{"id":1072,"date":"2026-10-24T17:23:43","date_gmt":"2026-10-24T17:23:43","guid":{"rendered":"http:\/\/gn-desander-desilter.com\/?p=1072"},"modified":"2026-10-24T17:23:43","modified_gmt":"2026-10-24T17:23:43","slug":"1072","status":"publish","type":"post","link":"http:\/\/gn-desander-desilter.com\/index.php\/2026\/10\/24\/1072\/","title":{"rendered":""},"content":{"rendered":"

Five GNLW764-VFD large-bowl decanter centrifuge<\/a> systems from GN Separation are now operating in an overseas tailings slurry separation project. The configuration follows a phased procurement process: after the first unit completed commissioning and performance verification, the client ordered four additional units of the same model, bringing the total to five complete systems. Each system integrates a GNLW764-VFD decanter centrifuge, a 6,000-liter automatic chemical dosing unit, and dedicated screw pumps, forming a continuous, automated separation train for tailings slurry.
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\nThe GNLW764-VFD is a large-bowl decanter centrifuge<\/a> designed for high-load tailings duty. Its bowl measures 760 mm in diameter and 3,328 mm in length, giving a length-to-diameter ratio of approximately 4.38. Throughput ranges from 60 to 120 m\u00b3\/h. The main drive motor is rated at 160 kW and the auxiliary motor at 90 kW, with a maximum separation factor of 3,000 G. The bowl is constructed from duplex stainless steel, and the scroll flights are hardfaced with tungsten carbide, a combination selected for corrosion resistance and wear life in slurries containing hard solids. A circulating oil lubrication system controls bearing temperature under sustained high-load operation, and the variable frequency drive allows operators to adjust bowl speed, differential speed, and pond depth to match feed conditions and target cake dryness. The unit is mounted on a vibration-isolated base and includes automatic lubrication and safety interlocks for unattended operation.<\/p>\n

The project presented two sets of requirements that shaped the equipment configuration. The first was compliance with international tendering standards, which governed documentation, electrical specifications, and quality verification at each stage of manufacture and acceptance. The second was adaptation to high-altitude mining conditions, where reduced air density affects motor cooling and where temperature swings and dust load place additional demands on lubrication and control systems. Both requirements were addressed during design and commissioning rather than after delivery. The first unit served as the validation platform: its measured throughput, cake dryness, and solids recovery under actual site conditions established the basis for the client’s decision to standardize on the same model for the remaining four systems.<\/p>\n

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The five systems operate as a single treatment train. Tailings slurry is fed through the screw pumps to the dcanter ceentrifuges<\/a>, where solid-liquid separation takes place; the automatic dosing unit prepares and injects flocculant upstream to improve clarification and throughput. The separated solids are discharged as a transportable cake, while the clarified liquid is directed to downstream reuse or discharge in accordance with local environmental requirements. This arrangement supports three outcomes simultaneously: volume reduction of the tailings stream, recovery of water for reuse in the mining process, and compliance with discharge limits. Automation of dosing and centrifuge control reduces the operator intervention required per unit of throughput, which matters in remote sites where skilled labor is limited.<\/p>\n

The sequence from a single verified unit to a five-system installation reflects a procurement logic common in mining projects: performance is demonstrated at scale before capital is committed to full deployment. It also reflects the supplier’s capacity to deliver repeatable units within schedule, including the ancillary dosing and pumping equipment that determines whether the centrifuges<\/a> perform as specified. The project combines high-standard tendering, customized engineering for plateau conditions, and multi-unit delivery into a single reference installation.<\/p>\n

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GN Separation has supplied solids control and separation equipment to projects in more than 70 countries, with subsidiaries or branches in the United States, Australia, and Russia. Its product range covers decanter centrifuge bowl diameters from 220 mm to 760 mm, along with shale shakers, desanders, desilters, mud tanks, and chemical dosing systems, allowing complete separation packages to be sourced from one supplier. In the tailings sector, the trend toward higher throughput, tighter water recovery, and verifiable environmental compliance favors equipment that can be configured as an integrated system rather than as standalone machines. The five-unit installation described here is a working example of that approach, and it provides a performance baseline for similar tailings projects in other regions.<\/p>\n","protected":false},"excerpt":{"rendered":"

Five GNLW764-VFD large-bowl decanter centrifuge systems from GN Separation are now operating in an overseas tailings slurry separation project. The configuration follows a phased procurement process: after the first unit completed commissioning and performance verification, the client ordered four additional units of the same model, bringing the total to five complete systems. Each system integrates … Continue reading “”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1072","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/posts\/1072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/comments?post=1072"}],"version-history":[{"count":1,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/posts\/1072\/revisions"}],"predecessor-version":[{"id":1076,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/posts\/1072\/revisions\/1076"}],"wp:attachment":[{"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/media?parent=1072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/categories?post=1072"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/gn-desander-desilter.com\/index.php\/wp-json\/wp\/v2\/tags?post=1072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}