{"id":785408,"date":"2026-05-25T04:57:45","date_gmt":"2026-05-25T04:57:45","guid":{"rendered":"https:\/\/www.metaflotech.com\/?page_id=785408"},"modified":"2026-05-27T05:32:34","modified_gmt":"2026-05-27T05:32:34","slug":"estrattore","status":"publish","type":"page","link":"https:\/\/www.metaflotech.com\/it\/products\/biopolymers\/extractech\/","title":{"rendered":"ExtracTech – Gold Recovery and Cyanide Reduction"},"content":{"rendered":"

MetaFLO Technologies \u00a0\u00b7\u00a0 Biopolymers<\/strong><\/p>\n

\n\t\t\t\t\"Scuro\"\n\t<\/figure>\n\t

Biopolymer for gold recovery and cyanide reduction by MetaFLO Technologies<\/strong><\/h2>\n\t

ExtracTech is a seaweed-derived biopolymer designed to improve efficiency in gold recovery processes by reducing interference caused by metals during cyanidation. ExtracTech helps improve gold recovery efficiency, reduce cyanide consumption, eliminate or significantly reduce lime usage, provide superior pH stability, and optimize process performance without generating toxic byproducts.<\/h4>\n\t\t\t\n\t\t\t\t\t\t\tDiscuss your project\n\t\t\t<\/a>\n\t\t\t\n\t\t\t\t\t\t\tSee how it works\n\t\t\t<\/a>\n\t

In plain terms<\/h4>\n\t

ExtracTech<\/strong> is a seaweed-derived reagent developed to improve gold recovery efficiency during cyanidation and precious metal extraction processes. The solution may deliver up to 20x lower alkalizing agent consumption and up to 35% reduction in cyanide consumption while providing superior pH stability, improved process control, and enhanced operational efficiency.<\/p>\n\t

Up to 20x<\/p>\n\t

Lower alkalizing agent consumption<\/p>\n\t

Up to 35%<\/p>\n\t

Reduction in cyanide consumption<\/p>\n\t10.5 – 11.5\n\t

Stabilizes pH within the ideal cyanidation range<\/p>\n\t

What is ExtracTech?<\/h2>\n\t

ExtracTech is a seaweed-derived liquid solution with alkalizing and oxidizing functions, developed to optimize mineral extraction in precious metal leaching processes and compatible with industrial cyanidation tanks used in gold mining operations.<\/p>\n

The solution helps improve gold recovery efficiency by reducing interference caused by metals during cyanidation while providing significant reduction in alkalizing agent dosage, with up to 20x lower consumption compared to conventional reagents depending on operating conditions. ExtracTech also helps improve leaching kinetics and may reduce cyanide consumption by up to 35%, contributing to superior pH stability, improved process control, greater operational predictability, and enhanced overall extraction performance.<\/p>\n\t

What problems does ExtracTech solve?<\/h2>\n\t

Conventional gold cyanidation and precious metal extraction processes in mining operations often face operational challenges related to pH control, reagent consumption, metallurgical recovery efficiency, and process stability. Many operations rely heavily on lime or caustic soda during the pre-lime stage to maintain alkalinity and control cyanide performance, resulting in high reagent consumption, increased operational costs, scaling, and process variability.<\/p>\n

In addition, fluctuations in pH within leaching tanks may negatively affect cyanidation efficiency, reduce gold dissolution performance, and increase cyanide demand. The presence of interfering metals such as arsenic (As), iron (Fe), copper (Cu), nickel (Ni), zinc (Zn), and manganese (Mn) can further impact process efficiency by consuming reagents and interfering with precious metal recovery kinetics. These conditions may lead to excessive cyanide consumption, lower metallurgical recovery efficiency, unstable operating conditions, and increased generation of contaminants and process effluents requiring downstream management and treatment.<\/p>\n

ExtracTech was developed to help address these challenges through a seaweed-derived alkalizing and oxidizing solution that supports superior pH stability, reduces alkalizing agent consumption by up to 20x depending on operating conditions, improves cyanidation performance, and enhances gold recovery efficiency while reducing operational variability and reagent demand in gold mining operations.<\/p>\n\t

How does ExtracTech work?<\/h2>\n\t

ExtracTech acts during the pre-alkalization (pre-lime) stage as a seaweed-derived alkalizing and oxidizing biopolymer developed for gold cyanidation and precious metal extraction systems. The solution stabilizes pH within the ideal cyanidation range of approximately 10.5-11.5, helping maintain chemical stability inside leaching tanks while reducing operational fluctuations and minimizing the risk of HCN (hydrogen cyanide) gas formation associated with inadequate alkalinity control.<\/p>\n

Its oxidizing action selectively reacts with interfering metals such as arsenic (As), iron (Fe), copper (Cu), nickel (Ni), zinc (Zn), and manganese (Mn), reducing metal interference during cyanidation and improving leaching selectivity and process efficiency. Depending on ore mineralogy and operating conditions, ExtracTech may reduce cyanide consumption by up to 35% while improving leaching kinetics and gold recovery performance without generating toxic byproducts.<\/p>\n

Unlike conventional solid alkalizing reagents, ExtracTech is supplied as a water-soluble liquid product fully compatible with existing plant dosing systems. The solution can be directly integrated into industrial operations without requiring additional CAPEX, equipment modifications, or lime slurry preparation systems. Its low dosage requirements, typically measured in ppm, allow significant operational impact even at low application volumes. Depending on process conditions, ExtracTech may also eliminate or significantly reduce lime usage while improving process predictability, operational flexibility, metallurgical efficiency, and long-term extraction performance across different ore types. Specific dosage adjustments and process optimization parameters are determined through laboratory and metallurgical testing.<\/p>\n

\n\t\t\t\t\"ExtracTech\n\t<\/figure>\n\t

Before and After application of ExtracTech<\/em><\/p>\n\t

How does ExtracTech compare?<\/h2>\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
Technical Criteria<\/th>\n Traditional Alkalinizers<\/th>\n ExtracTech Biopolymer<\/th>\n <\/tr>\n <\/thead>\n
Main function<\/td>\n Adjust pH, neutralize acidity<\/td>\n Adjust pH + oxidize metals associated with gold<\/td>\n <\/tr>\n
Main products<\/td>\n Lime (CaO \/ Ca(OH)2), NaOH<\/td>\n Seaweed-derived biopolymer<\/td>\n <\/tr>\n
Effect on pH<\/td>\n Effective<\/td>\n Highly effective<\/td>\n <\/tr>\n
pH control<\/td>\n Subject to fluctuations<\/td>\n Stable pH control<\/td>\n <\/tr>\n
Operational stability<\/td>\n Low \/ medium<\/td>\n High<\/td>\n <\/tr>\n
Preparation requirements<\/td>\n High (hydration, agitation)<\/td>\n Low-liquid direct dosing<\/td>\n <\/tr>\n
Influence on leaching kinetics<\/td>\n Neutral<\/td>\n Enhances kinetics in most cases<\/td>\n <\/tr>\n
Cyanide consumption<\/td>\n No direct impact<\/td>\n Potential reduction by up to 35%*<\/td>\n <\/tr>\n
Carbon compatibility<\/td>\n Good<\/td>\n Good<\/td>\n <\/tr>\n
Operational safety<\/td>\n Risk of dust, burns, some present corrosivity<\/td>\n Eliminates solid lime handling and dust exposure<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n