This research aims to analyze the effect of reducing agents type on nickel limonitic nickel briquettes on Ni and Fe content and recovery of Ni and Fe. The direct reduction process was conducted at 1400°C for six hours. The EDX test was conducted to analyze the elemental composition of the product, especially for Ni and Fe content. On the other hand, the XRD can be applied to analyze the compound formed in the product Greencoke will produce the highest Ni …
Ring Formation in the Smelting of Saprolite Ni-ore in a Rotary Kiln for Production of ... proposed in the previous paper has been examined by the firing experiment of the anthracite and limestone composite Ni-ore briquettes using the batch type experimental kiln. The rapid increases in the degree of reduction and CO gas content and the ...
21-10-2019· The aim of this article is a laboratory investigation the possibilities of recovering Fe, Ni, and Cr oxides by di erent reducing agents in slag ing briquettes. Di erent reduction agents were mixed with mill-scale into briquettes used for EAF slag ing. Moreover, the briquettes' capacity for slag
ni ore briquette reduction in indonesia. This research aims to analyze the effect of reducing agents type on nickel limonitic nickel briquettes on Ni and Fe content and recovery of Ni and Fe. The direct reduction process was conducted at 1400°C for six hours.
The increasing demand for stainless steel and the scarcity of sulfide nickel ore affect the increase of laterite nickel ore processing. One of the processes that has been proven can be applied to process laterite nickel ore is direct reduction. In the direct reduction, the reduction atmosphere was adjusted by controlling the volume of CO and CO2 from carbon source materials, such as coal ...
(80 kg/t of ore), and thereafter 700 kg-dry briquette of pil-low type 30×25×15 mm were produced: the additions of anthracite is 4 A0 about 180 kg/t of ore for the consumption of anthracite by CO2 contained in the LPG combustion gas-es; A0 is the quantity of anthracite for the reduction of Ni and Fe in Ni-ore. Kiln simulation experiments have been
The reduction of briquettes prepared mixtures of Rossetta ilmenite and coke breeze in ... of the briquetting of ilmenite ore concentrate as well as establish the kinetic reduction of Rosetta ilmenite concentrate by coke breeze. 2. Materials and Experimental ... which was suspended under the electronic balance by Ni-Cr wire.
The Direct Reduction (DR) The Electric Arc Furnace (EAF) The Blast Furnace (BF) plants were built for the production of large amounts of steel. The beginning of a melting metallurgical process is composed of the reduction of iron ore. In the BF, Cast Iron is produced and after that, by blowing oxygen in the converter, it is turned into the steel.
Ore-based metallics - merchant pig iron (MPI), direct reduced iron (DRI), hot briquetted iron (HBI), granulated pig iron (GPI) - are value-adding feedstock materials for the iron & steel and ferrous casting industries and IIMA has as its principal objective their promotion through product and market support, innovation, education and regulatory support.
20-05-2012· Effect of reduction temperature and duration. The laterite briquettes were reduced at temperatures between 900 °C and 1250 °C to determine the effect of temperature on nickel concentration. Fig. 1 shows the nickel and iron enrichment in …
03-04-2018· The Briquette of nickel ore, coal, Na 2 SO 4 mixtures incorporated in the crucible with bed, then reduced for 6 hours at the temperature of 1200 °C. 1400 °C, and 1400 °C. The result of the research shown that the highest increase of Ni content and Ni recovery value was in the reduction temperature of 1400 °C with the increase of 3.44 %, and the recovery value of Ni …
ni ore briquette reduction sienameteo. Sintering of the Briquette Egyptian Iron Ore with Lime and Reduction of it via Hydrogen Naglaa Ahmed El-Hussiny(1),I. Also the reduction of these briquettes via hydrogen was studied and the model of reduction was puttedin this paper. iron ore briquette properties ...
Nickel is a silvery-white metal with a slight golden tinge that takes a high polish. It is one of only four elements that are magnetic at or near room temperature, the others being iron, cobalt and gadolinium.Its Curie temperature is 355 °C (671 °F), meaning that bulk nickel is non-magnetic above this temperature. The unit cell of nickel is a face-centered cube with the lattice parameter of ...
20-05-2012· Highlights Selective reduction and magnetic separation was conducted on low grade nickel laterite ore. High grade nickeliferous concentrate could be produced from these laterite ores. The addition of calcium sulphate promoted nickel concentration. Nickel was mainly concentrated into a γ Fe–Ni phase in the reduced ore. Calcium sulphate improved the growth of γ Fe–Ni phase.
diameter were used. Reduction with gas mixtures of hydrogen and carbon monoxide give rates intermediate between those of the pure gases.[8] The aim of this work is to study the briquetting the high barite iron ore and reduce it in static bed by hydrogen . Keywords: High bariteiron ore reduction kinetics, diffusion model,,
For instance, Japanese producers make briquettes to produce DRI; iron ore and coal are used as reducing agents, and in turn, the coal is used as a binder. This is an option for processing such ores. Tanaka et al, used a ratio of C/O =1 and reported interesting results for the reduction of iron ore [ 4 ].
reduction of lateritic iron ore briquette using coal bed reduct or. Proceedings of the 1st International Process Metallur gy Conference (IPMC 2016) AIP Conf. Proc. 1805, 040007-1–040007-7; doi ...
ni ore briquette reduction Thereductionof thebriquetteslow grade manganeseorewith coke breeze was performed in thermogravimetric apparatus. This scheme is …
All effective methods of direct reduction actually use the same process: rich iron ore (fine concentrate or pellets) is reduced by a special gas mixture up to the iron content of 85-90%. This explains why the production of direct-reduced iron is mainly concentrated in countries with large reserves of oil (oilwell gas), natural gas and iron ore, as well as limited scrap resources.
The Briquette of nickel ore, coal, Na 2 SO 4 mixtures incorporated in the crucible with bed, then reduced for 6 hours at the temperature of 1200 °C. 1400 °C, and 1400 °C. The result of the research shown that the highest increase of Ni content and Ni recovery value was in the reduction temperature of 1400 °C with the increase of 3.44 %, and the recovery value of Ni equal to 86.75 %.
Hot briquetting is a reliable, fully developed industrial concept for the passivation of direct reduced iron produced with the various processes of direct reduction. Because, during hot briquetting, the large specific surface area of direct reduced iron is drastically reduced, the well known problems caused by reoxidation, overheating are avoided.
The life of Ni. CONTENTS ABOUT NICKEL 3 NICKEL PROPERTIES 4 NICKEL RESOURCES AND RESERVES 7 ... the ore looked red-brown like copper – but it was too difficult to mine. 3. ... and briquettes, as well as carbonyl nickel. Nickel Class II comprises nickel pig iron and
Ferro-nickel granules were produced from nickel laterite ore/coal composite briquettes by high-temperature direct reduction.The effects of roasting temperature,roasting time,C/O(carbon/oxygen) molar ratio and flux amount on the grades and recovery rates of nickel and iron as well as on the quality of ferro-nickel granules were studied.The grades of nickel and total iron in the granules are 9.4 ...
Preparation of briquettes by adding CaF2 reagent into the Australian iron ore powder. The structure and morphology of iron ore briquettes during various reduction stages (i.e., Fe2O3→Fe3O4, Fe3O4→FeO, and FeO→Fe) were observed via an ore microscope and scanning electron microscopy. The results showed that CaF2 reacted with SiO2 to form CaO and SiF4 gas during the roasting process. The ...