Y. Yang
12 records found
1
Towards a circular nickel-plated steel (NPS) industry
A method to selectively dissolve nickel coatings from NPS in ammoniacal solutions.
A patent pending ammonia-based hydrometallurgical method is developed to selectively leach nickel coatings from the Nickel-Plated Steel sheets (NPS). The leaching process starts with the removal of the passive nickel oxide film by Na2S2O3.5H2O addition into the solution, followed
...
In the current industrial age the amount of secondary material resources is expected to increase at a fast rate. Within the steel supply of these secondary resources, the share of End-Of-Life(EOL) scrap will become bigger over time compared to new industrial scrap.
The waste ...
The waste ...
Recycling of Blast Furnace Sludge through Carbochlorination and Direct Reduction
Increasing Material Circularity in Ironmaking
Aluminium recycling is a crucial process when it comes to recycling of metals. To make the metal industry part of a circular economy, this process must be efficient and for the interest of companies it should be economical. Singulation is such a process which does both the tasks.
...
Jarosites are an Fe-rich waste product from the Zn industry. They contain toxic heavy metals like Pb, Zn, Cu, Ni, and are consequently disposed of in regulated ponds. With Zn demand projected to continually increase in the future, it is anticipated that by 2023, the Fe content in
...
Zinc recovery from steelmaking wastes
Recycling in HIsarna
During the production of steel, a dust waste stream is created that contains a significant amount of zinc which makes it difficult to treat and to recycle. Various furnaces have been developed that can deal with those dusts like rotary hearth furnaces and the DK process but none
...
Zinc smelters in the European Union are now facing a lot of problems, especially under the attack of the Covid-19. This study reviewed the situation of the zinc smelting industry in the EU, including production methods, application of raw materials, pollution control, and waste t
...
Zinc vapourisation from sludge wastes under thermal processing conditions
Zinc enrichment in HIsarna flue dust
HIsarna is a new furnace technology in the steel industry, featuring a large reduction of CO2-emissions of up to 80%, and offering larger tolerances for gangue materials. Additionally, it has potential for zinc enrichment in the flue dust, as it can quickly vapourise z
...
Critical raw materials in the city
Recycling perspectives for cobalt in The Hague
Cobalt is one of the most important critical raw materials for emerging technologies. There are many incentives for analysis of this metal, from increasing demand for rechargeable batteries, rising prices and social issues involved. This paper is the first attempt to perform a su
...