King River Resources’ Shares Climbed up on ASX After Encouraging HPA Precipitation Test Result

King River Resources Limited’s (ASX: KRR) shares are up 13.636% during the intraday trading on Thursday, on releasing the news regarding the production of 99.99% high purity alumina (HPA) from sulphuric acid leach solutions. The company is involved in the development of specialty metals including High Purity Alumina (HPA), Vanadium, Titanium, Magnesium, Iron and Fluorspar.

In an update provided by the mining player on Thursday, 9th May 2019, the company stated that in the first HPA precipitation test, the company was able to produce high-purity alumina assaying >99.99% Al2O3 (4N HPA) purity. HPA precipitation test was designed to demonstrate whether HPA could be extracted from the sulphate leach solutions before the solution had any other metals removed or had been pre-concentrated.

With the growing demand of HPA in the market, the results of the HPA precipitation test are very encouraging for the company, as these results have a potential to add a material new revenue stream to the company’s 100% owned Speewah Specialty Metals (SSM) Project in the East Kimberley of Western Australia. The company is currently trying to include Aluminium (Al) and Magnesium (Mg) in its JORC resource statements so that these potential future revenue streams will be included in the prefeasibility studies.

The unique physical and chemical properties of HPA can be used in the production of synthetic sapphire glass used as substrates in light?emitting diode (LED) lights, semiconductors and laser markets. With the increased purity of the HPA, the quality of the synthetic sapphire can be improved, which in turn will improve the performance of light produced by the LED or lasers. Furthermore, HPA coated separators used in the manufacturing of lithium batteries can significantly improve safety and efficiency of the batteries as they withstand the very high temperature typically generated by lithium battery cells, increasing the battery’s discharge rate, lowering self-discharge and thereby lengthening battery life cycle.

The company has been investigating both vat leach of lump material and agitated tank leach of concentrates using sulphuric acid. The company has been targeting high-value specialty commodities such as High Purity Alumina (HPA), Vanadium, Titanium, Magnesium, Iron and Fluorspar. The company is currently examining several process routes to extract these commodities.

In the first HPA precipitation test, TSW Analytical trialed the Hydrogen Chloride (HCl) gas sparging method directly on the leach solution from the 5.6mm lump flooded column leach test. During the test, HCl gas was bubbled through the leach solution to precipitate Aluminium Chloride Hexahydrate (ACH). The first ACH precipitate was dissolved in water and purified by additional HCl sparging steps, and then it was calcined and purified to produce high purity alumina assaying >99.99% Al2O3 (4N HPA) purity.

The company is going to trial three different precipitation methods to produce HPA so that it can develop the best HPA process route for the SSM project.

Also Read: King River Resources adds E80/5133 to its exploration targets; stock price ascends 4.5%


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