Utilization of magnetite tailings as aggregates in asphalt mixtures
There are literatures about the utilization of waste tailings used in asphalt mixtures. For example, Li et al. [9] evaluated the properties of asphalt mixture contained asbestos tailings at high and low temperatures and the water stability, which indicated that the asbestos tailing asphalt mixtures met with the indexes requirement of properties ...
ASBESTOS (CHRYSOTILE, AMOSITE, CROCIDOLITE, …
Asbestos is the generic commercial designation for a group of naturally occurring mineral silicate fibres of the serpentine and amphibole series.
Why are people still travelling to asbestos-riddled …
Wittenoom in Western Australia's Pilbara is riddled with blue asbestos. Yet despite the serious health risk, people are still visiting the former mining town.
Co-utilization of iron ore tailings and coal fly ash for porous
This study focuses on preparing non-sintering ceramsites using non-active solid waste materials, specifically coal gangue and iron ore tailings. Firstly, a single-factor test was conducted to determine the optimal dosage of coal gangue and iron ore tailings.
Present Situation of Comprehensive Utilization of Tailings …
The paper introduces status of tailings resource briefly, and discusses the necessities of comprehensive utilization of tailings in the current economic development situation and environmental protection in China. Based on a large number of examples and data, the approaches of comprehensive utilization and current development status are …
Utilization of magnetite tailings as aggregates in asphalt …
Synthesis of magnetite powder from iron ore tailings. R. Sakthivel N. Vasumathi D ... Environmental Science, Engineering. 2011; A large amount of asbestos tailing stacked near Yaan-Lugu Highway from K112 to K145 mileage for ... The experiments are conducted on the specimens that are made of iron tailings,which is used as the …
The Devastating Asbestos Legacy of Wittenoom, Australia
Those who worked in the asbestos mine were not the only ones who were exposed to the deadly asbestos dust. In an endeavor to beautify the town, asbestos tailings (solid waste containing asbestos) were used in every place imaginable, including: gardens, school yards, the race track and even the airport, which created a permanent …
Preparation and application of soil conditioner using iron ore tailings …
Semantic Scholar extracted view of "Preparation and application of soil conditioner using iron ore tailings-biochar composite material" by Xiaojie Hou et al.
Feasibility Study of Developing Green ECC Using …
This paper reports the results of an initial attempt of using iron ore tailings (IOTs) to develop greener engineered cementitious composites (ECCs).
Recycling | Free Full-Text | Asbestos Waste …
We investigated the potential of tailings generated from chrysotile asbestos fiber production as a source of iron, nonferrous metals, and gold. We proposed the use of granulometric separation and systematically examined different enrichment processes, namely magnetic separation, gravity concentration, and enrichment using a Knelson …
Asbestos could be a powerful weapon against …
They've placed tailings from exploratory drilling into assorted containers, and are measuring the reaction rates that result from using different chemical additives and processes under different...
Investigating the hydration characteristics of iron tailings powder
Due to excessive iron tailings production and low recycling rates, large quantities of iron tailings powder (ITP) have accumulated, leading to severe …
The Carbon Market Potential of Asbestos Mine Waste
Researchers have devised new methods to turn toxic asbestos mine tailings into innocuous piles of carbonate rock and draw down atmospheric carbon dioxide at the same time.
Thermal process and mechanism of phase transition and
Based on the chemical and mineral composition of asbestos tailings, the asbestos tailings powder was pre-fired, formed into green body and finally heat-treated to prepare glass-ceramics through ...
THE ASBESTOS INSTITUTE
Asbestos means the asbestiform varieties of serpentinite (chrysotile), riebeckite (crocidolite), cummingtonite-grunerite, anthophyllite, and actinolite-tremolite. Asbestos …
Frontiers | Effect of Iron Tailings and Slag Powders on …
When iron tailings powder accounts for 70% of mineral admixtures (iron tailings powder and slag powder), the slump and expansion of concrete are the largest, with C30 concrete reaching 230 and 525 mm, and C50 concrete reaching 230 and 550 mm.
Canada invests $12m to extract magnesium from asbestos tailings
The government has introduced new regulations to ban asbestos and products containing asbestos, but they don't apply to residues left from mining the carcinogenic material.
Pre-calcination of Asbestos Tailings and Its Recycling in …
Based on the attribute of asbestos tailings rich in silicon and magnesium, the powder of asbestos tailings was pre-calcined followed by MgO addition in the green body and finally sintered to ...
Asbestos Waste Treatment—An Effective Process to …
We investigated the potential of tailings generated from chrysotile asbestos fiber production as a source of iron, nonferrous metals, and gold. We proposed the use of granulometric …
Stabilization of iron ore tailings with cement and bentonite …
This study investigates experimentally the cement/bentonite stabilization of iron ore tailings from the Golgohar iron ore mine, which is the largest producer of raw (un-smelted) iron products in Iran. A comprehensive series of compaction and uniaxial compression tests was performed on mixtures of cement/bentonite and tailings.
Asbestos tailings as aggregates for asphalt mixture
When compared with basalt, high temperature property and the resistance to low temperature cracking of AC-25 asphalt mixture was improved by using asbestos …
HIGH-TEMPERATURE TRANSFORMATION OF ASBESTOS …
This research revealed that both temperature and carbon addition play key roles in the transformation of chrysotile asbestos tailings. Key Words—Asbestos Tailings, …
Asbestos tailings become a resource
The tailings are leached in hydrochloric acid, creating a brine from which the magnesium is extracted using electrolysis. While it cannot be called recycling, the …
Novel Preparation of ed Glass-ceramics from Asbestos Tailings …
Based on the attribute of asbestos tailings rich in silicon and magnesium, the powder of asbestos tailings was pre-calcined followed by MgO addition in the green body and finally sintered to ...
A new approach for recovering iron from iron ore tailings …
Iron ore tailings, which are important secondary resources, have outstanding latent application value in iron recovery. In this study, a pilot-scale experiment on the iron recovery from iron ore tailings was investigated using innovative technology of pre-concentration and suspension magnetization roasting (SMR), followed by magnetic …
Thermal process and mechanism of phase transition and detoxification of
Based on the chemical and mineral composition of asbestos tailings, the asbestos tailings powder was pre-fired, formed into green body and finally heat-treated to prepare glass-ceramics through the processes of crystallization and sintering.
Utilization of iron tailings as aggregates in paving asphalt …
In this research, the utilization of iron tailings as aggregates in paving asphalt mixture were investigated comprehensively from iron tailings itself to asphalt mix containing it. At first, a well-rounded comparison was conducted between iron tailings and conventional mineral aggregates, including composition characteristics, microstructure ...
Asbestos tailings as aggregates for asphalt mixture
To use many asbestos tailings collected in Ya-Lu highway, and to explore the feasibility of using asbestos tailings as aggregates in common asphalt mixtures, and properties of some asphalt mixtures were evaluated as well. X-ray diffraction (XRD), X-ray fluorescent (XRF), and atomic absorption spectrophotometry (AAS) were employed to …
Recycling of asbestos tailings used as reinforcing fillers in
In this work, asbestos tailings were recycled and used as reinforcing fillers to enhance the mechanical properties of polypropylene (PP). A silane coupling agent was used to chemically modify the asbestos tailings to increase the compatibility between asbestos tailings and polypropylene matrix.
Effect of Iron Ore Tailing and Glass Powder on Concrete …
The aim of this research is to test the characteristics of concrete by substitute fine aggregate with iron ore tailings and partial glass powder as in the place of cement.