The reduction and magnetic separation of low-grade nickel laterite was studied at varing temperatures between 1325–1400 C and a weak magnetic field of 100 mT in order to acquire high grade concentrations. The influence of reduction temperature, percentage of CaO, and atomic ratio of C/O (carbon/oxygen) were investigated

The main finding of this work was that magnetic separation is effective in recovering 48% of nickel from laterite, increasing the Ni grade in the recovered product from 1.5% to 2.9%, when prior to

2.2. Magnetic Separation Magnetic separation is carried out using Davis Tube Tester (DTT) as a magnetic separator under various para-meters such as water flow rate, magnetic induction and sample rate. The sample is poured into the water-filled glass tube (2.5cm diameter), set between two magnetic poles at 45degree of the tube angle. Magnetic

Aug 23, 2021 Low-grade saprolite nickel laterite, characterized by complicated minerals composition and fine-grained and complex dissemination, was commonly treated with a low recovery efficiency of Ni and Fe by conventional methods. Hence, an improved direct reduction and magnetic separation process was proposed. Meanwhile, the mechanisms on the enhanced growth of the Ni–Fe particles

roasting and magnetic separation, magnetic separation was tested on the three Ni laterite samples using both a low intensity (0.10 0.02 T) dry magnetic separator and a Wet High Intensity

Jan 06, 2021 Magnetic recleaning increased the grade above 58 pct Fe but decreased the recovery even more. Gravity separation and flotation were less effective than magnetic separation in cleaning magnetic products. Goethite is the principal constituent of laterite, making up about one-half of

Apr 15, 2020 In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz

1 day ago In 2018, 61.8 million metric tons of plastic waste was produced in the European Union with only 9.4 million metric ton recycled. This constitutes a huge amount of plastic waste, which rapidly needs to be addressed. One solution is to turn to magnetic density separation, which can separate plastic materials using magnetic fields, but this technique is not always effective. Rik Dellaert studied

It is known that to extract nickel from nickel-bearing laterite ore is not an easy job. By reducing roast-magnetic separation, an effective result is achieved in this research in dealing with nickel-bearing laterite ore due to its simple technology process and the high nickel recovery. Nickel-bearing laterite studied in this research is mainly characterized by fine disseminated grain size and

[13] Q. Li, Y. Cui, D. Zhu, J. Zhu, J. Pan, H. Zhang, & G. Zheng, Study on Selective reduction and magnetic separation of low grade nickel laterite ore to produce high nickel concentrate. XXV International Mineral Processing Congress (2010) p.1549–1556

Nurjaman et al. investigated the production of metallic concentrates from laterite ores with a nickel content of 1.4 wt% using sodium sulfate as an additive and anthracite coal or palm shell charcoal as a reducing agent. Magnetic separation was employed to remove the

Laterite Nickel Rotary Kiln – Hongke Heavy Industry ... gravity and magnetic separation of lead and zinc slag material magnetic separation of lead and zinc slag material. magnetic separation of lead and zinc slag material SlagWikipedia Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from

The separation factor is one distribution ratio divided by another; it is a measure of the ability of the system to separate two solutes. For instance, if the distribution ratio for nickel D Ni is 10 and the distribution ratio for silver D Ag is 100, then the silver/nickel separation factor SF Ag/Ni is equal to D Ag /D Ni = SF Ag/Ni = 10

gudulas k. magnetic separation of chromium-containing laterites and iron rich quartz, were found in the magnetic material, which was separated at 0.20T induction

The process of one-step reduction roasting and magnetic separation was adopted to prepare ferro-nickel alloy from low-grade nickel laterite ore (w(Ni)=1.52%, w(Fe)=14.08%)

Since, the ore contains both Ni and Fe, the calcination Nickel Magnetic separation of laterite is effective in altering the crystalline structure of Fe species and therefore its magnetic prop- Calcination erties, which in turn enable the selective concentration of nickel by magnetic separation that is an easy Magnetite and environmentally-friendly technique