{"id":13739,"date":"2022-03-03T17:56:03","date_gmt":"2022-03-03T16:56:03","guid":{"rendered":"https:\/\/2025.mining-report.de\/english\/?p=13739"},"modified":"2025-01-20T15:56:06","modified_gmt":"2025-01-20T14:56:06","slug":"tomra-mining-creates-value-from-waste-at-mina-esperanza-de-caraveli-in-peru","status":"publish","type":"post","link":"https:\/\/mining-report.de\/english\/blog\/tomra-mining-creates-value-from-waste-at-mina-esperanza-de-caraveli-in-peru\/","title":{"rendered":"TOMRA Mining creates value from waste at Mina Esperanza de Caravel\u00ed in Per\u00fa"},"content":{"rendered":"

The integration of TOMRA\u2019s ore sorting technology at the mine is a story of close collaboration between two companies that share the same philosophy: make the most of natural resources towards a circular economy. Its success is testament to TOMRA\u2019s capacity to listen to the customer and develop tailored solutions for mining companies of all sizes \u2013 from large international concerns to small local operations with limited budgets.<\/em><\/p>\n

Mina Esperanza de Caravel\u00ed, owned by MTP and operated by Minera Croacia, is a polymetallic gold copper vein deposit with a mining rate of 150 metric tons per day. It is located in the district of Atico, in the Nazca – Oco\u00f1a geological gold belt in the southern part of Per\u00fa, and contains narrow veins with a rosary formation, of which over 30 have been discovered so far. The mineralization is located in vein fill fractures of hydrothermal origin and mesothermal in appearance. In 2019, Minera Croacia contacted TOMRA to explore a solution to extract value from low grade ore that was being discarded for not being economically viable, and address the environmental issue of metals left in the dumps.<\/p>\n

\"\"<\/a>
Mina Esperanza de Caravel\u00ed has a mining rate of 150 metric tons per day<\/figcaption><\/figure>\n

TOMRA and Minera Croacia share an approach to mining that recognizes the key role of mining in the transition to a circular economy. \u201cMining operations need to find ways to optimize the use of natural resources while reducing waste and their impact on the environment as much as possible. With TOMRA\u2019s ore sorting technologies this is possible,\u201d says Marco Fernandez Concha, Senior Geologist to Minera Croacia.<\/p>\n

A close collaboration for a precisely tailored solution<\/strong><\/p>\n

Minera Croacia is a small mining company for which a sensor-based ore sorter is a significant investment: <\/strong>\u201cWhen we purchase important equipment, we need to analyze the solution in great detail because we can\u2019t afford to make mistakes,\u201d explains Emilio Uribe, Senior Metallurgical Advisor at Minera Croacia. \u201cWe need it to work and deliver the results we want from the start. TOMRA has adapted to our needs as a small business with limited resources. They have been an important advisor, giving us all the support we needed with highly qualified and knowledgeable staff. They have really committed to the project and found the solution that meets our operational needs and is financially viable for us.\u201d<\/p>\n

The teams from TOMRA and Minera Croacia worked closely to precisely analyze the requirements and identify the best solution. TOMRA\u2019s Test Center in Wedel, Germany conducted three series of tests on samples from the mine to narrow down the requirements. A technical team from Minera Croacia attended the final session, which gave them a better understanding of what TOMRA\u2019s XRT technology could do for their operation. \u00a0\u201cThis project stands out for presenting different types of ores from different locations,\u201d explains Christian Korsten, who at the time was the Test Center\u2019s Manager. \u201cUsually we test one or two different ores for a customer, but with Minera Croacia we had different metallogenic veins. They were all a little bit different in mineralogy, sensor response, and in the customer\u2019s objectives for each.\u201d<\/p>\n

Excellent communication between the two companies\u2019 teams was crucial to the successful outcome \u2013 especially since Covid-19 travel restrictions limited the opportunities for face-to-face meetings. Mathilde Robben, TOMRA Key Account Manager, ensured Minera Croacia received the support and advice they needed throughout the process: \u201cWe did it all through online meetings. The management team and staff at Minera Croacia were always to the point and friendly, and together we completed this fast-track project\u201d.\u00a0 \u00a0Christian Korsten agrees: \u201cMinera Croacia had very clear objectives. All our questions were answered in a perfect, fast and professional manner, and the same applies to the discussion of the test results. This project was one of my favorites in almost 10 years in the Test Center.\u201d<\/p>\n

TOMRA COM Tertiary XRT sorter extracts maximum value from low-grade ore<\/strong><\/p>\n

Following the detailed analysis of the test results and Minera Croacia\u2019s requirements, Mathilde Robben proposed the TOMRA COM Tertiary XRT sorter as the solution: a machine perfect for the particle size range of the dump material (-25mm \/ + 10mm and -40mm \/ + 25 mm) and an investment that fits Minera Croacia\u2019s budget<\/p>\n

The test results made a clear business case for the sorter. They showed that for 1300 tons of Run of Mine material containing gold and copper, 21% are fines (-10mm) and screened out. This results into a concentration of gold and copper in the fines and therefore, this material does not need to be sorted. Of the rest of the material, 34% is enriched, going from a grade of 2.7 g\/t Au Eq. to 5.12g\/t Au Eq. \u2013 almost double.<\/p>\n

\"\"<\/a>
The TOMRA COM Tertiary XRT sorter is re-processing the mine\u2019s 800,000 tons of historic dumps. Photo: TOMRA<\/figcaption><\/figure>\n

This leaves 45% of the material discarded as waste with very low metal content, 0.41g\/t Au Eq., which addresses the environmental issue, as it contains virtually no contaminants. This also shows that maximum value has been extracted from the material, as there is virtually no gold left.<\/p>\n

\u201cThe test has shown that TOMRA\u2019s sorter can create value from material that would have gone to the waste dump, from 33% of the ROM that is too low-grade for processing to be financially viable,\u201d says Emilio Uribe, very satisfied with the results.<\/p>\n

The TOMRA COM Tertiary XRT sorter is now installed and operating since December 2021 re-processing the mine\u2019s 800,000 tons of historic dumps. It is delivering on all counts for Minera Croacia: it is now able to increase the grade of the dump material that was not considered economic, it has reduced freight costs of the operation as it is now transporting less low grade material to its processing plant, and it has successfully addressed the environmental impact of its waste materials.<\/p>\n

\u201cAll the calculations we made when we evaluated this investment are being fulfilled. The sorter\u2019s performance is perfectly consistent with the test results, and we expect it to pay for itself as planned within two years \u2013 including the other components and infrastructure of the circuit,\u201d concludes Emilio Uribe.<\/p>\n

The company\u2019s management is so impressed with the results achieved, that it is considering investing in further sorters for low grade\u00a0 ROM ore with the aim of extracting value from mineral that is currently considered marginal.<\/p>\n

Further information:
\nTOMRA Minig
\nwww.tomra.com\/mining<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The integration of TOMRA\u2019s ore sorting technology at the mine is a story of close collaboration between two companies that share the same philosophy: make the most of natural resources …<\/p>\n","protected":false},"author":25,"featured_media":13736,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[856],"tags":[686,773],"class_list":["post-13739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news-issue-01_2022","tag-tomra","tag-tomra-sorting-solutions"],"yoast_head":"\nTOMRA Mining creates value from waste at Mina Esperanza de Caravel\u00ed in Per\u00fa - MINING REPORT<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mining-report.de\/english\/blog\/tomra-mining-creates-value-from-waste-at-mina-esperanza-de-caraveli-in-peru\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TOMRA Mining creates value from waste at Mina Esperanza de Caravel\u00ed in Per\u00fa - 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