http://www.che.com Chemical Engineering en-us 2013 Tue, 21 May 2013 20:28:50 EDT Following a positive feasibility study, American Vanadium Corp. (Vancouver, B.C.; www.americanvanadium.com) will construct the world’s first sulfuric acid heap-leach mining operation for vanadium at a specific geologic formation in central Nevada, known as Gibellini Hill. The project is currently in... http://www.che.com/chementator/hydrometallurgy_minerals/10365.html Mon, 1 Apr 2013 0:00:00 EDT Existing metallurgical processes for titanium production from ilmenite — by far the most sought-after titanium ore — are plagued by disadvantages, mainly the generation of large amounts of waste, and improvements are needed to treat ilmenite for the production of high-grade TiO2 pigment. Now, a... http://www.che.com/chementator/hydrometallurgy_minerals/10251.html Fri, 1 Mar 2013 0:00:00 EST An Indian team from the Institute of Minerals & Materials Technology (www.immt.res.in), and Utkal University (both Bhubaneswar, Orissa, India; www.utkal-university.org) has achieved significant improvement in the recovery of nickel from lateritic ore by using oxalic acid produced by the fungus... http://www.che.com/chementator/hydrometallurgy_minerals/10079.html Tue, 1 Jan 2013 0:00:00 EST Lithium producer Galaxy Resources Ltd. (Perth, Western Australia; www.galaxylithium.com) says that lithium carbonate product from its wholly owned Jiangsu Lithium Carbonate Plant has achieved battery grade quality using the company’s patented process (flowsheet). The Jiangsu plant is located in the... http://www.che.com/chementator/hydrometallurgy_minerals/9979.html Sat, 1 Dec 2012 0:00:00 EST Extraction of metals, such as lithium, from laterite ores is usually carried out through solubilization of metals by acids, such as sulfuric and hydrochloric acids. However, substantial metal recoveries from laterites have been achieved only through thermal pre-treatment of laterites, using high... http://www.che.com/chementator/hydrometallurgy_minerals/9896.html Thu, 1 Nov 2012 0:00:00 EDT India holds large reserves of low-grade sulfide copper ore containing 0.3 wt.% copper, which cannot be processed through conventional routes since the cut-off grade for treatment in concentrators is about 0.45 wt.%. India is in short supply of copper and an appropriate technology for processing low-grade... http://www.che.com/chementator/hydrometallurgy_minerals/9357.html Fri, 1 Jun 2012 0:00:00 EDT Outotec Oyj (Espoo, Finland; www.outotec.com) has introduced a new partial roasting process to purify copper and gold concentrates that are contaminated with arsenic, antimony and carbon. The process is a pretreatment stage for Cu- and Au-extraction plants, and enables the extraction of metals from ores that... http://www.che.com/chementator/hydrometallurgy_minerals/9027.html Thu, 1 Mar 2012 0:00:00 EST A carbothermal process for obtaining magnesium — developed by CSIRO (www.csiro.au) Light Metals Flagship (South Clayton, Victoria, Australia) — overcomes previous limitations to commercial viability. For several years, magnesium has been produced mainly by electrolytic routes, from magnesium... http://www.che.com/chementator/hydrometallurgy_minerals/9035.html Thu, 1 Mar 2012 0:00:00 EST A newly demonstrated system for removing trace levels of heavy metals from water combines the positive traits of two existing technologies — chemical precipitation and electrowinning — while avoiding drawbacks of each. An engineering team at Brown University (Providence, R.I.; www.brown.edu), led... http://www.che.com/chementator/hydrometallurgy_minerals/8940.html Wed, 1 Feb 2012 0:00:00 EST A facility that produces high-purity lithium carbonate for use in the growing market for electrolytes in electric-vehicle batteries has begun commercial operations in Imperial Valley, Calif. The 500-ton/yr plant, operated by Simbol Materials (Pleasanton, Calif.; www.simbolmaterials.com), is the only producer... http://www.che.com/chementator/hydrometallurgy_minerals/8602.html Tue, 1 Nov 2011 0:00:00 EDT