In central-western Africa lies a dazzling rising star—Nigeria. As one of Africa’s major economies, Nigeria boasts abundant fossil energy resources as well as a rich and diverse array of mineral resources. Back in the 1930s, the country’s gold production had already reached 10 tons. However, during the 1970s, soaring oil prices brought about high profits, prompting the country to shift its development focus sharply toward the petrochemical industry, leaving the gold market at a standstill. “Thirty years east, thirty years west”—today, coal mining and related industries, including gold, have become a vital pillar of Nigeria’s economic development. The economies of China and Nigeria are highly complementary, with enormous potential for cooperation. The implementation of the Eight Major Actions of China-Africa Cooperation has laid a solid foundation for deepening bilateral collaboration between the two countries.

Jinpeng Mining Machine

As a leading enterprise providing EPC general contracting services for mining operations in China, Jinpeng Mining Machinery has closely followed China’s footsteps and actively and proactively participated in the development and infrastructure construction of China’s coal industry in Nigeria. After months of arduous efforts by Jinpeng Mining Machinery, an intelligent gold cyanide leaching plant with an annual processing capacity of 715,000 tons has now risen proudly in beautiful West Africa!

For this project, our company provides services including architectural design, equipment manufacturing, equipment installation and commissioning, and personnel management. During the project’s implementation, we established a dedicated project team that rigorously controls quality at every stage—from mine design to production and delivery. In the subsequent equipment installation phase, we developed a detailed installation organization plan and implemented timely feedback and tracking mechanisms to ensure both installation accuracy and progress.

The Jinpeng People Who Thrived Against the Tide During the Pandemic

The main production processes for this project are:

In the crushing process of Jinpeng mining equipment, a single-stage pre-crushing approach is adopted. After being squeezed into strips by a jaw crusher, the iron ore is conveyed via a belt conveyor to an intermediate stockpile for stacking. From there, it is fed onto a belt conveyor and then introduced into a semi-autogenous grinding mill, thereby entering the grinding system.

Powder grinding and re-selection operations

The Jinpeng mining machinery grinding system software employs a semi-autogenous grinding plus ball mill processing technology. A linear screen is installed at the discharge port of the semi-autogenous mill. The material passing through the screen is fed into a hydrocyclone for classification via a submersible slurry pump, while the material remaining on the screen is returned to the central ore stockpile by a belt conveyor. Two-thirds of the underflow from the hydrocyclone is fed into the cement ball mill, and the discharge from the cement ball mill can also be pumped back into the hydrocyclone via a submersible slurry pump, thereby forming a closed-loop grinding process. One-third of the hydrocyclone’s underflow is sent to a Nelson separator for further beneficiation; the tailings from this re-election process automatically flow into the cement ball mill for regrinding. The titanium concentrate obtained from re-election is fed into an Acacia unit for ultra-intensive leaching and gold mud electrolysis. The overflow from the hydrocyclone, after being screened to remove impurities, automatically flows into the leaching system.