Adopting underground mining technology, Xinhai delivers one-stop full-cycle services for the entire project, including key underground infrastructure such as shaft construction and ramp development, as well as subsequent mining and ore haulage operations.
The construction site is operating at full capacity. Multiple working faces including rauxiliary shafts and ventilation shafts are under simultaneous construction with various machinery and transport vehicles running continuously. By the end of May, the total driving length of the ramp had exceeded 750 meters, maintaining a stable monthly advance of 180 to 200 meters. The ventilation shaft and auxiliary shaft reached 115 meters and 50 meters respectively. Currently, the construction focus has fully shifted from surface works to underground development.

To ensure construction schedules are met, the project team implements a 24-hour three-shift working system. Through dynamic manpower arrangement and process optimization, tunneling, support and transportation work are carried out as streamlined assembly lines. A rigorous progress tracking mechanism is also in place. Professional management staff set working plans based on key milestones and conduct advance management on major works, enabling seamless connection between all procedures and effectively shortening the overall construction period.
A professional on-site management team of 22 members has been deployed for the project. The team includes project manager, chief engineer, safety director and other core management personnel, together with professional engineers specializing in mining, ventilation, electromechanics, geology and surveying. All construction workers hold valid professional certificates, and blasting operations are implemented in strict compliance with regulations. With a clear management structure and efficient response mechanism, the team ensures full control over construction safety, quality and progress.
More than 20 sets of professional mining equipment such as hydraulic drilling rigs, underground dump trucks, shotcrete machines and excavators have been put into operation, forming a complete mechanized operation system covering tunneling, mucking, support and ventilation. Mechanized operation has greatly improved working efficiency, reduced labor intensity and underground safety risks, supporting non-stop high-intensity construction.
Meanwhile, the six major underground safety systems, including monitoring, personnel positioning, emergency refuge, air supply, water supply and communication systems, are being built synchronously with main projects. All safety facilities are constructed and put into service simultaneously, which eliminates potential risks and extra rework costs. Combined with standardized construction and full-process quality supervision, solid foundations have been laid for the mine to smoothly move from infrastructure construction to formal production.
Currently, the most widely applied methods for enhancing gold ore leaching are primarily categorised into four main types: electrochemical enhancement, ultrasonic enhancement, ultra-fine grinding enhancement, and intensive agitation enhancement. Each technology improves leaching efficiency by leveraging its own specific mechanism of action.
This article introduces the complete beneficiation process of tin ore, explaining the characteristics of each stage in turn, including crushing and grinding, washing and desliming, gravity separation, flotation, magnetic separation, concentrate dewatering, and tailings disposal. It also elucidates the industry's mainstream combined separation scheme of "gravity separation as the main method and flotation and magnetic separation as supplementary methods."
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