Innovative Recovery of Gallium and Zinc from Corundum Flue Dust …

It was found that the maximum Ga and Zn leaching efficiencies of 81.22% and 96.72% were obtained at optimum leaching conditions: the leaching temperature of 90°C, the leaching time of 60 min, 3 M H 2 SO 4, the solid-to-liquid ratio of 1:5 (g/mL), and the ultrasound power of 750 W. In all cases, the leaching effect of Zn is not significantly ...

Removal of impurity elements from waste lithium-ion

lithium in form of slag and dust [9]. Hydrometallurgical methods for recovering valuable metals from LIBs include chemical leaching [10−11] and biological leaching [12−13]. In chemical leaching, reducing agents are used in an acid medium to dissolve the valuable metals. Common acids including inorganic acids (HCl, H 2SO 4 and HNO

Zinc in Secondary Dust of Rotary Hearth Furnace

This work focuses on the leaching of blast furnace (BF) dust under normal conditions of temperature and pressure in dilute sulphuric acid. Leaching experiments were carried out using a solution of ...

One-step extraction of zinc and separation of iron from …

The leaching residue (mainly Fe 2 O 3) can be used as raw material in the iron-making industry. The flow chart of the technological process is shown in Fig. 1. The iron-rich leaching residue can be utilized to produce high-value materials [34], [35], [36]. Download: Download high-res image (206KB) Download: Download full-size image; Fig. 1.

A Review of the Comprehensive Recovery of Valuable Elements …

Copper smelting open-circuit (CSO) dust contains various valuable metals, such as copper, lead, and zinc, as well as undesirable toxic elements such as arsenic. Thus, the comprehensive recovery of valuable elements from CSO dust is highly significant from both economic and environmental perspectives. In this review, …

20 Tips for How to Get Rid of Dust at Home

Learn 20 easy ways to create a dust-free home, from using doormats and humidifiers to vacuuming properly and changing air filters. Find out how to reduce dust …

Recovery of Copper, Lead, Zinc, and Arsenic from Copper Smelting Dust

The separation of Cu, Pb, Zn, and As from copper smelting dust through oxidative alkali leaching and sulfide precipitation, as well as the subsequent recovery of As through calcification precipitation and carbothermal reduction, were realized in this study to utilize resources from and safely treat copper smelting dust. The binding behavior of …

Mechanism Analysis and Experimental Research on Leaching …

Zinc oxide dust (ZOD) is an industrial solid waste produced in the production process of wet smelting Zn, with large output and great pollution to the environment. The recycling of metallurgical solid waste such as zinc oxide dust is very important to achieve the sustainable development of the circular economy. An …

Pyrometallurgical removal of zinc from basic oxygen steelmaking dust

This study aimed to optimise metal extraction from secondary hazardous sources, such as basic oxygen steelmaking dust (BOS-D). Initially, three batch systems approaches, including bioleaching using Acidithiobacillus ferrooxidans, chemical leaching using choline chloride-ethylene glycol (ChCl-EG) and a combined approach were …

Best Air Purifier for Dust: 12 Highly Rated Models in 2023

In addition to dust removal, it effectively eliminates odors, pet dander, and volatile organic compounds (VOCs) from the air. Specs. Specification. Honeywell HPA300. Coverage area: 465 sq. ft. CADR: 300 CFM (Smoke) 300 CFM (Dust) 300 CFM (Pollen) Filter Type: Pre-filter Carbon and True HEPA filters.

Zinc in Secondary Dust of Rotary Hearth Furnace Recovered …

In this paper, water leaching and acid leaching were combined to treat secondary dust of a rotary hearth furnace to achieve zinc enrichment. First, the solubles ZnCl 2, KCl, and NaCl in the dust were dissolved into the water solution through water leaching treatment, and separated from the other insoluble components in the …

Removal of cadmium and arsenic from Cd-As-Pb-bearing dust …

As a byproduct of lead metallurgy, Cd-As-Pb-bearing dust, is a hazardous waste.This paper proposes a coprecipitation method for Cd and As removal and applies it to dust disposition. First, a thermodynamic analysis of the Cd 2+-AsO 4 3−-H 2 O system was conducted, and the predominant areas of solid phase, including Cd 5 H 2 (AsO 4) 4, …

Recovery of Valuable Metals from High-Content Arsenic …

A. Effect of leaching temperature on leaching rate As shown in Fig. 5, the leaching rates for elements, such as Cu, Zn and In, are 80, 75, 35% respectively at 90 °C under atmospheric pressure. Meanwhile, Pb, Bi and Sn can barely be leached. The leaching rates of Cu, Zn and In has been raised dramatically by pressure leaching.

Leaching and Recovery of Metals

Leaching is the key unit operation in metallurgical processes. It is the dissolution of metals from their natural ores into a liquid medium. Leaching processes are classified based on the method used for the leaching of metals, i.e. hydrometallurgy (chemicals) or bio-hydrometallurgy (microbial mediated leaching).

DIY vs. Professional: Which Is the Best Way to Remove Cement Dust …

Alternative Methods for Cement Dust Removal. While vinegar and commercial cement removers are effective, alternative methods and tools can provide added flexibility and options. Consider trying: Steam Cleaning: Invest in a steam cleaner, which can effectively soften and loosen stubborn cement dust. Steam cleaning is …

Recovery of Zn and Ge from zinc oxide dust by

Zn and Ge were selectively extracted from zinc oxide dust (ZOD) by the ultrasonic-H 2 O 2 (UH) combined oxidation-leaching process. In the leaching process, the effects of the dosage of H 2 O 2 (6–29.5 mL), ultrasonic power, initial acidity (100–200 g L −1), liquid/solid mass ratio (4–8 : 1), leaching temperature (50–90 °C), and leaching time (30–240 min) …

Separation and recovery of arsenic from arsenic-bearing dust

The As removal ratio reaches 86%, while the Sb leaching ratio is limited to 0.3%, confirming the high selectivity of HNO 3 leaching. The leaching residue is composed of cervantite (Sb 2 O 4) and Sb(III)OHN. By calcining the leaching residue in the air at 200 °C, it can be converted to a mixture of cervantite and valentinite (Sb 2 O 3).

Removing Dust Before Finishing

Learn why wiping or vacuuming is better than blowing off the dust before applying finish to your wood projects. Blowing off the dust can damage the wood and …

Remove All Sanding Dust Before Finishing Wood

Arsenic removal from acid extraction solutions of copper smelting flue dust

Multi-metal extraction of flue dust from copper smelting is being pursued to meet the increasingly appealing environmental requirements of our modern life. In this paper, the thermodynamic analysis of acid leaching solution was carried out. Ferric arsenate deposits were found in the range of pH = 0–11.63, in the form of FeAsO 4 and …

How to Get Rid of Dust 2021 | The Strategist

Learn the best tools and methods to dust your home effectively and efficiently, from microfiber cloths and cleaners to Swiffer dusters and mops. Find out …

Arsenic removal from acid extraction solutions of copper smelting flue dust

Li et al. (2015) adopted acid leaching treatments with flue dust as the raw material, but the treatment effect was sub-optimal. Valuable metals were not separated or recovered at high rates. Xing et al. (2014) used sulfuration roasting to treat highly concentrated As-containing Zn dust. The As removal rate was only 70.39%.

Crude Zinc Oxide Dust Recovery-Slag/Dross Recovery

Crude zinc oxide (C.Z.O.) is one of the important resource of zinc metal extraction. The main source of crude zinc oxide includes: a. zinc dust collected from EAF (electrical arc furnace); b. fume dust collected from zinc leaching residue treatment by waelz kiln; c. zinc fume dust collected from lead slag treatment by fuming furnace; d. zinc skim from steel …

Selective removal of arsenic from high arsenic dust in the …

A selective removal of arsenic from lead‑antimony-zinc-containing high arsenic dust in NaOH-S system was proposed. • NaOH-S system could solve the problem of high antimony leaching efficiency in the process of arsenic removal in NaOH-Na 2 S system.. 98.17% of Sb, 99.85% of Pb and 99.75% of Zn remained in the leaching …

Removal of cadmium and arsenic from Cd-As-Pb-bearing dust …

During the disposition of Cd-As-Pb-bearing dust, 84.2% Cd and 69.0% As were leached from the dust via H 2 O-H 2 O 2 leaching, and subsequent Cd and As were satisfactorily removed with precipitation efficiencies higher than 99.7% based on coprecipitation, indicating that the novel method is highly efficient. Moreover, the method …

Selective leaching of arsenic from copper converter flue dust …

The recovery of metals without generating secondary waste is a critical focus in the management of hazardous copper smelting dust. To tackle the challenges associated with arsenic-containing solid waste and waste acid generated by traditional recycling processes, we propose a two-stage roasting process that prioritizes low-temperature …

Alternative Method for Treating Electric Arc Furnace Dust

The technical and environmental aspects of treating electric arc furnace dust (EAFD) using a novel process including alkaline roasting and organic acid leaching were evaluated and compared to the globally applied conventional Waelz process. The global warming potentials of the roasting–organic acid leaching process (with co …

7 Simple Tips for Woodshop Dust Control

Dust particles are smaller in diameter than a human air and can do serious damage to your lungs; Stopping inhalation of dust is a …

How to Get Rid of Dust, According to Cleaning Pros

Remove heavy dust from ceiling, floor or appliance vents with a soft-brush vacuum attachment or electrostatic mop, like the Swiffer Sweeper).

Leaching behavior of metals from high-arsenic dust by …

Arsenic is selectively extracted from high-arsenic dust by NaOH–Na 2 S alkaline leaching process. In the leaching arsenic process, the effects of alkali-to-dust ratio, sodium sulfide addition, leaching temperature, leaching time and liquid-to-solid ratio on metals leaching efficiencies were investigated.

Hydrometallurgical Treatment of Copper Smelting Dust …

In this study, we report the recovery of metals from copper smelting dust by oxidation leaching and fractional precipitation technology. Under the optimum conditions, the leaching efficiencies achieved for Cu, As, Fe, Cd, and Zn are 93.4%, 94.2%, 39.7%, 98.1%, and 90.7%, respectively. Fractional precipitation technology is then …

Zinc Extraction from Industrial Waste Residue by Conventional Acid Leaching

Ma AY, Zheng XM, Li S, Wang YH, Zhu S (2018) Zinc recovery from metallurgical slag and dust by coordination leaching in NH 3 –CH 3 COONH 4 –H 2 O system. R Soc Open Sci 5:180660. Article Google Scholar Chen WS, Shen YH, Tsai MS, Chang FC (2011) Removal of chloride from electric arc furnace dust. J Hazard Mater …

m/sbm vibrating screen numerical control agent pregnant leaching …

Contribute to legaojm/m development by creating an account on GitHub.

Optimizing the Leaching Parameters and Studying the …

The study of copper (Cu) recovery is crucial for the entire recovery process of waste printed circuit boards (WPCBs), and Cu can be leached efficiently via a sulfuric acid–hydrogen peroxide (H2SO4–H2O2) system. To achieve high Cu recovery, it is important to evaluate the parameters of the leaching process and understand the Cu …

Extraction of copper by leaching of electrostatic precipitator dust …

The paper deals with the extraction of copper from the deposited material of the liner of the electrostatic precipitator (ESP) of the copper smelter plant. These precipitates of ESP liner (ESP dust) generally contain mixed phases of copper and arsenic. An attempt is made to extract copper from ESP dust, subsequently removing arsenic …

Effect of different leaching solutions on removal efficiency …

By using different acidic solvents and leaching conditions to treat the bag dust, the best leaching conditions of K, Na and Zn elements were explored. The results show that the optimal leaching conditions of harmful elements in water solution are: 4 ml/g liquidsolid ratio, 50°C temperature, 30 min stirring time.