About Shandong Xinhai Mining Group
Shandong Xinhai Mining Group Co., Ltd. is a mining services company delivering gold milling and processing plants around the world. Founded in 1997, Xinhai reports it has served more than 2,500 mines and delivered more than 600 Mine EPC+M+O projects across more than 100 countries and regions. That's not a sales claim you should take on faith; it's a track record you can test against the pages linked throughout this guide. If you're comparing whole-plant routes, start with the gold processing plant overview, then drill into the specific flowsheets.
What EPC+M+O actually means
EPC+M+O stands for engineering, procurement, construction, plus management and operation. That's a mouthful, but the value is simple: one accountable partner carries your project from ore characterisation through commissioning, and optionally runs the plant after start-up. Xinhai operates as that partner, not a broker who hands off construction to third parties. A mine owner can use the full chain or pick individual stages. For a sense of how that plays out on the ground, see the gold milling plant page, which separates equipment supply from turnkey delivery.
Starting points for your project stage
Most readers arrive with one of three decisions to make. The choice of flowsheet belongs on the solutions pages, where CIL, flotation, milling and whole-plant recovery are compared side by side. The question of scale belongs on the capacity pages, which cover reference layouts from 500 t/d up to 3,000 t/d and beyond. Regional viability belongs on the regions pages, including Ghana and Kyrgyzstan, with supporting articles in the blog on ore testing, leaching and project development. You don't need to read everything; start with the page that matches your immediate decision, then follow the links outward.
The technical system behind the plants
Xinhai's technical capability is organised as "three institutes and five centres". The three institutes are the Mine Research Institute, the Mine Design Institute and the Intelligent Equipment Research Institute. The five centres cover pilot testing, tailings backfill, physical and chemical inspection, wear-resistant rubber and automation. This structure handles more than 70 ore types, runs around 200 mineral-processing studies a year and performs roughly 5,000 element analyses every month. The numbers come from Xinhai's published figures and reflect a working laboratory, not a marketing brochure.
- Ball mills up to 7 m in diameter
- Flotation cells up to 320 m³ per single cell
- Leaching tanks up to 20 m by 20 m
- Thickeners up to 100 m in diameter
Gold-specific capability: choose your route
Gold processing is not a single flowsheet. Your ore dictates the route, and the route dictates the equipment. Xinhai supports the four main families: gravity concentration for coarse free gold, flotation for sulphide-associated gold, CIL/CIP cyanidation for finely disseminated gold, and heap leaching for low-grade or oxide material. CIL/CIP recovery can reach 99% on suitable ores, but that number is an upper bound, not a promise; results depend on ore characterisation and testwork. If you're unsure which route fits, start with the gold recovery plant options or read the gold recovery methods blog article for a plain-English comparison.
Testwork, design and manufacturing
Every gold plant starts in the laboratory. Xinhai's CNAS-accredited laboratory and industrial pilot base run Bond work index tests, batch gravity and flotation trials, and cyanide leach tests before a single foundation is poured. The Mine Design Institute holds a Class B metallurgical qualification in China and works to JORC, NI 43-101 and VALMIN reporting frameworks. Its design team is not certified to sign off Canadian or Australian public disclosure; it produces compliant designs that your qualified person can use. Manufacturing sits across three intelligent bases totalling approximately 110,000 m², producing more than 1,000 equipment types for plants up to 50,000 t/d. To see how that manufacturing range maps to typical plant sizes, visit the capacity pages or look at a 1,000 t/d plant configuration.
Where Xinhai has delivered
Three representative gold projects illustrate the spread. In Guinea, Xinhai delivered a 15,000 t/d gold processing EPC project. In Ghana, the company provides gold mining processing contracting and operation services. In Kyrgyzstan, Xinhai supplied a 4,000 t/d gold carbon-in-pulp plant. Each of these is a different commercial model, and each one started with ore characterisation. For regional detail, see the Ghana gold plant page or the Kyrgyzstan gold plant page.