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Combination Mobile Crushing Plant

Combination Mobile Crushing Plant

Compared with fixed production lines,Combination Mobile Crusher have a shorter engineering period and rapider transition, which not only reduces the investment risk and opportunity cost of the investors, but also avoids the demolition and construction

C6X Series Jaw Crusher

C6X Series Jaw Crusher

C6X Jaw Crusher on structure and production efficiency present advanced modern technologies. Our Company's C6X Jaw Crusher can solve such problems of the existing jaw crushers as low production efficiency, difficult installation and maintenance. At pr

HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

Preparation of ferronickel from nickel laterite via coal

The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO 2 ) to adjust the melting degree of the briquette during reduction roasting.

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Behavior of Reduction and Growth of Metal in Smelting of

Behavior of Reduction and Growth of Metal in Smelting of Saprolite Ni-ore in a Rotary Kiln for Production of Ferro-nickel Alloy Hitoshi TSUJI Previous Manufacturing Department, Nippon Yakin Kogyo Co., Ltd., Oheyama Works, 606-1 Shimoyamada, Yosano-cho, Yoza-gun, Kyoto, 629-2302 Japan. E-mail: [email protected]

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Presentation Ferronikeli

From the rotary kilns, the ore is moved into the electric reduction furnaces, where approximately 50% of the sulphur in the iron/nickel alloy is removed. The remaining sulphur is removed from the liquid metal in the oxygen converters, and the iron/nickel alloy is then cast into ferronickel granules.

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Preparation of ferronickel from nickel laterite via coal

800–1000 C for 4–6 h in a rotary kiln, followed by semlting at 1550–1600 C for 2–3 h in an electric arc furnace, to separate ferronickel from slag. The process is characterized by its intensive energy consumption [15]. Preparation of ferronickel alloy via direct reduction in the rotary kiln (RK)

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CN103421922B Method for producing ferronickel by

kiln coal laterite reduction ferronickel Prior art date 2012-05-25 Application number CN201210167023.2A Other languages Chinese (zh) Other versions CN103421922A (en Inventor 李宾 Original Assignee 李宾 Priority date (The priority date is an assumption and is not a legal conclusion.

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Preparation of ferronickel from nickel laterite via coal

Jul 11, 2018· The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO2) to adjust the melting degree of the briquette during reduction roasting.

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China Ferronickel Preparation Rotary Kiln China Rotary

ferronickel preparation rotary kiln Description: ferronickel kiln The rotary kiln is used for laterite nickel ore reduction into metalic ferronickel with electric furnace, we call them RKEF (which stands for rotary kiln electric furnace process for latertic processing.

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Pilot-scale plant study on solid-state metalized reduction

Dec 10, 2017· In the pilot-scale test, a rotary kiln (inner diameter of 0.45 m and a length of 7.5 m) equipped with an oil lance for heating (Fig. 2b) was utilized.Fig. 2 shows some photographs of the pilot-scale test. In contrast to RKEF, no electric furnace is used, and high-quality ferronickel concentrates are produced, thereby reducing investment cost and energy consumption.

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JPH05125465A Production of ferronickel Google Patents

PURPOSE:To obtain a ferronickel with high reduction and recovery rates by treating an Ni ore with a specified wet process, mixing the obtained Ni oxide with a reducing material, pelleting or briquetting the mixture and reducing the pellet at a specified temp. in a rotary kiln. CONSTITUTION:An Ni ore is crushed and leached with hydrochloric acid, and the insolubles are filtered off.

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Ferronickel Preparation from Nickeliferous Laterite by

Rotary kiln-electric furnace (RKEF) smelting is currently the world-wide mainstreaming process for ferronickel production from nickeliferous laterite ore, in spite of the high power consumption. In this study, aiming to provide some meaningful guidance for ferronickel production of RKEF smelting, reductive roasting followed by smelting process

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CN106636625A Method for producing ferronickel by

The invention provides a method for producing ferronickel by adopting a rotary kiln direct reduction-RKEF (Rotary Kiln-Electric Furnace) combination method. The method comprises the following steps: drying a laterite nickel ore for later use; crushing and screening an appropriate amount of the dried laterite nickel ore, and then mixing the screened laterite nickel ore with a carbonaceous

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Preparation of ferronickel from nickel laterite via coal

The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO 2 ) to adjust the melting degree of the briquette during reduction roasting.

More

Preparation of ferronickel from nickel laterite via coal

Jul 11, 2018· The sticking phenomenon between molten slag and refractory is one of the crucial problems when preparing ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide (SiO2) to adjust the melting degree of the briquette during reduction roasting.

More

The Evolution of the Ferronickel Particles During the

Y. Kobayashi, H. Todoroki, and H. Tsuji, Melting behavior of siliceous nickel ore in a rotary kiln to produce ferronickel alloys, ISIJ Int., 51(2011), p. 35. [18] H. Tsuji, Behavior of reduction and growth of metal in smelting of saprolite Ni-ore in a rotary kiln for production of ferro-nickel alloy, ISIJ Int., 52(2012), p. 1000.

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Melting Behavior of Siliceous Nickel Ore in a Rotary Kiln

ously fed to a rotary kiln in which the stages of drying water, dehydration of serpentine, reduction and partial melting of siliceous ores are passed. Particles of ferronickel alloys, obtained as a result of reduction of Fe and Ni oxides by anthracite, grow during travel countercurrent to the flow of hot gas.

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Novel Process of Ferronickel Nugget Production from Nickel

A few researchers 6,7,8) tried to get higher grade ferronickel concentrate firstly by magnetic separation after pre-reduction in rotary kiln. Nevertheless, to avoid forming a ring against the wall of kiln, it becomes too difficult to enrich and recovery more nickel coincidently, cause the aggregation and separation of metal cannot accomplish

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China Ferronickel Preparation Rotary Kiln China Rotary

ferronickel preparation rotary kiln Description: ferronickel kiln The rotary kiln is used for laterite nickel ore reduction into metalic ferronickel with electric furnace, we call them RKEF (which stands for rotary kiln electric furnace process for latertic processing.

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FERRONICKEL PRODUCTION AND OPERATION Pyro

Nowadays, the rotary kiln-electric fi.unace (RKEF) process is largely used in ferronickel works in China due to its good adaptability for various nickel content laterite [4-6]. However, the high amount of water and gangue in laterite usually requires higher energy consumption especially for

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SNNC: A NEW FERRONICKEL SMELTER IN KOREA Pyro

and now operate at design production, a rotary kiln electric furnace (RKEF) plant including a new 94 MW /120 MVA ferronickel electric smelting furnace fed by two rotary kilns. The plant is shown in Figure 1, with ore storage on the right and the smelter on the left. It is the first nickel laterite smelting

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Separation and Recovery of Iron and Nickel from Low-Grade

The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation. The results indicated that both iron metallization extent and nickel metallization extent showed obvious linear correlation. In addition, rational roasting temperature and prolonged grinding time could enhance the overall

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Material and energy flows in rotary kiln-electric furnace

In addition, the direct reduction magnetic separation process [14], rotary kiln-electric furnace process [15, 16] and rotary kiln-melting reduction process [17,18] are used to produce the

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Rotary kiln Wikipedia

A rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process.Materials produced using rotary kilns include: Cement; Lime; Refractories; Metakaolin; Titanium dioxide; Alumina; Vermiculite; Iron ore pellets; They are also used for roasting a wide variety of sulfide ores prior to metal extraction.

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The Effect of Sulfur in Rotary Kiln Fuels on Nickel

ferronickel originates from the coal added as the fuel and the reductant during calcination in the rotary kiln. This study investigates the role of sulfur content of rotary kiln fuels on the composition of the calcine. The calcination-partial reduction experiments were conducted in a furnace at 900 oC for a 2-hour residence time.

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Modelling of Nickel Laterite Smelting to Ferronickel

Figure 4: Predicted ferronickel composition, Co, Si and C (Fe/Ni = 5) Comparison of the model predictions with industrial data is not possible on the basis of the amount of carbon in calcine, because this figure is rarely reported. Solar et al. (2008) used the iron recovery in the ferronickel as a measure of the extent of reduction, and this

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