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In 2025, Xinhai Mining undertook a 1000t/d (1000-ton-per-day)zinc ore flotation project in Mongolia. The project owner is a long-standing client of Xinhai, having previously entrusted Xinhai with the construction of a 3500t/d iron ore mining, processing, and tailings project in Mongolia back in 2018. The client's decision to choose Xinhai again highlights the success of their previous collaboration and endorses Xinhai Mining's capabilities. This article provides an overview of this zinc flotation plant project.
This 1000t/d zinc flotation project out in Mongolia is a full EPC job that Xinhai took on—from doing the mine tests and figuring out the process flow, right through supplying all the gear and handling the on-site install work.
For the first stage, they're building the zinc concentrator using a pretty standard flotation setup. But thinking ahead, Xinhai left plenty of extra space around the site so that in another six or seven years, adding a second phase for molybdenum and iron processing should be straightforward—no major headaches.
Mongolia's winters are brutal, with outdoor temperatures easily plunging to -30°C or even lower. Right from the design stage, Xinhai factored in that nasty cold. They placed big pieces like thickeners and water tanks inside the main workshop building. Using regular heating systems, they keep the indoor temp steady around 3–4°C, which stops pipes and equipment from freezing up and lets production keep rolling without interruptions.
They've also got a proper tailings handling system in place. The tailings get treated according to the rules before going into the pond—everything is done in a way that's compliant and as environmentally friendly as possible.
Since the project's launch, the Xinhai installation team has overcome challenges such as severe cold and difficult working conditions, efficiently advancing the construction in phases and fulfilling service commitments with professionalism and dedication.
Equipment shipments began in August 2025, and the installation team officially mobilized on September 22nd. The first construction phase continued until November 22nd. During this period, the team grew from an initial 9 members to 20, flexibly organized into 4 work groups. Before the onset of low temperatures and high winds in November, all outdoor installation work was successfully completed. Core equipment, including the steel raw ore bin, ball mill, flotation cells, and filter press were installed and secured. Supporting facilities like the clean water tank and fine ore bin were also fabricated and welded on-site.
After the plant's heating system was commissioned at the end of December 2025, the team promptly returned to commence the second phase of indoor construction. This phase involves a team of 14 people and is scheduled for 4 months. The focus is on advancing core works such as the installation of 15m and 20m diameter thickeners, equipment operating platforms, various piping systems, reagent preparation equipment, power distribution, and automatic control systems, ensuring the project progresses smoothly according to plan.
Why did the client choose Xinhai again after seven years? Xinhai is a company focused on delivering tangible results. Every decision we make fully respects the client's input. We possess a strong understanding of local regulations. Whether it's plant construction, equipment installation, or tailings management, all aspects comply with local environmental policies, are robust enough to withstand scrutiny, and are designed to avoid any compliance issues for the client. Beyond this, our key advantages include:
The project is equipped with a comprehensive automated operation system, encompassing crushing and screening, grinding and classification, flotation automation systems, video surveillance, and a control room display system. This enables intelligent monitoring and automated operation of the production process, effectively enhancing operational efficiency and production safety while reducing labor and operating costs, aligning with the intelligent development trends in the modern mining industry.
The project includes a fully equipped on-site laboratory with sample preparation and testing equipment, as well as various glass instruments and tools. This allows for the complete workflow from sample processing to index testing to be conducted on-site. Production KPIs can be verified in real-time, enabling timely adjustments to process parameters and providing scientific data support for efficient production and quality control.
The 15m and 20m diameter thickeners used in this project are the first large-diameter thickeners manufactured by Xinhai utilizing an innovative bolted connection technology. The equipment is assembled and undergoes seal testing at the factory, requiring only bolted assembly on-site. This method offers convenient installation and disassembly, lower transportation costs, and avoids the challenging environment and potential contamination associated with on-site welding, laying a technical and practical foundation for Xinhai's expansion into high-end European and American markets.
The project site faces not only temperatures dropping below minus 30 degrees Celsius but also challenges such as the absence of installed cranes, lack of grid power connection, and concurrent operations. The Xinhai installation team flexibly adjusts construction plans, strictly adheres to installation specifications and safety standards, overcomes issues like power shortages and spatial constraints, and steadily advances the construction. They fulfill service commitments through concrete actions, demonstrating strong project management capabilities and the corporate responsibility to overcome difficulties.
In a photo sent back from the site, a team member wrote: "The tension has finally eased! A critical lift combining a mobile crane and the overhead crane. Installation inside the fully enclosed building – a record-breaker!" This sentiment captures the immense hardships faced by the site crew and fills us with pride for the Xinhai construction team.
In the Mongolia 1000t/d zinc ore flotation project, Xinhai's professional expertise is evident not only in efficient construction under extreme conditions but also in green, intelligent processes and technological innovations. With nearly 30 years of experience in the mining industry (founded in 1997), Xinhai Mining's wealth of experience, full-industry chain service capabilities, and the professionalism of our construction teams provide a solid guarantee for every project. If you are seeking a reliable partner for turnkey mining projects, Xinhai Mining is an excellent choice. We can tailor customized, green, and intelligent mining construction solutions.
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