Crushing & Grinding Machines

Direct sulphidization fuming of zinc

Dec 13 1994 0183 32 We claim 1 A process for the treatment in a reaction vessel of a feed material said feed material containing zinc sulphide or other zinc bearing material and an iron sulphide containing material or compound to effect a separation of zinc from iron the process comprising fuming either zinc or sulphur vapor or zinc sulphide vapor in the vessel said fuming comprising contacting either or...

Decomposition of Zinc Ferrite in Zinc Leaching Residue by

including Na2CO3 roasting 22-24 and sulphation roasting 7 25 whereby zinc ferrite is converted into soluble zinc and iron compounds under high temperature However in the Waelz process most of the irons contained in zinc ferrite is reduced into metallic iron and subsequently agglomerates into balls with...

Minerals Engineering International Online

Nyamai CM Surapunt S and Itagaki K Phase relations in the Cu 2 S-FeS-ZnS and Cu 2 S-PbS-ZnS ternary systems at 1473K extraction of zinc from sulphide ore using liquid copper as a reagent CIM Bulletin Vol 95 Number 1059 March 2002 Zhang Z Reddy R G Viscosities of lead silicate slags...

Thermodynamic studies on sulphate roasting for zinc

Thermodynamic studies on sulphate roasting for zinc electrowinning from carbonate ore Thermodynamic studies on sulphate roasting for zinc electrowinning from carbonate ore Madkour Loutfy H 1986-05-01 00 00 00 Chemistry Department Faculy of Science Tanta University Tanta Egypt Manuscript received I March 1985 and accepted 9 October 1985 The bulk of the work consists of a...

US1937632A

US1937632A US565153A US56515331A US1937632A US 1937632 A US1937632 A US 1937632A US 565153 A US565153 A US 565153A US 56515331 A US56515331 A US 56515331A US 1937632 A US1937632 A US 1937632A Authority US United States Prior art keywords zinc solution acid sulphate ore Prior art date 1931-09-25 Legal status The legal status is an assumption and is not a legal...

Minerals Engineering International Online

Minerals Engineering International Metallic Ores Zinc EY Yazici F Ahlatci E Yilmaz O Celep H Deveci Precipitation of zinc from cyanide leach solutions...

STUDY OF SULPHATING ROASTING WITH THE HELP OF IRON

The results of the study of the process of sulphating roasting of zinc cakes with the help of iron sulfates FeSO4 and Fe2 SO4 3 are presented in the article The elemental and phase composition as well as the microstructure of the zinc cake of PJSC Chelyabinsk Zinc Plant were studied Based on the thermodynamic calculation the temperature ranges of the sulphating roasting and the...

STUDY OF KINETICS INVOLVED IN OXIDATION OF

22 Roasting 6 221 Roasting of zinc sulphide 7 23 Concept of Ellingham diagram 7-8 24 Aim 9 ZnS ore pellets increases with time of exposure to attain a sulphation...

Sulfidation roasting of zinc leaching residue with pyrite

Through sulfidation roasting of ZLR with pyrite zinc and iron were converted into ZnS and Fe3O4 The effects of pyrite dosage roasting temperature and roasting time on the sulfidation of zinc in...

6 Copper Ores Bio Leaching Nickel Copper

6 Copper Ores Bio Leaching - Free download as Powerpoint Presentation ppt PDF File pdf Text File txt or view presentation slides online...

US4676828A

US4676828A US06/737 620 US73762085A US4676828A US 4676828 A US4676828 A US 4676828A US 73762085 A US73762085 A US 73762085A US 4676828 A US4676828 A US 4676828A Authority US United States Prior art keywords solution leaching zinc iron residue Prior art date 1984-05-28 Legal status The legal status is an assumption and is not a legal conclusion...

PDF Electro

If we Development of a Sulphation Process for Complex Sulphide apply an ac voltage to such a system of two Ores Trans Metallurgical Society of AIME 224 - 827 semiconductors the p-n junction will pass the current of Taha F Afifi SE Madkour L H 1982...

A study of the leaching of copper and zinc from a greek

Jul 01 1984 0183 32 This study is an investigation of the extraction of copper and zinc from a mixed sulphide concentrate by means of a conventional hydrometallurgical pr...

US8911611B2

A process for obtaining electrolytic manganese from the treated sludge of the exhaust gases of ferroalloy production furnaces for any other industrial waste having magnesium in general with a significant manganese content by means of a process consisting of the following phases sulphation lixiviation purification conditioning and electrolysis and whereby a manganese sulphate liquor is...

The chemical reaction involved in roasting process `ZnS O_ 2

In sulphation roasting of products are 1 19 18k LIKES 29k VIEWS 29k SHARES In oxidising roasting of ZnS products are 1 19 000 LIKES 700 VIEWS 700 SHARES In oxidising roasting of ZnS products are 1 19 000 LIKES 900 VIEWS 900 SHARES Consider the...

Innovative methodology for comprehensive utilization of

Considering the drawbacks of pyrometallurgy and hydrometallurgy some researchers recently paid their attentions to a novel approach that is the combination of pyrometallurgical and hydrometallurgical process which is mainly using the method of roasting such as transformation roasting 21 22 sulphation roasting 14 and reduction roasting...

RU2441930C1

Изобретение относится к способу переработки бедных цинковых окисленных руд и концентратов с извлечением цинка марганца железа свинца серебра кальция и двуокиси кремния Способ включает дробление измельчение...

Research statement

Jan 03 2017 0183 32 Three approaches viz salt roasting sulphation roasting and oxidative chloride leaching were studied in detail An in depth thermodynamic analysis was conducted on aspects 3 concerning construction of the relevant M-S-O phase diagrams and equilibria considerations on numerous reactions that take place in salt roasting...

Recovery of zinc from zinc bearing sulphidic ores and

Dec 06 1988 0183 32 The roasting operation is conducted in the temperature range of 700 176 -1050 176 C to expedite oxidation and simultaneously prevent sulphation by using an oxygen-deficient atmosphere such that the period of contact between sulphidic mineral particles and the oxygen is essentially controlled and thus the conversion of the sulphide minerals to...

WO1998036102A1

Zinc values are recovered from zinc sulphide-containing raw material feed by a process which includes the steps of smelting the raw material in the presence of a carbonaceous reductant to substantially reduce the zinc sulphide to metallic zinc and to vaporize the zinc thereby producing furnace gases containing zinc vapour and sulphur dioxide and contacting the furnace gases with free-oxygen...

Physical chemistry of metallurgical processes Shamsuddin

roasting 152 anode 151 interface 149 co2 146 aqueous 146 solvent 144 metallurgy 142 silicon 142 diffusion 139 precipitation 138 cal 137 po2 136 cathode 135 aluminum 134 electrolyte 133 Post a Review You can write a book review and share your experienc Other readers will always be interested in your opinion of the books you...

Study on Separation Technology of Lead and Silver from

A laboratory-scale method for treating bulk concentrate for reclaiming lead and silver was developed utilizing new hydrometallurgical technology as an alternative to the traditional pyrometallurgical processing The condition experiments of every chief segment in the whole flowsheet have been systematically investigated and then the whole hydrometallurgical processing flowsheet was determined...

PAPER OPEN ACCESS Research on the Process of Sulphatizing

The mechanism of sulphation of copper and zinc compounds is their oxidation by sulfur trioxide that generated during ferric sulphate decomposition 17 23 At the same time sulphides are oxidized in air so during roasting the following reactions may occur CuFe 2 O 4 S 3 g = CuSO 4 Fe 2 3 1 CuO SO 3 g = CuSO 4 2 8/15Cu 2S O 2 g...

PDF Transformation of Chalcopyrite in the Roasting

Sphalerite ZnS and galenite PbS are very rare minerals Sulphation roasting is one of the important pretreatment techniques that may be adopted to recover copper from the sulphid The...

ИССЛЕДОВАНИЕ ПРОЦЕССА СУЛЬФАТИЗИРУЮЩЕГО ОБЖИГА

The results of the study of the process of sulphating roasting of zinc cakes with the help of iron sulfates FeSO4 and Fe2 SO4 3 are presented in the article The elemental and phase composition as well as the microstructure of the zinc cake of PJSC Chelyabinsk Zinc Plant were studied...

MT Francisco Varela 2017 Cobre Fundición

El proceso que se pretende estudiar ha sido estudiado teóricamente previamente en AN INVESTIGATION INTO THE SULPHATION ROASTING OF ENARGITE CONCENTRATES de Brandon Tadashi Chambers en la Universidad de Queen 180 s Canadá en el año 2016 1 En aquel estudio se obtuvieron como resultados alta recuperación de cobre y hierro en la forma...

Roasting Boiler High Voltage Avaliação gratuita de

The fuel oil supply for heating up of the roasting and acid plant is provided by an fuel oil storage tank The capacity of the tank with 100 m³ is designed for one start-up procedure from cold conditions The analyses ZnS calcine boiler water and boiler feed water superheated steam prepared in the laboratory are entered in this...

Mechanism of zinc sulphide oxidation

Sep 15 1986 0183 32 The following points were established on the grounds of the thermody- namic analysis of the system Zn-S-0 1 the following consecutively stable phases of the process may be pointed out during oxidation at the roasting reactor conditions 873 K ZnS-ZnO-ZnO 2ZnS04-ZnS04 973 K ZnS-ZnO-ZnO 2ZnS04-ZnS04 1073 K ZnS-ZnO-ZnO 2ZnS04- ZnS04 1173 K...

Recovery of iron from zinc leaching residue by selective

The recovery of iron from zinc leaching residue by selective reduction roasting with carbon was studied The effects of roasting temperature duration time and mass ratio of carbon to residue on...

AN INVESTIGATION INTO THE SULPHATION ROASTING OF

research sulphation roasting between the temperatures of 300-800oC with varying oxygen and sulphur dioxide partial pressures was investigated Experiments indicated that high levels of copper extraction as well as arsenic fixation...