How quicklime used in mining industry
14/09/2023 - SHC Techmicom - 0 Comment
Quicklime powder is a crucial component in various mining operations due to its ability to chemically react with water, resulting in a highly exothermic reaction. Also known as calcium oxide (CaO), quicklime plays a vital role in the process of extracting minerals from ore deposits.
Quicklime (CaO-Calcium Oxide) – SHC Group
Chemical reagent: Quicklime, also known as calcium oxide, plays a crucial role in the mining industry due to its various properties and applications. Firstly, quicklime is commonly used in mining as a chemical reagent in the recovery of gold and silver. This process, known as the cyanide leaching process, involves the use of a dilute cyanide solution to dissolve the precious metals from the ore. Quicklime is then added to the solution to adjust its pH level and enhance the efficiency of the extraction. Moreover, quicklime is utilized in the treatment of acid mine drainage (AMD), a common environmental issue in mining operations. When water interacts with sulfide minerals present in mine waste or underground workings, it can produce a highly acidic solution. Quicklime is added to neutralize the acidity and raise the pH, leading to the precipitation of heavy metals and the restoration of water quality.
Quicklime for Gold Mining Process
Control and prevention of mine fires and explosions: Another significant application of quicklime in mining is the control and prevention of mine fires and explosions. Underground coal mines can experience spontaneous combustion due to the oxidation of coal, resulting in the release of toxic gases and the potential for explosions. Quicklime is utilized in various ways to potentially eliminate or reduce such risks. It can be manually spread over the coal face to absorb moisture, which hinders the oxidation process, or it can be mixed with water to create a slurry that is injected into the coal seam. This slurry acts as a moisture barrier and greatly reduces the chances of spontaneous combustion.
In conclusion, quicklime is an essential chemical compound used in the mining industry due to its various applications and properties. From its role in gold and silver extraction through the cyanide leaching process to its use in neutralizing acidic mine drainage, quicklime provides valuable assistance in ensuring efficient and safe mining operations. Additionally, its ability to control moisture and prevent the spontaneous combustion of coal helps maintain a secure environment underground. Overall, quicklime’s versatility and effectiveness make it an indispensable resource for the mining industry.
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VIET NAM TECHNOLOGY MINERALS JSC – SHC GROUP