Semantic Scholar extracted view of "Innovative methodology for comprehensive and harmless utilization of waste copper slag via selective reduction-magnetic separation process" by Zheng-qi Guo et al. ... In this work, an innovative and carbon-free smelting reduction process is proposed to recycle valuable metals from …

The calcined sample at 800℃ requires magnetic intensity of about 7000 Gauss, whereas the reduced bauxite needs less than 2000 Gauss for separation of iron and the product achieved contains 76% ...

Table 1 shows the result of ICP-OES analysis of the sample with magnetic separation. The major elements of the feed material were Cu and Fe, and the compositions were about 6 wt% and 27 wt%, respectively. As shown in Fig. 1, the Fe in the feed material was confirmed to be magnetite (Fe 3 O 4) in a metallic Fe phase.Fe 3 O 4 is …

Local Calls(914) 381-7500. Magnetic separation is a process used to separate materials based on their magnetic properties. Essentially, materials that are magnetic can.

Zeolites are widely used in diverse applications, including the removal of heavy metals from wastewater. However, separating fine-sized zeolite particles from treated water is often a challenge. In this work, a novel method utilizing a colloidal polyvinyl alcohol (PVA) solution to bind iron oxide nanoparticles to a Linde Type A (LTA) zeolite was …

A comprehensive recovery process for the selective separation and enrichment of copper, zinc and iron minerals from a polymetallic ore was developed, which consisted of copper flotation, zinc flotation, and iron magnetic separation, and the adsorption mechanism of the copper collector Z-200 (O-isopropyl-N-ethyl …

@article{Duan2022ZeroVI, title={Zero valent iron or Fe3O4-loaded biochar for remediation of Pb contaminated sandy soil: Sequential extraction, magnetic separation, XAFS and ryegrass growth.}, author={Lun-chao Duan and Qianhui Wang and Jining Li and Fenghe Wang and Hao Yang and Binglin Guo and Yohey Hashimoto}, …

The Waelz slag generated during electric arc furnace dust processing is an iron-rich product with significant amounts of iron, zinc and copper. About 600–800 kg of the Waelz slag is generated per ton of the dust processed. The Waelz slag samples from two different plants were thoroughly characterized using inductively coupled plasma …

Iron ore tailings are industrial solid wastes generated from mineral processing. The disposal of iron ore tailings leads to environmental threat and serious security because of their tiny particle size and large storage. In this paper, suspension magnetization roasting and magnetic separation technology were utilized to recover …

Here we present the results of preliminary studies on the elimination of the bioavailable fraction of copper (Cu) and zinc (Zn) from contaminated soils, by taking advantage of enhanced corrosion of zero-valent iron (ZVI) particles and their strong magnetic characteristics to retrieve the formed heavy metal-ZVI complexes from treated …

By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang [10] obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang [11 ...

A technique comprising coal-based direct reduction followed by magnetic separation was presented to recover iron and copper from copper slag flotation tailings. Optimal process parameters, such as re-ductant and additive ratios, reduction temperature, and reduction time, were experimentally determined and found to be as follows: a …

With increasing crystallized iron powder, the amount uninvolved in the reaction increased, and more clean coal was achieved after magnetic separation. 2.3.4. Summary of the single-factor experiments. In conclusion, the reduced iron powder is involved in the reaction, and the desulfurization effect of magnetic coal separation is …

The grinding-magnetic separation results of reduced briquettes show that concentrate containing 3.25 % Ni, 1.20 % Cu and 75.26 % Fe is obtained and selective enrichment is achieved with a recovery of 82.20 %, 80.00 % for nickel and copper respectively, while the recovery of iron is only 42.17 %.

A combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of modified hydroxyl oxime acid …

The reserve of the copper-oxide-bearing limonite ore (COBL ore) in Yulong Copper Co., Ltd. is up to 20 million tons with 1.79% of copper content. The characters of the copper resources in the COBL ore are high-proportioned oxidation state (99.98%) and combined state (84.83%). The combined copper oxide is mainly copper-oxide-bearing …

The value for copper tailing is 29 (UI feed ), which means that there is a large distribution of particle sizes that implies a challenge to achieve a good performance in magnetic separation ...

The removal of iron ion from leaching solution is critical for the recovery of value metals, with the method of choice commonly being crystallization (precipitation). This paper summarized the new improvements in iron removal by precipitation methods in recent years and proposed a novel process, magnetic seeding and separation. The …

Abstract and Figures. High Gradient Magnetic Separation of small (5-38 µm) weakly magnetic copper mineral particles from a copper concentrate and ore has been performed. In previous work coarser ...

Copper slag is a solid waste that has to be treated for metals recovery. In order to recover iron from copper slag, the technology of carbothermic reduction and magnetic separation was developed.

Low-intensity magnetic separation and pulsating high-gradient magnetic separation were, respectively, proposed to recover magnetite and limonite from the residue, and under the optimized ...

The roasting-magnetic separation process is the route to convert the metals into a desired phase, which can be easily separated from the slag through mixing copper slag with calcium oxide as ...

Superconducting magnetic separation is a method of mineral separation by a magnetic separator with superconductor as a magnetic system. Its application is mainly with the aid of a superconducting magnetic separator equipment. Following the birth of the first superconducting magnet in 1961, J.D. Bannister of the United States invented …

The recovery proportion of the immobilized Se was 34.2 ± 0.1% and 92.5 ± 0.2% through wet and dry magnetic separation with 1 g L −1 ZVI added, respectively. The 16 s rRNA sequencing revealed the variations in the microbial communities in response to ZVI and Se, which the magnetic separation could potentially mitigate in the long term.

The matte sample was crushed, wet ground and then magnetic separated to produce magnetically susceptible concentrate (mainly Co–Fe alloy). 95.75% of cobalt was recovered by magnetic separation and 87.8% of copper and 44.39% of iron remained in the tailings. The concentrate was leached further by sulphuric acid.

BCL slag contains both copper and iron which are of interest and subsequently copper as mentioned can be recovered using flotation and iron be recovered using magnetic separation . talks about past work on recovery of iron from copper slag using direct reduction – magnetic separation which yielded iron concentrate of 90.68% …

Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully …

The concentration of low-grade magnetic iron ores, separating the magnetite crystals from the gangue by the use of magnets, is a field of work in which the lessons taught by the development of the porphyry coppers can be studied to advantage. ... The demonstration of the dry process of magnetic separation is the result of 14 …

Semantic Scholar extracted view of "A novel process to upgrade the copper slag by direct reduction-magnetic separation with the addition of Na2CO3 and CaO" by Siwei Li et al. ... Copper smelting slag is a useful secondary resource containing high iron and copper, ... In the present work, the effects of amount of coke, reduction …

Abstract. To comprehensively reuse copper ore tailings, the recovery of γ-Fe 2 O 3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, …