – 0.05. Keywords: underspoil water, copper, zinc, iron, cementation, calcium oxide, concentrate, precipitation

COPPER ALLOY No. 865

Alloy Digest ◽  
1977 ◽  
Vol 26 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Copper Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Brass Alloy ◽  
Manganese Alloy ◽  
Aluminum Iron ◽  
Copper Zinc ◽  
Iron Manganese ◽  
Strength And Ductility

Abstract Copper Alloy No. 865 is a copper-zinc-aluminum-iron-manganese alloy that is classified as high-strength yellow brass. It has a tensile strength about 20,000 psi greater than that of the corresponding copper-zinc (yellow brass) alloy; however, it is around the low-strength end of the manganese bronzes. Copper Alloy No. 865 has an excellent combination of strength and ductility and good corrosion resistance. Its many uses include gears, propellers and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-344. Producer or source: Copper alloy foundries.

COPPER • ZINC • ALUMINIUM • FERROUS METALS • CONCRETE: CORROSION OF METALS IN BUILDINGS LONDON SYMPOSIUM, MARCH, 1957

1957 ◽  
Vol 4 (5) ◽  
pp. 170-173
Author(s):  
S. BAKER ◽  
E. CARR ◽  
E.H. LAITHWAITE ◽  
E.W. SKERREY ◽  
PHILIP E. HALSTEAD ◽  
...  
Keyword(s):  
Concrete Corrosion ◽  
Ferrous Metals ◽  
Copper Zinc

An Influence of EAF Dust Calcining Conditions on Zinc Leaching Efficiency in Ammonium-Chloride Media

2020 ◽  
Vol 299 ◽  
pp. 963-967
Author(s):  
Yulia I. Toporkova ◽  
D.A. Prodanova ◽  
O.S. Anisimova
Keyword(s):  
Extraction Efficiency ◽  
Electric Arc ◽  
Arc Furnace ◽  
Optimal Conditions ◽  
Mass Ratio ◽  
Zinc Extraction ◽  
Calcination Time ◽  
Eaf Dust ◽  
Two Stages ◽  
Leaching Efficiency

An ammonium leaching of electric arc furnace dust (EAFD) was described in this paper. Ural steelmaking plants obtain EAFD of the following chemical composition, %: 23 Zn; 26 Fe; 10 Cl; 2,5 Ca; 2 Mg; 1,2 Pb; 1 Na. The most complete zinc extraction can be achieved with two-stages treatment by calcination of dusts [1], followed by leaching. The effect of calcination temperature (500-1000 °C), calcination time (1-4 hours) and Ca/Fe mass ratio on zinc extraction efficiency in ammonia solutions was studied. The optimal conditions were proposed to extract up to 87% zinc.

Collaborative Study of Colorimetric Determination of Aluminum, Iron, Manganese, Phosphorus, and Titanium in Liming Materials with Supplementary Reports on Methods for Silicon

1964 ◽  
Vol 47 (6) ◽  
pp. 1019-1027
Author(s):  
P Chichilo
Keyword(s):  
Collaborative Study ◽  
Colorimetric Determination ◽  
Aluminum Iron ◽  
Standard Deviations ◽  
Iron Manganese

Abstract The following determinations were studied collaboratively: Al with ammonium aurintricarboxylate (Aluminon); Fe with 2,4,6-tripyridyl-s-triazine (TPTZ); Mn by oxidation to permanganate with KI04; P by a heteropoly blue method; and Ti with disodium-1,2-dihydroxybenzene-3,5-disulf onate (Tiron). Sample solutions were prepared by HCIO4 digestion or NaOH fusion. Reports were received from 11 collaborators. Eight of these reported all 5 elements, 2 reported 4 elements, and 1 reported 2 elements. Eight collaborators also reported Si. Standard deviations and mean errors are acceptable, and it is recommended that the methods be adopted as official, first action.

Al-Fe-Mn (Aluminum-Iron-Manganese)

1994 ◽  
Vol 15 (4) ◽  
pp. 410-411 ◽  
Author(s):  
V. Raghavan
Keyword(s):  
Aluminum Iron ◽  
Iron Manganese

scholarly journals DENTAL STATUS OF WORKERS OF MINING AND PROCESSING PLANT ENGAGED IN MINING AND PROCESSING OF COPPER-ZINC ORES

2018 ◽  
Vol 22 (1) ◽  
pp. 64-67
Author(s):  
Aigul A. Trofimchuk ◽  
M. F Kabirova ◽  
O. A Gulyaeva ◽  
L. K Karimova ◽  
G. A Salyakhova
Keyword(s):  
Dental Health ◽  
Control Group ◽  
Processing Plant ◽  
Periodontal Tissues ◽  
Dental Examination ◽  
Production Factors ◽  
High Prevalence ◽  
Mucous Membranes ◽  
Processing Plants ◽  
Copper Zinc

With the aim of studying the state of periodontal tissues in workers of mining and processing plants engaged in the extraction and processing of copper-zinc ores carried out a comprehensive dental examination of 395 workers of the production and the control group of 90 people. There was a high prevalence and intensity of diseases of hard tissues of teeth, periodontal tissues and mucous membranes of the oral cavity of the miners engaged in the extraction and processing of copper-zinc ores, which correlates with the degree and duration of contact with harmful production factors. The results of the study can be used to optimize the existing system of protection of dental health of the employees of this and other similar enterprises.

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