Technospheric Mining of Critical and Strategic …

 — The technosphere consists of material stocks accumulated by human activities, which can include processing residue, such as slag. Various smelting processes generate slag, and some valuable elements …

Selective recovery of valuable metals from nickel converter slag …

 — High pressure oxidative acid leaching (HPOXAL) was employed to extract valuable metals from nickel converter slag. Parameters such as sulfuric acid concentration, temperature, liquid/solid (L/S) ratio, leaching time, oxygen partial pressure and particle size were investigated to optimize the solubility of metal values and improve the solid–liquid …

Extraction of Valuable Metals from Titanium-bearing …

um-containing blast furnace slag for extracting valu-able metals is shown in Fig.3. Through the appropriate process conditions, the extraction and separation of elements of Ti, Ca, Si, Al, Mg, and Fe from the tita-nium-containing blast furnace slag can be realized, so that the blast furnace slag can be reasonably utilized.

Extraction of Valuable Metals from Titanium-bearing Blast Furnace Slag

 — To realize the resource utilization of the valuable metals in the titanium-containing blast furnace slag, the process route of "hydrochloric acid leaching-electrolysis-carbonization and carbon dioxide capture-preparation of calcium carbonate" was proposed. In this study, the influences of process conditions on the leaching rates of calcium, …

From coal, a new source of rare earths

 — U.S. efforts to extract valuable elements from coal waste surge

Extraction of copper, zinc and cadmium from copper–cadmium-bearing slag

 — Abstract An intensified oxidative acid leaching of copper–cadmium-bearing slag featuring using high-efficient oxygen carrier, such as activated carbon, was investigated to achieve high leaching rate of valuable metals. The effects of leaching variables, including agitation rate, sulfuric acid concentration, temperature, slag particle …

Mechanism of Extraction of Vanadium from Vanadium Slag with …

 — The converter vanadium slag, a by-product of vanadium-titanium magnetite smelting process, is the major resource for vanadium extraction. Vanadium mainly exists in the form of FeV 2 O 4 spinel. There are several methods to extract vanadium from vanadium slag, molten NaOH roasting method, and roasting–leaching methods [5, 6].

Slag design and optimization for iron capturing platinum group metals

 — Production of petrochemical catalysts accounts for one of the largest shares of platinum group metals (PGMs) consumption; thus, recycling of spent petrochemical catalysts holds great economic value. Conventionally, PGMs are recovered through hydrometallurgical processes which have a low recovery efficiency and produce a large …

Base metals recovery from copper smelter slag by oxidising …

 — Fig. 6 shows the metal extraction as a function of leaching time at 35 L H 2 O 2 /(h·t). The Eh values measured during the leaching were 292, 358, 434, 622 and 645 mV at 15, 30 60, 90 and 120 min, respectively. Copper extraction and iron removal are proportional to H 2 O 2 dosage in the first 2 h. Around 180 min was required to obtain the ...

Recycle Metal From Slag: The Recycling Process

 — Slag is also called molten slag. The melt that floats on the surface of liquid substances such as metals during the pyrometallurgical process is composed mainly of oxides (silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide), and often contains sulfides and a small amount of metal. Slag Introduction The composition of the …

Process for Enhancing the Valuable Metal Recovery from

 — This work concerns the development of a process based on the extraction of valuable metals from EAF slag. It consists of co-grinding the slag with alkaline reagents …

Titanium Extraction from Titania-Bearing Blast Furnace Slag: …

 — The blast furnace smelting process for vanadium titania-magnetite is shown in Fig. 1.The low concentration of TiO 2 with about 1.5 wt.% in the primary mineral can be enriched into titania-bearing slag with more than 20 wt.% TiO x, 29,30 as shown by the composition range in Table I; other oxides including CaO, MgO, SiO 2, and Al 2 O 3 are …

A Review of Recent Advances in Pyrometallurgical Process

 — The pyrometallurgical industry plays a vital role in producing metals for our modern life. With growing demand of metals and declining grade of mineable ore, innovations become critical for many mining companies. It is necessary to conduct a review of recent improvements to the pyrometallurgical industry on analytical measurement …

Extraction of REEs from Blast Furnace Slag by …

 — Granulated blast furnace slag (GGBFS) is a potential resource of rare earth elements (REEs), and due to the complex mineralogy, extraction by conventional hydrometallurgical process makes it an acid-consuming method. Bioleaching is thus investigated using a chemo-organotrophic bacterium Gluconobacter oxydans (DSMZ …

The potential utilization of slag generated from iron- and …

 — Slag is the by-product of iron- and steelmaking processes. Normally, around half to one tonne of slag would be generated for yielding one tonne of rolled iron or steel (Lobato et al. 2015).It was reported that the world steel production was 1.9 billion tonnes in 2016, which suggested that at least around 1 billion tonnes of slag is produced during …

Technospheric Mining of Critical and Strategic Metals from …

 — The technosphere consists of material stocks accumulated by human activities, which can include processing residue, such as slag. Various smelting processes generate slag, and some valuable elements are concentrated in this by-product. In this review, the extraction of critical and strategic metals from non-ferrous slags is discussed. …

Review on Comprehensive Recovery Valuable Metals and

 — Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly …

Waste to wealth: Recovery of value-added products from steel slag

 — Steel slag, a by-product generated during steel production poses a solid waste disposal challenge. The same slag contains valuables such as titanium, nickel, vanadium, iron, aluminum, silica among others. The extracted components can cause productive value addition in diverse realms like wastewater treatment to semiconductor …

Recovery of valuable metals from copper slag

Process for Enhancing the Valuable Metal Recovery from

 — Steel slag is a major by-product generated by the steel industry. Although steel slags are classified as non-hazardous thermal waste according to the decree 2002–540 and US EPA [], it is well known that most metals they contain are quite toxic to living organisms and may pose serious environmental issues.In France, the CTPL [] …

An innovative method for recycling vanadium and …

 — A considerable amount (more than tens of millions of tons) of slag has been collected as discarded waste in the landfilled site of steelmaking company. Recovery of valuable metals and materials to the recycling of slag could be an urgent decision for solving this problem. To turn into usable products, slag leaching by hydrochloric acid …

Process for Enhancing the Valuable Metal Recovery from …

on the extraction of valuable metals from EAF slag. It consists of co-grinding the slag with alkaline reagents (NaOH, KOH and NaOH+ Na 2 CO 3 and KOH + K 2 CO 3) followed by heating the mixture to 600–800° C and leach-ing. The valuable metals were recovered by LDH. In this article, only the results of the leaching of valuable metals are ...

Extraction of metals from a zinc smelting slag using two

 — A two-step leaching method in combination of acid and ethylene diaminetetraacetic acid disodium (EDTA-Na2) was applied to extract metals such as Cd, Cu, Fe, Pb and Zn from a zinc smelting slag. The results show that the extraction rates of Cd, Cu, Fe and Zn in slag reach 88.3%, 54.1%, 69.6% and 54.7%, respectively, while …

Extraction and Recovery of Critical Metals from …

 — Electronic goods are a major consumer of many critical metals, including copper, nickel, tin, zinc, lead, and precious metals. The processing of end-of-life electronic equipment (E-Scrap) is becoming …

(PDF) The salt extraction process: a novel route for metal extraction

 — The present work is part of an investigation towards the development of a process route for the extraction of metal values from slag, low grade ores and other oxidic materials such as spent ...

Electric smelter

 — "Use heat and strong electromagnets to extract useful metal from slag chunks." — Smelt metal from slag description Steel slag chunks can be melted into 15 steel after 400 ticks ( 6.67 secs ) of work (modified by the smelting speed of the crafter).

Slag Recycling and Metal Recovery

Our plants utilize state-of-the-art magnetic separation equipment to maximize the recovery of metallics from the raw slag.The processing plants include the latest technology in …

Control of Copper Content in Flash Smelting Slag and the

 — To determine slag properties and the factors influencing these properties for optimization of operating conditions in the copper flash smelting process, the composition and microstructures of the quenched smelting and converting slags have been analyzed. Thermodynamic software FactSage 8.2 has been used to investigate the effects of …

Grinding & Slag Removal

Slag is a specific type of sand that's traditionally made from steel. It often forms as a coarse waste product resulting from deburring or smelting processes. To remove slag, metal processing facilities require grinding and slag removal. Slag grinding processes efficiently remove all of the heavy slag produced using rotating brushes.

Integrating Flotation and Pyrometallurgy for Recovering Graphite …

Since the current volumes of collected end-of-life lithium ion batteries (LIBs) are low, one option to increase the feasibility of their recycling is to feed them to existing metals production processes. This work presents a novel approach to integrate froth flotation as a mechanical treatment to optimize the recovery of valuable metals from LIB scrap and …