Tag: Recycling

As producers and regulators become increasingly concerned about the ‘circular economy’, there is increasing focus on regenerating waste sulphuric acid for re-use.

With the challenges facing the global refining industry, refiners should review their current practices to see how they can stay competitive and continue to thrive in today’s market. This means improving operational efficiencies and producing products at a lower cost, whilst ensuring performance and safety. Brian Visioli of Evonik explores the development of catalyst reuse and how recycled hydroprocessing catalysts can be successfully applied in tail gas treating units to deliver cost and performance gains.

Incorporating sulphur into polymers is known to improve their properties. New research is looking into the varied world of sulphur co-polymers, unlocking new materials for batteries, structural applications and clean technology.

Lithium miner Ioneer Ltd has signed a non-binding Memorandum of Understanding with Shell Canada Energy for the supply of sulphur to Ioneer for its Rhyolite Ridge lithium-boron project in Esmeralda County, Nevada. Ionner said in a statement that “securing the supply of key reagents for ore processing is an important step along the critical pathway to developing the Rhyolite Ridge project”. Under the memorandum, Ioneer will purchase up to 500,000 t/a of high-quality sulphur from Shell, which would fulfil the estimated annual sulphur requirement for the Project.

In its final report on the June 2019 explosion and fire at Philadelphia Energy Solutions in southwest Philadelphia, the US Chemical Safety Board has said that US refineries need to strengthen their safeguards surrounding the use of hydrofluoric acid, and has also recommended that the US Environmental Protection Agency take steps to improve its oversight of the chemical, which is used as an alkylation agent.

T he end of August saw a paper published in the Journal of the Royal Geographical Society by Dr Mark Maslin of University College London. Widely reported, it looked at the prospects for sulphur production in an era of declining fossil fuel use, concluding that there could be “a shortfall in the annual supply of sulphuric acid of between 100 and 320 million tonnes by 2040, depending on how quickly decarbonisation occurs”. It added that “unless action is taken to reduce the need for sulphuric acid, a massive increase in environmentally damaging mining will be required to fulfil this resource demand.”

CRU has appointed Zain Ajlouni as its regional director of sales, marketing and customer services for the Middle East and Northern Africa (MENA). She will be Dubai-based and cover the mining, metals and fertilizer sectors across the region.

The phosphate fertilizer industry is turning to production methods that are able to consume low-grade phosphate rock and/ or generate pure gypsum as a by-product. Gypsum-free processes, and technologies that capture phosphorus from waste streams, are also on the rise.

Acid output is expected to increase as copper mining and smelting increases; the copper market is moving moves from deficit to surplus, with copper output expected to rise 5% in 2022 as demand increases for electric vehicles.

Sarah Fedorchuk, Mosaic’s vice president, government and public affairs, North America, explains how recycling phosphogypsum from Florida can help America compete globally.